An e-lecture from Dr. Dr. Niki Evelpidou, associate professor of the Faculy of Geology and Geoenvironment of National and Kapodistrian University of Athens, Greece to the Department of Earth Sciences of the Aix-Marseille University, France. These series of lectures are a collaborative teaching between the two Universities in the frame work of McAgenda Erasmus + Project. for more info please visit http://mcagenda.geol.uoa.gr/
Views: 61 Niki Evelpidou
In the field with Simon Haslett, Professor of Physical Geography at the University of Wales and author of Coastal Systems (2016, University of Wales Press). Please leave a comment if you found this video of use in your studies. New videos will be added from time to time, so you may wish to subscribe to this channel. Topics: Holocene, sea-level change, coastal plains, deposition, silts, peats, transgression, regression, reclamation. Location: Snaaskerke (Belgium). Landsurface at sea-level (0m) and 6km inland from the coastline. Latitude/longitude (for Google Earth): 51°10'18.85"N, 2°55'11.51"E. Further reading: S. K. Haslett (2009) Coastal Systems (2nd edition), Routledge: New York and London (see Section 5.1) (available from bookstores and www.routledge.com). Links: Join the Coastal Systems Facebook page at: http://www.facebook.com/pages/Coastal-Systems/89446223373 Further reading: S. K. Haslett (2016) Coastal Systems, 3rd Edition. University of Wales Press, Cardiff, 230pp. Available from : http://www.uwp.co.uk/editions/9781783169009/
Views: 1524 ProfSimonHaslett
An e-lecture from Dr. Niki Evelpidou, assoc. professor at the Department of Geology and Geoenvironmen of National and Kapodistrian University of Athens, Greece to the Faculty of Geography of Aix Marseille University, France . These series of lectures are a collaborative teaching between the two Universities in the scope of the ERASMUS+ KA203 project McAGENDA. For more info visit the projects page: http://mcagenda.geol.uoa.gr
Views: 21 McAgenda UoA
Holocene changes in climate and relative sea-level in the Lützow-Holm Bay region, East Antarctica By Ines Tavernier Abstract #1278 to be presented at the IPY Montreal Conference FrostBytes -- 'Soundbytes of Cool Research' is a concept developed by the Association of Polar Early Career Scientists (APECS: http://www.apecs.is) to share interesting information about the Polar Regions. These 30-60 second audio or video recordings are designed to help researchers easily share their latest findings to a broad audience.
Views: 1093 IPY2012Conference
New sea level model based on a modern bathymetric DEM interpolated at 20 year intervals reveals dramatic coastline changes from the Last Glacial Maximum through the Late Holocene.
Views: 5429 TemporalMapping
Glaciation and Sea Level Change Dr. Michael Wilson, Geology Department, Douglas College "When we are working along the West Coast, we have of course the interplay between the land and the ocean. Basically, we talk about sea level a lot and people probably wonder how it is that sea levels go up and down and what are the factors involved. First of all, we have to think about glaciation – the relationship between glaciation and the oceans. At the time of maximum glaciation, there is an extraordinary amount of water that is actually stored in the glaciers and that water has to be derived from somewhere. The water comes from the oceans, so there is a corresponding drop in ocean level that agrees with the timing of glaciation. We see this interplay going on, of course, throughout the Pleistocene repeatedly. Whenever there is a glaciation, sea levels are lower. The maximum drop of sea level in the last glaciation was probably on the order of 130 meters. So we are talking about a major drop in sea level here. So let’s categorize some things here. First of all, when we are talking about worldwide changes in sea level, we call that eustatic changes. There have been these eustatic changes in sea level. No problem there - it’s a very straightforward phenomenon. When ice was present, however, in the Lower Mainland for example, or along the rest of the British Columbia coast, the mass of that ice also has to be considered. The ice weighed a lot. If you’ve ever picked up a bucket of water you realize that water is pretty heavy, actually. Despite the fact that it is made of just hydrogen and oxygen, a bucket of water is still pretty heavy. And so the mass of the ice sheets themselves (we had ice here perhaps two kilometers thick) the mass of the ice sheets in the Lower Mainland would have caused the land to be depressed. And so that’s another phenomenon we’ve got, relating to buoyancy, I guess, is the best thing to relate it to in your mind. If we add mass to this region we see the depression of the land downward. Now that’s called isostatic depression. So there’s eustatic change and also isostatic change. Now think of the relationships here – we’re getting complicated. The ocean levels have gone down, but because there is ice present, the land levels have also gone down. And it’s the interplay between the two that might give us some very complicated relationships in terms of local apparent sea level, or relative sea level. The actual position of a beach, then, could be a very complicated matter, in terms of its interpretation. If the land was depressed when the ice advanced and brought mass to this area then, you can imagine too that when the ice retreated the land started to rebound. So these factors make the study of relative sea levels a very complicated issue. But wait – there’s more! In the British Columbia area, we also have some very complicated tectonic settings. That’s a third geological factor that we have to think about. Tectonism is basically mountain-building or deformation processes, such as folding and faulting. In our region we do have a lot of evidence for folding and faulting. And tectonic changes, instead of just causing regional ups and downs, might cause areas to tilt. Some areas get uplifted more in one area and down dropped in another area. That means that as the land is going up and down or rebounding it is also being rotated in response to these tectonic forces. So we’ve got a third factor, and there is a fourth factor. The ice itself actually influences the local gravitational forces in an area. Of course, land masses influence gravitational forces – ice masses also do that. And so the ice masses would be exerting a gravitational force upon the nearby water. And that might be a factor in modifying the water level a little bit, too."
Views: 279 Museum of Archaeology & Ethnology at SFU
Late-Glacial/Early Holocene Palaeoenvironments and Evidence for the 8.2 ka Event in the Southern North Sea Basin: New Data from the Dudgeon Offshore Wind Farm It is well known that the North Sea conceals an extensive Late Pleistocene and early Holocene palaeolandscape. Archaeological finds from the seabed show this former landscape was occupied by humans during periods when sea-levels were significantly lower than today and the British Isles formed the north-western promontory of the European continental shelf. Renewed interest in submerged palaeolandscapes has occurred chiefly in response to increasing pressure from commercial aggregate dredging, oil and gas exploration and offshore windfarm developments. This paper presents the results of an integrated palaeoenvironmental study (pollen, foraminifera, ostracods, plant macrofossils, molluscs) of organic sediments taken as part of geoarchaeological investigations on the site of the Dudgeon Offshore Wind Farm. The sediments cover a period of as much as 4,400 years (12,700-8300 cal yr BP), including a substantial peat covering the late Devensian/early Holocene transition (12,700-9260 cal yr BP). During the late Glacial the local environment is characterised by sub-alpine plant communities with open birch woodland, followed by development of birch and hazel woodland during the early Mesolithic. A phase of marine inundation occurred around 9500-9000 cal yr BP, with a final marine inundation of the area around 8400 cal yr BP, possibly linked to a meltwater pulse following the collapse of the Laurentide icesheet, precipitating major palaeogeographic and climatic changes within and beyond the North Sea. The results begin to address the deficiency in detailed palaeoenvironmental studies from the area, providing new data on patterns of physical, vegetation and environmental change in the context of rising post-glacial sea-levels Alex Brown 1,2, Jack Russell 1, Rob Scaife 3, John Whittaker 4, Sarah Wyles 5 1 Wessex Archaeology, Salisbury, UK 2 Department of Archaeology, School of Archaeology, Geography and Environmental Sciences, University of Reading, UK 3 Geography and Environmental Sciences, University of Southampton, UK 4 Department of Palaeontology, The Natural History Museum, London, UK 5 Cotswold Archaeology, Hampshire, UK
Views: 1335 Recording Archaeology
Rising global sea level is one of the most commonly cited consequences of climate change, but it’s often unclear how it might affect people living on the coasts. A rise in global sea level occurs due to the warming of the ocean and the addition of fresh water into the ocean basins from melting ice on land. Local sea level, known as relative sea level change, is affected by global sea level fluctuations, changes in land elevation, winds, and ocean circulation. Original video source: http://oceantoday.noaa.gov/globalvslocalsealevel/ Ocean Today is an interactive exhibit that plays short videos on ocean related themes. Visitors can select from 150+ videos on topics ranging from deep-‐sea exploration, marine species, and restoration projects to hurricanes, oceans and human health, and climate science and research. These videos are a free resource and are available on our website at oceantoday.noaa.gov.
Views: 3578 usoceangov
In the field with Simon Haslett, Professor of Physical Geography at the University of Wales and author of Coastal Systems (2016, University of Wales Press). Please leave a comment if you found this video of use in your studies. Topics: mangroves (mangals), geomorphology, sea-level rise, progradation, global warming, climate change, ecology, coastal defence, cyclones. Location: Thomatis Creek, Barron River Delta (Cairns, Queensland, Australia). Latitude/longitude (for Google Earth): 16°49'13.69"S, 145°43'56.96"E. Further reading: S. K. Haslett (2016) Coastal Systems, 3rd Edition. University of Wales Press, Cardiff, 230pp. Available from : http://www.uwp.co.uk/editions/9781783169009/ (see Section 5.3.2).
Views: 1432 ProfSimonHaslett
A lecture by Dr. Kenneth Miller, professor and Chair, Dept. of Earth & Planetary Sciences, Rutgers University.
Views: 172 Duke's Nicholas School of the Environment
Andrea Dutton approaches sea level rising in a different way, exploring the effects of climate change in the future. Dr. Andrea Dutton is an assistant professor in the University of Florida Department of Geological Sciences. Her research focuses on reconstructing sea level during past warm periods. By studying how seas have risen in the past, Dutton aims to better inform us about future sea-level rise. She travels to field sites around the globe to collect data on the rates, magnitude, and timing of past sea level and climate changes. Dutton has recently dedicated time to public officials and science communication to better inform decisions impacted by rising sea levels. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
Views: 3859 TEDx Talks
Ice cores from Greenland and Northern Canada tell a consistent story of changes in the climate over many millennium. This story is presented from the end of the last ice age 11750 years ago to the present and the major climate events related to examples of societal response. David Fisher
Views: 268 Madeleine Aubrey
Josh Kent of Louisiana State University gives a simple explanation of how sea level rise from climate change and sinking of the land both contribute to coastal changes. Video produced by the Climate.gov team in cooperation with climate and Earth scientists from the National Oceanic and Atmospheric Administration and other agencies and institutions. Any opinions voiced by people in these videos are their own; they are not official NOAA statements or opinions. Unless specifically stated otherwise, Climate.gov video productions can be freely republished or re-purposed by others.
Views: 1850 NOAAClimate
During the Pleistocene and Holocene epochs, the global sea level has varied tremendously due to the advance and retreat of glaciers. This animation, created using the Wolfram Language via Mathematica (https://community.wolfram.com/groups/-/m/t/1609980), shows the visible effect on the coast lines of Europe and the U.K. over the last 500,000 years. It makes use of data from De Boer, B., R.S.W. Van de Wal, R. Bintanja, L.J. Lourens and E. Tuenter, "Cenozoic global ice-volume and temperature simulations with 1-D ice-sheet models forced by benthic d18O records", Annals of Glaciology, 51 (55), 23-33, 2010.
Views: 7 Jeff Bryant
The video shows the area around Port Louis in Mauritius, on an altitude-colored, relief-shaded map with present coastline outlined, while the sea level rises from 135 m below present, like at the last glacial maximum, to 65 m above present, like if all remaining ice sheets would melt. The map is centered on 20°S 58°E, with a 6° vertical field of vision, meaning a 1186x667 km2 area and 0.9 km/px resolution. CC BY 2018 SeaLevelRise.se, http://sealevelrise.se, rendered using custom PERL script, ImageMagick and FFmpeg, from open geodata, the GEBCO_2014 Grid, version 20150318. The view is also available as an interactive 3D scene at http://sealevelrise.se/en/earth_3d1/map1090.html . The video is part of the collection Post-Glacial Sea Level Rise, https://www.youtube.com/playlist?list=PL6SgRGKF7pUxGJDaZFX42AD-WThvESlMf
Views: 47 Magnuz64
Short film about Sea-level rise, Subsidence and Sedimentation budget in de Dutch Wadden Sea In this film, the scientific report ‘Sea-level rise, subsidence and morphodynamics in the Dutch Wadden Sea; 2030, 2050, 2100’ is summarized in nine minutes. The content of the report itself, will be published in article form in September 2018 as a Special Issue of the Netherlands Journal of Geosciences. https://www.cambridge.org/core/journals/netherlands-journal-of-geosciences/issue/CE6C65B1C738605EDA0D58EDE5B83436
Views: 212 Waddenacademie
The sedimentary record of the Louisiana coast provides unique opportunities to investigate Holocene sea-level change at very high resolution, and to develop connections with paleoclimate records. Our efforts focus, among others, on the period eight to ten thousand years ago when the large ice sheets in North America and Antarctica melted very rapidly, leading to rates of sea-level rise within the range of what is expected later in the 21st century.
Views: 533 Tulane University
Ray Bradley, from the Climate System Research Center in UMASS Amherst, reviews how changes in Earth’s orbital relationship to the sun, and consequent changes in insolation, produced warming in the early Holocene akin to what we can expect with projected anthropogenic warming of 2-degrees centigrade. Bradley explains how the dominant feature of the temperature record over that time span has been a slow decline, followed by a recent sharp rise. Warm temperatures of the early Holocene occurred when the Earth was closest to the sun during summer. 10,000 years later, we are closest during January. As a consequence, he notes, wintertime polar temperatures demonstrate an increase 2-3 times greater than mean global annual temperature increase. During summer, polar amplification is “merely” double the global average. Reappearance of blue mussels in Svalbard (last seen in the early Holocene), are evidence that it may indeed be an analog for further changes yet in store.
Views: 1091 YaleUniversity
Tips on doctoring other people's graphs Original graph: http://en.wikipedia.org/wiki/File:Holocene_Temperature_Variations.png Don Easterbrook: http://www.youtube.com/watch?v=bzUfMIMuE2A Source of the story: http://hot-topic.co.nz/cooling-gate-easterbrook-fakes-his-figures-hides-the-incline/
Views: 1654 cristop5
Try CuriosityStream today: http://curiositystream.com/eons Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateEONS Imagine an enormous, lush rainforest teeming with life...in the Arctic. Well there was a time -- and not too long ago -- when the world warmed more than any human has ever seen. (So far) Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Special thanks to Nobumichi Tamura for allowing us to use his work: http://spinops.blogspot.com/ Want to follow Eons elsewhere on the internet? Facebook - https://www.facebook.com/eonsshow Twitter - https://twitter.com/eonsshow Instagram - https://www.instagram.com/eonsshow/ References: https://www.colorado.edu/today/2010/08/24/new-study-shows-how-tortoises-alligators-thrived-high-arctic-some-50-million-years-ago http://advances.sciencemag.org/content/3/3/e1600891.full http://geology.geoscienceworld.org/content/38/1/15.full?ijkey=Gz6vWfTZzGpv6&keytype=ref&siteid=gsgeology http://www.sciencedirect.com/science/article/pii/S0012821X15003994 http://science.sciencemag.org/content/192/4241/781 https://www.researchgate.net/publication/245029249_Plant_response_to_a_global_greenhouse_event_56_million_years_ago http://www.pnas.org/content/105/10/3815.full http://onlinelibrary.wiley.com/doi/10.1029/1999GB001195/abstract https://www.e-education.psu.edu/earth103/node/639 https://earthobservatory.nasa.gov/Features/Paleoclimatology_OxygenBalance/ http://www.palaeontologyonline.com/articles/2011/the-paleocene-eocene-thermal-maximum/ http://www.nature.com/ngeo/journal/v9/n4/abs/ngeo2681.html http://cdiac.ess-dive.lbl.gov/trends/emis/tre_glob_2014.html http://cdiac.ess-dive.lbl.gov/ftp/ndp030/global.1751_2014.ems https://www.sciencealert.com/carbon-emissions-now-higher-than-they-ve-been-since-the-dinosaurs-went-extinct https://www.nature.com/ngeo/journal/v4/n7/full/ngeo1179.html https://ucsdnews.ucsd.edu/pressrelease/disappearance_of_coral_reefs_drastically_altered_marine_food_web_on_the_hor https://earthobservatory.nasa.gov/Features/GlobalWarming/page3.php http://www.ei.lehigh.edu/eli/cc/resources/readings/iscurrent.pdf http://people.earth.yale.edu/paleoceneeocene-thermal-maximum http://pages.geo.wvu.edu/~kammer/g231/PETM.pdf http://www.scotese.com/newpage9.htm http://all-geo.org/highlyallochthonous/2010/01/coal-and-the-fossil-record-of-climate-change-in-the-canadian-high-arctic/ http://academic.evergreen.edu/z/zita/meetings/Chau07/present/CarbonCycle.pdf http://naturalhistory.si.edu/ete/ETE_People_Wing_ResearchThemes_Wyoming.html https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4948332/ http://ngm.nationalgeographic.com/2011/10/hothouse-earth/kunzig-text/1 http://www.sciencedirect.com/science/article/pii/S0921818117300723 https://www.livescience.com/15597-primate-oldest-fossil-fingernails.html https://news.nationalgeographic.com/news/2002/11/1121_021121_PrimateOrigins_2.html http://electronic-earth.net/3/19/2008/ee-3-19-2008.pdf https://www.geolsoc.org.uk/Geoscientist/Archive/June-2014/The-Arctic-Azolla-event https://www.nature.com/articles/ngeo1179.epdf?referrer_access_token=4VJfM12-Bke0u7yNAQrdW9RgN0jAjWel9jnR3ZoTv0M9N_6CDYtcTDVJIMWPdxeFMCNsV3K0EIxvtcQpV06fZjTyZ6T7lyyizBoY0zL-CPBpPMJv986FX1njYRF-W4EqSgQKe-_W5T0FLgJSTENZSAmV35S5lMgxuhsef9Pka9vKqPOphclpl-VY46vMc7XzaZ-fGB50Pf9PxuqM28eLeGSconG9lypd3899nbUJc3d-lGFGN4s8I1IHHwdgcNOk&tracking_referrer=www.bbc.com http://www.whoi.edu/fileserver.do?id=136084&pt=2&p=148709
Views: 2488884 PBS Eons
Dr. Josh Willis discusses the connection between oceans and global climate change. Learn why NASA measures greenhouse gases and how we detect ocean levels from space. These are crucial vital signs of the planet and help us to understand just how much humans can impact the climate.
Views: 3614 Cloud .Tube
Lecture by James Nicholls given at the Geological Society on 18 April 2012 as part of the 2012 Shell London Lecture series. Coastal areas constitute important habitats, and they contain a large and growing proportion of population and economic activity, including economic centres such as London, New York, Tokyo, Shanghai, Mumbai, and Lagos. Sea-level rise is a long-term threat to these areas. Global-mean sea levels rose 17 cm through the twentieth century due to global warming: they are likely to rise more rapidly due to the same cause through the twenty-first century when a rise of more than 1 m is possible. In some locations, local (or relative) sea-level rise may be exacerbated by subsidence, especially due to ground fluid withdrawal from, and drainage of, susceptible soils. Relative sea-level rise has a range of potential impacts, including higher extreme sea levels (and flooding), coastal erosion, salinization of surface and ground waters, and degradation of coastal habitats such as wetlands. In the worst case, large land areas could be lost and millions of people could be displaced by sea-level rise. Appropriate responses include mitigation of climate (a global response) and subsidence (a local response) and/or adaptation (also a local response). A combination of these strategies appears to be the most appropriate response to sea-level rise. Adaptation responses can be characterized as (1) protect, (2) accommodate, or (3) retreat. While these adaptation responses could reduce impacts significantly, they will need to be consistent with responses to all coastal hazards, as well as with wider societal and development objectives; hence, an integrated coastal management philosophy is required. In some developed countries, including England and the Netherlands, proactive adaptation plans are already being formulated. Coastal cities worldwide will be a major focus for adaptation efforts because of their concentrations of people and assets. Developing countries will pose adaptation challenges, especially in deltaic areas and small islands, which are the most vulnerable settings.
Views: 1914 GeologicalSociety
Reconstructing Holocene Wetlands of Northern England: New Paleogeographic Models in the Humber Estuary Eric A. Rodriguez With the recent application of paleographic modelling on prehistoric wetland environments, it has been possible to observe not only the landscapes of past societies but also how the dynamic nature of these environs influenced the phenomenology and settlement patterns of such peoples. This paper focuses on two areas from Northern England’s Humber Estuary and describes the interactions between the reconstructed palaeolandscapes of Roos Carr and Ferriby and the shifting settlement patterns from the Late Neolithic to the Early Bronze Age. Given the rapid sea-level change of the period, this study contributes to the existing discourse concerning the interconnectivity of climate change, dynamic landscapes and past societies. The aims of this study are not solely focused on reconstructive modelling techniques, but move rather, towards an investigation into the role of dynamic maritime landscapes in crafting Holocene phenomenologies and influencing settlement patterns in the Humber Estuary.
Views: 184 Recording Archaeology
Robert Way examines the Medieval Warm Period and how it compares to today's temperatures. About Denial101x... Climate change is real, so why the controversy and debate? Learn to make sense of the science and to respond to climate change denial in Denial101x, a massive open online course (MOOC) from UQx and edX. Denial101x isn’t just a MOOC about climate change; it’s a MOOC about how people think about climate change. Comments on our channel are turned off. To discuss our videos, enrol at http://edx.org/understanding-climate-denial and join us in the edX discussion forum. References for this video: Ahmed, M., Krusic, P. J., Charpentier Ljungqvist, F., & Zorita, E. (2013). Continental-scale temperature variability during the past two millennia. Nature Geoscience, 6(5), 339-346. http://www.nature.com/ngeo/journal/v6/n5/full/ngeo1797.html Post by author: http://www.realclimate.org/index.php/archives/2013/04/the-pages-2k-synthesis/?wpmp_tp=1 Diaz, H. F., Trigo, R., Hughes, M. K., Mann, M. E., Xoplaki, E., & Barriopedro, D. (2011). Spatial and temporal characteristics of climate in medieval times revisited. Bulletin of the American Meteorological Society, 92(11), 1487-1500. http://blog.lib.umn.edu/stgeorge/geog5426/Diaz%20Bulletin%20of%20the%20American%20Meteorological%20Society%202011.pdf Fernández-Donado, L., González-Rouco, J. F., Raible, C. C., Ammann, C. M., Barriopedro, D., García-Bustamante, E., ... & Zorita, E. (2013). Large-scale temperature response to external forcing in simulations and reconstructions of the last millennium. http://pubman.mpdl.mpg.de/pubman/item/escidoc:1693782/component/escidoc:1693780/cp-9-393-2013.pdf Goosse, H., Crespin, E., Dubinkina, S., Loutre, M. F., Mann, M. E., Renssen, H., ... & Shindell, D. (2012). The role of forcing and internal dynamics in explaining the “Medieval Climate Anomaly”. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20140001050.pdf Grinsted, A., Moore, J. C., & Jevrejeva, S. (2010). Reconstructing sea level from paleo and projected temperatures 200 to 2100 AD. http://kaares.ulapland.fi/home/hkunta/jmoore/pdfs/grinstedetalclimdyn09.pdf Palaeoclimate. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change http://ipcc.ch/publications_and_data/ar4/wg1/en/ch6.html Kemp, A. C., Hortona, B. P., Donnellyc, J. P., Mannd, M. E., Vermeere, M., & Rahmstorff, S. (2011). Climate related sea-level variations over the past two millennia. Proceedings of the National Academy of Sciences http://www.pnas.org/content/108/27/11017.full Kobashi, T., Goto-Azuma, K., Box, J. E., Gao, C. C., & Nakaegawa, T. (2013). Causes of Greenland temperature variability over the past 4000 yr: implications for northern hemispheric temperature changes. http://www.clim-past.net/9/2299/2013/cp-9-2299-2013.pdf Lambeck, K., Rouby, H., Purcell, A., Sun, Y., & Sambridge, M. (2014). Sea level and global ice volumes from the Last Glacial Maximum to the Holocene. http://www.pnas.org/content/111/43/15296.full Ljungqvist, F. C., Krusic, P. J., Brattström, G., & Sundqvist, H. S. (2012). Northern Hemisphere temperature patterns in the last 12 centuries. http://www.clim-past.net/8/227/2012/cp-8-227-2012.pdf 2013: Information from Paleoclimate Archives. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change http://ipcc.ch/pdf/assessment-report/ar5/wg1/WG1AR5_Chapter05_FINAL.pdf Miller, G. H., Lehman, S. J., Refsnider, K. A., Southon, J. R., & Zhong, Y. (2013). Unprecedented recent summer warmth in Arctic Canada. Geophysical Research Letters http://onlinelibrary.wiley.com/doi/10.1002/2013GL057188/full Otto-Bliesner, B.L., E.C. Brady, J. Fasullo, A. Jahn, L. Landrum, S. Stevenson, N. Rosenbloom, A. Mai, G. Strand. Climate Variability and Change since 850 C.E.: An Ensemble Approach with the Community Earth System Model (CESM) http://www.cgd.ucar.edu/ccr/ottobli/pubs/CESM-LME_BAMS_submit-15Feb2015.pdf Phipps, S. J., McGregor, H. V., Gergis, J., Gallant, A. J., Neukom, R., Stevenson, S., ... & Van Ommen, T. D. (2013). Paleoclimate data–model comparison and the role of climate forcings over the past 1500 years. http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2132&context=smhpapers Wanner, H., Mercolli, L., Grosjean, M., & Ritz, S. P. (2014). Holocene climate variability and change; a data-based review. Journal of the Geological Society, 2013-101. http://www.sritz.ch/resources/Research/wanner14jgs.pdf Zhou, T., Li, B., Man, W., Zhang, L., & Zhang, J. (2011). A comparison of the Medieval Warm Period, Little Ice Age and 20th century warming simulated by the FGOALS climate system model. Chinese Science Bulletin, 56(28-29), 3028-3041.
"Holocene glacial retreat" had a profound effect on landscapes in many areas that were covered by ice at the Last Glacial Maximum. The many valleys of the Cairngorms, a mountainous region in the Eastern Scottish Highlands are littered with deposits from this period. A significant event spurred by the deglaciation was Meltwater pulse 1A. The modern Ohio River was formed when the river was temporarily dammed just southwest of Louisville, Kentucky, creating a large lake until the dam burst. The Ohio River largely supplanted the former Teays River drainage system, which was disrupted by the glaciers. Ancient Lake Chicago, on the southern margin of the Wisconsin Glacier, found successive lower outlets as the glacier retreated, until the Saint Lawrence River route was uncovered. Corresponding to each level, remnant lake shore features may be found in many areas. One prehistoric shoreline is delineated by Bluff Avenue, a north-south street on the La Grange, Illinois east side. The retreat and shrinking of Pleistocene ice sheets, ice caps, and mountain glaciers resulted in the addition of enormous quantities of water to the oceans and seas of the world. As result, sea level rose significantly globally resulting in extensive retreat of their shorelines around the world. In some areas, the sea level retreated inland rapidly as a result of rising sea level. When sea levels were low, the combined Tigris-Euphrates river flowed through a wide flat marshy landscape. The Persian Gulf today has an average depth of only 35 m. During the most recent glaciation, which ended 12,000 years ago, worldwide sea levels dropped 120 to, leaving the bed of the Persian Gulf well above sea level during the glacial maximum. It had to have been a swampy freshwater floodplain, where water was retained in all the hollows. High in the Taurus Mountains glaciation would have been extensive. Wiz Science™ is "the" learning channel for children and all ages. SUBSCRIBE TODAY Disclaimer: This video is for your information only. The author or publisher does not guarantee the accuracy of the content presented in this video. USE AT YOUR OWN RISK. Background Music: "The Place Inside" by Silent Partner (royalty-free) from YouTube Audio Library. This video uses material/images from https://en.wikipedia.org/wiki/Holocene+glacial+retreat, which is released under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . This video is licensed under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . To reuse/adapt the content in your own work, you must comply with the license terms.
Views: 360 Wiz Science™
This addresses a response to Peter's video "Part 11A: Climate Change - Hurricanes, Atolls And Corals," which, on investigation, revealed a major error by a news agency and a TV network. The moral of the story is that sticking the label "Global Warming" onto anything that moves is not going to help public understanding of climate science. This video series is made by the former science correspondent Peter Hadfield who has a genuine interest in reporting the facts, not the media hype. Peter runs the very popular YouTube channel potholer54 and it is for this channel he originally made this series. The Flagship Movement is always working towards informing the general public about anything related to sustainability and as climate change in recent years have become a central part of any sustainability work, and the debate about it have become so infected with unscientific nonsense - we felt that we needed to try and clear things up a bit using the actual science. We felt that Peter's YouTube series are among, if not THE best regarding the issue of climate change. SOURCES FOR THIS VIDEO: "Rising Water threatens Panama islands" -- Al Jazeera http://www.youtube.com/watch?v=s4m_Tx... "Rising sea drives Panama islanders to mainland" by Sean Mattson, Reuters July 12, 2010 http://www.reuters.com/article/idUSTR... Map of Caribbean tectonics from: "Wide Plate Margin Deformation, Southern Central America and Northwestern South America" R. Trenkamp et al. http://estrella.geol.sc.edu/~agl/CASA... Paper showing influence of subsidence on tidal guages: "Changing coastal levels of South America and the Caribbean region from tide-gauge records" - D.G. Aubreya et al, 1988 Map showing isostatic uplift of Britain: http://www.neccap.org/NE%20Adapt/Clim...
Views: 241 permahome
The video shows the Baltic Sea on an altitude-colored, relief-shaded map with present coastline outlined, while the sea level drops from 200 m above present to 200 m below. The map is centered on 59°N 19°E, with a 15° vertical field of vision and 2.3 km/px resolution. CC BY 2018 SeaLevelRise.se, http://sealevelrise.se, rendered using custom PERL script, ImageMagick and FFmpeg, from open geodata, the GEBCO_2014 Grid, version 20150318, http://www.gebco.net . The video is part of the collection Sea Level Change, https://www.youtube.com/playlist?list=PL6SgRGKF7pUyRKWRfkX1REdOuQet_Tcue
Views: 52 Magnuz64
An analysis of historical scientific data allows current sea levels to be viewed within an historical context and hence put into perspective.
Views: 3197 Philosophical Investigations
From 21st Century Science to Public Discourse A History of Science Perspective Human activity is leaving a pervasive and persistent signature on Earth. Vigorous debate continues about whether this warrants recognition as a new geologic time unit known as the Anthropocene. The appearance of manufactured materials in sediments, including aluminum, plastics, and concrete, coincides with global spikes in fallout radionuclides and particulates from fossil fuel combustion. Carbon, nitrogen, and phosphorus cycles have been substantially modified over the past century. Rates of sea-level rise and the extent of human perturbation of the climate system exceed Late Holocene changes. Biotic changes include species invasions worldwide and accelerating rates of extinction. These combined signals render the Anthropocene stratigraphically distinct from the Holocene and earlier epochs. SPONSORED BY: COLLEGE OF ARTS AND SCIENCES SCHOOL OF GLOBAL AND INTERNATIONAL STUDIES DEPARTMENT OF ANTHROPOLOGY DEPARTMENT OF GEOLOGY DEPARTMENT OF INTERNATIONAL STUDIES CENTER ON AMERICAN AND GLOBAL SECURITY CENTER FOR ANALYSIS OF SOCIAL-ECOLOGICAL LANDSCAPES (CASEL) OSTROM WORKSHOP
Views: 717 IU Maurer
CORRECTIONS: I at around 8:00 I said that temperatures are now as high as they've been for the last 11,000 years, based on the Marcott paper I cite below. That's not accurate. Marcott concluded that current (transient) temperatures are now higher than 75% of the Holocene, and are set to exceed the highest Holocene temperatures over the next eight decades whatever the greenhouse gas emissions scenario. And at about 3:30 I said 400 million instead of 400 parts per million. The meaning should be clear from the context, but excuse the slip. SOURCES: 0:02 – “Is Climate Change Real?” YouTube video on Bill Whittle channel - https://www.youtube.com/watch?v=v_RuverrEZ4&t=80s 1:06 – Thermal expansion of oceans at https://earthobservatory.nasa.gov/Features/OceanCooling/page5.php 1:09 -- "Kinematic Constraints on Glacier Contributions to 21st-Century Sea-Level Rise" -- WT Pfeffer et al., Science 2008 1:24 -- "A Semi-Empirical Approach to Projecting Future Sea-Level Rise" -- Rahmstorf, Science 2007. 1:30 -- “Reconstructing sea level from paleo and projected temperatures 200 to 2100AD” -- Grinsted et al., Climate Dynamics 2009 1:38 -- “Global sea level rise scenarios for the United States National Climate Assessment” -- Parris et al. , NOAA 2012 See also "Global sea level linked to global temperature" -- Martin Vermeer and Stefan Rahmstorf, PNAS 2009 1:45 – “Contribution of Antarctica to past and future sea level rise” DeConto and Pollard, Nature 2016 2:15 – Bill Nye climate video. 4:03 – “The Phanerozoic record of global sea level change” -- Miller et al., Science 2005 4:05 – “An atmospheric pCO2 reconstruction across the Cretaceous-Tertiary boundary from leaf megafossils” Beerling et al, PNAS 2002 4:36 – Whittle doesn’t give a source for this reconstruction, but it seems to be Mann, Bradley and Hughes 1998 04:47 – Whittle also doesn’t give a source for this graph, but I tracked down the author as Humlum at Oslo University. It hasn’t been published or peer-reviewed, it’s just being passed round the blogosphere. 5:04 – 5:18 – CORRECTION: The Arrhenius paper was 1896, not 1894. Other than that, the titles, authors and dates of these papers are ALL shown very clearly in the video. 6:45 -- 1950 as baseline: http://onlinelibrary.wiley.com/doi/10.1029/96JC03837/epdf ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/brook2000/gisp2-8200-gas-iso.txt 6:52 – GISP2 raw data from: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/isotopes/gisp2_temp_accum_alley2000.txt 7:23 – Ibid. 8:05 – “A Reconstruction of Regional and Global Temperature for the Past 11,300 years.” -- Markott at al. , Science 2013 10:30 -- "CO2 as a primary driver of Phanerozoic climate" -- D. Royer et al, GSA Today, March 2004. Based on Geocarb III data from: "Geocarb III: A revised model of atmospheric CO2 over Phanerozoic time" -- R. Berner and Z. Kothavala, American Journal of Science, Feb 2001 10:39 – “Time-specific black mudstones and global hyperwarming on the Cambrian–Ordovician slope and shelf of the Laurentia palaeocontinent” E. Landing / Palaeogeography, Palaeoclimatology, Palaeoecology 11:25 -- Solar output graph from James Imamura, University of Oregon Dept of physics http://jersey.uoregon.edu/~imamura/122/lecture-1/lecture-1.html 11:48 - “Climate Sensitivity during the Phanerozoic: Lessons for the Future” -- Dana L. Royer, oral presentation at AAPG Annual Convention, Denver, Colorado, June 2009. 12:01 -- "Geocarb III: A revised model of atmospheric CO2 over Phanerozoic time" -- R. Berner and Z. Kothavala, American Journal of Science, Feb 2001 12:06 -- "CO2 as a primary driver of Phanerozoic climate" -- D. Royer et al, GSA Today, March 2004. 14:06 -- “Large Perturbations of the Carbon Cycle During Recovery from the End-Permian Extinction” – Payne, Science 2004 14:11 – “δ13Corg chemostratigraphy of the Permian‐Triassic boundary in the Maitai Group, New Zealand: Evidence for high‐latitudinal methane release” -- Krull et al., New Zealand Journal of Geology and Geophysics, 1999 15:18 – “Volatile fluxes during flood basalt eruptions and potential effects on the global environment: A Deccan perspective” -- Self et al., 2006 CORRECTION: The Deccan traps happened around 66 million years ago. The flood basalt events that increased CO2 around 80 mya were the Caribbean plateau and the Madagascar traps according to "On the ages of flood basalt events" (Courtillot and Renne 2002). 15:48 -- "Timing of Atmospheric CO2 and Antarctic Temperature Changes Across Termination III" -- Caillon et al, Science 2003 16:35 – A list of the various myths and where I address them can be found in the video description of my video “The evidence for global warming without computer models or the IPCC.”
Views: 139264 potholer54
Independent videographer Peter Sinclair's 'This is Not Cool' video explores recent headline-grabbing research on Antarctic glacial melting, the first video produced under the name Yale Climate Connections, formerly The Yale Forum on Climate Change & The Media.
Views: 61388 YaleClimateConnections
Plato's Story of Atlantis In 360 BC, the famous Greek philosopher Plato wrote about a battle between his city Athens and a great empire named Atlantis. He described this war, which ended when Atlantis disappeared in the ocean due to "violent earthquakes and floods," in two of his books: "Timaeus" and "Critias" (https://sites.google.com/site/11000vchr/plato-s-kritias). According to Plato, all this happened 9,000 years before his time which would be at least 9,400 BC, some 12,400 years ago. Intriguingly, this also corresponds to the period when the geological age of the Younger Dryas suddenly ended with an abrupt warming of more than 10°C in only a few years. This event marked the beginning of the Holocene, the era in which we are still living today. Sea levels must have risen rapidly and dramatically, and as a result entire civilizations, if any existed, would have disappeared under water. It's still unclear what caused the extreme climate change that ended the Younger Dryas around 9,700 BC, although some evidence seems to point to solar activity. Whether Atlantis really existed is hard to say. In that time, sealevels were at least 80 to 100 meters lower than today. Therefore, if there were any archeological evidence, one would have to look deep in the bottom of the sea, but nothing has been found sofar. Plato's main concern was probably with illustrating his political views rather than being historically accurate. He was very much opposed to Athen's new democracy and held the opinion that it would inevitably lead to dictatorship and tyranny. Indeed, Atlantis owed its greatness, according to Plato, to the oligarchy that happened to govern the city-empire exactly the way he propagated in his work “The Republic.” Moreover, only the first 20 pages of Plato's narrative have been preserved. It remains remarkable though, how Plato's story reflects climatic events and other facts of which he could not have had any direct knowledge. For instance, he explains how in ancient times, the higher and less fertile areas were inhabited by primitive pastoral peoples, while the more advanced civilizations lived in the coastal regions, which is why they could escape the catastrophic rise in sea levels that struck the coastal regions and destroyed everything that lived there. Plato tells us that only the Egyptian culture was saved from this due to its special location further inland in the Nile valley. Other intriguing issues, such as the frequent use of “orichalcum” in Atlantis, are mentioned in the “Critias” as well. This mysterious metal is very reminiscent of tumbaga, an alloy of gold and copper in varying proportions which was much used by the Inca and other peoples in the New World. This, however, became known only 2,000 years later after Columbus discovered America. Plato wasn't the first to mention Atlantis as it is often believed. In Herodotus' time, the sea outside Gibraltar was on occasion called the Atlantis Sea. In the Great Hall of the temple of Ramses at Karnak a column shows a depiction of a great festival, along with an accompanying text memorializing “the loss of a drowned continent in the Western Ocean.” Plato described Atlantis as being ruled by ten kings and Egyptian king-lists going back thousands of years before Plato also talk of ten god-kings called “Atlanteans.” The Sanskrit writings of ancient India contain several descriptions of Atlantis, and even assert that Atlantis was destroyed as the result of a war between the gods and Asuras (giant and sometimes demonic creatures). The Vishnu Purana, one of the oldest of the Hindu Puranas, speaks of "Atala, the White Island," one of the seven islands belonging to Patala. The Mahabharata also refers to "Atala, the White Island," which is described as an "island of great splendour." Megalithic structures like the Sphynx in Egypt, Göbekli Tepe in Turkey and maybe even Yonaguni in Japan that were build more than 10.000 years ago, point to the existence of advanced cultures in ancient times. But wether Atlantis is more than just a myth, and where it was located, remains a mystery. (2014) Created in 2002 by Graham Hancock. In 2015 he published his latest sequel ‘Magicians of the Gods’: https://youtu.be/KcPgIphDWGY http://www.grahamhancock.com Visit: https://www.facebook.com/SpaceAndIntelligence
Views: 797502 Space And Intelligence
David Bromwich and Julien Nicholas Polar Meteorology Group, Byrd Polar and Climate Research Center The Ohio State University Antarctica: Then, Now, and What's to Come November 3, 2014
Views: 1224 byrdpolar
This video from the Museum's Florida Fossils exhibit describes the Pleistocene Epoch, 2 million to 10,000 years ago. The Ice Ages of the Pleistocene wreaked climatic havoc on the northern continents, but Florida was buffered from the worst effects by the warm waters of the Gulf of Mexico. Nevertheless, rapid pulses of climate change profoundly affected the area. During glacial periods (low sea levels), Florida was more than twice as large as it is today. Warmer periods (high sea levels) caused the peninsula to shrink in size. The number of larger animals (megafauna) declined during the late Pleistocene, but scientists are unsure why these extinctions occurred. Changing climates or disease may have caused their demise. Perhaps the new predator in the region, Homo sapiens, hunted these marvelous animals to extinction. All we know with confidence is that their fossilized remains testify to their existence in Florida until about 10,000 years ago. Produced, directed and filmed for the Florida Museum of Natural History by Wes C. Skiles/Karst Productions, Inc.
Views: 30626 FloridaMuseum
This extract was taken from the full presentation at: Naom Chomsky at St Olaff College - 4 May 2018 - FULL PRESENTATION https://youtu.be/ZDQ2fjg0kMM
Views: 4795 Michabo Sustainable Harmony
HOW TO LET GO OF THE WORLD: AND LOVE THE THINGS CLIMATE CAN’T CHANGE is a documentary about the impact climate change is having on our planet. Director Josh Fox breaks down the realities facing our planet as we attempt to combat climate change from sea level rise to climate refugees. Fox also expresses the importance of applying the idea of justice to the climate change battle in this BYOD highlight hosted by Ondi Timoner. Watch the full BYOD episode here: https://www.youtube.com/watch?v=UM1QSWThTfc&list=PLjk3H0GXhhGdZbrANmO6kYPy8IQC0GiN_&index=2 BYOD Full Episodes Playlist: https://www.youtube.com/watch?v=sYs3uKjbbUM&index=1&list=PLjk3H0GXhhGdZbrANmO6kYPy8IQC0GiN_ BYOD Short Clips Playlist: https://www.youtube.com/watch?v=hDvL616NNy0&list=PLjk3H0GXhhGeu2DCf6Ouo7hTsA5QB2MAL&index=1 http://www.thelip.tv www.thelip.tvhttp://www.youtube.com/theliptv https://www.facebook.com/BYODOC?directed_target_id=0 https://www.facebook.com/thelip.tv?ref=hl
Views: 1235 TheLipTV
Baker to Bay-Searching for Certainty in Uncertain Times Sea Level Rise Impact Pathways to Bellingham Bay Communities and Ecosystems with Eric Grossman, Western Washington University Department of Geology, and USGS Pacific Coastal & Marine Science Center & Research Facility http://whatcom.wsu.edu/nr/btb/documents/2017_BTB_Program_v4.pdf
Views: 70 City of Bellingham Washington