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Showing results for tags 'ice sheet'.
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A Possible Second Large Subglacial Impact Crater in Northwest Greenland
Oxytropidoceras posted a topic in Fossil News
Scientist May Have Discovered Massive Crater Under Greenland Ice Sheet, Daily Beast, Feb. 2019 https://www.thedailybeast.com/scientist-may-have-discovered-massive-crater-under-greenland-ice-sheet Photos: Craters Hidden Beneath the Greenland Ice Sheet, Live Science, February 12, 2019 https://www.livescience.com/64755-photos-greenland-craters.html The open access paper is: Joseph A. MacGregor, William F. Bottke, Jr., Mark A. Fahnestock, Jeremy P. Harbeck, Kurt H. Kjær, John D. Paden, David E. Stillman, and Michael Studinger, 2019, A Possible Second Large Subglacial Impact Crater in Northwest Greenland First published: 11 February 2019 https://doi.org/10.1029/2018GL078126 https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018GL078126 The paper states: "Based on the dated radiostratigraphy of the Greenland Ice Sheet, available for pre-2014 radar data only, the ice overlying the structure is at least 79 ka old (Figures 1e–1h; MacGregor et al., 2015)." Yours, Paul H. -
Giant canyons discovered in Antarctica By Jonathan Amos, BBC News http://www.bbc.com/news/science-environment-44245893 The open access paper is: Winter, K., Ross, N., Ferraccioli, F., Jordan, T.A., Corr, H.F., Forsberg, R., Matsuoka, K., Olesen, A.V. and Casal, T.G., 2018. Topographic steering of enhanced ice flow at the bottleneck between East and West Antarctica. Geophysical Research Letters. https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GL077504 https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2018GL077504 Yours, Paul H. "The past is never dead. It's not even past." William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)
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Fossil Leaves Document Why Antarctic Ice Sheet Melted 23 Million Years Ago
Oxytropidoceras posted a topic in Fossil News
Shrinking of Antarctic Ice Sheet linked to CO2 spike, Phys.Org, Oct 11, 2016 http://phys.org/news/2016-10-historic-antarctic-ice-sheet-linked.html Fossil leaves show how Antarctic ice melted 23 million years ago, Zee News, Oct 20, 2016 http://zeenews.india.com/environment/fossil-leaves-show-how-antarctic-ice-melted-23-million-years-ago_1941996.html Ancient crater lake in Central Otago offers clues for Antarctica, Matthew Backhouse, Oct. 20, 2016 http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=11732949 The paper is: Reichgelt, T., W. J. D'Andrea, and B. R. S. Fox, 2016 Abrupt plant physiological changes in southern New Zealand at the termination of the Mi-1 event reflect shifts in hydroclimate and pCO2, Earth and Planetary Science Letters, vol. 455, pp. 115-124. DOI: 10.1016/j.epsl.2016.09.026 https://www.researchgate.net/publication/308978197_Abrupt_plant_physiological_changes_in_southern_New_Zealand_at_the_termination_of_the_Mi-1_event_reflect_shifts_in_hydroclimate_and_pCO2 https://www.researchgate.net/profile/Tammo_Reichgelt Yours, Paul H.-
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