Search Results - "Hein, Andrew S."

Influence of Patagonian glaciers on Antarctic dust deposition during the last glacial period by Bory, Aloys J.-M, McCulloch, Robert D, Sugden, David E, Hein, Andrew S

“…Ice cores provide a record of changes in dust flux to Antarctica, which is thought to reflect changes in atmospheric circulation and environmental conditions…”
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Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet by Hein, Andrew S., Marrero, Shasta M., Woodward, John, Dunning, Stuart A., Winter, Kate, Westoby, Matthew J., Freeman, Stewart P. H. T., Shanks, Richard P., Sugden, David E.

“…Establishing the trajectory of thinning of the West Antarctic ice sheet (WAIS) since the last glacial maximum (LGM) is important for addressing questions…”
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New Last Glacial Maximum ice thickness constraints for the Weddell Sea Embayment, Antarctica by Nichols, Keir A, Goehring, Brent M, Balco, Greg, Johnson, Joanne S, Hein, Andrew S, Todd, Claire

“…We describe new Last Glacial Maximum (LGM) ice thickness constraints for three locations spanning the Weddell Sea Embayment (WSE) of Antarctica. Samples…”
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Evidence for the stability of the West Antarctic Ice Sheet divide for 1.4 million years by Hein, Andrew S., Woodward, John, Marrero, Shasta M., Dunning, Stuart A., Steig, Eric J., Freeman, Stewart P. H. T., Stuart, Finlay M., Winter, Kate, Westoby, Matthew J., Sugden, David E.

“…Past fluctuations of the West Antarctic Ice Sheet (WAIS) are of fundamental interest because of the possibility of WAIS collapse in the future and a consequent…”
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Assessing the continuity of the blue ice climate record at Patriot Hills, Horseshoe Valley, West Antarctica by Winter, Kate, Woodward, John, Dunning, Stuart A., Turney, Chris S. M., Fogwill, Christopher J., Hein, Andrew S., Golledge, Nicholas R., Bingham, Robert G., Marrero, Shasta M., Sugden, David E., Ross, Neil

“…We use high‐resolution ground‐penetrating radar (GPR) to assess the continuity of the Blue Ice Area (BIA) horizontal climate record at Patriot Hills, Horseshoe…”
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The glacial geomorphology of the Río Corcovado, Río Huemul and Lago Palena/General Vintter valleys, northeastern Patagonia (43°S, 71°W) by Leger, Tancrède P. M., Hein, Andrew S., Bingham, Robert G., Martini, Mateo A., Soteres, Rodrigo L., Sagredo, Esteban A., Martínez, Oscar A.

“…This study presents the first detailed glacial geomorphological map of the sediment-landform assemblages formed by three eastern outlet glaciers of the former…”
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Do blue-ice moraines in the Heritage Range show the West Antarctic ice sheet survived the last interglacial? by Fogwill, Christopher J., Hein, Andrew S., Bentley, Michael J., Sugden, David E.

“…We present a hypothesis that best explains cosmogenic isotope data on blue-ice moraines in the Heritage Range, West Antarctica. The age of the moraines implies…”
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Northeastern Patagonian Glacier Advances (43°S) Reflect Northward Migration of the Southern Westerlies Towards the End of the Last Glaciation by Leger, Tancrède P. M., Hein, Andrew S., Goldberg, Daniel, Schimmelpfennig, Irene, Van Wyk de Vries, Maximillian S., Bingham, Robert G.

“…The last glacial termination was a key event during Earth’s Quaternary history that was associated with rapid, high-magnitude environmental and climatic…”
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Controls on Last Glacial Maximum ice extent in the Weddell Sea embayment, Antarctica by Whitehouse, Pippa L., Bentley, Michael J., Vieli, Andreas, Jamieson, Stewart S. R., Hein, Andrew S., Sugden, David E.

“…The Weddell Sea sector of the Antarctic Ice Sheet is hypothesized to have made a significant contribution to sea‐level rise since the Last Glacial Maximum…”
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The evolution of the Patagonian Ice Sheet from 35 ka to the present day (PATICE) by Davies, Bethan J., Darvill, Christopher M., Lovell, Harold, Bendle, Jacob M., Dowdeswell, Julian A., Fabel, Derek, García, Juan-Luis, Geiger, Alessa, Glasser, Neil F., Gheorghiu, Delia M., Harrison, Stephan, Hein, Andrew S., Kaplan, Michael R., Martin, Julian R.V., Mendelova, Monika, Palmer, Adrian, Pelto, Mauri, Rodés, Ángel, Sagredo, Esteban A., Smedley, Rachel K., Smellie, John L., Thorndycraft, Varyl R.

“…We present PATICE, a GIS database of Patagonian glacial geomorphology and recalibrated chronological data. PATICE includes 58,823 landforms and 1,669…”
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Extensive MIS 3 glaciation in southernmost Patagonia revealed by cosmogenic nuclide dating of outwash sediments by Darvill, Christopher M., Bentley, Michael J., Stokes, Chris R., Hein, Andrew S., Rodés, Ángel

“…The timing and extent of former glacial advances can demonstrate leads and lags during periods of climatic change and their forcing, but this requires robust…”
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Radar‐Detected Englacial Debris in the West Antarctic Ice Sheet by Winter, Kate, Woodward, John, Ross, Neil, Dunning, Stuart A., Hein, Andrew S., Westoby, Matthew J., Culberg, Riley, Marrero, Shasta M., Schroeder, Dustin M., Sugden, David E., Siegert, Martin J.

“…Structural glaci‐geological processes can entrain basal sediment into ice, leading to its transportation and deposition downstream. Sediments potentially rich…”
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Reconstruction of changes in the Weddell Sea sector of the Antarctic Ice Sheet since the Last Glacial Maximum by Hillenbrand, Claus-Dieter, Bentley, Michael J., Stolldorf, Travis D., Hein, Andrew S., Kuhn, Gerhard, Graham, Alastair G.C., Fogwill, Christopher J., Kristoffersen, Yngve, Smith, James. A., Anderson, John B., Larter, Robert D., Melles, Martin, Hodgson, Dominic A., Mulvaney, Robert, Sugden, David E.

“…The Weddell Sea sector is one of the main formation sites for Antarctic Bottom Water and an outlet for about one fifth of Antarctica's continental ice volume…”
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Glacial/interglacial ice-stream stability in the Weddell Sea embayment, Antarctica by Hein, Andrew S., Fogwill, Christopher J., Sugden, David E., Xu, Sheng

“…The resilience of the Antarctic Ice Sheet and its effect on global sea level depends on the dynamics of ice streams. Antarctic ice streams are known to be…”
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Major Ice Sheet Change in the Weddell Sea Sector of West Antarctica Over the Last 5,000 Years by Siegert, Martin J., Kingslake, Jonathan, Ross, Neil, Whitehouse, Pippa L., Woodward, John, Jamieson, Stewart S. R., Bentley, Michael J., Winter, Kate, Wearing, Martin, Hein, Andrew S., Jeofry, Hafeez, Sugden, David E.

“…Until recently, little was known about the Weddell Sea sector of the West Antarctic Ice Sheet. In the last 10 years, a variety of expeditions and numerical…”
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The million-year evolution of the glacial trimline in the southernmost Ellsworth Mountains, Antarctica by Sugden, David E., Hein, Andrew S., Woodward, John, Marrero, Shasta M., Rodés, Ángel, Dunning, Stuart A., Stuart, Finlay M., Freeman, Stewart P.H.T., Winter, Kate, Westoby, Matthew J.

“…An elevated erosional trimline in the heart of West Antarctica in the Ellsworth Mountains tells of thicker ice in the past and represents an important yet…”
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Middle Pleistocene glaciation in Patagonia dated by cosmogenic-nuclide measurements on outwash gravels by Hein, Andrew S., Hulton, Nicholas R.J., Dunai, Tibor J., Schnabel, Christoph, Kaplan, Michael R., Naylor, Mark, Xu, Sheng

“…The well-preserved glacial record in Argentine Patagonia offers a ~ 1 Ma archive of terrestrial climate extremes in southern South America. These glacial…”
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High mid-Holocene accumulation rates over West Antarctica inferred from a pervasive ice-penetrating radar reflector by Bodart, Julien A, Bingham, Robert G, Young, Duncan A, MacGregor, Joseph A, Ashmore, David W, Quartini, Enrica, Hein, Andrew S, Vaughan, David G, Blankenship, Donald D

“…Understanding the past and future evolution of the Antarctic Ice Sheet is challenged by the availability and quality of observed paleo-boundary conditions…”
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A cosmogenic nuclide-derived chronology of pre-Last Glacial Cycle glaciations during MIS 8 and MIS 6 in northern Patagonia by Leger, Tancrède P. M, Hein, Andrew S, Rodés, Ángel, Bingham, Robert G, Schimmelpfennig, Irene, Fabel, Derek, Tapia, Pablo

“…The precise environmental mechanisms controlling Quaternary glacial cycles remain ambiguous. To address this problem, it is critical to better comprehend the…”
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The Last Glacial Maximum and Deglacial History of the Seno Skyring Ice Lobe (52°S), Southern Patagonia by Lira, María-Paz, García, Juan-Luis, Bentley, Michael J., Jamieson, Stewart S. R., Darvill, Christopher M., Hein, Andrew S., Fernández, Hans, Rodés, Ángel, Fabel, Derek, Smedley, Rachel K., Binnie, Steven A.

“…There are still many uncertainties about the climatic forcing that drove the glacier fluctuations of the Patagonian Ice Sheet (PIS, 38–55°S) during the last…”
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