Results 111 to 120 of about 101,389 (308)

Expelled by the Antarctic ice: Evolutionary history of the tribe Cunonieae (Cunoniaceae)

Journal of Systematics and Evolution, EarlyView.
Multiple fossil calibration points reveal recent radiations and biogeographical history of the Cunonieae tribe. The most densely sampled phylogeny allowed to infer Antarctica and Patagonia as areas of origin, confirming the reestablishment of Pterophylla and revealing the northward movement of Weinmannia into the tropical Andes. Conflicting plastid and
Francisco Fajardo‐Gutiérrez, Mariasole Calbi, Markus S. Dillenberger, Sebastian Tello, Alfredo Fuentes, Nora H. Oleas, Ricardo A. Segovia, Christine E. Edwards, Yohan Pillon, James E. Richardson, Thomas Borsch   +10 more
wiley   +1 more source

Evolving Understanding of Antarctic Ice‐Sheet Physics and Ambiguity in Probabilistic Sea‐Level Projections [PDF]

, 2017
Mechanisms such as ice‐shelf hydrofracturing and ice‐cliff collapse may rapidly increase discharge from marine‐based ice sheets. Here, we link a probabilistic framework for sea‐level projections to a small ensemble of Antarctic ice‐sheet (AIS ...
Robert E Kopp, R. DeConto, D. Bader, Carling Hay, R. Horton, S. Kulp, M. Oppenheimer, D. Pollard, B. Strauss   +8 more
semanticscholar   +1 more source

Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse

Nature Communications, 2016
The peak in Antarctic ice core isotope values, 128,000 years before present, was concurrent with a significantly warmer-than-present Antarctic climate.
Max D. Holloway, Louise C. Sime, Joy S. Singarayer, Julia C. Tindall, Pete Bunch, Paul J. Valdes   +5 more
doaj   +1 more source

Identifying the Impacts of Sea Ice Variability on the Climate and Surface Mass Balance of West Antarctica

Geophysical Research Letters, 2023
The Antarctic ice sheet (AIS) is the largest freshwater body on Earth and a major component of the sea level budget. Over the satellite era, the AIS has experienced ∼130 Gt/year of mass loss.
Jessica D. Kromer, Luke D. Trusel
doaj   +1 more source

A temperate former West Antarctic ice sheet suggested by an extensive zone of bed channels [PDF]

, 2014
Several recent studies predict that the West Antarctic Ice Sheet will become increasingly unstable under warmer conditions. Insights on such change can be assisted through investigations of the subglacial landscape, which contains imprints of former ice ...
Anne M. Le Brocq, Bamber, Bartholomew, Bartholomew, Cook, Cowton, David M. Rippin, DeConto, Dowsett, Fausto Ferraccioli, Fowler, Fretwell, Haran, Hugh F.J. Corr, Jordan, Joughin, Kathryn C. Rose, Le Brocq, Lewis, Martin J. Siegert, Miller, Mote, Naish, Neil Ross, Nitsche, Pritchard, Raymo, Rignot, Robert G. Bingham, Ross, Ross, Schoof, Shepherd, Smith, Sugden, Tom A. Jordan, Trusel, Wingham, Wright, Wright, Young, Zachos   +41 more
core   +1 more source

Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve [PDF]

, 2016
Recent estimates of global mean sea level based on the oxygen isotope composition of mid-Pliocene benthic foraminifera vary from 9 to 21 m above present, which has differing implications for the past stability of the Antarctic ice sheet during an ...
David Pollard, DeConto, Edward Gasson, Langebroek, Raymo, Robert M. DeConto   +5 more
core   +1 more source

Ice cores and SeaRISE: What we do (and don't) know [PDF]

Ice core analyses are needed in SeaRISE to learn what the West Antarctic ice sheet and other marine ice sheets were like in the past, what climate changes led to their present states, and how they behave.
Alley, Richard B.
core   +1 more source

Surface exposure ages imply multiple low-amplitude Pleistocene variations in East Antarctic Ice Sheet, Ricker Hills, Victoria Land [PDF]

, 2017
One of the major issues in (palaeo-) climatology is the response of Antarctic ice sheets to global climate changes. Antarctic ice volume has varied in the past but the extent and timing of these fluctuations are not well known.
Baroni, Carlo, Baur, Heinrich, Di Nicola, Luigia, Kubik, Peter W., Salvatore, Maria Cristina, Schlüchter, Christian, Strasky, Stefan, Wieler, Rainer   +7 more
core  

Temperature Variability Response in the Warm Eocene and Pliocene

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Extreme temperature events, which are strongly influenced by temperature variability, are becoming increasingly dramatic under global warming. The temperature variability during past warm periods, like the Eocene and Pliocene, can provide useful analog information for our future climate.
Tiantian Shen, Ran Zhang, Jiawen Shi, Junsheng Nie, Peng Gao   +4 more
wiley   +1 more source

Inferring Antarctic Ice Dynamics and Boundary Conditions From the Ice Sheet's Basal Unit

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract In their study, Young et al. (2025, https://doi.org/10.1029/2025GL115729) employ airborne radio‐echo sounding data to map the basal unit over the East Antarctic Ice Sheet over a large area between Dome A and South Pole. The authors use the results to infer conclusions about ice‐dynamic behavior of the ice sheet, geology, temporal development ...
Olaf Eisen
wiley   +1 more source