Results 81 to 90 of about 912 (179)

Understanding Ancient Moose Populations in the Southern Rocky Mountains

Journal of Biogeography, Volume 53, Issue 6, June 2026.
ABSTRACT Moose (Alces alces) are an iconic symbol of contemporary Rocky Mountain ecosystems, and their growing abundance in Colorado and other portions of the Southern Rockies has inspired debate around their regional prehistory prior to their 20th century translocation. The Early Holocene biogeography of moose in North America is poorly characterised,
William T. T. Taylor, John A. F. Wendt, Jonathan Dombrosky, Crystal C'Bearing, Mikayla Costales, Isaac A. Hart, Journey LeBeau, Adrian Johnson, Elena Lompe, Russell W. Graham, Chance Ward, Emily Lena Jones, Joshua H. Miller   +12 more
wiley   +1 more source

Calving dynamics at Jakobshavn Isbrae (Sermeq Kujalleq) controlled by local geometry: insights from a 3D Stokes calving model

Journal of Glaciology
We present the first simulations of Jakobshavn Isbrae (Sermeq Kujalleq), west Greenland, using a 3D Stokes calving model that permits unrestricted advance and retreat.
Iain Wheel, Anna J. Crawford, Douglas I. Benn   +2 more
doaj   +1 more source

Drivers of Basal Melt Variability for Pine Island Glacier Ice Shelf: Ocean Forcing Versus Geometric Feedback

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Since the 1970s, Pine Island Glacier has exhibited thinning, acceleration, and retreat. During the last decade, the ice shelf has undergone major geometric changes, whilst the quantity and temperature of modified Circumpolar Deep Water on the Amundsen Sea continental shelf fluctuated significantly.
Katie Lowery, Paul R. Holland, Pierre Dutrieux, Anna E. Hogg, Noel Gourmelen   +4 more
wiley   +1 more source

Temporal Variations in Seismic Ambient Noise Identify Seasonal Changes in Basal Conditions at Sermeq Kujalleq in Kangia, Greenland

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Subglacial processes are key to glacier dynamics but remain poorly constrained due to limited in situ observations. We use continuous seismic and Global Navigation Satellite System (GNSS) measurements to investigate summer basal conditions at Sermeq Kujalleq in Kangia (SKK; Jakobshavn Isbræ), Kalaallit Nunaat (Greenland).
Janneke van Ginkel, Adrien Wehrlé, Ana Nap, Fabian Walter, Andrea Kneib‐Walter, Hugo Rousseau, Martin P. Lüthi   +6 more
wiley   +1 more source

Internal tsunamigenesis and ocean mixing driven by glacier calving in Antarctica. [PDF]

Sci Adv, 2022
Meredith MP, Inall ME, Brearley JA, Ehmen T, Sheen K, Munday D, Cook A, Retallick K, Van Landeghem K, Gerrish L, Annett A, Carvalho F, Jones R, Naveira Garabato AC, Bull CYS, Wallis BJ, Hogg AE, Scourse J.   +17 more
europepmc   +1 more source

Calving front positions for 42 key glaciers of the Antarctic Peninsula Ice Sheet: a sub-seasonal record from 2013 to 2023 based on deep-learning application to Landsat multi-spectral imagery [PDF]

Earth System Science Data
Calving front positions of marine-terminating glaciers are an essential parameter for understanding dynamic glacier changes and constraining ice modelling.
E. Loebel, E. Loebel, C. A. Baumhoer, A. Dietz, M. Scheinert, M. Horwath   +5 more
doaj   +1 more source

A dramatic 800-m retreat of a lake-terminating glacier on the Tibetan Plateau during 2014–2015, caused by glacier calving

Journal of Glaciology
Compared to land-terminating glaciers, lake-terminating glaciers generally experience a higher mass loss due to the feedback from processes such as calving, dynamic thinning and flow acceleration associated with proglacial lakes.
Xuanru Zhao, Bo Cao, Weijin Guan, Yuxuan Chen, Xinzhe Tian, Guangjian Wu, Baotian Pan   +6 more
doaj   +1 more source

Surface dynamics and history of the calving cycle of Astrolabe Glacier (Adélie Coast, Antarctica) derived from satellite imagery [PDF]

The Cryosphere
The recent calving of Astrolabe Glacier on the Adélie Coast (East Antarctica) in November 2021 presents an opportunity to better understand the processes leading to ice tongue fracturing.
F. Provost, D. Zigone, D. Zigone, E. Le Meur, J.-P. Malet, J.-P. Malet, C. Hibert, C. Hibert   +7 more
doaj   +1 more source

Grounding Zone of Helheim Glacier, Greenland, From Terrestrial Radar Interferometry

Geophysical Research Letters
Helheim Glacier, in East Greenland, is a major outlet glacier that discharges about 33 Gigatons of ice per year into the ocean. Helheim has been undergoing a retreat since 2003.
Jae Hun Kim, Eric Rignot, Hanning Chen, David Holland, Denise Holland   +4 more
doaj   +1 more source

Modeling the Controls on the Front Position of a Tidewater Glacier in Svalbard

Frontiers in Earth Science, 2017
Calving is an important mass-loss process at ice sheet and marine-terminating glacier margins, but identifying and quantifying its principal driving mechanisms remains challenging.
Jaime Otero, Francisco J. Navarro, Javier J. Lapazaran, Ethan Welty, Darek Puczko, Roman Finkelnburg   +5 more
doaj   +1 more source