Results 81 to 90 of about 574,554 (206)

Recent circum-Arctic ice-wedge degradation and its hydrological impacts [PDF]

, 2016
Ice-wedges are common permafrost features formed over hundreds to thousands of years of repeated frost cracking and ice vein growth. We used field and remote sensing observations to assess changes in areas dominated by ice-wedges, and we simulated the ...
Iijima, Yoshihiro, Schulla, Jörg, Tape, Ken D., Zona, Donatella, Liljedahl, Anna K., Grosse, Guido, Frost, Gerald V., Wilson, Cathy J., Matveyeva, Nadya, Romanovsky, Vladimir E., Boike, Julia, Fedorov, Alexander N., Raynolds, Martha K., Daanen, Ronald P., Yabuki, Hironori, Hinzman, Larry D., Walker, Donald A., Jorgenson, Janet C., Necsoiu, Marius   +18 more
core   +2 more sources

Detection and Quantification of Spreading Depolarization in Drosophila melanogaster Using High‐Throughput, Wide‐Field Brain Imaging

Current Protocols, Volume 6, Issue 10, October 2026.
Abstract Spreading depolarization (SD) is a ubiquitous neural phenomenon implicated in mammalian neurological disorders including cerebral ischemia, brain death, stroke, brain injury, and migraine, as well as in insect chill coma. During SD, a breakdown of ion homeostasis and a slowly spreading wave of neural depolarization leads to processing deficits,
Wolfgang Stein, Allison L. Harris
wiley   +1 more source

Geomorphologica and climatic factors influencing morphological features of ice wedge polygons in arctic zone [PDF]

, 2012
Location and climate factors governing morphological features of ice wedge polygons in arctic zone Abstract This thesis reports the geometry of active soil and ice-wedge polygonal network located along the Canadian Arctic and in Alaska.
Kysilka, Tomáš
core  

High-resolution maps of ice wedge polygon occurrence and geomorphology

, 2019
We mapped the occurrence of more than one million ice wedge polygons over a landscape of approximately 1,200 square kilometers, just south of Prudhoe Bay in northern Alaska, USA.
Young, Michael H, Abolt, Charles J
core   +1 more source

Mapping Oil Spills and Offshore Industrial Activities in the Northwest Atlantic for Marine Conservation and Management

Geoscience Data Journal, Volume 13, Issue 4, October 2026.
An integrated, high‐resolution map of cumulative anthropogenic pressures in the Northwest Atlantic, combining oil pollution, offshore infrastructure, vessel traffic and artificial light. This harmonized dataset supports reproducible assessments of cumulative risk and informs marine spatial planning, conservation and management across Canada's EEZ and ...
David Beauchesne, Kevin Cazelles, Stephanie Avery‐Gomm, April Hedd, Philippe Muise, Robert A. Ronconi, Katharine R. Studholme, Sarah N. P. Wong   +7 more
wiley   +1 more source

Remote sensing-based framework for detecting and interpreting permafrost terrain hydrologic connectivity

Frontiers in Earth Science
Thermal shifts have accelerated ice-wedge degradation and reorganized polygonal trough networks along the Utqiaġvik, Alaska coastline. Thus, quantifying their structural variability and hydrologic connectivity across spatial scales remains challenging ...
David F. Richards, Trina L. Merrick, Andrei Abelev, Michael Vermillion, Maya Maciel-Seidman, Sofia M. Grossman   +5 more
doaj   +1 more source

Experimental and field evidence indicate that islet‐nesting tundra birds experience reduced nest predation and benefit indirectly from high snow goose densities

Oikos, Volume 2026, Issue 10, October 2026.
Landscape features can shape the occurrence and strength of predator–prey interactions by influencing predation risk and prey distribution. In the High Arctic, some bird species select nesting sites with physical features that impede access for their main terrestrial predator, the Arctic fox.
Marylou Beaudoin, Andréanne Beardsell, Éliane Duchesne, Madeleine‐Zoé Corbeil‐Robitaille, Pierre Legagneux, Dominique Berteaux, Joël Bêty   +6 more
wiley   +1 more source

Repeated Pleistocene Permafrost Episodes in the Western Pannonian Basin

Permafrost and Periglacial Processes, Volume 37, Issue 4, Page 623-644, October/December 2026.
ABSTRACT Concerning the study of past periglacial processes, the Pannonian Basin is a key area as it contains the southernmost frost polygons found in Central Europe. The presence or absence of permafrost is still, however, a matter of debate, and data on the timing of frost action are also scarce.
Krisztina Sebe, Ágnes Novothny, Gergely Surányi, Barbara Varga, László Fodor, Gábor Csillag   +5 more
wiley   +1 more source

Comparing Multiscale Object-Based Image Analysis and Deep Learning for High-Resolution Classification of Ice Wedge Polygon Tundra

Canadian Journal of Remote Sensing
Rising Arctic temperatures are making polygonal tundra increasingly vulnerable, primarily due to high ground ice contents. These landscapes form through soil-hydrology interactions, leading to ice wedge formation and degradation. Understanding the future
Julia Wagner, Gustaf Hugelius
doaj   +1 more source

Internal Structure, Kinematics, and Prehistory of Frozen Debris Lobe‐A (FDL‐A), Brooks Range, Alaska

Permafrost and Periglacial Processes, Volume 37, Issue 4, Page 645-667, October/December 2026.
ABSTRACT Frozen Debris Lobe‐A (FDL‐A)—one of hundreds of FDLs in the Brooks Range of northern Alaska—is a slow‐moving landslide in permafrost that has been the subject of research since 2008 due to its close proximity to the Dalton Highway. Here, we synthesize more than a decade's worth of climate and surface measurements of monitored FDLs, and the ...
Margaret M. Darrow, Esther L. Babcock, Ben A. Leshchinsky   +2 more
wiley   +1 more source