Results 101 to 110 of about 32,496 (283)

The role of inland ice dynamics in controlling the variable maximum extent of the Laurentide Ice Sheet off southeastern Baffin Island

Boreas, EarlyView.
Reconstructions of the maximum extent of the Laurentide Ice Sheet (LIS) and its associated ice flows at the Last Glacial Maximum (LGM) are needed for understanding how marine‐based ice sheets will respond to modern climate change. Here, we provide evidence for the location of the maximal extent of the LIS margin during the LGM in Merchants and ...
Alexis P. Belko, Patrick Lajeunesse, Alexandre Normandeau, Pierre‐Olivier Couette, Etienne Brouard   +4 more
wiley   +1 more source

Decadal changes of Campbell Glacier Tongue in East Antarctica from 2010 to 2020 and implications of ice pinning conditions analyzed by optical and SAR datasets

GIScience & Remote Sensing, 2022
Changes in ice shelf dynamics significantly impact the discharge rate of grounded ice, sea ice formation, and marine environments. In particular, changes of a sub-shelf pinning point induce complex dynamics of an ice shelf. In this study, we investigated
Hyangsun Han, Seung Hee Kim, Sanghee Kim
doaj   +1 more source

The variability of tidewater-glacier calving: origin of event-size and interval distributions [PDF]

, 2012
Calving activity at the termini of tidewater glaciers produces a wide range of iceberg sizes at irregular intervals. We present calving-event data obtained from continuous observations of the termini of two tidewater glaciers on Svalbard, and show that the distributions of event sizes and inter-event intervals can be reproduced by a simple calving ...
arxiv   +1 more source

Complex past ice flow from Norway to the North Sea Plateau during the Quaternary: evidence from Marstein Trough and earlier reconstructions using 3D seismic data sets

Boreas, EarlyView.
We have mapped a 60 km long, 30 km wide, 120 m deep buried glacially eroded trough on the North Sea Plateau, west of the Norwegian Channel (59°N, 3°E). The trough was carved out by an ice stream that flowed out from western Norway and crossed the Norwegian Channel in a southwestern direction during the penultimate or Saalian glaciation.
Dag Ottesen, James D. Kirkham, Julian A. Dowdeswell, Harald Brunstad, Morten Halvorsen   +4 more
wiley   +1 more source

Changes in Imja Tsho in the Mount Everest Region of Nepal [PDF]

, 2014
Imja Tsho, located in the Sagarmatha ( Everest) National Park of Nepal, is one of the most studied and rapidly growing lakes in the Himalayan range. Compared with previous studies, the results of our sonar bathymetric survey conducted in September of ...
Byers, A. C., McKinney, D. C., Rounce, D. R., Somos-Valenzuela, M. A.   +3 more
core   +2 more sources

The role of shallow banks and marine ice domes in marine‐based ice‐sheet deglaciation

Boreas, EarlyView.
Marine‐based ice sheets are susceptible to collapse and faster retreat than their land‐terminating counterparts. One of the key factors contributing to the relative stability of marine‐terminating ice sheets is the presence of shallow bathymetric banks and islands acting as pinning points for the ice sheet.
Bartosz Kurjanski, Brice R. Rea, Matteo Spagnolo   +2 more
wiley   +1 more source

Semi‐Automated Detection of Right Whales (Eubalaena spp.) in Very High‐Resolution Satellite Imagery

Marine Mammal Science, EarlyView.
ABSTRACT Space‐based detection of whales is proliferating because it shows promise as a monitoring tool, yet tests of its application across taxa and environments are rare. The objective of this study was to develop an end‐to‐end, semi‐automated procedure for detecting two right whale species (Eubalaena glacialis and E. australis) in satellite imagery.
Kimberley T. A. Davies, Anne Webster, Vinoth Babu, Sean W. Brillant, Cody G. Carlyle, Gina L. Lonati, Harsh Sharma, Olivier W. Tsui   +7 more
wiley   +1 more source

Investigating Harvest and Vessel Traffic Exposure as Drivers of Social Group Characteristics in Canadian Beluga (Delphinapterus leucas) Populations

Marine Mammal Science, EarlyView.
ABSTRACT Assessing variation in social behaviors of group‐living animals may provide insight into the impacts of population stressors. Using very high resolution (VHR) satellite imagery acquired over 3 years, we compared social group size and composition, as well as spatial and social cohesion in three beluga (Delphinapterus leucas) populations that ...
Jordan B. Stewart, John Iacozza, Lisa Loseto, Cortney A. Watt   +3 more
wiley   +1 more source

1150 year long ice core record of the Ross Sea Polynya, Antarctica [PDF]

arXiv, 2020
Knowledge of the past behavior of Antarctic polynyas such as the Ross and Weddell Seas contributes to the understanding of biological productivity, sea ice production, katabatic and Southern Hemisphere Westerly (SHW) wind strength, Antarctic bottom water (ABW) formation, and marine CO2 sequestration.
arxiv  

Weddell Sea iceberg drift: Five years of observations [PDF]

, 2006
Since 1999, 52 icebergs have been tagged with GPS buoys in the Weddell Seato enable monitoring of their position. The chosen icebergs were of small tomedium size, with a few icebergs larger than 10 km associatedwith the calving of icebergs A38 and A43 ...
Aoki, Beckmann, Budd, Byrd, E. Fahrbach, Fahrbach, G. Rohardt, GEBCO, Gladstone, Grosfeld, Grosfeld, Gutt, H. H. Hellmer, Harms, Hellmer, Hellmer, Jacobs, Kaleschke, Kirwan, Kottmeier, Lichey, Limbert, M. P. Schodlok, Massom, Molinari, Morgan, Nøst, Orheim, Robertson, Saucier, Schmitt, Schodlok, Schodlok, Sodhi, Swithinbank, Tchernia, Thoma, Thomas, Thorndike, Vihma, Vinje, Wadhams, Weeks, White, Yaremchuk   +44 more
core   +1 more source