Results 101 to 110 of about 20,609 (205)
Five decades of strong temporal variability in the flow of Brunt Ice Shelf, Antarctica [PDF]
Data showing velocity changes on the Brunt Ice Shelf (BIS), Antarctica, over the last 55 years are presented and analysed. During this period no large-scale calving events took place and the ice shelf gradually grew in size. Ice flow velocities, however,
De Rydt, Jan +2 more
core +2 more sources
Empirical constraints on ice-cliff calving
Abstract When calving cliffs at the margins of Earth’s ice sheets are taller than a critical height, runaway ice retreat may be triggered in a mechanism called the marine ice-cliff instability. However, this idea remains controversial, because tall cliffs for which this process applies have rarely been observed.
Caroline Needell +2 more
openaire +1 more source
ABSTRACT The sediment signature of glacial erosion products exported from Hudson Strait to the Labrador Sea during Hudson Strait Heinrich (HS‐H) events is evaluated using four distinct proxies: paired δ18Ο and δ13C data on the carbonate fraction, εNd and U–Pb isotopes in the silicate fraction, the mineral composition of the <2 mm bulk sediment fraction,
John T. Andrews +3 more
wiley +1 more source
Wave erosion, frontal bending, and calving at Ross Ice Shelf [PDF]
Ice shelf calving constitutes roughly half of the total mass loss from the Antarctic ice sheet. Although much attention is paid to calving of giant tabular icebergs, these events are relatively rare.
N. B. Sartore +4 more
doaj +1 more source
Assessing potential impacts of black bear predation on neonatal mortality in boreal caribou
We used simulations to show that even if caribou give birth in areas with the least chance of encountering a black bear, there are so many bears on the landscape that predation risk for caribou calves can still be quite high. Bear densities used in our simulation were typical for the boreal forest.
Liam G. Horne +6 more
wiley +1 more source
Tracking icebergs with time-lapse photography and sparse optical flow, LeConte Bay, Alaska, 2016–2017 [PDF]
We present a workflow to track icebergs in proglacial fjords using oblique time-lapse photos and the Lucas-Kanade optical flow algorithm. We employ the workflow at LeConte Bay, Alaska, where we ran five time-lapse cameras between April 2016 and ...
Amundson, Jason M. +9 more
core +2 more sources
Sea-level response to ice sheet evolution: An ocean perspective [PDF]
The ocean's influence upon and response to Antarctic ice sheet changes is considered in relation to sea level rise over recent and future decades. Assuming present day ice fronts are in approximate equilibrium, a preliminary budget for the ice sheet is ...
Jacobs, Stanley S.
core +1 more source
A century of variation in the dependence of Greenland iceberg calving on ice sheet surface mass balance and regional climate change [PDF]
Iceberg calving is a major component of the total mass balance of the Greenland ice sheet (GrIS). A century-long record of Greenland icebergs comes from the International Ice Patrol's record of icebergs (I48N) passing latitude 48° N, off Newfoundland ...
Bigg, G .R. +6 more
core +1 more source
An Intensive Observation of Calving at Helheim Glacier, East Greenland [PDF]
Calving of glacial ice into the ocean from the Greenland Ice Sheet is an important component of global sea level rise. The calving process itself is relatively poorly observed, understood, and modeled; as such, it represents a bottleneck in improving ...
Byron Parizek +11 more
core +3 more sources
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 +2 more
doaj +1 more source

