Results 61 to 70 of about 2,443,175 (254)
Remote Sensing, 2019 Due to the inherent characteristics of the electromagnetic wave scattering phenomenon, synthetic aperture radar (SAR) images are directly degraded by high-frequency multiplicative speckle (HMS) noise, which makes image de-speckling filter application and
Iman Heidarpour Shahrezaei +1 more
doaj +1 more source
Sea Ice Elevation in the Western Weddell Sea, Antarctica: Observations From Field Campaign
Earth and Space Science, 2022 Sea ice elevation is crucial in the characterization of three‐dimensional (3D) sea ice patterns, providing physical insights to advance sea ice dynamic models. Moreover, how sea ice elevation may be related to the ocean geophysical environment is still a
Lanqing Huang +2 more
doaj +1 more source
In situ primary production in young Antarctic sea ice [PDF]
, 2002 An in situ incubation technique used successfully to measure the photosynthetic carbon assimilation of internal algal assemblages within thick multiyear Arctic sea ice was developed and improved to measure the photosynthetic carbon assimilation within ...
Mock, Thomas
core +1 more source
In Situ Experimental Study of the Friction of Sea Ice and Steel on Sea Ice [PDF]
Applied Sciences, 2018 The kinetic coefficient of friction μk was measured for sea ice, stainless steel, and coated steel sliding on a natural sea ice cover. The effects of normal stress (3.10–8.11 kPa), ice columnar grain orientation (vertical and parallel to the sliding direction), sliding velocity (0.02–2.97 m·s–1), and contact material were investigated.
Wang, Qingkai +4 more
openaire +4 more sources
Factors controlling the bifurcation structure of sea ice retreat [PDF]
, 2012 The contrast in surface albedo between sea ice and open ocean suggests the possibility of an unstable climate state flanked by two separate stable climate states. Previous studies using idealized single-column models and comprehensive climate models have
Eisenman, Ian
core +1 more source
Strategies for the Simulation of Sea Ice Organic Chemistry: Arctic Tests and Development
Geosciences, 2017 A numerical mechanism connecting ice algal ecodynamics with the buildup of organic macromolecules is tested within modeled pan-Arctic brine channels. The simulations take place offline in a reduced representation of sea ice geochemistry.
Scott Elliott +7 more
doaj +1 more source
Proceedings of the National Academy of Sciences of the United States of America, 2019 Significance A newly completed 40-y record of satellite observations is used to quantify changes in Antarctic sea ice coverage since the late 1970s. Sea ice spreads over vast areas and has major impacts on the rest of the climate system, reflecting solar
C. L. Parkinson
semanticscholar +1 more source
Polar Research, 2022 Sea-ice cover across the Arctic has declined rapidly over the past several decades owing to amplified climate warming. The Pacific walrus (Odobenus rosmarus divergens) relies on sea-ice floes in the St. Lawrence Island (SLI) and Wainwright regions of the
Anthony Himmelberger +2 more
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Sea ice phenology in the Caspian Sea
Advances in Oceanography and Limnology, 2021 To understand the spatial and temporal variations in the extent and timing of sea ice in the Caspian Sea (CS), 15 years of sea ice presence and its phenology (freeze-up, break-up, and duration) were studied in the Northern CS (NCS) for a period from 2004 to 2018.
openaire +3 more sources
SAR deep learning sea ice retrieval trained with airborne laser scanner measurements from the MOSAiC expedition [PDF]
The CryosphereAutomated sea ice charting from synthetic aperture radar (SAR) has been researched for more than a decade, and we are still not close to unlocking the full potential of automated solutions in terms of resolution and accuracy.
K. Kortum +8 more
doaj +1 more source