Arctic marginal ice zone trending wider in summer and narrower in winter
نویسندگان
چکیده
منابع مشابه
Marine Birds in the Marginal Ice Zone of the Barents Sea in Late Winter and Spring
We recorded the distribution and abundance of marine birds in the northern Barents Sea from 27 February to 8 March 1987 and from 20 to 31 May 1988. Birds were more abundant in waters associated with pack ice than in open water away from pack ice. Within the pack ice, thick-billed murres (Uria lomvia) were the most commonly encountered birds in both periods. Murre densities in the pack ice north...
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Photoheterotrophic microbes, which are capable of utilizing dissolved organic materials and harvesting light energy, include coccoid cyanobacteria (Synechococcus and Prochlorococcus), aerobic anoxygenic phototrophic (AAP) bacteria, and proteorhodopsin (PR)-containing bacteria. Our knowledge of photoheterotrophic microbes is largely incomplete, especially for high-latitude waters such as the Arc...
متن کاملGranular flow in the marginal ice zone.
The region of sea ice near the edge of the sea ice pack is known as the marginal ice zone (MIZ), and its dynamics are complicated by ocean wave interaction with the ice cover, strong gradients in the atmosphere and ocean and variations in sea ice rheology. This paper focuses on the role of sea ice rheology in determining the dynamics of the MIZ. Here, sea ice is treated as a granular material w...
متن کاملUsing Temporal Information in an Automated Classification of Summer, Marginal Ice Zone Imagery
Synthetic aperture radar (SAR) imagery is difficdt to classify under summer melt conditions, even with the human eye. BackScatter instability causu the intensities of the fiistyear ice, multiyear ice, and open water classes to intermix, thus making an intensity-based classification invalid. The method p~nted in this paper supplements backscatter information from SAR data with wind and temporall...
متن کاملShallow methylmercury production in the marginal sea ice zone of the central Arctic Ocean
Methylmercury (MeHg) is a neurotoxic compound that threatens wildlife and human health across the Arctic region. Though much is known about the source and dynamics of its inorganic mercury (Hg) precursor, the exact origin of the high MeHg concentrations in Arctic biota remains uncertain. Arctic coastal sediments, coastal marine waters and surface snow are known sites for MeHg production. Observ...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2013
ISSN: 0094-8276,1944-8007
DOI: 10.1002/grl.50928