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26 sty 2014 · To establish the onset and history of perennial ice in the Arctic, a simple premise is that perennial ice existed if the sources of ice-rafted detritus (IRD) are far enough from the ACEX...
28 lut 2014 · Following early Palaeogene greenhouse conditions, seasonal sea ice in the Arctic developed during a period of relative cooling in the middle Eocene, some 47.5 million years ago. However,...
To establish the onset and history of perennial ice in the Arctic, a simple premise is that perennial ice existed if the sources of ice-rafted detritus (IRD) are far enough from the ACEX...
The Arctic sea ice covers less area in the summer than in the winter. The multi-year (i.e. perennial) sea ice covers nearly all of the central deep basins. The Arctic sea ice and its related biota are unique, and the year-round persistence of the ice has allowed the development of ice endemic species, meaning species not found anywhere else.. There are differing scientific opinions about how ...
12 kwi 2022 · In this study, the Arctic area north of 60°N latitude (AO60) is classified into three categories based on sea ice persistence in each satellite grid cell: seasonal ice-covered area (SICA), where sea ice exists for less than 95% of the days in a year; perennial ice-covered area (PICA), where sea ice exists for 95% or more of the days in a year ...
2 lut 2012 · The glacial history of the Earth is outlined and an introduction to chemistry, physics, and the biological functioning of sea ice, lake ice, supraglacial aquatic environments, subglacial environments, and snow is provided to provide a framework for understanding subsequent detailed chapters.
1 paź 2002 · The perennial sea ice cover in the Arctic is shown to be declining at −9% per decade using satellite data from 1978 to 2000. A sustained decline at this rate would mean the disappearance of the multiyear ice cover during this century and drastic changes in the Arctic climate system.
