Drift characteristics of northeastern Bering Sea ice during 1980
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Drift characteristics of northeastern Bering Sea ice during 1980 by Carol H Pease

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Published by U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories in [Boulder, Colo.?] .
Written in


  • Sea ice drift -- Bering Sea

Book details:

Edition Notes

StatementC.H. Pease, S.A. Salo
SeriesNOAA technical memorandum ERL PMEL -- 32
ContributionsSalo, S. A, Environmental Research Laboratories (U.S.), Pacific Marine Environmental Laboratory (U.S.)
The Physical Object
Paginationvi, 78 p. :
Number of Pages78
ID Numbers
Open LibraryOL13605623M

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eastern Bering Sea (Fig. 1) indicated that an ice floe is typically created along the coastlines of Alaska or St. Lawrence Island and drifts southwestward, primarily under the influence of net northeasterly winds, until it melts at the ice edge (Muench and Ahlnas, ; Pease, ; McNutt, ). Measurements taken by PMEL in February of ice drift. Get this from a library! Drift characteristics of northeastern Bering Sea ice during [Michael Reynolds; Carol H Pease; Pacific Marine Environmental Laboratory (U.S.)]. Barents Sea drift ice characteristics 63 Fig. 4. Infrared NOAA AVHRR image showing lee polynyas and fracture patterns in the Barents Sea during a period with northerly winds, 27 February. Sea (Vinje & Finnekisa ). (This corresponds to a fresh water supply to the Greenland Sea of the same order as the Amazon discharge.) InCited by: In the northern Bering Sea, for which we will use the operational definition as being located north of St. Matthew Island, ice melt usually begins in April [Pease, ] and by late June the sea.

Weather in the northeastern Bering Sea during winter is harsh (Karpova , Mean directions (azimuths) of sea-ice drift during the winters of – were statistically similar among all years except , suggests that, although , –, , and had the greatest number of days with extreme ice.   Considered is the drift of 10 icebergs and 18 ice fields in the northeastern part of the Barents Sea from late May to September The drift speed is estimated by GPS measurements of geographic coordinates, and the wind, using the air pressure field. The drift variability in the range of synoptic and intraseasonal variability is analyzed by the vector-algebraic method based on the model . Pritchard, R.S., Norton Sound and northeastern Bering Sea ice behavior: In: Sodhi DS, Luk CH, Sinha NK (eds) Proceedings of the seventh international conference on offshore mechanics and Arctic engineering, Vol 4, Am. Soc. Mech. Eng., New York, p Google Scholar.   The Barents Sea is an active area for rapid Arctic climate change because of intense air–sea interaction (Smedsrud et al ).A significant increase of tropospheric air temperature during fall and winter results from substantial sea-ice retreat and/or change of atmospheric circulation (Serreze et al ).It has been thought that an anomaly of turbulent heat fluxes over the Barents Sea.

Hydrographic data from the southern margin of the ice (seaward limit) showed that a lens of less saline, colder water existed in the upper 20 m of the water column along the southern ice margin. During north-to-northeast wind events, floes were advected toward the south to southwest at rates as high as m s −1 and rotted along the margin on the order of days. Little ridging of ice was observed over .   In contrast to these long-term trends, we observe more complex multi-year variability in sea ice persistence in the Bering Sea where – was characterized by high interannual variability in sea ice, – was characterized by relatively low sea ice cover during a warm period, and – was characterized by relatively high. Sea ice begins as thin sheets of smooth nilas in calm water (top) or disks of pancake ice in choppy water (2 nd image). Individual pieces pile up to form rafts and eventually solidify (3 rd image). Over time, large sheets of ice collide, forming thick pressure ridges along the margins (4 th image). (Nilas, pancake, and ice raft photographs courtesy Don Perovich, Cold Regions Research and.   The fastest monthly mean wind speed of m s −1 was recorded at Gambell during February (Figure 4e) and caused a peak in Bering Sea ice drift speeds of 8 cm s −1. During April and May ice drift slowed to ∼2 cm s −1 under the force of cm s −1 and cm s −1 northerly winds at Gambell. Sea ice within the Bering Sea drifted.