Glaciological Studies on Fletcher's Ice Island (T-3)
Glaciological Studies on Fletcher's Ice Island (T-3)

Author: Ukichirō Nakaya

Publisher: Washington, D.C. : Arctic Institute of North America

Published: 1962

Total Pages: 80

ISBN-13:

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Glaciological studies were made on T-3 of the ablation phenomena; the nature of candle ice, including c-axes distribution and histograms of candle lengths; the structure of stratified ice (ice composed of an aggregate of fairly large crystals with small-angle boundaries); and the crystallographic orientation of aggregates of component crystals. Core drilling was done through 34.7m of ice near camp, through 7.5m near Colby Bay, and through 4m-thick old pack ice in the Bay. A heavy dirt layer was observed at 8.4m. Crystallographic examinations, viscoelastic measurements, and chemical analyses were made all along the cores. Results indicate that the island body is composed of three strata: iced firn above the heavy dirt layer; basement ice (divided into four strata) below the dirt layer; and a 1.8m-thick sea ice at the bottom.

Oceanographic Observations at Fletcher's Ice Island (T-3) in the Arctic Ocean in 1959-1960
Oceanographic Observations at Fletcher's Ice Island (T-3) in the Arctic Ocean in 1959-1960

Author: Kou Kosunoki

Publisher:

Published: 1962

Total Pages: 126

ISBN-13:

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Oceanographic obs rvation in the sou h rn Beaufort Sea of the Arctic Ocean were conducted at Fletcher's Ice Island (T-3) between June 1959 and September 1960. An lysis of data on temperature, salinity, and chemical elements revealed five major water masses in his region: Arctic Surface Water, Upper Intermediate Water, Atlantic Water, Low Intermediate Water, and Deep Shelf Water. Intrusion of relatively warm Pacific Water along the 25.5 - 26.0 isopycnal surface at about 75 m was characteristic. The temperature structure of the deep water in the Beaufort Basin showed that there is a relatively warm water mass at depths below 880 m (Lo r Intermediate Water), which is warmer than bottom waters in the Atlantic Water occurring between he upper and lower 0 C isotherms (250 m and 880 m respectively) is characterized by positive temperatures, having a maximum of 0.45 C at about 450 m. Deep Shelf Water is found at 15 m to 40 m on the very shallow continental shelf, being characterized by relatively low temperatures and abundance of silicon. E SONAL CHANGES IN TEMPERATURE AND OTHER OCEANOGRAPHIC ELEMENTS IN THE SURFACE LAYER ARE DESCRIBED IN CONNECTION WITH SUMMER HEATING AND WINTER ICE FORMATION. (Au hor).

GRD Research Notes
GRD Research Notes

Author: Air Force Cambridge Research Laboratories (U.S.). Geophysics Research Directorate

Publisher:

Published: 1959

Total Pages: 192

ISBN-13:

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Arctic Ice Shelves and Ice Islands
Arctic Ice Shelves and Ice Islands

Author: Luke Copland

Publisher: Springer

Published: 2017-05-30

Total Pages: 426

ISBN-13: 9402411011

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This book provides an overview of the current state of knowledge of Arctic ice shelves, ice islands and related features. Ice shelves are permanent areas of ice which float on the ocean surface while attached to the coast, and typically occur in very cold environments where perennial sea ice builds up to great thickness, and/or where glaciers flow off the land and are preserved on the ocean surface. These landscape features are relatively poorly studied in the Arctic, yet they are potentially highly sensitive indicators of climate change because they respond to changes in atmospheric, oceanic and glaciological conditions. Recent fracturing and breakup events of ice shelves in the Canadian High Arctic have attracted significant scientific and public attention, and produced large ice islands which may pose a risk to Arctic shipping and offshore infrastructure. Much has been published about Antarctic ice shelves, but to date there has not been a dedicated book about Arctic ice shelves or ice islands. This book fills that gap.