摘要:

The author presents a regionalization of Yakutia on the basis of the sensitivity of the permafrost environment to disturbance. This is related to parallel mapping of the distribution of segregation ice in permafrost throughout the USSR. Not unexpectedly, the coastal and riverine lowlands of northern Siberia emerge as areas of both maximum ground ice concentrations and maximum sensitivity to disturbance. Other topics discussed include the dangers of ground‐water pollution in permafrost areas and of industrial air pollution under the special meteorological conditions of northern Siberia. The author also speaks out strongly against the large‐scale, mechanized poaching of both fish and game by unauthorized personnel of mining or construction organizations in the North. Finally the need for northern national parks and nature reserves is discussed and six potential sites requiring urgent protection in the form of reserves or natural parks are identified. (The article is based on a paper read in Yakutsk at a session of the Council for Problems of the Biosphere of the Academy of Sciences USSR in July 1978, devoted to environmental protection problems under the particularly severe climatic and permafrost conditions of northern Siberia during the present period of active exploitation and industrial development.)

ISSN:0273-8457    

DOI:10.1080/10889378009377143

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Problems of radar signal interpretation are discussed with particular reference to the Arctic coast of the Soviet Union. The role of various masking factors is considered and shoreline types are classified in terms of reflecting properties.

ISSN:0273-8457    

DOI:10.1080/10889378009377144

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

On the basis of data from seven years of observations from White Glacier, Axel Heiberg Island and the surrounding tundra, the authors have derived an empirical formula for calculating snow depth on the glacier at various elevations from that on the tundra. This formula allows one to acquire mass balance data without the costly and time‐consuming procedures of glacier traverses.

ISSN:0273-8457    

DOI:10.1080/10889378009377145

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Seismic sounding by early Soviet expeditions identified two subglacial mountains in Antarctica: the Gamburtsev Mountains (discovered in 1957–59 and named for the Soviet geophysicist G. A. Gamburtsev) and the Vernadskiy Mountains (named in 1963–64 for the geochemist V. I. Vernadskiy). An attempt is made here to correlate the subsequent air‐borne radar surveys in Enderby Land and around the South Pole and to determine the bedrock topography along the 40–42°E meridian by computing the values of gravity anomalies. A previous supposition that there is no connection between the two subglacial mountain forms is confirmed; they are found to be separated by lower‐lying relief.

ISSN:0273-8457    

DOI:10.1080/10889378009377146

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

The preparation and transportation of the terrigenous and biogenic material that enters into the sedimentation in the coastal regions of East Antarctica are examined on the basis of a review of the literature. The principal role in the formation of bottom sediments is played by terrigenous material removed from the source region as a result of the activity of the ice sheet and of outlet glaciers. However, this material is delivered only to a limited extent by calved icebergs, which tend to drift rapidly beyond the marginal seas; most of the sediments are derived as a result of the destructive activity of sea water (abrasion) at the outer edge of the Antarctic ice sheet.

ISSN:0273-8457    

DOI:10.1080/10889378009377147

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

ISSN:0273-8457    

DOI:10.1080/10889378009377148

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

ISSN:0273-8457    

DOI:10.1080/10889378009377142

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor