Periodic Heat Flow in a Stratified Medium, with Application to Permafrost Problems PDF Download
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Author: Arthur H. Lachenbruch
Publisher:
ISBN:
Category : Earth temperature
Languages : en
Pages : 288
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Book Description
A discussion of temperature fluctuiations in a stratified medium caused by a periodically varying surface temperature with special reference to the effects of seasonal temperature variation on gravel fills, the natural active layer and permafrost.
Author: Arthur H. Lachenbruch
Publisher:
ISBN:
Category : Earth temperature
Languages : en
Pages : 288
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Book Description
A discussion of temperature fluctuiations in a stratified medium caused by a periodically varying surface temperature with special reference to the effects of seasonal temperature variation on gravel fills, the natural active layer and permafrost.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 464
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Book Description
Author: Edward Huntington Cobb
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 424
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Book Description
![Permafrost: North American Contribution [to The] Second International Conference PDF](https://books.google.com/books/content/images/frontcover/M4SvF9Qax7EC?fife=w80-h100)
Author:
Publisher: National Academies
ISBN: 9780309021159
Category : Frozen ground
Languages : en
Pages : 808
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Author: Arctic Institute of North America
Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 1504
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Author:
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 462
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Book Description
Author: Richard E. Church
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 102
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Book Description
Large-scale patterned ground in the Donnelly Dome area of central Alaska consists of polygons 25 to 46 m in diameter bounded by shallow troughs 1 to 2 m wide that form the sides of the polygons. The troughs are underlain by wedge-shaped masses of sediments that extend downward 2 to 3 m. Texture of the sediments of the wedges is distinct from that of the poorly stratified glacial outwash gravel that the wedges transect. Sediments of the wedge vary texturally along the strike and vertically within a given wedge. The coarsest material in the wedge is about 75 mm in diameter, which is the same size as the coarsest material in the outwash. The fine material in the wedges is silt, the same as that which blankets the area. The patterned ground of the Donnelly Dome area originated during Wisconsin time when the mean annual air temperature was at least 3C colder than now. Wigh the warming of the climate in post-Wisconsin time most of the perennially frozen gravel thawed and the ice wedges melted. The voids created by the melting of the ice wedges were filled with sediment that was washed from the surface or collapsed from the thawed sides of the voids. The troughs bounding the polygons are now, however, no longer underlain with ice wedges but with ice wedge pseudomorphs (fossil ice wedges). (Author).
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1714
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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 940
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1024
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Book Description
