Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Permafrost Tunnel Camp Tuto Greenland
Download Permafrost Tunnel Camp Tuto Greenland full books in PDF, epub, and Kindle. Read online Permafrost Tunnel Camp Tuto Greenland ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Permafrost Tunnel, Camp TUTO, Greenland by : John F. Abel
Download or read book Permafrost Tunnel, Camp TUTO, Greenland written by John F. Abel and published by . This book was released on 1960 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental tunnel, 300 x 9 ft. was driven into a glacial till hillside near Camp TUTO during the summer of 1959 for the purposes of determining the feasibility of excavating subsurface openings in frozen glacial till, developing efficient methods for excavating this material, and determining the characteristics of the glacial till at depth. Excavation of frozen glacial till by conventional hard-rock mining methods, modified slightly to allow for low temperatures, was found to be feasible. The employment, effectiveness, and possible improvement of the mining methods and equipment are discussed and problems for future study are suggested.
Book Synopsis Tunneling in Permafrost, II by : George K. Swinzow
Download or read book Tunneling in Permafrost, II written by George K. Swinzow and published by . This book was released on 1964 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 1960 field season, the permafrost tunnel, begun in 1959 in the Tuto area in Greenland, was extended to 605 ft and three rooms were excavated off the main drift. Mining methods and equipment are described and evaluated. The action of explosives on permafrost was investigated and various types of powder are evaluated. The use of advantages provided by the cold environment was demonstrated. A new building material permacrete, was successfully used and its application demonstrated. The glaciology of the region is re-examined in the light of evidence revealed by excavation. It is concluded that permafrost provides a safe underground shelter and that permacrete presents a most suitable material for fortification. (Author).
Book Synopsis The 50-man Winter Camp at Tuto, Greenland by : Linwood E. Lufkin
Download or read book The 50-man Winter Camp at Tuto, Greenland written by Linwood E. Lufkin and published by . This book was released on 1969 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1965 a U.S. Army research camp was constructed near Thule, Greenland. Research needs, site conditions and available equipment strongly influenced design and construction. Data collected from other facilities in Greenland were used to establish space, utility and power requirements. Orienting structures to minimize snow drifting, elevating floors to prevent degradation of permafrost, and protection of utility lines from freezing were given particular attention. Timber spread footings resting on non-frost-susceptible fill were used to support two rows of wooden T-5 Arctic buildings, interconnected by a corrugated steel passageway. Water was piped 4470 ft from a glacial lake and waste water discharged into a lagoon downwind of the facility. Excavation of permafrost with a routing tooth was the major construction problem. The extra effort expended to consider the special problems of the Arctic site was fully justified: snow drifting and utility problems were minimal and the overall performance of the facility exceeded that of several previously constructed camps. (Author).
Book Synopsis Permafrost Tunneling by a Continuous Mechanical Method by : George K. Swinzow
Download or read book Permafrost Tunneling by a Continuous Mechanical Method written by George K. Swinzow and published by . This book was released on 1970 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A mechanical method of tunneling in permafrost was investigated by excavating the Alaska Experimental Permafrost Tunnel in a perennially frozen stratum of Fairbanks silt at the edge of a gold dredge field 11 miles north of Fairbanks. The tunnel is 360 ft long and about 7 x 13 ft in cross section. It was cut by the Alkirk continuous cyclic mining method. Certain properties of the frozen silt were investigated and the tunnel was evaluated as a shelter for military purposes. Temperatures, mechanical compositions and moisture contents are discussed and observations on plastic deformation are given. The machine uses a pilot-pull principle to provide face pressure. Its potential performance was evaluated. Special observations of cutting strain and power consumption were performed and the cutting process was analyzed. It was found that the mechanical process is expedient and that with modifications the Alkirk principle promises to become a feasible method of excavating deep shelters in permafrost. Subsurface shelters in permafrost provide advantageous protection against high velocity shocks. The operations' efficiency is analyzed in the appendix.
Book Synopsis When the Ice Is Gone: What a Greenland Ice Core Reveals About Earth's Tumultuous History and Perilous Future by : Paul Bierman
Download or read book When the Ice Is Gone: What a Greenland Ice Core Reveals About Earth's Tumultuous History and Perilous Future written by Paul Bierman and published by W. W. Norton & Company. This book was released on 2024-08-20 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paul Bierman’s realization that Greenland’s ice sheet melted when Earth was no warmer than today sounds an alarm for our planet. In 2018, lumps of frozen soil, collected from the bottom of the world’s first deep ice core and lost for decades, reappeared in Denmark. When geologist Paul Bierman and his team first melted a piece of this unique material, they were shocked to find perfectly preserved leaves, twigs, and moss. That observation led them to a startling discovery: Greenland’s ice sheet had melted naturally before, about 400,000 years ago. The remote island’s ice was far more fragile than scientists had realized—unstable even without human interference. In When the Ice Is Gone, Bierman traces the story of this extraordinary finding, revealing how it radically changes our understanding of the Earth and its climate. A longtime researcher in Greenland, he begins with a brief history of the island, both human and geological, explaining how over the last century scientists have learned to read the historical record in ice, deciphering when volcanoes exploded and humans started driving cars fueled by leaded gasoline. For the origins of ice coring, Bierman brings us to Camp Century, a U.S. military base built inside Greenland’s ice sheet, where engineers first drilled through mile-thick ice and into the frozen soil beneath. Decades later, a few feet of that long-frozen earth would reveal its secrets—ancient warmth and melted ice. Changes in Greenland reverberate around the world, with ice melting high in the arctic affecting people everywhere. Bierman explores how losing Greenland’s ice will catalyze devastating events if we don’t change course and address climate change now.
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1969 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of North American Geology by :
Download or read book Bibliography of North American Geology written by and published by . This book was released on 1964 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.
Book Synopsis Bulletin of the United States Antarctic Projects Office by :
Download or read book Bulletin of the United States Antarctic Projects Office written by and published by . This book was released on 1960 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamental Concepts for the Rapid Disengagement of Frozen Soil by : Foster-Miller Associates
Download or read book Fundamental Concepts for the Rapid Disengagement of Frozen Soil written by Foster-Miller Associates and published by . This book was released on 1973 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of Reports Resulting from U.S. Geological Survey Participation in the United States Technical Assistance Program, 1940-65 by : Jo Ann Heath
Download or read book Bibliography of Reports Resulting from U.S. Geological Survey Participation in the United States Technical Assistance Program, 1940-65 written by Jo Ann Heath and published by . This book was released on 1965 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepared under the auspies of the Agency for International Development of the U.S. Dept. of State.
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1961 with total page 1878 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government-wide Index to Federal Research & Development Reports by :
Download or read book Government-wide Index to Federal Research & Development Reports written by and published by . This book was released on 1967-05 with total page 1470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Abstract Bulletin by : Defense Documentation Center (U.S.)
Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis USA CRREL Technical Publications by : Cold Regions Research and Engineering Laboratory (U.S.)
Download or read book USA CRREL Technical Publications written by Cold Regions Research and Engineering Laboratory (U.S.) and published by . This book was released on 1972 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Permafrost International Conference by : Kenneth B. Woods
Download or read book Permafrost International Conference written by Kenneth B. Woods and published by National Academies. This book was released on 1966 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CRREL Technical Publications, 1950-1975 by : Cold Regions Research and Engineering Laboratory (U.S.)
Download or read book CRREL Technical Publications, 1950-1975 written by Cold Regions Research and Engineering Laboratory (U.S.) and published by . This book was released on 1992 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ... International Conference on Permafrost by :
Download or read book Proceedings of the ... International Conference on Permafrost written by and published by . This book was released on 1978 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
