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1. |
Planet Earth: Part III: Biosphere interactions |
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Eos, Transactions American Geophysical Union,
Volume 71,
Issue 52,
1990,
Page 1883-1884
Piers Sellers,
James J. McCarthy,
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摘要:
The qualitative aspects of the interactions between the Earth's biosphere and the physical and chemical components of the global climate system have been understood for some time, but only recently has coordinated study focused on the quantitative nature of these relationships. This study is motivated mainly by concern about our current inability to predict the possible consequences of global change.The main interactions between the biosphere and climate range from biophysically controlled exchanges of radiation, heat, matter (both CO2and H2O), and momentum, down to longer time‐scale exchanges of chemical constituents that ultimately determine the composition and chemical stability of the Earth's atmosphere and oceans. Ranked in order of increasing time scale (and increasing difficulty of interpretation), these interactions are energy and water cycles, the carbon cycle, nutrients and atmospheric chemistry, and the joint physical and chemical evolution of the atmosphere and the biospher
ISSN:0002-8606
DOI:10.1029/90EO00383
年代:1990
数据来源: WILEY
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2. |
The impact of man |
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Eos, Transactions American Geophysical Union,
Volume 71,
Issue 52,
1990,
Page 1884-1886
M. Gordon Wolman,
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摘要:
There is no doubt that mankind is now altering the Earth significantly and that no part of the global system is immune. The envelope of air surrounding the globe, the oceans—which cover about 70% of the surface—the land surface, the subsurface, and the biosphere all feel the impact of man. Also, it is true that however brief the period of time that human beings have lived on Earth, and long before the present, they have altered the land and water in important ways. All energy used by mankind, the number of people on Earth, and the combination of the two, which stresses the global system far beyond anything experienced heretofore makes the 20th century different than previous ti
ISSN:0002-8606
DOI:10.1029/EO071i052p01884
年代:1990
数据来源: WILEY
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3. |
Clay Mineral Society Meeting |
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Eos, Transactions American Geophysical Union,
Volume 71,
Issue 52,
1990,
Page 1886-1886
Dewey Moore,
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PDF (182KB)
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摘要:
Walter Keller had a birthday party. And 300 clay mineralogists came to help him celebrate his 90th birthday. They stayed for the 27th annual meeting of the Clay Mineral Society, October 6–11, hosted by the Department of Geological Sciences, University of Missouri‐Columbia. A short course, “Neutron Scattering Technology for Clay Mineral Investigation,” preceded the technical session.The three important points that came out of the technical session were that inelastic scattering of neutrons yields information about the character and orientation of organic and water molecules in the interlayer space; that small‐angle neutron scattering (SANS) gives information on the level of aggregation of clay‐sized particles; and that Rictveld techniques are not yet applicable to deciphering clay mineral
ISSN:0002-8606
DOI:10.1029/90EO00385
年代:1990
数据来源: WILEY
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