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1. |
Long‐term seismicity of North Armenia |
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Eos, Transactions American Geophysical Union,
Volume 70,
Issue 10,
1989,
Page 145-154
N. N. Ambraseys,
R. D. Adams,
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摘要:
The earthquake of December 7, 1988, in the Soviet Socialist Republic of Armenia occurred at 0741:25 UT or about 11:41 A.M. local time, with the worst effects in the region between Leninakan and Kirovakan, where there was great destruction and loss of life. The preliminary focus calculated by the National Earthquake Information Center of the U.S. Geological Survey, Golden, Colo., is 41.00°N, 44.20°E, constrained to a focal depth of 10 km. This position is about 38 km northeast of Leninakan and 18 km north northwest of the town of Spitak. The first reported Soviet determination put the preliminary epicenter midway between Leninakan and Spitak about 18 km from each [Markov, 1988
ISSN:0002-8606
DOI:10.1029/89EO00080
年代:1989
数据来源: WILEY
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2. |
Elemental cycling and fluxes off southern California |
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Eos, Transactions American Geophysical Union,
Volume 70,
Issue 10,
1989,
Page 146-155
George A. Jackson,
Farooq Azam,
Angelo F. Carlucci,
Richard W. Eppley,
Peter M. Williams,
Bruce Finney,
Huh Chih‐An,
Lawrence F. Small,
Donn S. Gorsline,
Barbara Hickey,
Richard A. Jahnke,
Issac R. Kaplan,
M. I. Venkatesan,
Michael R. Landry,
Kai M. Wong,
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摘要:
California Basin Study (CaBS) is a multi‐institutional, multidisciplinary project funded by the Ecological Sciences Division of the U.S. Department of Energy to study processes that control cycling and vertical transport of energy‐related materials off the southern California coast. This region is heavily used for such human activities as oil drilling and transport, shipping, electricity generation by nuclear and fossil fuel plants, and disposal of municipal sewage. CaBS emphasis has been on particle transport and transformation and has focused on the Santa Monica and San Pedro basins, immediately offshore of Los Angeles. Earlier work in the Southern California area has been summarized byEppley[19
ISSN:0002-8606
DOI:10.1029/89EO00082
年代:1989
数据来源: WILEY
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3. |
Applied Hydrology, McGraw‐Hill Series in Water Resources and Environmental Engineering |
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Eos, Transactions American Geophysical Union,
Volume 70,
Issue 10,
1989,
Page 149-149
Graham A. Tobin,
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摘要:
Applied Hydrologyis a valuable contribution to the literature. It is clearly written and meets all goals described by the authors. The book is intended as an upper level undergraduate or graduate level text but will also serve well as a reference handbook for applied hydrologists.The book is divided into three parts. The first, on hydrological processes, comprises six chapters which examine different elements of the hydrologic system. For the most part, these chapters are descriptive, providing background information and outlining basic principles pertinent to hydrology. Topics range from atmospheric processes to surface and subsurface flows. Finally, hydrologic measurement is discussed in chapter six.
ISSN:0002-8606
DOI:10.1029/89EO00083
年代:1989
数据来源: WILEY
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4. |
Sea level/ODP workshop |
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Eos, Transactions American Geophysical Union,
Volume 70,
Issue 10,
1989,
Page 155-156
Gregory Mountain,
Joel Watkins,
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摘要:
Sixty‐six scientists from academia, government, and industry met recently for a 3‐day Joint Oceanographic Institutions/U.S. Science Advisory Committee workshop in El Paso, Tex. Their purpose was to consolidate strategies for the study of sea level change within the Ocean Drilling Program. A document summarizing their findings will be available this spring from JOI, Inc., while the following is a report outlining preliminary workshop conclusions.Three facts provided the incentive to convene this workshop: an international array of marine scientists [COSOD II, 1987] determined that a major goal of ocean drilling in the next decade should be to improve understanding of the timing, magnitude, and causal mechanisms of sea level change; the complexity of deriving a eustatic signal from the rock record underscores the importance o f a carefully organized approach; and acquiring adequate survey data and developing critically important technologies requires a lead time of several years ahead of ODP drill
ISSN:0002-8606
DOI:10.1029/89EO00084
年代:1989
数据来源: WILEY
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5. |
Downhole seismometers in the deep ocean |
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Eos, Transactions American Geophysical Union,
Volume 70,
Issue 10,
1989,
Page 156-156
G. M. Purdy,
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摘要:
The advances made using data from the sparse land‐based digital seismic networks operating since the mid‐1970s have been spectacular. There are now tomographic maps of the Earth's interior, reaching from the lithosphere to the inner core of the Earth. A clear potential has been demonstrated for the mapping of temperature anomalies and flow in the mantle by the determination of velocity anomalies and changes in azimuthal or polarization anisotropy. The first maps of the topography of the core mantle boundary were published last year. However, the resolution of these studies and the uniqueness of their results is limited by the lack of adequate spatial sampling of the seismic wave field over the entire gl
ISSN:0002-8606
DOI:10.1029/89EO00085
年代:1989
数据来源: WILEY
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