Preliminary Results of the First Soviet-American Tsunami Expedition PDF Download
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Author:
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ISBN:
Category : Ocean circulation
Languages : en
Pages : 86
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Author:
Publisher:
ISBN:
Category : Ocean circulation
Languages : en
Pages : 86
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Author: D. J. Frank
Publisher:
ISBN:
Category : Artificial satellites in navigation
Languages : en
Pages : 460
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Author: Junzo Kasahara
Publisher:
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Category : Marine geophysics
Languages : en
Pages : 108
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An ocean bottom seismograph was deployed on the seaward side of the Kuril Trench off Hokkaido, Japan, in 5460 m of water, in August 1975 during the joint Soviet-American Tsunami Expedition. During the seven-day record, S-P times were distributed in three groups: 19-24 sec, corresponding to aftershocks of the 10 June and 13 June 1975 earthquakes southeast of Nemuro, Japan and to earthquakes east of Sanriku, Japan; approximately 30 sec, from south of Erimo Peninsula, Hokkaido; and approximately 100 sec, from the Izu-Bonin Islands. Seven earthquakes, with hypocenters well determined by the land seismic net, are studied in detail. A shallow focus earthquake yields typical oceanic mantle velocities shallower than 50 km in the slab which dips under the Japanese archipelago. However, deeper focus earthquakes reveal anomalously high velocities averaged over the upper 230 km, in agreement with the models of Utsu and Oliver and Isacks. Two deep earthquakes, whose paths lie in the Pacific Ocean asthenosphere, suggest a velocity 3% lower than that predicted by Jeffreys-Bullen, in agreement with the above models. Spectral analysis of S arrivals suggests Q sub s values of 1000-1500 for nearby earthquakes and 4000-6000 for longer-distance earthquakes, implying an unusual attenuation mechanism for long travel paths, which enhances the high frequencies.
Author: Mohammed I. El-Sabh
Publisher: Springer Science & Business Media
ISBN: 9400914334
Category : Science
Languages : en
Pages : 865
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In recent years, several major natural and man-made hazards have challenged scientists, government officials and the public in general: earthquakes, major volcanic and other seismic eruptions in Mount St. Helens, EI Chichon, Mexico city, Nevado del Ruiz, Japan, Italy, Greece, Cameroon and many other places on our globe; Tsunami in the Pacific Ocean and deadly storm surges along the coasts of India, Bangladesh and Japan; Cyclones, floods, thunderstorms, snow storms, tornadoes, drought, desertification and other climatic catastrophes; Amoco-Cadiz oil spill accident (France), Three-Mile Island (U. S. A. ) and Chernobyl (U. S. S. R. ) nuclear accidents, Bhopal chemical accident (India), acid rain (Canada, U. S. A. ) and other technological disasters. Such hazards have snuffed out millions of lives, infli
![Proceedings [of The] Symposium on Tsunamis [held at The] Centro de Investigación Científica Y de Educación Superior de Ensenada, Baja California, Mexico, March 23-26, 1977 PDF](https://books.google.com/books/content/images/frontcover/vdX6aPTNG90C?fife=w80-h100)
Author:
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ISBN:
Category : Tsunamis
Languages : en
Pages : 290
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Book Description
Sections: Seismicity -- Tsunami generation : general features -- Tsunami generation models -- Descriptive tsunamis and statistical studies -- Tsunami generation models -- Tsunami propagation : general equations and solutions relevant for tsunami propagation -- Dispersion and tsunami directivity -- Resonance and run-up -- Numerical models -- Coastal structures and tsunami interaction -- Socioeconomic aspects -- Mid-ocean problems -- Instrumentation and hydraulic experiments.
Author:
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Category : Earth temperature
Languages : en
Pages : 560
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Author: Canada. Marine Sciences Directorate
Publisher:
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Category : Marine resources
Languages : en
Pages : 398
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Author:
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Category : Oceanography
Languages : en
Pages : 472
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Author:
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Category : Geophysics
Languages : en
Pages : 352
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Author: United States. Congress. House. Committee on Energy and Commerce. Special Subcommittee on U.S.-Pacific Rim Trade
Publisher:
ISBN:
Category : Environmental health
Languages : en
Pages : 786
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