Results 241 to 250 of about 180,931 (300)
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Offshore Technology Conference, 1969
PREFACE This paper is a condensation of a talk presented at the 38th Annual Meeting of the Society of Exploration Geophysicists held in Denver, Colorado, September 29-0ctober 3, 1968. The complete paper is published in handbook form, available from United Geophysical Corporation, Pasadena, California.
F.S. Kramer, R.A. Peterson, W.C. Walter
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PREFACE This paper is a condensation of a talk presented at the 38th Annual Meeting of the Society of Exploration Geophysicists held in Denver, Colorado, September 29-0ctober 3, 1968. The complete paper is published in handbook form, available from United Geophysical Corporation, Pasadena, California.
F.S. Kramer, R.A. Peterson, W.C. Walter
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Studia Geophysica et Geodaetica, 1961
В предлагаемой работе онисывается прибор для записи значения квадрата скорости колебаний земной поверхности в точке наблюдения при землетрясении. Запись значения квадрата колебательной скорости может быть легко проинтегрирована для получения величины, пропорциональной энергии сейсмическнх волн в точке наблюдения. Описанным в работе прибором произведены
V. L. Belotelov +3 more
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В предлагаемой работе онисывается прибор для записи значения квадрата скорости колебаний земной поверхности в точке наблюдения при землетрясении. Запись значения квадрата колебательной скорости может быть легко проинтегрирована для получения величины, пропорциональной энергии сейсмическнх волн в точке наблюдения. Описанным в работе прибором произведены
V. L. Belotelov +3 more
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Broadband seismic energy source
The Journal of the Acoustical Society of America, 1981A vibratory seismic energy source capable of generating significant energy over a broad frequency band. The vibrating baseplate and associated structure are designed to have minimum weight while still retaining sufficient structural integrity to permit the use of high actuator forces.
Richard M. Weber, John W. Bedenbender
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Energy based seismic design coefficients
AIP Conference Proceedings, 2021Seismic Design Factors (SDF) are important parameters in current building codes to estimate the strength and deformation of the seismic force-resisting system. The current building code uses the SDF to economically design a building and achieve the basic life safety performance objective of a building.
Trung Thanh Tran, B. Adhikari
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The Journal of the Acoustical Society of America, 1979
A seismic energy source which incorporates multiple augers and a rotary mechanism therefor mounted on a vehicle, the auger incorporating an internally situated seismic shock wave source which creates shock waves passing through a window in the auger into the soil.
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A seismic energy source which incorporates multiple augers and a rotary mechanism therefor mounted on a vehicle, the auger incorporating an internally situated seismic shock wave source which creates shock waves passing through a window in the auger into the soil.
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The Journal of the Acoustical Society of America, 1988
A hydraulically controlled seismic energy source for impressing individual seismic energy pulses into the ground, wherein the hydraulic pressure forcing the ram downwardly is substantially reduced slightly before the ram contacts the ground, and a continual upward hydraulic force is applied to a downwardly facing surface of the ram, whereby the ram is ...
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A hydraulically controlled seismic energy source for impressing individual seismic energy pulses into the ground, wherein the hydraulic pressure forcing the ram downwardly is substantially reduced slightly before the ram contacts the ground, and a continual upward hydraulic force is applied to a downwardly facing surface of the ram, whereby the ram is ...
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Science, 2017
Energy loss varies with frequency in the lithosphere but not in the ...
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Energy loss varies with frequency in the lithosphere but not in the ...
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MULTIPLE REFLECTIONS OF SEISMIC ENERGY
GEOPHYSICS, 1948This paper is a report of observations of multiple reflections in seismograph work in Argentina, of successful methods of identifying them, and of unsuccessful attempts to eliminate them. The paper begins with generalizations regarding the expectancy of multiples and develops geometrically (using straight‐line paths) the relation between multiples and
Raul F. Hansen, Curtis H. Johnson
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