Earthquake Mechanism and Seismic Waves

Honda, Hirokichi

doi:10.4294/jpe1952.10.2_1

Cited by 85 publications

(23 citation statements)

References 128 publications

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“…The maximum principal stress direction ( cti in Table 1) can be estimated from the azimuths of the axes of maximum pressure (Honda, 1962) for reverse-fault focal mechanisms. The oi estimates for the shallow reverse faults in Figure 16 are 297°, 313°, 316°, and 317°.…”

Section: Northwest-southeast Compressionmentioning

confidence: 99%

Cenozoic tectonic history of the Sierra de Perijá, Venezuela-Colombia, and adjacent basins

Kellogg¹

1984

Geological Society of America Memoirs

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Section: Northwest-southeast Compressionmentioning

confidence: 99%

Cenozoic tectonic history of the Sierra de Perijá, Venezuela-Colombia, and adjacent basins

Kellogg¹

1984

Geological Society of America Memoirs

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“…On the other hand, Honda (1962) from Japan showed convincing evidence that although the observed radiation pattern for P waves agrees with the singlecouple source, that for S waves does not. The observed pattern of S waves required an additional couple orthogonal to the initial one with the moment of identical magnitude but opposite sign.…”

Section: Mathematical Framework For Earthquake Studiesmentioning

confidence: 96%

Impact of earthquake seismology on the geological community since the Benioff zone

Aki¹

1990

Centennial Articles

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For a small segment of a scientific community to make a significant impact on the broader community, the segment needs to gain strength by developing a consensus within itself. Earthquake seismologists reached a consensus about the existence of deep-focus earthquakes about 1930 and accepted the first quantitative measure of earthquake magnitude in the 1940s. Benioff (1949,1954) was able to present this consensus to the geological community by publishing a coherent picture of deep tectonic processes in the Bulletin of the Geological Society of America.The next major impact from earthquake seismology after the Benioff zone came from the final acceptance of Reid's elastic rebound theory in the early 1960s after two controversies were resolved. The mathematical framework for determining the earthquake fault process from observed seismograms was firmly established and has been extensively used in the past two decades. One outcome was the new measure of the size of an earthquake, seismic moment, which directly links geological observations of faults with the seismic ground motions.The latest impact which has begun to be felt by the geological community comes from the consensus about "seismic tomography" which represents the commitment of the seismological community to go beyond the classic one-dimensional earth model to search for a three-dimensional image of Earth's interior.

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“…In seismology methods and approaches often are used, which are reduced to the selection of the physical characteristics of the studied environment or earthquake (Brace, 1978;Clinton et al, 2006;Cohn et al, 1982;Hartzell and Heaton, 1979;Santosa and Symes, 1986;Hanks and and Kanamori, 1979;Honda, 1957Honda, , 1962Scholz et al, 1973). The development of new methods and algorithms for determining source parameters is a relevant and important issue.…”

Section: Inverse Problemmentioning

confidence: 99%

Determining the focal mechanisms of the events in the Carpathian region of Ukraine

Pavlova¹,

Hrytsai²,

Malytskyy³

2014

Geosci. Instrum. Method. Data Syst.

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Abstract. The modification of the matrix method for constructing the displacement field on the free surface of an anisotropic layered medium is presented. The source of seismic waves is modelled by a randomly oriented force and seismic tensor. A trial and error method is presented for solving the inverse problem of determining parameters of the earthquake source. A number of analytical and numerical approaches to determining the earthquake source parameters, based on the direct problem solutions, are proposed. The focal mechanisms for the events in the Carpathian region of Ukraine are determined by the graphical method. The theory of determination of the angles of orientation of the fault plane and the earthquake's focal mechanism are presented. The focal mechanisms obtained by two different methods are compared.

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Earthquake Mechanism and Seismic Waves

Cited by 85 publications

References 128 publications

Cenozoic tectonic history of the Sierra de Perijá, Venezuela-Colombia, and adjacent basins

Cenozoic tectonic history of the Sierra de Perijá, Venezuela-Colombia, and adjacent basins

Impact of earthquake seismology on the geological community since the Benioff zone

Determining the focal mechanisms of the events in the Carpathian region of Ukraine

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