Preliminary analysis of digital seismograms from the Mammoth Lakes, California, earthquake sequence of May-June 1980

Mueller, C.S.; Spudich, Paul; Cranswick, Edward; Archuleta, Ralph J.

doi:10.3133/ofr81155

Cited by 10 publications

(3 citation statements)

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“…Interpretation of the Mammoth Lakes earthquakes of 1980 May and June has been the subject of controversy (e.g. Mueller et al 1981;Archuleta ef al. 1982;Given, Wallace & Kanomori 1982;Barker & Langston 1983;Ekstrom 1983;Julian 1983;Ghavez & Priestley 1985;Ekstrom & Dziewosnki 1985;Priestley, Brune & Anderson 1985;Lide & Ryall 1985;Wallace 1985;Chouet & Julian 1985;Julian & Sipkin 1985;Sipkin 1986a).…”

Section: Earthquake Focal Mechanismsmentioning

confidence: 99%

Strong ground motion in normal-faulting earthquakes

Westaway¹,

Smith²

1989

Geophysical Journal International

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We investigate the character of strong ground motion in normal-faulting earthquakes from the western USA, Italy, Greece, Turkey and New Zealand, with magnitudes from 4 to 7.5.In all cases where seismic phases can be identified, peak horizontal ground acceleration occurs in the direct S-phase. Crustal anelasticity for S-waves, which varies locally, is shown for events above magnitude 5 at distances of tens of km to be relatively unimportant in comparison with geometrical spreading in determining the variation of peak horizontal ground acceleration with source-station distance. This permits us to treat our set of records, regardless of source region, as a single worldwide data set. For events between magnitudes 4 and 5, peak horizontal ground acceleration appears not to be controlled by geometrical spreading. At source-station distances greater than about 10 km, it decreases approximately in inverse proportion to distance squared.Earthquakes with magnitudes greater than 5 cause ground acceleration equivalent to that in reverse-faulting and strike-slip events. This result contradicts the widely held view that normal-faulting earthquakes generate systematically smaller ground accelerations than other events. It implies that the orientation of the crustal stress-field, which will be very different in extensional regions from other regions, has little effect on the amplitude of high-frequency seismic waves generated by earthquakes.

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Section: Earthquake Focal Mechanismsmentioning

confidence: 99%

Strong ground motion in normal-faulting earthquakes

Westaway¹,

Smith²

1989

Geophysical Journal International

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“…1). These traveltime errors were assumed to be much less than those resulting from the location errors given by Mueller et al (1981). The hypocentre locations ), Archuleta et al 's results (1982), and moment and source duration from moment tensor solutions (this study) are listed in Table 1.…”

Section: Station a N D Hypocentre Distributionmentioning

confidence: 98%

“…The distances from the epicentres were in the range of 1-30 km. Because of the small location uncertainties of 1-2 km, the hypocentre data, station ranges, and azimuths were taken from Mueller et al (1981). They used a simple 1-D-model, which is comparable in terms of traveltimes to the velocity model chosen for this study (Fig.…”

Section: Station a N D Hypocentre Distributionmentioning

confidence: 99%

Moment tensor inversion of local earthquake data-II. Application to aftershocks of the May 1980 Mammoth Lakes earthquakes

Köch

1991

Geophysical Journal International

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S U M M A R Y Near-source data were collected by the USGS from the Mammoth Lakes earthquakes aftershock sequence in May/June 1980. This data set was used to perform moment tensor inversions for events where recordings existed at more than 10 stations. Since l-D reflectivity modelling was used for calculating the appropriate Green's functions, the 10 station constraint was imposed to try to minimize the influence of complex structure in the vicinity of Long Valley caldera. Due to these constraints only relatively strong events in the magnitude range 3.5 5 ML 5 4.5 were studied.The moment tensors from the inversions indicate that in almost all cases only the m2 or ( M I J component was significantly excited. This type of moment tensor corresponds to a pure vertical strike-slip mechanism striking north with left-lateral movement. This result is in good agreement with results by Lide & Ryall (1985), who found hypocentre lineations for the aftershocks on N-S extending zones. They are also similar to the mechanisms initially proposed for the four ML = 6 mainshocks by other investigators as well as consistent with the composite fault plane solution of Archuleta et al. (1982) and cannot be interpreted in terms of a CLVD mechanism for dike injection.

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Deformation of Long Valley Caldera, Mono County, California, from 1975 to 1982

Denlinger

Riley

1984

Collected Reprint Series

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Preliminary analysis of digital seismograms from the Mammoth Lakes, California, earthquake sequence of May-June 1980

Cited by 10 publications

References 0 publications

Strong ground motion in normal-faulting earthquakes

Strong ground motion in normal-faulting earthquakes

Moment tensor inversion of local earthquake data-II. Application to aftershocks of the May 1980 Mammoth Lakes earthquakes

Deformation of Long Valley Caldera, Mono County, California, from 1975 to 1982

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