Waveform analysis of aftershocks of the June 29, 1992 Little Skull Mountain, Nevada, earthquake
- Univ. of Nevada, Reno, NV (United States)
Following the 29 June 1992 magnitude 5.6 Little Skull Mountain, Nevada, earthquake, twelve portable three-component digital seismometers were deployed in the region surrounding Little Skull Mountain and Yucca Mountain by researchers at the University of Nevada, Reno, Seismological Laboratory. These stations complemented the 55 permanent analog stations of the Southern Great Basin Seismic Network, and portable deployments of the United States Geological Survey (USGS), Golden, Colorado, and Lawrence Livermore National Laboratory, Livermore, California. The mainshock of the Little Skull Mountain earthquake occurred approximately 20 km southeast of the site at Yucca Mountain, Nevada, that is being characterized as a potential repository for high-level nuclear waste. The pattern of Little Skull Mountain aftershocks defines an L' shape at the southern boundary of the Nevada Test Site. The authors use a full waveform inversion method to study source properties of aftershocks in the epicentral area recorded on the digital stations. They compute the synthetic seismograms in a layered elastic media using the generalized reflection and transmission coefficient technique. The authors future plans include automation of these techniques for use in routine monitoring of seismic activity in the region. Parameters obtained in this study include focal mechanism, stress drop, rupture duration, and seismic moment. These results will allow them to place constraints on the geometry and style of subsurface faulting in the region and aid in the assessment of seismic hazard in the vicinity of Yucca Mountain.
- OSTI ID:
- 5095629
- Report Number(s):
- CONF-9305259-; CODEN: GAAPBC
- Journal Information:
- Geological Society of America, Abstracts with Programs; (United States), Vol. 25:5; Conference: 89. annual meeting of the Cordilleran Section and the 46th annual meeting of the Rocky Mountain Section of the Geological Society of America (GSA), Reno, NV (United States), 19-21 May 1993; ISSN 0016-7592
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
54 ENVIRONMENTAL SCIENCES
EARTHQUAKES
MONITORING
NEVADA
RADIOACTIVE WASTE FACILITIES
RISK ASSESSMENT
SITE CHARACTERIZATION
AFTERSHOCKS
DATA ANALYSIS
GEOLOGIC FAULTS
SEISMIC DETECTORS
SEISMIC EFFECTS
SEISMIC WAVES
SEISMICITY
WAVE FORMS
WAVE PROPAGATION
YUCCA MOUNTAIN
DEVELOPED COUNTRIES
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
MEASURING INSTRUMENTS
MOUNTAINS
NORTH AMERICA
NUCLEAR FACILITIES
SEISMIC ARRAYS
SEISMIC EVENTS
USA
580000* - Geosciences
052002 - Nuclear Fuels- Waste Disposal & Storage
540250 - Environment
Terrestrial- Site Resource & Use Studies- (1990-)