Attenuation in the western Great Basin. Annual technical report, 1 October 1983-30 September 1984

Technical Report · Fri Feb 15 00:00:00 EST 1985

OSTI ID:6006158

Priestly, K

Teleseismic P-wave residuals reveal that beneath the FAULTLESS shot point there is a much smaller high speed anomaly than the observed beneath Pahute Mesa. Ray tracing through the proposed mantle structures in each area result in a shadow zone for European stations for Pahute Mesa shots and little to no effect on energy from FAULTLESS. This suggests that magnitude versus yield curves based on Pahute Mesa explosions are biased, and that the FAULTLESS magnitude versus yield anomaly is a consequence of using those curves. Low frequency estimates of seismic moment of Mammoth Lakes, CA events based on regional surface wave recordings are similar to those using local body wave recordings of the same events. The lack of peaked spectra eliminates one of the proposed dike injection mechanisms. The spectra show no features that suggest mechanisms different from those of tectonic earthquakes. Mammoth Lakes earthquakes discriminate from Nevada Test Site explosions when comparing m sub b and M sub s. Observations of peak Wood-Anderson response along travel paths in the Great Basin indicate greater attenuation at regional distances than in southern California by abut 0.3 M sub L units. Near source M sub L estimates are higher that predicted by Richter's attenuation curve, probably due to the poor near source constraint on the curve.

• Research Organization: Mackay School of Mines, Reno, NV (USA). Seismological Lab.
• OSTI ID: 6006158
• Report Number(s): AD-A-227790/3/XAB; CNN: F49620-83-C-0012; ARPA Order-4397
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
FAULTLESS EVENT
YIELDS
GREAT BASIN
SEISMIC WAVES
NUCLEAR EXPLOSIONS
ATTENUATION
CALIFORNIA
DISTANCE
EARTH CRUST
EARTH MANTLE
EARTHQUAKES
GEOLOGY
NEVADA
PROGRESS REPORT
SEISMIC SURFACE WAVES
TEST FACILITIES
UNDERGROUND EXPLOSIONS
VELOCITY
CROSSTIE OPERATION
DOCUMENT TYPES
EXPLOSIONS
FEDERAL REGION IX
NORTH AMERICA
SEISMIC EVENTS
USA
450200* - Military Technology
Weaponry
& National Defense- Nuclear Explosions & Explosives