The moho depth variations under the LASA and their effect on dT/dΔ measurements
- 1 February 1969
- journal article
- Published by Seismological Society of America (SSA) in Bulletin of the Seismological Society of America
- Vol. 59 (1) , 409-420
- https://doi.org/10.1785/bssa0590010409
Abstract
The LASA array in Montana was used to measure the slope of the travel-time curve (dT/dΔ) for events with epicenters to the northwest and southeast. Lateral inhomogeneities under the array introduce large relative arrival time errors (station residuals). A model for the crust under LASA is proposed which can explain the station residuals. This crustal model accounts for the major differences between the measured and Jeffreys-Bullen (J-B) dT/dΔ values. The model was used to correct the measured dT/dΔ profiles for the crustal effect.Keywords
This publication has 8 references indexed in Scilit:
- Array measurements ofPvelocities in the upper mantleJournal of Geophysical Research, 1967
- VALUES OF LASA TIME STATION RESIDUALS, VELOCITY AND AZIMUTH ERRORSPublished by Defense Technical Information Center (DTIC) ,1967
- TRAVEL - TIME ANOMALIES AT LASAPublished by Defense Technical Information Center (DTIC) ,1967
- Corrections to apparent azimuths and travel-time gradients for a dipping Mohorovičić discontinuityBulletin of the Seismological Society of America, 1966
- Azimuth and slowness anomalies of seismic waves measured on the central California seismographic array. Part I. ObservationsBulletin of the Seismological Society of America, 1966
- Inferences on crustal velocities and densities fromPwave delays and gravity anomaliesJournal of Geophysical Research, 1964
- The velocity of compressional waves in rocks to 10 kilobars: 2.Journal of Geophysical Research, 1961
- A crustal section across the Puerto Rico trenchJournal of Geophysical Research, 1959