Accession Number : ADA309844

Title :   Seismic Wave Propagation in South America.

Descriptive Note : Final rept. 1 Jul 93-31 Dec 95,

Corporate Author : OBSERVATORIO SAN CALIXTO LA PAZ (BOLIVIA)

Personal Author(s) : Minaya, Estela ; Loa, Jorge ; Vega, Angel ; Drake, Lawrence A.

PDF Url : ADA309844

Report Date : APR 1996

Pagination or Media Count : 31

Abstract : The International Seismic Monitoring System needs the following three refinements: (1) regional adjustments of travel time curves and amplitude distance relations; (2) surface wave detection; and (3) location of small events. We have investigated anomalous structures of Bolivia, Chile and Colombia-Venezuela and established models of seismic wave velocity as%a function of depth; we have modelled the transmission of Love and Rayleigh waves in Bolivia and northern Chile; our station LPAZ of the Global Telemetered Seismic Network, our group of high gain French stations and our files of seismograms since 1913 make La Paz a National Data Center in central South America, authorized by the Bolivian Government. This has been complemented by: (1) participating with several foreign teams of seismologists, installing their equipment in Bolivia; and (2i) revising the history of seismicity of Bolivia and identifying six seismogenic zones, corresponding to the structural complexity.

Descriptors :   *MONITORING, *SEISMIC DATA, FILES(RECORDS), STATIONS, SURFACE WAVES, WAVE PROPAGATION, COMMUNICATIONS NETWORKS, SEISMIC WAVES, SEISMOLOGY, SOUTH AMERICA, TRAVEL TIME, VENEZUELA, TECHNICAL INFORMATION CENTERS, RAYLEIGH WAVES, LOVE WAVES, CHILE, TELEMETER SYSTEMS, GLOBAL COMMUNICATIONS, CENTRAL AMERICA, HIGH GAIN, BOLIVIA.

Subject Categories : Seismology

Distribution Statement : APPROVED FOR PUBLIC RELEASE