Accession Number : ADA292546

Title :   Design, Evaluation and Construction of TEXESS and LUXESS, and Research in Mini-Array Technology and Use of Data from Single Stations and Sparse Networks.

Descriptive Note : Technical rept.,

Corporate Author : SOUTHERN METHODIST UNIV DALLAS TX

Personal Author(s) : Herrin, Eugene ; Golden, Paul ; Robertson, Herbert

PDF Url : ADA292546

Report Date : OCT 1994

Pagination or Media Count : 72

Abstract : Objectives of the contract are twofold: (1) to conduct research in seismic mini-array technology & use of data from single stations & sparse networks, and (2) to design, evaluate and construct 2 mini-array, TEXESS (Texas Experimental Seismic System) in s.w. Texas and LUXESS (Luxor Experimental Seismic System), which is n.e. of Luxor, Egypt. These two tasks are dubbed CLIN 1 & CLIN 2. The proposed design was along the lines of a GSE Alpha Station. TEXESS was installed by SMU personnel the week of Aug 22, 1993, & the 1st event was a local, recorded on 31 Aug. With de-installation on hold until diplomatic agreements are in place between the U.S. and Egypt for the installation of LUXESS, work has been directed to CLIN 1 research; array processing, Ms:mb studies, & the AR (3) discrimination method. Research on time-domain processing of array data has resulted in a significant decrease in the standard deviation of azimuths as compared with this statistic obtained using f-k processing. The Ms:mb method is an effective and transportable discriminant for shallow events with mb greater than 4.75. Autoregressive (AR) modeling on Lg data has resulted in the ability to discriminate small economic explosions from small earthquakes.

Descriptors :   *DATA MANAGEMENT, *SEISMIC ARRAYS, *SEISMOLOGICAL STATIONS, ECONOMICS, EGYPT, NETWORKS, PROCESSING, EXPLOSIONS, DISCRIMINATION, EARTHQUAKES, AZIMUTH, TIME DOMAIN, STANDARD DEVIATION, TEXAS, SEISMOLOGY, DISCRIMINATE ANALYSIS, SHALLOW DEPTH.

Subject Categories : Seismology

Distribution Statement : APPROVED FOR PUBLIC RELEASE