Accession Number : ADA293515

Title :   A Regional Crustal Phase Observatory.

Descriptive Note : Final rept. 30 Nov 93-29 Nov 94,

Corporate Author : BOISE STATE UNIV ID DEPT OF GEOSCIENCES

Personal Author(s) : Zollweg, James E.

PDF Url : ADA293515

Report Date : 14 FEB 1995

Pagination or Media Count : 16

Abstract : A ten-element array of short period seismometers and a broadband instrument will be installed in early 1995 at Blue Mountains Observatory (BMO) in northeastern Oregon. BMO operated as a VELA array from 1962 to 1975. It is being reactivated to provide a high-quality data base on regional crustal phase propagation through varying geologic provinces. In particular, BMO data will be used to identify crustal phases useful in determination of event focal depth. Numerous crustal events occur annually at regional distances around BMO, and the depths of many of these events are well-constrained by virtue of occurring within regional telemetered networks. We will use BNO data in assessing how well a small-aperture array performs in discriminating blasts from earthquakes on the basis of focal depth determined from regional phases. This document provides an overview of ENO and its instrumentation, including means of access of the digital data by interested users.

Descriptors :   *EARTH CRUST, *SEISMOMETERS, DATA BASES, DIGITAL SYSTEMS, PROPAGATION, NETWORKS, DEPTH, PHASE, SHORT RANGE(TIME), BROADBAND, INSTRUMENTATION, DISCRIMINATION, EARTHQUAKES, OBSERVATORIES, TELEMETER SYSTEMS, OREGON.

Subject Categories : Seismology

Distribution Statement : APPROVED FOR PUBLIC RELEASE