Accession Number:

AD0656688

Title:

LARGE APERTURE SEISMIC TELEMETERING SYSTEM FOR CENTRAL ALASKA

Descriptive Note:

Scientific rept.

Corporate Author:

ALASKA UNIV FAIRBANKS GEOPHYSICAL INST

Personal Author(s):

• Berg, Eduard
• Sperlich, Norbert
• Feetham, William

Report Date:

1967-05-01

Pagination or Media Count:

50.0

Abstract:

The Geophysical Institute has established and now operates a large aperture seismic telemeter network in Alaska. At present four stations are operated and two more will be added shortly. The system is described in its technical details, including the remote site equipment and the method of recording at the Geophysical Institute. Without the use of methods for improving signal-to-noise ratio such as velocity andor frequency filtering the sensitivity of the seismic stations for detecting distant earthquakes is similar to that of the U.S.C. G.S. College Observatory. This sensitivity allows recording of earthquakes down to magnitude 4 U.S.C. G.S. magnitude in the 80 degree distant range. Epicenter maps for three 1-month periods for interior and coastal Alaska are presented. The installation of the Black Rapids station BLR has been completed.

Descriptors:

• *ALASKA
• *SEISMOLOGICAL STATIONS
• *TELEMETER SYSTEMS
• DETECTION
• EARTHQUAKE WARNING SYSTEMS
• EARTHQUAKES
• SEISMIC WAVES
• SEISMOMETERS
• SITE SELECTION

Subject Categories:

• Seismology
• Telemetry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE