Accession Number:

AD0701761

Title:

A SELECTED EVENTS RECORDER FOR SEISMIC APPLICATIONS.

Descriptive Note:

Technical rept.,

Corporate Author:

NEVADA UNIV RENO MACKAY SCHOOL OF MINES

Personal Author(s):

• Hunt,Dan P.

Report Date:

1969-11-01

Pagination or Media Count:

152.0

Abstract:

The document describes a developmental, suitcase-size portable seismic recording station specifically tailored to micro-earthquake investigation. The total instrument package, including recorder, 24-hour battery pack, radio antenna, seismometer, and field wire weighs less than 100 pounds and can be hand-carried by two people into remote areas not accessible by other means. The recorder portion of the station is a two-channel, low speed, instrumentation-type magnetic tape recorder which was developed for this particular application. This recorder has the unique capability to edit incoming data and record only those signals that exceed a preset amplitude threshold while retaining the low-level preamble to the recorded event. A time signal derived from a National Bureau of Standards WWVB broadcast is recorded with the data to provide accurate event-time correlation. Author

Descriptors:

• (*SEISMOLOGICAL STATIONS
• DESIGN)
• (*MICROSEISMS
• DETECTION)
• SEISMOMETERS
• RECORDING SYSTEMS
• SIGNAL TO NOISE RATIO
• MAGNETIC TAPE
• PORTABLE EQUIPMENT
• COSTS
• SENSITIVITY
• THESES

Subject Categories:

• Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE