Accession Number:

ADA003710

Title:

Deep Borehole Strainmeter to Measure Earth Strain

Descriptive Note:

Final scientific rept. 15 Jun 1970-30 Sep 1974

Corporate Author:

DEVELCO INC MOUNTAIN VIEW CA

Report Date:

1974-09-30

Pagination or Media Count:

110.0

Abstract:

A highly sensitive multicomponent strainmeter was designed for use in deep boreholes. A shallow-hole version of the deep-hole strainmeter was constructed and tested by operating it in a mine tunnel near the seismically active area around Mina, Nevada. The ability of the strainmeter to record tidal strains of approximately 1 x 10 to the minus 8th power in the horizontal direction and approximately 1 x 10 to the minus 9th power in the vertical direction was demonstrated.

Subject Categories:

  • Seismology
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE