Accession Number:

AD0609097

Title:

EARTH-MOTION MEASUREMENTS.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s):

Report Date:

1964-11-20

Pagination or Media Count:

71.0

Abstract:

The objective of Danny Boy Project 1.2 was to measure ground motion resulting from an underground nuclear detonation in basalt. This report presents and analyzes the measurements obtained from 31 vertically and horizontally oriented accelerometers and 3 vertically oriented velocity meters. The accelerometers and velocity meters were placed in the region extending horizontally from 3 to 610 meters from Surface Zero SZ. All were placed near the surface i.e. at depths of about 13 meter except the accelerometer at the 3-meter station which was buried 18.3 meters deep. Peak acceleration values were considerably less than anticipated. Because of low amplifier gain settings used in anticipation of higher signal levels, usable records were obtained on only 22 channels. However, because of the low acceleration levels, close-in measurements i.e. close to SZ, which were of primary interest, were successfully made. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE