LONG-RANGE SEISMIC MEASUREMENTS PROGRAM PARTICIPATION IN PROJECT EARLY RISE.

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Abstract:

Portable Seismograph Systems, operating under the Long-Range Seismic Measurements Program LRSM, occupied and recorded data from 77 temporary sites during the 21-day Project EARLY RISE experiment. As was anticipated, the portable systems were operationally well-suited for the quick set-up time required by the shot schedules in this program. Site selection was performed by the systems operators rather than by an advance site selection team. The tolerance on site locations was or -5 km. The magnetic-tape data recorded during the experiment were played out on visual records and sent to the project investigators. Data recorded by the 16 LRSM mobile observatories were also made available. A preliminary plot of travel times versus distance from near-regional to teleseismic over two profile lines in Canada indicates a constant P-wave velocity of 8.46 kmsec. Seismograms from selected EARLY RISE events, recorded by both the mobile observatories and the systems, are appended to this report. Author

Author(s):
Rasmussen, Darrell C. ; Reakes, Ray G.
Author Organization(s):
GEOTECH GARLAND TX
Descriptive Note:
Technical rept.,
Pagination:
0050

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-66-116
Contract/Grant Number(s):
AF 33(657)-16270
Project Number(s):
VT/6703
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*SEISMOLOGICAL STATIONS, SEISMOGRAPHS), SEISMIC WAVES, SEISMOMETERS, PORTABLE EQUIPMENT, MAGNETIC TAPE, RECORDING SYSTEMS, MOBILE, CANADA, VELOCITY, UNITED STATES
Field(s)/Group(s):
Seismology
Keyword(s):
EARLY RISE PROJECT, LRSM(LONG RANGE SEISMIC MEASUREMENTS)
Report Date:
1967 Jan 06