Spontaneous potential and telluric measurements on Rainier Mesa relaed to the NPE

Conference · Fri Dec 30 23:00:00 EST 1994

OSTI ID:96015

Sweeney, J J ^[1]

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1. Lawrence Livermore National Lab., CA (United States)

We made measurements of spontaneous potential (SP) on Rainier Mesa to see if changes in subsurface electrical properties of rock related to the Non-Proliferation Experiment (NPE) explosion can be detected at the surface. A north-south line, repeated 3 times and running within 50 m of surface ground zero (SGZ) of Hunter`s Trophy and within 20 m of SGZ of the NPE, was measured before and after the NPE. An east-west line, with one end within 20 m of SGZ of the NPE was also run before and after the NPE. High values of surface potential along the north-south line in the vicinity of the NPE apparently moved northward after the detonation. A similar change was not noted on the east-west line. A telluric line (0.025-0.1 Hz and 8.0 Hz) was also run prior to the NPE along the same north-south line as the SP measurement, but farther to the west of SGZ for Hunter`s Trophy. There is a prominent high in the 8 Hz data in the northern part that may be related to a former nuclear test, but it could also be related to local geology. Results from these geophysical methods, while showing some promise for use in an on-site monitoring regime, also emphasize the need for repeatable background reference data.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• OSTI ID: 96015
• Report Number(s): CONF-9404100--; ON: DE95011413
• Country of Publication: United States
• Language: English

Related Subjects

35 ARMS CONTROL
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
AMMONIUM NITRATES
CHEMICAL EXPLOSIONS
COMPARATIVE EVALUATIONS
DATA ACQUISITION
DETONATIONS
ELECTRIC FIELDS
ELECTRICAL SURVEYS
FUEL OILS
MAGNETIC FIELDS
MAPS
NEVADA TEST SITE
NON-PROLIFERATION TREATY
NUCLEAR EXPLOSION DETECTION
NUCLEAR EXPLOSIONS
ON-SITE INSPECTION
ROCKS
UNDERGROUND EXPLOSIONS
VERIFICATION
WAVE PROPAGATION