DTIC ADA121640: A Study of Secular and pdf

DTIC ADA121640: A Study of Secular and

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Borehole tiltmeter arrays were used to measure the tidal admittance at our two sites and to study the long-term performance of our instruments. These studies have resulted in several improvements to our original design. We were also fortunate in being able to monitor the surface tilting reslting from a nearby hydro-fracture experiment near our Erie site. The parameters of the hydro-fracture experiment as deduced from the tilt record are in reasonable agreement with simple models of the region. (The hydro-fracture experiments was not planned. We understood it only when we discovered the pumping crew in the field south of our Erie array.) During the period covered by this report, we also completed the design of the Yellowstone array and began its construction. We have presented details of our design in our quarterly progress reports, and we shall only discuss it briefly here

• Creator/s: Defense Technical Information Center
• Date: 9/15/1982
• Year: 1982
• Book Topics/Themes: DTIC Archive, Levine, Judah, COLORADO UNIV AT BOULDER, *TILT, *TIDES, ARRAYS, ROCK, FRACTURE(MECHANICS), VARIATIONS, EARTH CRUST, WATER INJECTION, DEEP DEPTH, ADMITTANCE, TILTMETERS

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