SITE CHARACTERIZATION BY PASSIVE MONITORING OF HIGH FREQUENCY MICROSEISMS

Award Information

Agency: Department of Defense

Branch: Air Force

Contract: N/A

Agency Tracking Number: 10111

Amount: $49,630.00

Phase: Phase I

Program: SBIR

Solicitation Topic Code: N/A

Solicitation Number: N/A

Timeline

Solicitation Year: N/A

Award Year: 1989

Award Start Date (Proposal Award Date): N/A

Award End Date (Contract End Date): N/A

Small Business Information

Risk Engineering Inc.

5255 Pine Ridge Rd

Golden, CO 80403

United States

DUNS: N/A

HUBZone Owned: No

Woman Owned: No

Socially and Economically Disadvantaged: No

Principal Investigator

Name: Robin K Mcguire
Phone: (303) 278-9800

Business Contact

Phone: () -

Research Institution

N/A

Abstract

THIS WORK WILL EXAMINE THE FEASIBILITY OF RECORDING MICROEARTHQUAKES AND MICROTREMOR NOISE AT HIGH FREQUENCIES (UP TO 50 HZ), ANALYZING THE FOURIER AND RESPONSE SPECTRUM CHARACTER AT HIGH FREQUENCIES TO DETERMINE NEAR SURFACE ROCK ATTENUATION, AND RELATING THIS TO ENGINEERING ROCK PROPERTIES. TWO SITES WILL BE INSTRUMENTED IN CALIFORNIA (A HARDAND SOFT-ROCK SITE) WHERE AVAILABLE WELL DATA INDICATE ROCK PROPERTIES TO DEPTHS OF 0.6 AND 1.8 KM, RESPECTIVELY. MICROSEISMS WILL BE RECORDED AT THESE TWO SITES AND WILL BE ANALYZED TO EVALUATE HIGH FREQUENCY CHARACTERISTICS AND TO CALCULATE INTRINSIC ATTENUATION. THE INFERRED ENGINEERING PROPERTIES OF THE ROCK WILL BE COMPARED TO BOREHOLE DATA TO EVALUATE THE FEASIBILITY OF THE METHOD AS A SCREENING TOOL FOR SITE CHARACTERIZATION.

* Information listed above is at the time of submission. *

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SITE CHARACTERIZATION BY PASSIVE MONITORING OF HIGH FREQUENCY MICROSEISMS