SITE CHARACTERIZATION BY PASSIVE MONITORING OF HIGH FREQUENCY MICROSEISMS

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$49,630.00
Award Year:
1989
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
10111
Agency Tracking Number:
10111
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
5255 Pine Ridge Rd, Golden, CO, 80403
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Robin K Mcguire
(303) 278-9800
Business Contact:
() -
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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