Anza Borehole Experiment

Summary

Introduction

Two borehole sites were drilled in 1986 at Keenwild (KNW) in the San Jacinto Mountains and at the Piñon Flat Observatory (PFO) in the Santa Rosa Wilderness. Both sites consist of two holes (150m and 300m) which are both cased. Near surface site effects were examined using 8Hz Mark Products geophones at both KNW and PFO, (see reference below). In 1988, Mark Products L-22D 2Hz geophones were installed in each hole and logged on 12-bit USGS GEOS recorders until May 1989. In 1991, the 300 meter sensors were recorded on 16-bit Reftek recorders until May 1992.

Station Map

Station map

Station List

(plain text version)

sta ondate offdate lat lon elev staname statype refsta dnorth deast
KN1 1987203 1989119 33.714 -116.711 1.521 Keenwild Fire Station 300m Borehole, Mountain Cent ss – – –
KN1 1991321 1992136 33.714 -116.711 1.521 Keenwild Fire Station 300m Borehole, Mountain Cent ss – – –
KN2 1987203 1989119 33.714 -116.711 1.521 Keenwild Fire Station 150m Borehole, Mountain Cent ss – – –
KN3 1987203 1989119 33.714 -116.711 1.521 Keenwild Fire Station Surface Sensor, Mountain Cen ss – – –
PF1 1987266 1989119 33.611 -116.459 1.288 Pinyon Flat 300m Borehole, Riverside Co., Calif. ss – – –
PF1 1991321 1992136 33.611 -116.459 1.288 Pinyon Flat 300m Borehole, Riverside Co., Calif. ss – – –
PF2 1987277 1989119 33.611 -116.459 1.288 Pinyon Flat 150m Borehole, Riverside Co., Calif. ss – – –
PF3 1987277 1989119 33.611 -116.459 1.288 Pinyon Flat Surface Sensor, Riverside Co., Calif. ss – – –

Total: 8

Channel List

(plain text version)

sta chan ondate chanid offdate ctype edepth hang vang descrip
KN1 EHE 1987203 1 1989119 n 0.3 150 90 –
KN1 EHE 1991321 2 1992136 n 0.3 150 90 –
KN1 EHN 1987203 3 1989119 n 0.3 60 90 –
KN1 EHN 1991321 4 1992136 n 0.3 60 90 –
KN1 EHZ 1987203 5 1989119 n 0.3 0 0 –
KN1 EHZ 1991321 6 1992136 n 0.3 0 0 –
KN1 ELE 1991321 7 1992136 n 0.3 150 90 –
KN1 ELN 1991321 8 1992136 n 0.3 60 90 –
KN1 ELZ 1991321 9 1992136 n 0.3 0 0 –
KN2 EHE 1987203 10 1989119 n 0.15 35 90 –
KN2 EHN 1987203 11 1989119 n 0.15 305 90 –
KN2 EHZ 1987203 12 1989119 n 0.15 0 0 –
KN3 EHE 1987203 13 1989119 n -0 95 90 –
KN3 EHN 1987203 14 1989119 n -0 5 90 –
KN3 EHZ 1987203 15 1989119 n -0 0 0 –
PF1 EHE 1987266 16 1989119 n 0.3 280 90 –
PF1 EHE 1991321 17 1992136 n 0.3 280 90 –
PF1 EHN 1987266 18 1989119 n 0.3 190 90 –
PF1 EHN 1991321 19 1992136 n 0.3 190 90 –
PF1 EHZ 1987266 20 1989119 n 0.3 0 0 –
PF1 EHZ 1991321 21 1992136 n 0.3 0 0 –
PF1 ELE 1991321 22 1992136 n 0.3 280 90 –
PF1 ELN 1991321 23 1992136 n 0.3 190 90 –
PF1 ELZ 1991321 24 1992136 n 0.3 0 0 –
PF2 EHE 1987277 25 1989119 n 0.15 320 90 –
PF2 EHN 1987277 26 1989119 n 0.15 230 90 –
PF2 EHZ 1987277 27 1989119 n 0.15 0 0 –
PF3 EHE 1987277 28 1989119 n -0 85 90 –
PF3 EHN 1987277 29 1989119 n -0 355 90 –
PF3 EHZ 1987277 30 1989119 n -0 0 0 –

Total: 30

Selected References

URL: http://eqinfo.ucsd.edu/deployments/anza_borehole_experiment.php [Last updated: 2006-10-26 (299) 19:12:16 UTC]