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

(table 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   -   0   0   
KN1   1991321   1992136   33.714   -116.711   1.521   Keenwild Fire Station 300m Borehole, Mountain Cent   ss   -   0   0   
KN2   1987203   1989119   33.714   -116.711   1.521   Keenwild Fire Station 150m Borehole, Mountain Cent   ss   -   0   0   
KN3   1987203   1989119   33.714   -116.711   1.521   Keenwild Fire Station Surface Sensor, Mountain Cen   ss   -   0   0   
PF1   1987266   1989119   33.611   -116.459   1.288   Pinyon Flat 300m Borehole, Riverside Co., Calif.   ss   -   0   0   
PF1   1991321   1992136   33.611   -116.459   1.288   Pinyon Flat 300m Borehole, Riverside Co., Calif.   ss   -   0   0   
PF2   1987277   1989119   33.611   -116.459   1.288   Pinyon Flat 150m Borehole, Riverside Co., Calif.   ss   -   0   0   
PF3   1987277   1989119   33.611   -116.459   1.288   Pinyon Flat Surface Sensor, Riverside Co., Calif.   ss   -   0   0   

Total: 8

Channel List

(table 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: 2015-10-22 (295) 23:07:43 UTC]