Greetings, For the last few months there have been very few earthquakes here in Northern California. Today we had 5 minor events within a few hours. Here's the event listings: 01/07/03 19:02:50 36.70N 121.33W 5.9 4.2Mw A* 11 km S of Tres Pinos, CA 01/07/03 19:07:16 36.68N 121.32W 5.8 4.0Mw C* 12 km S of Tres Pinos, CA 01/07/03 19:31:58 36.70N 121.33W 4.1 3.0Ml A* 11 km S of Tres Pinos, CA 01/07/03 21:57:18 36.70N 121.33W 4.4 3.8Mw A* 11 km S of Tres Pinos, CA 01/07/03 22:13:26 36.69N 121.31W 4.1 3.0Ml A* 12 km S of Tres Pinos, CA and this one yesterday: 01/07/02 17:33:53 36.69N 121.33W 6.3 4.0Mw B* 11 km S of Tres Pinos, CA Tres Pinos is ~120km (75 miles) south of my station. If you are interested in looking at the different responses of different sensors, this would be a good time to look at my event files http://www.seismicnet.com/cgi-dos/event.exe). Here's a short description for each event file: *.LCN, *.LCE and *.LCZ: These are the high gain channels from a Forced-Balance Accelerometer (Kinemetrics FBA-23A). I use this sensor as a reference since it was calibrated at Kinemetrics about two years ago. Maximum acceleration was ~400 ug for the 4.2 event. *.LC1: My N-S Lehman, *.LC8 and *.LC3 my high/low frequency ports of my N-S SG sensor. *.RWN, *.RWE and *.RWZ: There files come from one of the 4.5HZ 3 component used Mark Products L-15B geophones I am selling. For more information on my station and the sensors I am recording please see http://www.seismicnet.com/rwcstation.html. Hopefully mother nature won't produce any larger calibration pulses.... Regards, Larry Cochrane Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>