JRSC - Jasper Ridge Biol. Preserve, Stanford, CA, USA
|Station Name||JRSC (JRSC)|
|In Operation||1994/06/30 21:20:00 - Present|
LocationThe site is located in the Jasper Ridge Biological Preserve in Stanford, California. It is the replacement installation for the STAN location and is operated cooperatively with Stanford University.
NetworkBK, BARD (Berkeley Digital Seismic Network and Bay Area Regional Deformation Network)
Vault/Borehole ConditionsThe vault is located in an east/west adit, 20' in length, constructed for the development of Searsville Dam (circa 1900). The instruments are located in an aluminum pressure tank on a concrete pier. Apporoximately 4 meters of overburden cover the adit. The datalogger and accessory equipment are located in front of the adit.
Plots & Figures
Aerial photograph of Jasper Ridge
Courtesy of the JRBP
Typical STS-2 installation
- Time series processing at the BSL
Last year Clean Clean & detrended Raw Raw & detrended Lifetime Clean Clean & detrended Raw Raw & detrended Text file (final results only) Clean Raw
GPS Station Pictures
Table of Seismic Instrumentation
Sensor Datalogger SEED Channels Location Broadband Streckeisen STS-2 VBB Tri-Axial Seismometer Q330HR-GFE BH?,HH?,LH?,VH? 00 Accelerometer TSA-100S (4 g max 5 v/g) Q330HR-GFE HN? 00 Receiver Antenna Radome - GPS TopCon Net-G3A TopCon Choke-ring SCIGN Tall - Sensor Datalogger SEED Channels Location Others Electric Field Dipole (Pb-PbCl or Cu-CuS Anodes) Q330 BQ?,LQ?,VQ? 10 BF7 Q330 BT?,LT?,VT? 20 ElectroMagnetics Inc. BF4 Magnetometer Q330 BT?,LT?,VT? 20 Auxiliary AntennaCurrent Q330 VE? 10 ClockPhase Q330 LC? 10 ClockQuality Q330 LC? 10 InputVoltage Q330 VE? 10 PacketBufferUsage Q330 VP? 10 SystemCurrent Q330 VE? 10 SystemTemperature Q330 VK? 10 VCOValue Q330 VC? 10
Data & Metadata
Waveforms and associated metadata, and GPS data, are available at the Northern California Earthquake Data Center (NCEDC).
- BK Information Directory, including
Data completeness is defined both as "Completeness of observations" and "Cycle slips per observation". "Completeness of Obs." is the number of epochs in the final RINEX file normalized to the expected number. This percentage will go down if time is missing from the RINEX file. "Cycle slips per Obs." is the total number of detected cycle slip normalized to the total number of observations in the RINEX file. This number will increase as the receiver loses lock on satellites more frequently.
Previous Year Lifetime
The effects of multipath on the data are estimated by parameters for L1 and L2 (MP1 and MP2 respectively); see Estey and Meertens (GPS Solutions, 1999) for derivation. The daily value is the RMS of MP1 and MP2 throughout the day and for all satellites. Higher values indicate a greater prevalence and/or strength of multipathing, i.e. objects on the ground are providing multiple reflection pathways from the satellite to antenna.
Previous Year Lifetime