SVIN - St Vincents
We operate broadband and geophone stations under the network code BK. The Berkeley Digital Seismic Network (BDSN) is a regional network of very broadband and strong motion seismic stations designed to monitor regional seismic activity as well as provide high quality data. The Berkeley borehole stations have borehole geophones or other seismic sensors and may have other geophysical instrumentation.
BARD is our GPS network for monitoring crustal deformation across the Pacific-North America plate boundary and in the San Francisco Bay Area for earthquake hazard reduction studies and rapid earthquake emergency response assessment
| Station Name | SVIN (SVIN) |
| In Operation | 2003/08/05 17:51:00 - Present |
| Latitude | |
| Longitude: | |
| Elevation: | -27.539 meters |
| Instrumentation | Borehole GPS Other |
Location
SVIN is located in San Rafael, California, under the auspices of the St. Vicent's School for Boys. This site is known as SFSTV in the USGS Low Frequency Network.Network
Mini Plate Boundary Observatory Network (BK)Bay Area Regional Deformation Network Network (BARD)
USGS Low Frequency Network (UL)
Geology
Alluvium, lake, playa, and terrace deposits
Borehole Conditions
The MiniPBO borehole was installed on 08/29/2002. The strainmeter was installed at 527.0 ft and the seismometer package at 500.0 ft depth. This figure shows the location of equipment in the borehole.GPS Monument Description
1.25" pipe bolted into borehole casing
Table of Seismic Instrumentation
| Sensor | Datalogger | SEED Channels | Location | |
| Geophone | Mark Products L-22 Horizontal Geophone | BASALT8X | EP?,LP?,SP? | 40 |
| Mark Products L-22 Vertical Geophone | BASALT8X | EP?,LP?,SP? | 40 | |
| Auxiliary | CPULoadAverage | BASALT8X | LC? | 40 |
| CalibrationInput | BASALT8X | LC? | 40 | |
| ClockPhase | BASALT8X | LC? | 40 | |
| ClockQuality | BASALT8X | LC? | 40 | |
| DataStorageUsed | BASALT8X | LC? | 40 | |
| Humidity | BASALT8X | LI? | 40 | |
| InputVoltage | BASALT8X | LE? | 40 | |
| Sacks 3-component Tensor Strainmeter | BASALT8X | BS?,HS?,LS? | 40 | |
| Setra Systems Model 270 Barometer | BASALT8X | LD? | 40 | |
| SystemCurrent | BASALT8X | LE? | 40 | |
| Temperature | BASALT8X | LK? | 40 |
GPS Instrumentation
| Receiver | Antenna | Radome | - | |
| GPS | SEPTENTRIO POLARX5 | ASHTECH ASH701945C_M | SCIT | - |
Waveforms and associated metadata, and GPS data, are available at the Northern California Earthquake Data Center (NCEDC).
Waveform Data
- BK Information Directory, including
- List of station locations
- List of available channels
- Instrument Response
- Querying the archives
- Download waveform data
GPS Data
- Site log: svin.log
Data Type From To Low-rate raw --- --- Low-rate rinex 11/20/2003 present High-rate raw 11/20/2003 present High-rate rinex 11/20/2003 present
Noise Analysis
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GPS Data Quality
Completeness
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.
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Multipath
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.
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Signal-to-Noise Ratio
The Signal-to-Noise ratios are the mean values above the QC elevation mask for L1 and L2 respectively.
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