CROW - Crows Landing
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 | CROW |
| In Operation | 2022-12-17 00:00:00 +0000 - present |
| Latitude | |
| Longitude: | |
| Elevation: | 3.8114 meters |
| Instrumentation | GPS |
Location
Site is located at Crows Landing in Patterson, CA.Network
BARD (Bay Area Regional Deformation Network)GPS Monument Description
Deep-Drilled Braced
Table of Seismic Instrumentation
| Receiver | Antenna | Radome | - | |
| GPS | SEPTENTRIO POLARX5 | SEPTENTRIO SEPCHOKE_B3E6 | SPKE | - |
GPS data is available at the Northern California Earthquake Data Center (NCEDC).
GPS Data
- Site log: crow.log
Data Type From To Low-rate raw Low-rate rinex 12/17/2022 present High-rate raw 12/17/2022 present High-rate rinex 12/17/2022 present
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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