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

GPS Station Daily Timeseries

GPS Station Pictures

CROW

CROW

Table of Seismic Instrumentation

ReceiverAntennaRadome-
GPSSEPTENTRIO POLARX5SEPTENTRIO SEPCHOKE_B3E6SPKE-

GPS data is available at the Northern California Earthquake Data Center (NCEDC).

GPS Data

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.

Previous Year
CROW completeness last year
Lifetime
CROW completeness lifetime

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.

Previous Year
CROW multipath last year
Lifetime
CROW multipath lifetime

Signal-to-Noise Ratio

The Signal-to-Noise ratios are the mean values above the QC elevation mask for L1 and L2 respectively.

Previous Year
CROW SNR last year
Lifetime
CROW SNR lifetime