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125 Years of Sound Science, serving society

MNRC - McLaughlin Mine, CA, USA

Station Name MNRC (MNRC)
In Operation 2003/06/19 15:00:00 - Present
Elevation: 709.87 meters
Instrumentation Broadband

  • Site


    The MNRC site is on property owned and formerly operated by Homestake Mining Company as a surface gold mine. The geology of the area is extremely varied and complex. With the conclusion of mining operations, the property will be managed by UC Davis as the McLaughlin Reserve (part of the University of California Natural Reserve System. The seismographic vault is the first new research project on the reserve. The site is located approximately 20 kilometers east of the town of Lower Lake, California in an area of Franciscan sandstone.

    Support for MNRC was provided by the Governor's Office of Emergency Services as part of the California Integrated Seismic Network.


    BK, BARD (Berkeley Digital Seismic Network and Bay Area Regional Deformation Network)


    Franciscan sandstone

    Vault/Borehole Conditions

    A steel and concrete vault from a shipping container similar to those found at stations JCC, PKD, and HOPS was constructed. Power and telephone lines were trenched approximately 300 meters to the site. Because of the remoteness of the site, digital telephone data circuits are not available. Telemetry was established in spring 2004 using a radio network that brings the data down to Napa and into the frame-relay network.

    GPS Monument Description

    Antenna mount is embedded in wall of concrete seismic vault, built on bedrock.
  • Plots & Figures

    Seismic Station Pictures

    View of the MNRC vault at McLaughlin Reserve

    View of the MNRC vault at McLaughlin Reserve

    STS-2 and Episensor installation at MNRC

    STS-2 and Episensor installation at MNRC

    GPS Station Timeseries

    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

  • Instrumentation

    Table of Seismic Instrumentation

    SensorDataloggerSEED ChannelsLocation
    BroadbandStreckeisen STS-2 VBB Tri-Axial SeismometerQ330HR-GFEBH?,HH?,LH?,VH?00
    AccelerometerKinemetrics FBA ES-T Accel. (2 g max 10 v/g)Q330HR-GFEHN?00
    GPSTopcon Net-G3ATopcon Choke-RingSCIGN Tall-
    SensorDataloggerSEED ChannelsLocation
  • Data & Metadata

    Waveforms and associated metadata, and GPS data, are available at the Northern California Earthquake Data Center (NCEDC).

    Waveform Data

    GPS Data

  • Data Quality

    Noise Analysis

    View more noise plots

    GPS Data Quality


    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
    MNRC completeness last year
    MNRC completeness 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
    MNRC multipath last year
    MNRC multipath lifetime