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125 Years of Sound Science, serving society

SCCB - Santa Clara Co. Comm. Cntr., Santa Clara, CA, USA

Station Name SCCB (LUTZ)
In Operation 2000/04/28 11:17:00 - Present
Elevation: 98.40 meters
Instrumentation Broadband

  • Site


    The SCCB site is located at the Santa Clara County communications facility in south San Jose. This site is centrally located within the Santa Clara valley on a serpentine and Franciscan outcrop. Emergency response dispatchers and personnel are at the site around the clock. Power at the site is backed up by uninterruptible power supplies and diesel generators. This is also the location of the BARD station LUTZ.

    SCCB is one of currently two BDSN sites that consisting of a strong-motion sensor and Q730 datalogger. The HFN station RFSB has a surface strong-motion sensor and Q730 datalogger in addition to the borehole installation.


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



    Vault/Borehole Conditions

    Construction at the site was limited to trenching from an existing concrete radio and microwave vault to a rock outcrop situated 100 meters from the building. By locating the seismometer outside the concrete building, free-field interference was minimized. A concrete pad was poured to level the seismometer at that location. A double shielded cable was used to connect the seismometer to the datalogger, in order to minimize RF pickup from the nearby emergency transmission equipment. Ferrite beads were added to the cable to further reject unwanted RF which could couple into the cable.

    GPS Monument Description

    Threaded 5/8" rod cemented in bedrock
  • Plots & Figures

    Seismic Station Pictures

    View of SCCB container

    View of SCCB container

    View of SCCB vault

    View of SCCB vault

    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
    AccelerometerKinemetrics FBA ES-T Accel. (2 g max 10 v/g)Q330HR-GFEHN?00
    GPSTopcon Net-G3AAshtech Choke-RingSCIGN Short-
    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
    LUTZ completeness last year
    LUTZ 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
    LUTZ multipath last year
    LUTZ multipath lifetime