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125 Years of Sound Science, serving society

UCD1 - UC Davis, Davis, CA, USA

Station Name UCD1
In Operation 05/19/1996 - present
Latitude 38.5362
Longitude: -121.7511
Elevation: -0.3 meters
Instrumentation GPS

  • Site


    Site is located at UC Davis in Davis, CA.


    BARD (Bay Area Regional Deformation Network)

    GPS Monument Description

    On the roof of the UC Davis Geology Building. 5/8" threaded rod bolted to concrete
  • Plots & Figures

    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

    No image

    No image



  • Instrumentation

    Table of Instrumentation

    GPSTrimble NetRSTrimble Choke-ringNONE
  • Data & Metadata

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

    GPS Data

  • Data Quality

    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
    UCD1 completeness last year
    UCD1 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
    UCD1 multipath last year
    UCD1 multipath lifetime