Location

Site is located at the Lick Observatory atop Mount Hamilton, and is under the auspices of UC Santa Cruz. Site is collocated with BDSN station MHC.

GPS Monument Description

Threaded 5/8" rod cemented into roof of concrete building.

GPS Station Daily 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

*discontinued

GPS Station Pictures

Table of Seismic Instrumentation

ReceiverAntennaRadome
GPSTopCon Net-G3AAshtech Choke-ringSCIGN Short

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
MHCB completeness last year
Lifetime
MHCB 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
MHCB multipath last year
Lifetime
MHCB 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
MHCB SNR last year
Lifetime
MHCB SNR lifetime