Location

Site is located at the UC Berkeley Seismic Replacement Building in Berkeley, CA.

GPS Monument Description

Threaded rod braced and bolted on building roof

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

• USGS Timeseries (GIPSY)
• UNR Timeseries (GIPSY)

*discontinued

GPS Station Pictures

Table of Seismic Instrumentation

	Receiver	Antenna	Radome
GPS	Septentrio PolaRx5	TopCon Choke-ring	NONE

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

GPS Data

Data Type	From	To
Low-rate raw	11/14/2006	7/28/2006
Low-rate rinex	11/14/2006	present
High-rate raw	7/28/2006	present
High-rate rinex	5/1/2010	present

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

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

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

Lifetime