PTRL - Point Reyes Lighthouse

Location

Site is located at Point Reyes Lighthouse at Point Reyes National Seashore.

Network

BARD (Bay Area Regional Deformation Network)

GPS Monument Description

Shallow-drilled braced monument in sedimentary bedrock.

GPS Station Daily Timeseries

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

GPS Station Pictures

PTRL

Table of Seismic Instrumentation

	Receiver	Antenna	Radome	-
GPS	SEPTENTRIO POLARX5	SEPTENTRIO SEPCHOKE_B3E6	SPKE	-

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

GPS Data

• Site log: ptrb.log
  
  

  Data Type	From	To
  Low-rate raw	--	--
  Low-rate rinex	3/5/2021	present
  High-rate raw	3/5/2021	present
  High-rate rinex	3/5/2021	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