SBRN - San Bruno Mtn., Brisbane, CA, USA



Station Name SBRN (SBRB/SBRN)
In Operation 2002/08/15 00:00:00 - Present
Latitude
Longitude:
Elevation: 4.0 meters
Instrumentation Borehole
GPS
Other

Location

SBRN is located on San Bruno Mountain, under the auspices of the city of Brisbane. This site is known as SFBSB in the USGS Low Frequency Network. 1.25" pipe bolted into borehole casing SBRB replaced retired GPS site SBRN. Monument is drilled and pinned into the roof of a single story concrete structure.

Network

Mini Plate Boundary Observatory Network (BK)
Bay Area Regional Deformation Network Network (BARD)
USGS Low Frequency Network (UL)

Geology

TBD

Borehole Conditions

The MiniPBO borehole was installed on 08/06/2001. The strainmeter was installed at 551.5 ft and the seismometer package at 530.0 ft depth. This figure shows the location of equipment in the borehole.

GPS Monument Description

1.25" pipe bolted into borehole casing

Seismic Station Pictures

View of SBRN

View of SBRN

No image

No image

GPS Station SBRB Pictures

SBRB

SBRB

SBRB

SBRB

Retired GPS Station SBRN Pictures

SBRN

SBRN

SBRN

SBRN

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

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

We are currently reprocessing older data and full lifetime time series are not yet available. Check back here or send an email to bard@seismo.berkeley.edu for information on older time series.

Table of Seismic Instrumentation

SensorDataloggerSEED ChannelsLocation
GeophoneMark Products L-22 Horizontal GeophoneQ330-GFEEP?,LP?,SP?40
Mark Products L-22 Vertical GeophoneQ330-GFEEP?,LP?,SP?40
ReceiverAntennaRadome-
GPSTopcon Net-G3AAshtech Choke-RingNone-
SensorDataloggerSEED ChannelsLocation
OthersParoscientific 8WD Digital Pressure MeterQ330-GFELD?40
Sacks 3-component Tensor StrainmeterQ330-GFEBS?,HS?,LS?40
Pinnacle5000QEPBA?,LA?EP
AuxiliaryVCOValueQ330-GFE
AntennaCurrentQ330-GFEVK?40
ClockPhaseQ330-GFEVE?40
ClockQualityQ330-GFEVE?40
SystemCurrentQ330-GFEVC?40
InputVoltageQEPLK?EP
InternalHumidityQEPLI?EP
InternalPressureQEPLD?EP
InternalTemperatureQEPLK?EP
PLLOffsetQEPLC?EP
Setra Systems Model 270 BarometerQEPLD?EP
SystemTemperatureQEPLK?EP

Waveforms and associated metadata, and GPS data, are available at the Northern California Earthquake Data Center (NCEDC).

Waveform Data



GPS Data

Noise Analysis

View more noise plots

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
SBRB completeness last year
Lifetime
SBRB 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
SBRB multipath last year
Lifetime
SBRB multipath lifetime

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
SBRN completeness last year
Lifetime
SBRN 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
SBRN multipath last year
Lifetime
SBRN multipath lifetime