Plate Boundary Observatory Strain Data
Data access | Collaborations
The Plate Boundary Observatory (PBO) component of EarthScope is a geodetic observatory designed to study the three-dimensional strain field resulting from deformation across the active boundary zone between the Pacific and North American plates in the western United States. The observatory consists of arrays of Global Positioning System (GPS) receivers and strainmeters which will be used to deduce the strain field on timescales of days to decades.
The NCEDC serves as an archive for the PBO strainmeter data, which consists of borehole strainmeters and long-baseline laser strainmeters. A total of five laser strainmeters and up to 175 borehole strainmeters will be installed over the next 4 years. Data from PBO has been assigned a network code of PB.
- Network Code
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PB
- Typical Recorded Channels
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Borehole Strainmeters Sensor SEED Channels SEED Location Rate (samples/sec) Sampling Mode Gladwin Tensor Strainmeter BS1,BS1,BS3,BS4 T0 20 Hz Continuous Gladwin Tensor Strainmeter LS1,LS2,LS3,LS4 T0 1 Hz Continuous Pore pressure 1 Hz Continuous Barometric pressure LDO 1 Hz Continuous Downhole Thermistor 1 Hz Continuous Rainfall & surface temperature 1/300 Hz Continuous Laser Strainmeters Sensor SEED Channels SEED Location Rate (samples/sec) Sampling Mode Laser Strainmeter LS1 LM Continuous - Station Information
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- PB Information Directory, including
- List of station locations
- List of available channels
- Instrument Response
- PB Information Directory, including
- Data access
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- SEED data requests
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Waveform data from the PB network are available in SEED format.
Several tools provide access to SEED format data at the
NCEDC, both in terms of querying the archives and
allowing data requests.
- Querying the archives
- Requesting data by channel and time
- Requesting data by event
Help on using these tools is available.
- DART (Real-Time Data)
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The NCEDC
DART (Data Available in Real Time)
is a buffer of real-time telemetry MiniSEED data
that is accessible directly from the web or through data retrieval tools which will
be available in near future.
- Processed strain data
-
All PBO borehole strain data , laser strain data, and their associated environmental data are available in a "processed XML" format at 300 second (5 minute) sample interval. All data for one station year are contained in a single XML file. The XML file names contain the SEED station name, the year of the data, and the date and time that this data was created. PBO will be updating and adding data to these files on a regular basis. The NCEDC will maintain older copies of the data files, so that in general, you want only the most recent station year file for each station.
These XML borehole and laser strain data files are available at the the following locations, and are organized by year and PBO stationname.
PBO Site Type Link to Processed XML Data Borehole Strain Data http://www.ncedc.org/pbo/strain/processed/bsm/ Laser Strain Data http://www.ncedc.org/pbo/strain/processed/lsm/ The XML data files are compressed with the "bzip2" program, an open-source file compression program which is freely available in both source and executable format at: http://www.bzip.org/.
- Raw strain data
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All PBO laser strain and environmental data are also
available in the original "Ice9" format. These
raw format files are
organized by year and station. The file names indicate the year,
day of year, the station name and the sampling rate (1s - 1 sample per
second or 5 min - 1 sample every 5 minutes).
All PBO borehole strain and environmental data are also available in the original "Bottle" format. These raw format files are organized by year and station. The raw borehole and laser strain data files are available at the the following locations, and are organized by year and PBO stationname.
PBO Site Type Link to Raw Data Borehole Strain Data http://www.ncedc.org/pbo/strain/raw/bsm/ Laser Strain Data http://www.ncedc.org/pbo/strain/raw/lsm/
For more information on the PBO Strainmeter data, please see the PBO Strainmeter Data Site.
- Collaborations
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PBO strain data are also available through the
IRIS Data Management Center.
PBO is one component of the EarthScope Major Research Initiative funded by the National Science Foundation (NSF).
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Last modified: Wed Apr 25 18:44:22 PDT 2012