PBO Borehole Products

Borehole Strainmeters

• OVERVIEW

The PBO network contains 74 borehole strainmeters. A list of borehole strainmeter stations including links to data at NCEDC (bottle, SEED), IRIS DMC (bottle, SEED), and UNAVCO (bottle, ASCII); geophysical logging; pore pressure data (ASCII); processed data (XML, ASCII); station notes (.pdf); and time series plots can be accessed via the straimeter data products page.

    UNAVCO PBO Strainmeter Products

    Strainmeter Products Summary

• NETWORK MAPS AND PLOTTING TOOLS

View custom data plots via PBO's online plotting tool

    UNAVCO PBO BSM/Pore Interactive Plotting Tool

Interactive strainmeter maps with metadata and state-of-health information

    Strainmeter Maps

• METADATA

Strainmeter metadata can be found on the station home and equipement pages which are accessed via the PBO Strainmeter Products page. A history of station maintenence is listed in a station notes PDF file which can also be accessed from the PBO Strainmeter Products page and home pages.

    Strainmeter Metatdata Summary

    Borehole Drawings

    SPOTL Computed Strain Tides

• DATA QUALITY

Data quality metrics such as state of borehole compression and signal to noise ratio are computed and updated every three months.

    BSM Data Quality Metrics

• RAW DATA ACCESS AND FORMATS

Access SEED data via the NCEDC or IRIS DMC websites

    NCEDC Plate Boundary Observatory Strain Data

    EarthScope Data at the IRIS DMC

    PBO SEED channel codes

Access low frequency strain data in ASCII and bottle format from UNAVCO

    ASCII Strain Data

    Bottle Strain Data

Information on data formats

    PBO bottle format

    How are data downsampled by the GTSM21 data logger?

    PBO SEED channel codes

    SEED manual, version 2.4

    How to access SEED data at the IRIS DMC

    How to access SEED data at the NCEDC

    Reading SEED files

• PROCESSED DATA ACCESS AND FORMATS

    How are the PBO Level 2 borehole strainmeter products generated?

    What is the format for a PBO strain XML file?

    The program rdstrain.pl can be used to extract data from PBO LSM and BSM XML files.

• SHORT COURSES AND EMAIL LISTS

UNAVCO has hosted a series of short-courses on how to work with strain and tilt data.

    Strainmeter Short Courses

    Strainmeter Information Mailing List

Seismometers

PBO operates 78 borehole seismometers, all but 5 are installed in the same boerholes as the strainmeters. State of health, time-series plots and dataless can be accessed from our seismic web page .

PBO Seismic Network

Tiltmeters

There are 26 tiltmeters in the PBO network, all in volcanic regions, Mt. St. Helens, Yellowstone and Alaska. Data and time-series plots can accessed from our tilmeter web page .

PBO Tiltmeter Network

Pore Pressure

• How are PBO pore pressure data archived?
• How is the pore pressure measured?

Laser Strainmeter Products

• How do long-baseline laser strainmeters work?
• What is the format for a PBO Ice-9 file?

Raw

• What is the format for a RINEX file?
• What is the format for an IGS site log?

Processed

• How are the PBO GPS Level 2 products generated?
• How are PBO GPS products named?
• What is the format for a SINEX file?
• What is the format for a PBO phase RMS file?
• What is the format for a PBO station position time series file?
• What is the format for a PBO network velocity field file?
• What is modified Julian date?
• How do I convert GPS week/day to other date standards?
• How do I plot PBO GPS station position time series?

  » Download our parsing code

  This is a Matlab script called plot_pbo_ts.m. Contact Adrian Borsa for assistance.