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The Plate Boundary Observatory (PBO), part of the EarthScope Program that is funded by the National Science Foundation, studies the three-dimensional strain field resulting from active plate boundary deformation across the Western United States.

From a science perspective the 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 and geologic and paleoseismic investigations to examine the strain field over longer time scales.

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Graphic: PBO At Work Education and Outreach Education and Outreach Data Access Strainmeter Operations GPS Operations

Photo:The Borehole Strainmeter (BSM) stations in Southern California observed an interesting sequence of earthquakes located in the Baja region on 12/30/2009
Borehole Strainmeters Observe M4.9 Baja Earthquake on December 30, 2009
Feb 07, 2010
Photo:Figure 1: Akutan Island Data Telemetry.
Akutan Island GPS Update
Jan 28, 2010
Photo:Figure caption:  Snow depth estimates from ultrasonic snow-depth sensors (grey line), physical ground measurements (black diamonds) and GPS multipath analysis (colored circles) for the October 28-30 snowstorm at PBO station P041 are in close agreement.
GPS Data Used to Measure Snow Depth
Nov 28, 2009
Photo:Strain offsets recorded at PBO borehole strainmeter station B086 near Anza, California.
PBO Data: Strain Offsets Following Passage of Seismic Waves
Sep 11, 2009

Photo: P795 -  Noble_PassCS2009

4Char: P795
Region: SW
Date: Nov 12, 2009
N/A: Photo Pending

4Char: C056
Region: PBO NW
Date: Oct 14, 2009
Photo: AC78 -  Tetlin_2__AK2009

4Char: AC78
Region: AK
Date: Sep 26, 2009
Photo: P794 -  AnthonyPk2CN2009

4Char: P794
Region: NW
Date: Aug 28, 2009
Photo: C044 -  Sanhedrin_CN2009

4Char: C044
Region: NW
Date: Jul 30, 2009

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Plotting/Data Access Resources
  » BSM Data
  » SQUID
  » GPS Data (Single Chart)
  » GPS Data (Multi Chart)

Mapping Resources
  » PBO Network Maps
  » Network Progress (Static)
  » Network Progress (KMZ)
  » Network Growth (KMZ)
  » Velocity Field (KMZ)
  » Other Google Earth Resources
  » GPS Station Coordinates (TXT)
  » BSM Station Coordinates (TXT)

Other resources
  » Network QC Statistics

Station Homepages

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Page Last Modified: Tuesday, March 24, 2009 10:08:05 MDT