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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:Drilling VA01 in response to Mineral VA 5.8M Earthquake
Broadband Geodetic and Seismological Response to the Mineral, VA Earthquake
Dec 12, 2011
Photo:High-rate data recorded at PBO borehole B076  following the March 11, 2011, M9 Tohoku  earthquake. The upper plot shows the 1-sps strain (black) and the predicted earth tide and ocean load signal (red).
High Rate Strain and Tilt Data Products
Nov 14, 2011
Photo:Western U.S. velocity field from the PBO network, 2005-2011
New PBO GPS Velocity Field
Aug 30, 2011
Photo:Figure 1:  Map of the Plate Boundary Pacific Northwest Strainmeter Network
PBO Strainmeters Record the 2011 ETS Cascadia Episodic tremor and Slip Event
Aug 22, 2011

GPS: Photo Pending

4Char: CN44
Region: COCO
Date: Jun 14, 2016
GPS: Photo Pending

4Char: OLO3
Region: Tanzania
Date: Jun 12, 2016
GPS: Photo Pending

4Char: LIEC
Region: Ecuador
Date: Jun 07, 2016
Photo: LMEC -  LMEC_LMnaECU2016

4Char: LMEC
Region: Ecuador
Date: Jun 02, 2016
Photo: SDEC -  SDEC_STd_ECU2016

4Char: SDEC
Region: Ecuador
Date: May 25, 2016

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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 Status (KMZ)
  » Velocity Field (KMZ)
  » Other Google Earth Resources
  » GPS Station Coordinates (TXT)
  » BSM Station Coordinates (TXT)

Other resources
  » Network QC Statistics

Station Homepages

Graphic: Small Map