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USGS · 70192470

Working with strainmeter data

Kathleen M. Hodgkinson·Duncan Agnew·Evelyn A. Roeloffs
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Abstract

The Plate Boundary Observatory (PBO), the geodetic component of the U.S. National Science Foundation–funded Earthscope program, includes 75 borehole and 6 laser strainmeters ( http://pbo.unavco.org ). The strainmeters are installed at several locations: on the Cascadia forearc in Washington state and on Vancouver Island, Canada; in arrays of two to nine instruments along the North American–Pacific plate boundary in California; at Mount St. Helens; and in Yellowstone National Park. For deformation signals seconds to weeks in duration, strainmeters have a resolution and a signal-to-noise ratio superior to those of seismometers and GPS. However, this high sensitivity can introduce nontectonic signals into strain data, presenting data interpretation challenges, especially for borehole strainmeters.

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Kathleen M. Hodgkinson, Duncan Agnew, Evelyn A. Roeloffs. 2013-02-26. Working with strainmeter data. https://doi.org/10.1002/2013eo090011

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