Assessment of GPS velocity accuracy for the Basin and Range Geodetic Network (BARGEN)

Details Assessment of GPS velocity accuracy for the Basin and Range Geodetic Network (BARGEN) Assessment of GPS velocity accuracy for the Basin and Range Geodetic Network (BARGEN)

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30g..64d&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 7, pp. 64-1, CiteID 1411, DOI 10.1029/2003GL016961

Physics

12

Geodesy And Gravity: Crustal Movements-Intraplate (8110), Geodesy And Gravity: Space Geodetic Surveys, Geodesy And Gravity: Instruments And Techniques

Scientific paper

We assess the accuracy of horizontal velocity estimates from the Basin and Range Geodetic Network (BARGEN), a continuous GPS network that has been in operation since 1996. To make this quantitative assessment, we use a procedure that we term the ``whole-error'' method. In this method, the measure of the velocity errors is the root-mean-square (RMS) residual velocity relative to a simple geophysical model. This method produces a conservative estimate of the uncertainties, since errors in the geophysical models also contribute to the RMS residual. Using estimates from two different BARGEN subnetworks, the Northern Basin and Range and the Yucca Mountain Cluster, we determine velocity uncertainties of 0.1-0.2 mm yr-1. Since BARGEN covers a significant fraction of area of the proposed Plate Boundary Observatory component of EarthScope, our results indicate a good ability of this project to determine highly accurate long-term horizontal crustal velocities and deformation rates in this region.

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