Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network

Data from BARGEN GPS stations around Yucca Mountain (YM) have been independently processed using GIPSY-OASIS and GAMIT/GLOBK. The RMS velocity differences between these solutions is 0.06 mm/yr ( east component) and 0.10 mm/yr ( north), indicating an ability to resolve tectonic signals > 0.3 mm/yr...

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Main Authors: Hill, Emma M., Blewitt, Geoffrey.
Format: Article
Language:English
Published: 2012
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Online Access:https://hdl.handle.net/10356/95505
http://hdl.handle.net/10220/8238
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-955052020-09-26T21:27:01Z Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network Hill, Emma M. Blewitt, Geoffrey. DRNTU::Science::Geology Data from BARGEN GPS stations around Yucca Mountain (YM) have been independently processed using GIPSY-OASIS and GAMIT/GLOBK. The RMS velocity differences between these solutions is 0.06 mm/yr ( east component) and 0.10 mm/yr ( north), indicating an ability to resolve tectonic signals > 0.3 mm/yr with high confidence. Inversion of GPS station velocities for Eastern California Shear Zone (ECSZ) fault parameters produces an unreasonably deep locking depth of similar to 30 km for the Death Valley-Furnace Creek fault system, contradicting seismological evidence. The GPS cluster locally west of YM observes a strain rate of 17.0 +/- 1.8 ns/yr, marginally higher than our ECSZ model predicts (13.9 +/- 0.7 ns/yr). Significantly, the cluster to the east observes 22.3 +/- 2.1 ns/yr, which is 6.2 sigma higher than the model (8.6 +/- 0.7 ns/yr), suggesting that additional sources of strain more local to YM (< 30 km) are currently active, collectively accumulating > 0.7 mm/yr. Published version 2012-06-25T03:31:15Z 2019-12-06T19:16:08Z 2012-06-25T03:31:15Z 2019-12-06T19:16:08Z 2006 2006 Journal Article Hill, E. M., & Blewitt, G. (2006). Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network. Geophysical Research Letters, 33. https://hdl.handle.net/10356/95505 http://hdl.handle.net/10220/8238 10.1029/2006GL026140 en Geophysical research letters © 2006 American Geophysical Union.This paper was published in Geophysical Research Letters and is made available as an electronic reprint (preprint) with permission of American Geophysical Union. The paper can be found at the following official URL: http://dx.doi.org/10.1029/2006GL026140. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 5 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Science::Geology
spellingShingle DRNTU::Science::Geology
Hill, Emma M.
Blewitt, Geoffrey.
Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network
description Data from BARGEN GPS stations around Yucca Mountain (YM) have been independently processed using GIPSY-OASIS and GAMIT/GLOBK. The RMS velocity differences between these solutions is 0.06 mm/yr ( east component) and 0.10 mm/yr ( north), indicating an ability to resolve tectonic signals > 0.3 mm/yr with high confidence. Inversion of GPS station velocities for Eastern California Shear Zone (ECSZ) fault parameters produces an unreasonably deep locking depth of similar to 30 km for the Death Valley-Furnace Creek fault system, contradicting seismological evidence. The GPS cluster locally west of YM observes a strain rate of 17.0 +/- 1.8 ns/yr, marginally higher than our ECSZ model predicts (13.9 +/- 0.7 ns/yr). Significantly, the cluster to the east observes 22.3 +/- 2.1 ns/yr, which is 6.2 sigma higher than the model (8.6 +/- 0.7 ns/yr), suggesting that additional sources of strain more local to YM (< 30 km) are currently active, collectively accumulating > 0.7 mm/yr.
format Article
author Hill, Emma M.
Blewitt, Geoffrey.
author_facet Hill, Emma M.
Blewitt, Geoffrey.
author_sort Hill, Emma M.
title Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network
title_short Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network
title_full Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network
title_fullStr Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network
title_full_unstemmed Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network
title_sort testing for fault activity at yucca mountain, nevada, using independent gps results from the bargen network
publishDate 2012
url https://hdl.handle.net/10356/95505
http://hdl.handle.net/10220/8238
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