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Characterization of site-specific GPS errors using a short-baseline network of braced monuments at Yucca Mountain, southern Nevada.

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Characterization of site-specific GPS errors using a short-baseline network of braced monuments at Yucca Mountain, southern Nevada.

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dc.contributor.author Hill, Emma M.
dc.contributor.author Davis, James L.
dc.contributor.author Elosegui, Pedro.
dc.contributor.author Wernicke, Brian P.
dc.contributor.author Malikowski, Eric.
dc.contributor.author Niemi, Nathan A.
dc.date.accessioned 2012-06-19T09:12:22Z
dc.date.available 2012-06-19T09:12:22Z
dc.date.copyright 2009
dc.date.issued 2012-06-19
dc.identifier.citation Hill, E. M., Davis, J. L., Elo´segui, P., Wernicke, B. P., Malikowski, E., & Niemi, N. A. (2009). Characterization of site-dependent GPS errors using a short-baseline network of braced monuments at Yucca Mountain, southern Nevada. Journal of Geophysical Research,114, 1-13.
dc.identifier.uri http://hdl.handle.net/10220/8210
dc.description.abstract We use a short-baseline network of braced monuments to investigate site-specific GPS effects. The network has baseline lengths of ∼10, 100, and 1000 m. Baseline time series have root mean square (RMS) residuals, about a model for the seasonal cycle, of 0.05–0.24 mm for the horizontal components and 0.20–0.72 mm for the radial. Seasonal cycles occur, with amplitudes of 0.04–0.60 mm, even for the horizontal components and even for the shortest baselines. For many time series these lag seasonal cycles in local temperature measurements by 23–43 days. This could suggest that they are related to bedrock thermal expansion. Both shorter-period signals and seasonal cycles for shorter baselines to REP2, the one short-braced monument in our network, are correlated with temperature, with no lag time. Differences between REP2 and the other stations, which are deep-braced, should reflect processes occurring in the upper few meters of the ground. These correlations may be related to thermal expansion of these upper ground layers, and/or thermal expansion of the monuments themselves. Even over these short distances we see a systematic increase in RMS values with increasing baseline length. This, and the low RMS levels, suggests that site-specific effects are unlikely to be the limiting factor in the use of similar GPS sites for geophysical investigations.
dc.format.extent 13 p.
dc.language.iso en
dc.relation.ispartofseries Journal of geophysical research
dc.rights © 2009 by the American Geophysical Union (AGU).This paper was published in Journal of Geophysical Research and is made available as an electronic reprint (preprint) with permission of (AGU). The paper can be found at DOI: [http://dx.doi.org/10.1029/2008JB006027].  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.
dc.subject DRNTU::Science::Geology.
dc.title Characterization of site-specific GPS errors using a short-baseline network of braced monuments at Yucca Mountain, southern Nevada.
dc.type Journal Article
dc.identifier.doi http://dx.doi.org/10.1029/2008JB006027
dc.description.version Published version

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