Vertical motion determined using satellite altimetry and tide gauges
A robust method to estimate vertical crustal motions by combining geocentric sea level measurements from decadal (1992 - 2003) TOPEX/POSEIDON satellite altimetry and long-term (> 40 years) relative sea level records from tide gauges using a novel Gauss-Markov stochastic adjustment model is presen...
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ftchengkunguniv:oai:ir.lib.ncku.edu.tw:987654321/85625 2023-05-15T16:12:12+02:00 Vertical motion determined using satellite altimetry and tide gauges Kuo, Chung-Yen Shuin, C. K. Braun, Alexander Cheng, Kai-Chien Yi, Yuchan Department of Geomatics 2008-04 118 bytes application/octet-stream http://ir.lib.ncku.edu.tw/handle/987654321/85625 Eng en_US eng © Chinese Geoscience Union Terrestrial, Atmospheric and Oceanic Sciences, Vol. 19, No. 1-2, pp. 21-35 vertical motion tide gauge altimeter article 2008 ftchengkunguniv 2016-05-22T06:54:44Z A robust method to estimate vertical crustal motions by combining geocentric sea level measurements from decadal (1992 - 2003) TOPEX/POSEIDON satellite altimetry and long-term (> 40 years) relative sea level records from tide gauges using a novel Gauss-Markov stochastic adjustment model is presented. These results represent an improvement over a prior study (Kuo et al. 2004) in Fennoscandia, where the observed vertical motions are primarily attributed to the incomplete Glacial Isostatic Adjustment (GIA) in the region since the Last Glacial Maximum (LGM). The stochastic adjustment algorithm and results include a fully-populated a priori covariance matrix. The algorithm was extended to estimate vertical motion at tide gauge locations near open seas and around semi-enclosed seas and lakes. Estimation of nonlinear vertical motions, which could result from co- and postseismic deformations, has also been incorporated. The estimated uncertainties for the vertical motion solutions in coastal regions of the Baltic Sea and around the Great Lakes are in general < 0.5 mm yr(-1), which is a significant improvement over existing studies. In the Baltic Sea, the comparisons of the vertical motion solution with 10 collocated GPS radial rates and with the BIFROST GIA model show differences of 0.2 +/- 0.9 and 1.6 +/- 1.8 mm yr(-1), respectively. For the Great Lakes region, the comparisons with the ICE-3G model and with the relative vertical motion estimated using tide gauges only (Mainville and Craymer 2005) show differences of -0.2 +/- 0.6 and -0.1 +/- 0.5 mm yr(-1), respectively. The Alaskan vertical motion solutions (linear and nonlinear models) have an estimated uncertainty of similar to 1.2 - 1.6 min yr(-1), which agree qualitatively with GPS velocity and tide gauge-only solutions (Larsen et al. 2003). This innovative technique could potentially provide improved estimates of the vertical motion globally where long-term tide gauge records exist. Article in Journal/Newspaper Fennoscandia National Cheng Kung University: NCKU Institutional Repository |
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National Cheng Kung University: NCKU Institutional Repository |
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ftchengkunguniv |
language |
English |
topic |
vertical motion tide gauge altimeter |
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vertical motion tide gauge altimeter Kuo, Chung-Yen Shuin, C. K. Braun, Alexander Cheng, Kai-Chien Yi, Yuchan Vertical motion determined using satellite altimetry and tide gauges |
topic_facet |
vertical motion tide gauge altimeter |
description |
A robust method to estimate vertical crustal motions by combining geocentric sea level measurements from decadal (1992 - 2003) TOPEX/POSEIDON satellite altimetry and long-term (> 40 years) relative sea level records from tide gauges using a novel Gauss-Markov stochastic adjustment model is presented. These results represent an improvement over a prior study (Kuo et al. 2004) in Fennoscandia, where the observed vertical motions are primarily attributed to the incomplete Glacial Isostatic Adjustment (GIA) in the region since the Last Glacial Maximum (LGM). The stochastic adjustment algorithm and results include a fully-populated a priori covariance matrix. The algorithm was extended to estimate vertical motion at tide gauge locations near open seas and around semi-enclosed seas and lakes. Estimation of nonlinear vertical motions, which could result from co- and postseismic deformations, has also been incorporated. The estimated uncertainties for the vertical motion solutions in coastal regions of the Baltic Sea and around the Great Lakes are in general < 0.5 mm yr(-1), which is a significant improvement over existing studies. In the Baltic Sea, the comparisons of the vertical motion solution with 10 collocated GPS radial rates and with the BIFROST GIA model show differences of 0.2 +/- 0.9 and 1.6 +/- 1.8 mm yr(-1), respectively. For the Great Lakes region, the comparisons with the ICE-3G model and with the relative vertical motion estimated using tide gauges only (Mainville and Craymer 2005) show differences of -0.2 +/- 0.6 and -0.1 +/- 0.5 mm yr(-1), respectively. The Alaskan vertical motion solutions (linear and nonlinear models) have an estimated uncertainty of similar to 1.2 - 1.6 min yr(-1), which agree qualitatively with GPS velocity and tide gauge-only solutions (Larsen et al. 2003). This innovative technique could potentially provide improved estimates of the vertical motion globally where long-term tide gauge records exist. |
author2 |
Department of Geomatics |
format |
Article in Journal/Newspaper |
author |
Kuo, Chung-Yen Shuin, C. K. Braun, Alexander Cheng, Kai-Chien Yi, Yuchan |
author_facet |
Kuo, Chung-Yen Shuin, C. K. Braun, Alexander Cheng, Kai-Chien Yi, Yuchan |
author_sort |
Kuo, Chung-Yen |
title |
Vertical motion determined using satellite altimetry and tide gauges |
title_short |
Vertical motion determined using satellite altimetry and tide gauges |
title_full |
Vertical motion determined using satellite altimetry and tide gauges |
title_fullStr |
Vertical motion determined using satellite altimetry and tide gauges |
title_full_unstemmed |
Vertical motion determined using satellite altimetry and tide gauges |
title_sort |
vertical motion determined using satellite altimetry and tide gauges |
publisher |
© Chinese Geoscience Union |
publishDate |
2008 |
url |
http://ir.lib.ncku.edu.tw/handle/987654321/85625 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_relation |
Terrestrial, Atmospheric and Oceanic Sciences, Vol. 19, No. 1-2, pp. 21-35 |
_version_ |
1765997457025531904 |