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Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China

Contemporary applications of radar altimetry include sea-level rise, ocean circulation, marine gravity, and icesheet elevation change. Unlike InSAR and GNSS, which are widely used to map surface deformation, altimetry is neither reliant on highly temporally-correlated ground features nor as limited...

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Autores principales: Hwang, Cheinway, Yang, Yuande, Kao, Ricky, Han, Jiancheng, Shum, C. K., Galloway, Devin L., Sneed, Michelle, Hung, Wei-Chia, Cheng, Yung-Sheng, Li, Fei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4914853/
https://www.ncbi.nlm.nih.gov/pubmed/27324935
http://dx.doi.org/10.1038/srep28160
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author Hwang, Cheinway
Yang, Yuande
Kao, Ricky
Han, Jiancheng
Shum, C. K.
Galloway, Devin L.
Sneed, Michelle
Hung, Wei-Chia
Cheng, Yung-Sheng
Li, Fei
author_facet Hwang, Cheinway
Yang, Yuande
Kao, Ricky
Han, Jiancheng
Shum, C. K.
Galloway, Devin L.
Sneed, Michelle
Hung, Wei-Chia
Cheng, Yung-Sheng
Li, Fei
author_sort Hwang, Cheinway
collection PubMed
description Contemporary applications of radar altimetry include sea-level rise, ocean circulation, marine gravity, and icesheet elevation change. Unlike InSAR and GNSS, which are widely used to map surface deformation, altimetry is neither reliant on highly temporally-correlated ground features nor as limited by the available spatial coverage, and can provide long-term temporal subsidence monitoring capability. Here we use multi-mission radar altimetry with an approximately 23 year data-span to quantify land subsidence in cropland areas. Subsidence rates from TOPEX/POSEIDON, JASON-1, ENVISAT, and JASON-2 during 1992–2015 show time-varying trends with respect to displacement over time in California’s San Joaquin Valley and central Taiwan, possibly related to changes in land use, climatic conditions (drought) and regulatory measures affecting groundwater use. Near Hanford, California, subsidence rates reach 18 cm yr(−1) with a cumulative subsidence of 206 cm, which potentially could adversely affect operations of the planned California High-Speed Rail. The maximum subsidence rate in central Taiwan is 8 cm yr(−1). Radar altimetry also reveals time-varying subsidence in the North China Plain consistent with the declines of groundwater storage and existing water infrastructure detected by the Gravity Recovery And Climate Experiment (GRACE) satellites, with rates reaching 20 cm yr(−1) and cumulative subsidence as much as 155 cm.
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spelling pubmed-49148532016-06-27 Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China Hwang, Cheinway Yang, Yuande Kao, Ricky Han, Jiancheng Shum, C. K. Galloway, Devin L. Sneed, Michelle Hung, Wei-Chia Cheng, Yung-Sheng Li, Fei Sci Rep Article Contemporary applications of radar altimetry include sea-level rise, ocean circulation, marine gravity, and icesheet elevation change. Unlike InSAR and GNSS, which are widely used to map surface deformation, altimetry is neither reliant on highly temporally-correlated ground features nor as limited by the available spatial coverage, and can provide long-term temporal subsidence monitoring capability. Here we use multi-mission radar altimetry with an approximately 23 year data-span to quantify land subsidence in cropland areas. Subsidence rates from TOPEX/POSEIDON, JASON-1, ENVISAT, and JASON-2 during 1992–2015 show time-varying trends with respect to displacement over time in California’s San Joaquin Valley and central Taiwan, possibly related to changes in land use, climatic conditions (drought) and regulatory measures affecting groundwater use. Near Hanford, California, subsidence rates reach 18 cm yr(−1) with a cumulative subsidence of 206 cm, which potentially could adversely affect operations of the planned California High-Speed Rail. The maximum subsidence rate in central Taiwan is 8 cm yr(−1). Radar altimetry also reveals time-varying subsidence in the North China Plain consistent with the declines of groundwater storage and existing water infrastructure detected by the Gravity Recovery And Climate Experiment (GRACE) satellites, with rates reaching 20 cm yr(−1) and cumulative subsidence as much as 155 cm. Nature Publishing Group 2016-06-21 /pmc/articles/PMC4914853/ /pubmed/27324935 http://dx.doi.org/10.1038/srep28160 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Hwang, Cheinway
Yang, Yuande
Kao, Ricky
Han, Jiancheng
Shum, C. K.
Galloway, Devin L.
Sneed, Michelle
Hung, Wei-Chia
Cheng, Yung-Sheng
Li, Fei
Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China
title Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China
title_full Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China
title_fullStr Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China
title_full_unstemmed Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China
title_short Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China
title_sort time-varying land subsidence detected by radar altimetry: california, taiwan and north china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4914853/
https://www.ncbi.nlm.nih.gov/pubmed/27324935
http://dx.doi.org/10.1038/srep28160
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