Mexico City subsidence observed with persistent scatterer InSAR

被引：273

作者：

Osmanoglu, Batuhan ^{[1
]}

Dixon, Timothy H. ^{[1
]}

Wdowinski, Shimon ^{[1
]}

Cabral-Cano, Enrique ^{[2
]}

Jiang, Yan ^{[1
]}

机构：

[1] Univ Miami, Div Marine Geol & Geophys, Miami, FL 33149 USA

[2] Univ Nacl Autonoma Mexico, Inst Geofis, Dept Geomagnetismo & Explorac, Mexico City 04510, DF, Mexico

来源：

INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION | 2011年 / 13卷 / 01期

关键词：

Subsidence; Interferometry; GPS; Mexico City; Synthetic aperture radar (SAR); interferometry; Persistent scatterer interferometry (PSI); LAND SUBSIDENCE; INTERFEROMETRY;

D O I：

10.1016/j.jag.2010.05.009

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

We analyzed 23 satellite SAR (synthetic aperture radar) scenes using Persistent Scatter Interferometry (PSI) to study subsidence in Mexico City associated with groundwater withdrawal. The data were acquired by the Envisat ASAR system between January 2004 and July 2006. The spatial pattern of subsidence and the maximum subsidence rate (300 mm/year) are similar to earlier studies. Comparison to independent GPS data indicates RMS agreement between the two techniques of 6.9 mm/year, about the level expected based on joint data uncertainty. Significant annual variation in the GPS vertical data is not observed, suggesting minimal aquifer recharge during the rainy season, and justifying a simple linear model of phase variation through time for the PSI analysis. (C) 2010 Elsevier BM. All rights reserved.

引用

页码：1 / 12

页数：12

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