The displacement field of the Landers earthquake mapped by radar interferometry

Massonnet, D.; Rossi, M.; Carmona, César; Adragna, F.; Peltzer, G.; Feigl, K. L.; Rabaute, Thierry

doi:10.1038/364138a0

Cited by 1,881 publications

(918 citation statements)

References 19 publications

Supporting

Mentioning

901

Contrasting

Unclassified

Order By: Relevance

“…InSAR was first used to measure the motion in earthquakes in the early 1990s (Massonnet et al, 1993), and by the early 2000s it was possible to combine multiple interferograms to measure tectonic strain (Wright et al, 2001, Peltzer et al, 2001). The methodologies have now become much more routine, and many key observations of the time-dependent deformation that occurs during the earthquake cycle have been made using InSAR (Wright et al, 2013).…”

Section: Seismic Hazard In the Continentsmentioning

confidence: 99%

The earthquake deformation cycle

Wright

2016

A&G

View full text Add to dashboard Cite

Abstract/Intro Paragraph.Earthquakes seem impossible to predict, yet they are associated with the slow deformation of tectonic plates. In the 2015 Bullerwell lecture, Tim Wright reviews observations of time-dependent surface deformation in fault zones, and uses these observations to place constraints on feasible models of the earthquake deformation cycle. The results have implications for the mechanics of fault zones and the strength of the continental lithosphere, and are critical if we are to use short-term geodetic observations as tool for assessing seismic hazard.

show abstract

Section: Seismic Hazard In the Continentsmentioning

confidence: 99%

The earthquake deformation cycle

Wright

2016

A&G

View full text Add to dashboard Cite

show abstract

“…The images cover about~28,800 km 2 (~180 km by~160 km) with the slant range pixel spacing of 2.3 m and the azimuth range pixel spacing of 13.4 m. LOS has the mean incidence angle of 39.2 • and the ground track of satellite is tilted~9.6 • with respect to the N-S direction. In addition, the Digital Elevation Model (DEM) from Shuttle Radar Topography Mission (SRTM) [72] with~30 m spatial resolution is acquired to separate the phase contribution of the topography in the interferograms [73]. Moreover, the precise satellite orbit data for Sentinel-1 images is employed to guarantee the accuracy of satellite's positions and to reduce the interferogram baselines estimation error.…”

Section: Study Area and Data Coveragementioning

confidence: 99%

Deriving 3-D Time-Series Ground Deformations Induced by Underground Fluid Flows with InSAR: Case Study of Sebei Gas Fields, China

Liu

Sun

et al. 2017

Remote Sensing

View full text Add to dashboard Cite

Multi-temporal Interferometric Synthetic Aperture Radar (MT-InSAR) technique has proven to be a powerful tool for the monitoring of time-series ground deformations along the line-of-sight (LOS) direction. However, the one-dimensional (1-D) measurements cannot provide comprehensive information for interpreting the related geo-hazards. Recently, a novel method has been proposed to map the three-dimensional (3-D) deformation associated with underground fluid flows based on single-track InSAR LOS measurements and the deformation modeling associated with the Green's function. In this study, the method is extended in temporal domain by exploiting the MT-InSAR measurements, and applied for the first time to investigate the 3-D time series deformation over Sebei gas field in Qinghai, Northwest China with 37 Sentinel-1 images acquired during October 2014-July 2017. The estimated 3-D time series deformations provide a more complete view of ongoing deformation processes as compared to the 1-D time series deformations or the 3-D deformation velocities, which is of great importance for assessing the possible geohazards. In addition, the extended method allows for the retrieval of time series of fluid volume changes due to the gas extraction in the Sebei field, which agrees well with those from the PetroChina Qinghai Oilfield Company Yearbooks (PQOCYs). This provides a new way to study the variations of subsurface fluids at unprecedented resolution.

show abstract

“…Within this framework, the well-established remote sensing technique, known as Differential Synthetic Aperture Radar (SAR) Interferometry (DInSAR) [22][23][24][25], can play a strategic role in the Over the past few years, the coastal area of Lingang New City, which extends for about 300 km 2 (45% of which was reclaimed from intertidal wetlands), has been subjected to broad modifications in its geomorphology and urban environment. Due to land reclamation, two main inherent problems have arisen: (i) liquefaction; and (ii) ground settlements, both of which are responsible for serious failures and damage to infrastructures of reclaimed foundations [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Within this framework, the well-established remote sensing technique, known as Differential Synthetic Aperture Radar (SAR) Interferometry (DInSAR) [22][23][24][25], can play a strategic role in the detection and monitoring of ongoing surface deformation signals at a large spatial scale. Over the past fifteen years, several DInSAR techniques aimed at investigating the time evolution of ground displacements have been proposed [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

The Use of C-/X-Band Time-Gapped SAR Data and Geotechnical Models for the Study of Shanghai’s Ocean-Reclaimed Lands through the SBAS-DInSAR Technique

et al. 2016

View full text Add to dashboard Cite

Abstract:In this work, we investigate the temporal evolution of ground deformation affecting the ocean-reclaimed lands of the Shanghai (China) megacity, from 2007 to 2016, by applying the Differential Synthetic Aperture Radar Interferometry (DInSAR) technique known as the Small BAseline Subset (SBAS) algorithm. For the analysis, we exploited two sets of non-time-overlapped synthetic aperture radar (SAR) data, acquired from 2007 to 2010, by the ASAR/ENVISAT (C-band) instrument, and from 2014 to 2016 by the X-band COSMO-SkyMed (CSK) sensors. The long time gap (of about three years) existing between the available C-and X-band datasets made the generation of unique displacement time-series more difficult. Nonetheless, this problem was successfully solved by benefiting from knowledge of time-dependent geotechnical models, which describe the temporal evolution of the expected deformation affecting Shanghai's ocean-reclaimed platforms. The combined ENVISAT/CSK (vertical) deformation time-series were analyzed to gain insight into the future evolution of displacement signals within the investigated area. As an outcome, we find that ocean-reclaimed lands in Shanghai experienced, between 2007 and 2016, average cumulative (vertical) displacements extending down to 25 centimeters.

show abstract

The displacement field of the Landers earthquake mapped by radar interferometry

Cited by 1,881 publications

References 19 publications

The earthquake deformation cycle

The earthquake deformation cycle

Deriving 3-D Time-Series Ground Deformations Induced by Underground Fluid Flows with InSAR: Case Study of Sebei Gas Fields, China

The Use of C-/X-Band Time-Gapped SAR Data and Geotechnical Models for the Study of Shanghai’s Ocean-Reclaimed Lands through the SBAS-DInSAR Technique

Contact Info

Product

Resources

About