Revealing the surface deformation induced by deep CO2 injection in vegetated/agricultural areas: The combination of corner-reflectors, reservoir simulations and spatio-temporal statistics

Rohmer, Jérémy; Loschetter, Annick; Raucoules, Daniel; Michele, Marcello de; Raffard, D.; Gallo, Yann Le

doi:10.1016/j.enggeo.2015.08.005

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…Examples of such projects include ESA-Terrafirma (2003 -2012) (Adam et al, 2009), EU-FP7-Subcoast (2010 -2013) (Gruijters & van der Krogt, 2013), EU-FP7-PanGeo (2011 -2014) (Capes, 2012) and EU-FP7-PROTHEGO (2015 -2018) (Themistocleous et al, 2016). Satellite-based interferometric synthetic aperture radar (InSAR) has played a central role in all of these projects as it is capable of measuring and monitoring a wide range of geohazards including landslides (Bayer et al, 2017), tectonics (Colesanti et al, 2003) and volcanology (Hooper et al, 2004), in addition to ground motion associated with anthropogenic activity such as oil and gas operations (Castelletto et al, 2013), carbon capture and storage (Rohmer et al, 2015), mining (Gee et al, 2017), civil engineering works (Marshall et al, 2018) and groundwater abstraction (Boni et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

National geohazards mapping in Europe: Interferometric analysis of the Netherlands

Gee

Sowter

Grebby

et al. 2019

Engineering Geology

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The launch of Copernicus, the largest Earth Observation program to date, is significant due to the regular, reliable and freely accessible data to support space-based geodetic monitoring of physical phenomena that can result in natural hazards. In this study, wide area interferometric synthetic aperture radar (InSAR) capability is demonstrated by processing 435 Copernicus Sentinel-1 C-Band SAR images (May 2015 -May 2017) using the Intermittent Small Baseline Subset (ISBAS) method to produce a wide-area-map (WAM) covering 53,000 km 2 of the Netherlands, Belgium and Germany. The ISBAS-WAM contains over 19 million measurements, achieving a ground coverage of 94%. The retrieval of measurements over soft surfaces (i.e. agricultural fields, forests and wetlands) was crucial due the dominance of non-urban land cover. A statistical analysis of the velocities reveals that intermittently coherent measurements in rural areas can provide reliable, additional deformation information with a very high degree of confidence (5σ), which spatially correlates to known deformation features associated with compressible soils, infrastructure settlement, peat oxidation, gas production, salt mining and underground and opencast mining. The spatial distribution of deformations concurs with independent data sources, such as previous persistent scatterer interferometry (PSI) deformation maps, models of subsidence and settlement susceptibility, and quantitatively with GPS measurements over the Groningen gas field.Remotely derived deformation products, with near complete spatial coverage, provide a powerful screening tool for mitigation and remediation of geological and geotechnical issues to help in the protection of assets, property and life. The ISBAS-WAM demonstrates that routine generation of such products on a continental scale is now theoretically achievable, given the establishment of the Copernicus programme and the development of state-of-the-art InSAR methods, such as ISBAS.

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Section: Introductionmentioning

confidence: 99%

National geohazards mapping in Europe: Interferometric analysis of the Netherlands

Gee

Sowter

Grebby

et al. 2019

Engineering Geology

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“…These study results match better with CR9's velocity results than CR8's, confirming the assumption of a more accurate estimate in descending path than in ascending path. The maximum offset is indeed obtained on a short time interval in ascending images (2017-10-01/2017- [10][11][12][13][14][15][16][17][18][19]. The pairs with the smallest velocity uncertainty are obtained with CR9 (2017-09-30/2018-07-09 and 2017-11-17/2018-07-15), since they represent the longest time intervals.…”

Section: Dates Time Interval (D) Velocity (Cm/d) Direction Differencementioning

confidence: 89%

Integration of Corner Reflectors for the Monitoring of Mountain Glacier Areas with Sentinel-1 Time Series

et al. 2019

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Glacier flow and slope instabilities in Alpine mountain areas represent a hazard issue. Sentinel-1 satellites provide regular Synthetic Aperture Radar (SAR) acquisitions that are potentially useful to monitor these areas, but they can be affected by temporal decorrelation due to rapid changes in the surface. The application of interferometric synthetic aperture radar (InSAR) therefore seems difficult due to loss of coherence. On the other hand, Corner Reflectors (CR) can be used as coherent targets in SAR images for accurate displacement measurement thanks to their strong backscattering property and temporal stability. The use of CRs in multi-temporal InSAR analysis in Alpine mountain areas can thus be beneficial. In this study, we present a comparison between triangular and rectangular CRs, based on Radar Cross Section (RCS) measurements in an anechoic chamber and on long-term experiments over the Argentière glacier and the surrounding slopes and moraine. The visibility in both summer and winter of 10 CRs installed on the test site was investigated. As this area is exposed to heavy precipitation including snow falls, two perforated CRs were tested. The amplitude stability and the phase error of each CR were estimated. A precise tracking of two CRs installed at the glacier surface was also able to measure the displacement of the Argentière glacier, giving results close to previous GPS measurements. Furthermore, a Persistent Scatterer Interferometry (PSI) study was conducted, using the most stable CR as reference point to estimate slope instabilities, which led to the identification of an area corresponding to a tectonic fault called “Faille de l’angle”. The precise absolute locations of the CRs were successfully estimated and PS heights were compared with a LiDAR-based (Light Detection And Ranging) digital elevation model (DEM) and GPS measurements.

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“…Sobol is a widely applied global sensitivity analysis method. Several scholars have already employed this method in various fields such as geotechnical engineering, agriculture, materials science, and environmental studies [25][26][27][28][29]. The impact proportion of each factor on the final vacuum degree can be calculated using Sobol.…”

Section: Global Sensitivity Analysis Methodsmentioning

confidence: 99%

Analysis of Factors Affecting Vacuum Formation and Drainage in the Siphon-Vacuum Drainage Method for Marine Reclamation

Shu,

Wang,

Chen

et al. 2024

JMSE

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Traditional drainage methods for marine reclamation typically consume large amounts of energy and have a negative environmental impact. The siphon-vacuum drainage method (SVD) automatically forms a vacuum and drains using less energy. It has significant potential for research and application. In this study, a theoretical model is used to calculate the vacuum formation process and drainage rate. Qualitative analysis and global sensitivity analysis were conducted to investigate the effect of various factors in the SVD on vacuum formation and drainage. The qualitative analysis suggests that modifying the length and diameter of the siphon pipe and the thickness of the sealing soil column to increase the siphon rate can improve the vacuum degree and drainage efficiency. Sobol global sensitivity analysis reveals that the sealing soil column thickness is the main factor affecting the vacuum, with a first-order sensitivity index accounting for up to 79.48%. The impact of cylinder diameter and the local resistance coefficient (0.43%) can be almost neglected. A fitting equation for estimating the maximum achievable vacuum is provided. Calculations show that the vacuum formed by the SVD can reach over 80 kPa. This work can help optimize SVD design and advance environmentally friendly marine reclamation projects.

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Revealing the surface deformation induced by deep CO2 injection in vegetated/agricultural areas: The combination of corner-reflectors, reservoir simulations and spatio-temporal statistics

Cited by 7 publications

References 21 publications

National geohazards mapping in Europe: Interferometric analysis of the Netherlands

National geohazards mapping in Europe: Interferometric analysis of the Netherlands

Integration of Corner Reflectors for the Monitoring of Mountain Glacier Areas with Sentinel-1 Time Series

Analysis of Factors Affecting Vacuum Formation and Drainage in the Siphon-Vacuum Drainage Method for Marine Reclamation

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