Evaluation of the SBAS InSAR Service of the European Space Agency's Geohazard Exploitation Platform (GEP)

The analysis of remote sensing data to assess geohazards is being improved by web-based platforms and collaborative projects, such as the Geohazard Exploitation Platform (GEP) of the European Space Agency (ESA). This paper presents the evaluation of a surface velocity map that is generated by this platform. The map was produced through an unsupervised Multi-temporal InSAR (MTI) analysis applying the Parallel-SBAS (P-SBAS) algorithm to 25 ENVISAT satellite images from the South of Spain that were acquired between 2003 and 2008. This analysis was carried out using a service implemented in the GEP called “SBAS InSAR”. Thanks to the map that was generated by the SBAS InSAR service, we identified processes not documented so far; provided new monitoring data in places affected by known ground instabilities; defined the area affected by these instabilities; and, studied a case where GEP could have been able to help in the forecast of a slope movement reactivation. This amply demonstrates the reliability and usefulness of the GEP, and shows how web-based platforms may enhance the capacity to identify, monitor, and assess hazards that are associated to geological processes.

[1]  Fabiana Calò,et al.  DInSAR-Based Detection of Land Subsidence and Correlation with Groundwater Depletion in Konya Plain, Turkey , 2017, Remote. Sens..

[2]  Antonio Pepe,et al.  Analysis of Ground Deformation Detected Using the SBAS-DInSAR Technique in Umbria, Central Italy , 2009 .

[3]  Andrew Hooper,et al.  A multi‐temporal InSAR method incorporating both persistent scatterer and small baseline approaches , 2008 .

[4]  Michele Crosetto,et al.  Spaceborne Differential SAR Interferometry: Data Analysis Tools for Deformation Measurement , 2011, Remote. Sens..

[5]  Michele Manunta,et al.  SBAS-DInSAR Parallel Processing for Deformation Time-Series Computation , 2014, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing.

[6]  Davide Notti,et al.  Landslide Activity Maps Generation by Means of Persistent Scatterer Interferometry , 2013, Remote. Sens..

[7]  Fabiana Calò,et al.  Exploitation of Large Archives of ERS and ENVISAT C-Band SAR Data to Characterize Ground Deformations , 2013, Remote. Sens..

[8]  Gianfranco Fornaro,et al.  A new algorithm for surface deformation monitoring based on small baseline differential SAR interferograms , 2002, IEEE Trans. Geosci. Remote. Sens..

[9]  C. Galdeano,et al.  The Zafarraya Polje (Betic Cordillera, Granada, Spain), a basin open by lateral displacement and bending , 2013 .

[10]  J. Galve,et al.  Railway deformation detected by DInSAR over active sinkholes in the Ebro Valley evaporite karst, Spain , 2015 .

[11]  Matteo Albano,et al.  An innovative procedure for monitoring the change in soil seismic response by InSAR data: application to the Mexico City subsidence , 2016, Int. J. Appl. Earth Obs. Geoinformation.

[12]  Stefano Salvi,et al.  Sinkhole precursors along the Dead Sea, Israel, revealed by SAR interferometry , 2013 .

[13]  Marco Bianchi,et al.  Geological Interpretation of PSInSAR Data at Regional Scale , 2008, Sensors.

[14]  M. Crosetto,et al.  Two Radar Interferometric Approaches to Monitor Slow and Fast Land Deformation , 2007 .

[15]  Gerardo Herrera,et al.  Combination of Conventional and Advanced DInSAR to Monitor Very Fast Mining Subsidence with TerraSAR-X Data: Bytom City (Poland) , 2015, Remote. Sens..

[16]  Damien Closson,et al.  Dikes Stability Monitoring Versus Sinkholes and Subsidence, Dead Sea Region, Jordan , 2014 .

[17]  Simone Fiaschi,et al.  The complex karst dynamics of the Lisan Peninsula revealed by 25 years of DInSAR observations. Dead Sea, Jordan , 2017 .

[18]  R. S. J. Sparks,et al.  Global link between deformation and volcanic eruption quantified by satellite imagery , 2014, Nature Communications.

[19]  K. Feigl,et al.  The displacement field of the Landers earthquake mapped by radar interferometry , 1993, Nature.

[20]  Jorge Pedro Galve,et al.  Investigating gravitational grabens related to lateral spreading and evaporite dissolution subsidence by means of detailed mapping, trenching, and electrical resistivity tomography (Spanish Pyrenees) , 2012 .

[21]  Davide Notti,et al.  Lithological control of land subsidence induced by groundwater withdrawal in new urban AREAS (Granada Basin, SE Spain). Multiband DInSAR monitoring , 2016 .

[22]  Davide Notti,et al.  The combined use of PSInSAR and UAV photogrammetry techniques for the analysis of the kinematics of a coastal landslide affecting an urban area (SE Spain) , 2017, Landslides.

[23]  Michele Crosetto,et al.  First delimitation of areas affected by ground deformations in the Guadalfeo River Valley and Granada metropolitan area (Spain) using the DInSAR technique , 2009 .

[24]  Ramon F. Hanssen,et al.  Land Subsidence Monitoring In The Southern Spanish Coast Using Satellite Radar Interferometry , 2012 .

[25]  Damien Closson,et al.  Space-borne radar interferometric mapping of precursory deformations of a dyke collapse, Dead Sea area, Jordan , 2003 .

[26]  Antonio Pepe,et al.  Surface displacements associated with the L'Aquila 2009 Mw 6.3 earthquake (central Italy): New evidence from SBAS‐DInSAR time series analysis , 2010 .

[27]  R. Tomás,et al.  Radar interferometry techniques for the study of ground subsidence phenomena: a review of practical issues through cases in Spain , 2013, Environmental Earth Sciences.

[28]  Davide Notti,et al.  Human-induced coastal landslide reactivation. Monitoring by PSInSAR techniques and urban damage survey (SE Spain) , 2015, Landslides.

[29]  Núria Devanthéry,et al.  An Approach to Persistent Scatterer Interferometry , 2014, Remote. Sens..

[30]  Michele Manunta,et al.  An On-Demand Web Tool for the Unsupervised Retrieval of Earth's Surface Deformation from SAR Data: The P-SBAS Service within the ESA G-POD Environment , 2015, Remote. Sens..

[31]  J. Chacón,et al.  Movimientos de ladera en la Costa de Almuñécar y su entorno , 2016 .

[32]  James P. McCalpin,et al.  Differentiating between gravitational and tectonic faults by means of geomorphological mapping, trenching and geophysical surveys. The case of the Zenzano Fault (Iberian Chain, N Spain) , 2013 .

[33]  Jane Palmer,et al.  Creeping earth could hold secret to deadly landslides , 2017, Nature.

[34]  Virginia Gewin.  Turning point: Aerial archaeologist , 2016 .

[35]  Fabio Bovenga,et al.  Investigating landslides and unstable slopes with satellite Multi Temporal Interferometry: Current issues and future perspectives , 2014 .

[36]  Ramon F. Hanssen,et al.  Deformation monitoring in Zafarraya Fault and Sierra Tejeda Antiform (Betic Cordillera, Spain) using satellite radar interferometry , 2015 .

[37]  Antonio Pepe,et al.  Unsupervised parallel SBAS-DInSAR chain for massive and systematic Sentinel-1 data processing , 2016, 2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS).

[38]  Jorge Pedro Galve,et al.  Assessing sinkhole activity in the Ebro Valley mantled evaporite karst using advanced DInSAR , 2015 .

[39]  Gerardo Herrera,et al.  Interpolation of GPS and Geological Data Using InSAR Deformation Maps: Method and Application to Land Subsidence in the Alto Guadalentín Aquifer (SE Spain) , 2016, Remote. Sens..

[40]  José Chacón Montero,et al.  Los Movimientos De Ladera En El Sector De Colmenar (Málaga) , 1991 .

[41]  M. Ramondini,et al.  Comparison of water-level, extensometric, DInSAR and simulation data for quantification of subsidence in Murcia City (SE Spain) , 2016, Hydrogeology Journal.

[42]  Ping Lu,et al.  Investigating Spatial Patterns of Persistent Scatterer Interferometry Point Targets and Landslide Occurrences in the Arno River Basin , 2014, Remote. Sens..

[43]  Ramon F. Hanssen,et al.  PS-InSAR processing methodologies in the detection of field surface deformation—Study of the Granada basin (Central Betic Cordilleras, southern Spain) , 2010 .

[44]  Davide Notti,et al.  Multi-sensor advanced DInSAR monitoring of very slow landslides: The Tena Valley case study (Central Spanish Pyrenees) , 2013 .

[45]  Jordi J. Mallorqui,et al.  A deep seated compound rotational rock slide and rock spread in SE Spain: Structural control and DInSAR monitoring , 2011 .

[46]  Robert M. Nadeau,et al.  Potential for larger earthquakes in the East San Francisco Bay Area due to the direct connection between the Hayward and Calaveras Faults , 2015 .

[47]  M. Manunta,et al.  DInSAR measurements of ground deformation by sinkholes, mining subsidence, and landslides, Ebro River, Spain , 2009 .

[48]  Davide Notti,et al.  Multiband PSInSAR and long-period monitoring of land subsidence in a strategic detrital aquifer (Vega de Granada, SE Spain): An approach to support management decisions , 2017 .

[49]  Núria Devanthéry,et al.  Persistent Scatterer Interferometry: A review , 2016 .

[50]  Eugenio Sansosti,et al.  Anatomy of an unstable volcano from InSAR: Multiple processes affecting flank instability at Mt. Etna, 1994–2008 , 2010 .