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  • 1
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    A Multidisciplinary Approach to Earthquake Research: Implementation of a Geochemical Geographic Information System for the Gargano Site, Southern Italy (2007)
    Kluver
    Details
    Publication Date: 2020-11-26
    Description: A priority task for correct environmental planning is to evaluate Natural Hazards, especially in highly populated areas. In particular, thorough investigations based on different Earth Science techniques must be addressed for the Seismic Hazard Assessment (SHA) in tectonically active areas. Not only the management but also the multidisciplinary analysis of all the SHA-related data sets is best performed using a Geographic Information System. In this paper we show how a researchoriented GIS is built and used in a practical case. The Geochemical Geographic Information System (G2IS) was developed and applied to the Gargano promontory (southern Italy) in the framework of an EC research project, the Geochemical Seismic Zonation (GSZ) Project. This multidisciplinary – multiscaling powerful tool is described in its structure, updating procedures and manipulation techniques. Preliminary results are presented on the detection of geochemically active fault zones and their correlation with remote sensing data and other evidences of seismogenic structures.
    Description: Published
    Description: 255-278
    Description: JCR Journal
    Description: reserved
    Keywords: Geochemistry ; Gargano ; 05. General::05.02. Data dissemination::05.02.01. Geochemical data
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Interseismic Strain Accumulation in the Gargano Promontory (Central Italy) (2007)
    Details
    Publication Date: 2017-04-04
    Description: The Gargano promontory is a ENE-WSW topographical and structural high located at the inner border of the Apulia foreland. The post-Miocene tectonics of the Gargano area is characterized mainly by E-W strike-slip and NW-SE normal faults, whose present state of activity is debated, since there have been no large earthquakes in the instrumental era. Still, the Gargano is well known as a seismically active zone: destructive earthquakes (and even a tsunami) have occurred in historical times, with felt effects up to XI MCS, although the exact location of the seismogenic sources is uncertain. The level of background seismicity is low, with a maximum magnitude Mw=5.4 occurring in the central part of the promontory. We have investigated the surface deformation in the area using the PS-InSAR processing technique. We have analysed 83 descending, and 31 ascending images, obtaining good coherence over about 200.000 Permanent Scatterers. We have modeled the ground velocity field using elastic dislocation models and a non-linear inversion scheme. The modeling preliminary results suggest that the area is presently accumulating strain along the E-W Mattinata fault, with locking depths in the range 10 to 15 km
    Description: Published
    Description: Vienna, Austria
    Description: open
    Keywords: SAR ; Inteferometry ; Permanent Scatterers ; Gargano ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations ; 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring ; 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy ; 04. Solid Earth::04.03. Geodesy::04.03.08. Theory and Models ; 04. Solid Earth::04.03. Geodesy::04.03.09. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
    Format: 3064034 bytes
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  • 3
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    Land subsidence, Ground Fissures and Buried Faults: InSAR Monitoring of Ciudad Guzmán (Jalisco, Mexico) (2015)
    Molecular Diversity Preservation International
    Details
    Publication Date: 2017-04-04
    Description: We study land subsidence processes and the associated ground fissuring, affecting an active graben filled by thick unconsolidated deposits by means of InSAR techniques and fieldwork. On 21 September 2012, Ciudad Guzmán (Jalisco, Mexico) was struck by ground fissures of about 1.5 km of length, causing the deformation of the roads and the propagation of fissures in adjacent buildings. The field survey showed that fissures alignment is coincident with the escarpments produced on 19 September 1985, when a strong earthquake with magnitude 8.1 struck central Mexico. In order to detect and map the spatio-temporal features of the processes that led to the 2012 ground fissures, we applied InSAR multitemporal techniques to process ENVISAT-ASAR and RADARSAT-2 satellite SAR images acquired between 2003 and 2012. We detect up to 20 mm/year of subsidence of the northwestern part of Ciudad Guzmán. These incremental movements are consistent with the ground fissures observed in 2012. Based on interferometric results, field data and 2D numerical model, we suggest that ground deformations and fissuring are due to the presence of areal subsidence correlated with variable sediment thickness and differential compaction, partly driven by the exploitation of the aquifers and controlled by the distribution and position of buried faults.
    Description: Published
    Description: 8610-8630
    Description: 6A. Monitoraggio ambientale, sicurezza e territorio
    Description: JCR Journal
    Description: open
    Keywords: InSAR ; ground subsidence ; buried faults ; ground fissuring ; 04. Solid Earth::04.01. Earth Interior::04.01.02. Geological and geophysical evidences of deep processes
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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