The application of shallow seismic techniques in the study of active faults: The Atalanti normal fault, central Greece

Karastathis, V.; Ganas, Athanassios; Makris, J.; Papoulia, J.; Dafnis, Pavlos; Gerolymatou, Eleni; Δρακάτος, Γ.

doi:10.1016/j.jappgeo.2006.11.004

Cited by 34 publications

(18 citation statements)

References 22 publications

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“…Seismic reflection method focuses on the obvious elastic difference between two strata. The difference between seismic reflection method and other geophysical exploration methods is that seismic reflection method has the characteristics of high exploration accuracy, high horizontal and vertical resolutions, and abundant acquisition information [43][44][45][46][47][48]. To find a fault by using seismic reflection method, the two sides of the fault in the same layer of reflection wave arrival time difference are used as the basis of judgment.…”

Section: Seismic Reflection Methodsmentioning

confidence: 99%

Application of combined electrical resistivity tomography and seismic reflection method to explore hidden active faults in Pingwu, Sichuan, China

Meng

Zhang

et al. 2020

Open Geosciences

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AbstractPingwu County, which is located at the northern end of the Longmenshan fault structural belt, has an active regional geological structure. For a long time, the Longmenshan fault tectonic belt has become intensely active with frequent earthquakes. According to the existing geological data, the Pingwu–Qingchuan fault passes through the urban area of Pingwu. However, because of the great changes in the original landform of Pingwu caused by the construction activities in this urban area, a precise judgment of the location of the Pingwu–Qingchuan fault according to the new landform characteristics is difficult. Here, the seismic reflection method, electrical resistivity tomography (ERT), and drilling method were used to determine the accurate location of the buried active faults in Pingwu County. The seismic reflection method and ERT are used to determine the location of faults, the thickness of overlying strata of the fault, and the basic characteristics of faults. The drilling data can be used to divide the bedrock lithology and confirm the geophysical results. The geological model of the faults can be constructed by 3D inversion of ERT, and the structural characteristics of the faults can be viewed intuitively. The results of this study can provide a basis for earthquake prevention and construction work in Pingwu. The finding also shows that seismic reflection method and ERT can effectively explore buried active faults in urban areas, where many sources of interferences may exist.

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Section: Seismic Reflection Methodsmentioning

confidence: 99%

Application of combined electrical resistivity tomography and seismic reflection method to explore hidden active faults in Pingwu, Sichuan, China

Meng

Zhang

et al. 2020

Open Geosciences

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“…can provide useful information and constraints for characterizing an active fault (e.g. Caputo et al, 2003;Oliveto et al, 2004;Karastathis et al, 2007).…”

Section: Methodsmentioning

confidence: 99%

The Greek Catalogue of Active Faults and Database of Seismogenic Sources

et al. 2017

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The new reasearch project to create the Greek Catalogue of Active Faults and Database of Seismogenic Sources has three major goals: (i) the systematic collection of all available information concerning neotectonic, active and capable faults as well as broader seismogenic volumes within the Aegean Region; the search will be mainly based on geological and geophysical data; (ii) the quantification of the principal seismotectonic parameters of the different sources and the associated degree of uncertainty; (iii) to supply an integrated view of potentially damaging seismogenic sources for a better assessment of the Seismic Hazard of Greece. The informatic framework of the database follows that used for the Italian Database of Individual Seismogenic Sources (DISS). In this paper we present the architecture of the new Database of Active faults of the broader Aegean Area relative to Greece, the progress made up to present and the following activities yet to be accomplished.

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“…The area itself contains a number of notable fault zones. The most important and well documented fault structure is the Atalanti fault zone (Poulimenos and Doutsos, 1996;Ganas 1998;Pantosti et al, 2001;Karastathis et al, 2007;Pavlidis et al, 2004) with a NW-SE strike. Two other notable fault zones are the Kamena Vourla fault zone and the Kallidromo fault zone, north of the Atalanti fault zone.…”

Section: Tectonicsmentioning

confidence: 99%

Improved earthquake location in the area of North Euboean Gulf after the implementation of a 3D non-linear location method in combination with a 3D velocity model.

Mouzakiotis

Karastathis

2016

geosociety

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Considerably improved hypocentral locations of the 274 earthquakes, with magnitudes between 1.5 to 4.1 Ml recorded during the period from 2009 to 2010 by the Hellenic Unified Seismographic Network (HUSN), have been obtained for the area of North Euboean Gulf after the implementation of a 3D non-linear location algorithm and a previously calculated local 3D velocity model for both P and S wavephases. To assess the effectiveness of the 3D locations we compared the results with the solutions obtained with alternative 1D velocity models such as the minimum 1D model calculated with the VELEST algorithm and the 1D model used by the National Observatory of Athens (NOA) for daily earthquake analysis. We were further ableto assess the location accuracy of each model by comparing the location results for a number of quarry blasts that occurred in the area in that period. The use of the local 3D velocity model provides considerably more accurate than the minimum 1D model which in turn provides more constrained locations from the 1D model of NOA. The epicentral locations calculated by each model are almost similar; however the depth distribution of the events varies, with depth differences of up to 12 km for some earthquakes. The results prove that accurate, local models are necessary in order to achieve more accurate locations for the events in a local area.

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The application of shallow seismic techniques in the study of active faults: The Atalanti normal fault, central Greece

Cited by 34 publications

References 22 publications

Application of combined electrical resistivity tomography and seismic reflection method to explore hidden active faults in Pingwu, Sichuan, China

Application of combined electrical resistivity tomography and seismic reflection method to explore hidden active faults in Pingwu, Sichuan, China

The Greek Catalogue of Active Faults and Database of Seismogenic Sources

Improved earthquake location in the area of North Euboean Gulf after the implementation of a 3D non-linear location method in combination with a 3D velocity model.

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