Modelling tectonic features of the Kissamos and Paleohora areas, Western Crete (Greece): combining geological and geophysical surveys

Moisidi, Margarita; Vallianatos, Filippos; Soupios, Pantelis; Kershaw, Steve; Rust, Derek; Piscitelli, S.

doi:10.1088/1742-2132/10/2/025015

Cited by 9 publications

(12 citation statements)

References 35 publications

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“…The reader is referred to the two ERT profiles (figs. 7d and 7e, respectively), shown in Moisidi et al (2013). The ERT1 profile which was conducted west of the Basin (Fig.11) indicated:…”

Section: Discussionmentioning

confidence: 95%

“…To image the near subsurface structure and to verify the presence of fault zones electrical resistivity tomography (ERT) survey using Wenner-Schlumberger arrays were conducted in the coast northwest and northeast of Kastelli Basin (Moisidi et al 2013). Two ERTs were conducted perpendicular to the cross-sections HG and EF (Fig.11).…”

Section: Discussionmentioning

confidence: 99%

“…The width of the fault zone broadens to at least 50 m, below 20 m depth. The reader is referred to Moisidi et al (2013) for the ERT surveys For the Kastelli Basin we suggest that the aforementioned low HVSR amplitude could be related to the amplification of the vertical component likely attributed to: i) the high angle to near vertical fault zones may act as sources providing near vertical ray paths, ii) 2D/3D effects of the near subsurface (heterogeneities/irregularities/discontinuities or fault zones) structure, iii) to possible S-P conversion at the complex geological boundaries interfaces. Moreover, considering the network of near vertical fault zones we presume that the noise wave-field in addition to the local surface generated waves in the Basin contains a significant amount of P waves.…”

Section: Fig11mentioning

confidence: 99%

“…In addition, the ERT profiles have shown (Moisidi et al 2013) steeply dipping faults, variations in the resistivity at depth which occur either in horizontal stratified layers or locally along complex irregular/inclined interfaces. The steeply dipping faults may act as sources providing near vertical ray paths and in addition the inferred 2D/3D effects and the complex geological interfaces may lead to S-P and P-S conversions.…”

Section: Fig11mentioning

confidence: 99%

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Seismic site characterization of the Kastelli (Kissamos) Basin in northwest Crete (Greece): assessments using ambient noise recordings

Moisidi

Vallianatos

Kershaw

et al. 2014

Bull Earthquake Eng

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Crete is actively seismic and site response studies are needed for estimating local site conditions subjected to seismic activity. In order to collect basic data, we performed ambient noise recordings to estimate the site response of the surface and near subsurface structure of the small-scale Kastelli Basin in northwest Crete. The spatial HVSR resonance pattern of the investigated sites in the centre of the Basin consists of either one or two peaks divided into low to high frequency range in different sites as follows: a) in some sites only one amplified peak at low frequencies (0.59 -1.23 Hz), b) in other sites only one amplified peak at medium frequencies (2.9 -8.54 Hz) and c) in yet other sites two amplified peaks in the low to high frequency range (0.59 -15.54 Hz). The investigated sites are amplified in the frequency range 0.59 -15.54 Hz while the amplitude reaches to a factor of 4 in the spectral ratios. The one HVSR amplified peak at low frequencies is related to locally soft or thick Quaternary deposits.Microtremors were measured in the coastal northwest part of the Basin in a well -lithified Cretaceous limestone site characterized by fractures and faults striking predominantly in a sector NNE to NNW. Sites of one amplified peak at medium frequencies are extended from coastal northwest to southwest delineating a structure striking to NNW. The two amplified peaks are attributed to shallow subsurface heterogeneities/irregularities, locally induced by fault zones and to the overlying Quaternary deposits.Spatial HVSR variations in the frequency and HVSR shape delineate four structures striking NNE, NNW and in a sector NW to WNW, crosscutting the dense populated Basin, suggesting that microtremors could be a valuable tool for providing a first approximation of fault zone delineation at least for the KastelliKissamos Basin. The Basin is classified into the X soil category of the Greek Seismic Code 2000.

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“…The reader is referred to the two ERT profiles (figs. 7d and 7e, respectively), shown in Moisidi et al (2013). The ERT1 profile which was conducted west of the Basin (Fig.11) indicated:…”

Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Section: Fig11mentioning

confidence: 99%

Section: Fig11mentioning

confidence: 99%

See 2 more Smart Citations

Seismic site characterization of the Kastelli (Kissamos) Basin in northwest Crete (Greece): assessments using ambient noise recordings

Moisidi

Vallianatos

Kershaw

et al. 2014

Bull Earthquake Eng

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“…In the frame of this study, the probability electrical tomography imaging approach [Patella, 1997;Mauriello and Patella, 1999;Alaia et al, 2008;Mauriello and Patella, 2009] is tested using electrical resistivity data in Kastelli-Kissamos basin (northwest Crete) and Paleohora basin (southwest Crete). Data were acquired in order to model tectonic features and to reveal fault zones [Moisidi, 2009;Moisidi et al, 2013], within or nearby urban areas that are heavy populated mainly during summer season.…”

Section: Introductionmentioning

confidence: 99%

A Probability Electrical Resistivity Tomography Imaging of complex tectonic features in the Kissamos and Paleohora urban areas, Western Crete (Greece).

Cozzolino

Mauriello²,

Moisidi³

et al. 2019

Annals of Geophysics

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A number of 2D Electrical Resistivity Tomographies (ERT) was conducted in northwest and southwest Crete with the aim to model geotectonic features at selected urban sites. The study area is located within the central forearc of the Hellenic subduction zone. Thirteen ERT profiles were realized using the dipole-dipole electrode and/or the Wenner-Schlumberger arrays. In order to model the resistivity distribution, the probability-based electrical resistivity tomography inversion (PERTI) method has been applied. The main features of the PERTI method are: (i) unnecessity of a priori information; (ii) full, unconstrained adaptability to any kind of dataset, including the case of non-flat topography; (iii) independence from data acquisition techniques and spatial regularity; (iv) capability to resolve complex continuous resistivity variation. Since the present case-study is the first application of the PERTI algorithm to locate fault zones and near subsurface irregularities, its routine has been tested using the well-known RES2DINV commercial software as reference. The comparison has shown a common coherence between the results of the two inversion methods and confirmed the better filtering capacity and greater versatility of the PERTI algorithm, already outlined in a number of previous papers dealing with archaeological applications.

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Integrated use of well and geophysical data for constructing 3D geological models in shallow aquifers: a case study at the Tymbakion basin, Crete, Greece

et al. 2021

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Modelling tectonic features of the Kissamos and Paleohora areas, Western Crete (Greece): combining geological and geophysical surveys

Cited by 9 publications

References 35 publications

Seismic site characterization of the Kastelli (Kissamos) Basin in northwest Crete (Greece): assessments using ambient noise recordings

Seismic site characterization of the Kastelli (Kissamos) Basin in northwest Crete (Greece): assessments using ambient noise recordings

A Probability Electrical Resistivity Tomography Imaging of complex tectonic features in the Kissamos and Paleohora urban areas, Western Crete (Greece).

Integrated use of well and geophysical data for constructing 3D geological models in shallow aquifers: a case study at the Tymbakion basin, Crete, Greece

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