Assessment of active tectonics from geomorphic indices and morphometric parameters in part of Ganga basin

Anand, Anuranjan; Pradhan, Sarada Prasad

doi:10.1007/s11629-018-5172-2

Cited by 52 publications

(13 citation statements)

References 41 publications

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“…The asymmetry factor (Af) was developed to detect unstable settings that are transverse to river flow at drainage basin-scale [6,114,130,131]. Since its values can be affected by lithological and structural control, the Af works best if the drainage basins are developed on uniform and/or comparable lithologies [64,68,127].…”

Section: Sub-basins-derived Indexesmentioning

confidence: 99%

Morphoneotectonics of the Abruzzo Periadriatic Area (Central Italy): Morphometric Analysis and Morphological Evidence of Tectonics Features

2021

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Drainage basin-scale morphometric analysis and morphological evidence of tectonics represent helpful tools to evaluate and investigate morphoneotectonic processes in tectonically active regions. In this perspective, we applied an integrated analysis to the Abruzzo Periadriatic Area, between the Tronto and Sinello rivers (Central Italy). It involved morphometric analysis, structural geomorphological field mapping, and detailed analysis of fluvial terraces. Geomorphic indexes and markers (e.g., Irta, SL index, ksn, and knickpoints) were used in this study to detect the response of landscapes to drainage systems’ unsteadiness and tectonic deformation processes, possibly induced by the ongoing activity of the buried tectonic structures. Furthermore, the investigation of morphological field evidence of tectonics, integrated with the analysis of fluvial terraces’ spatial and temporal arrangement, was performed to assign relative, geomorphologically-based, age constraints of the landscape evolution. The resulting data allowed us to define domains affected by different morphostructural and morphoneotectonic processes, related to the impact and ongoing activity of the five detected families of structural elements (S1, F1, F2, F3, and F4), mainly characterized by compressive, extensional, and transtensive kinematics. Finally, this study could represent a scientific basis for integrating morphometric, fluvial, and tectonic geomorphology analysis to better define the main phases of the landscape evolution and the impact of morphoneotectonic processes on fluvial environments in uplifting piedmont areas.

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Section: Sub-basins-derived Indexesmentioning

confidence: 99%

Morphoneotectonics of the Abruzzo Periadriatic Area (Central Italy): Morphometric Analysis and Morphological Evidence of Tectonics Features

2021

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“…Geomorphic indices have been widely and successfully used as survey tools for the identification of areas experiencing rapid tectonic deformation [1][2][3][4][5][6]. Although many criteria for the classification of active tectonics in different areas have been proposed [7][8][9][10], there are only a few studies specifically dealing with the classification of landscape deformation. Among the latter is the article of Argyriou et al [1], which proposed the Neotectonic Landscape Deformation Index (NLDI) and applied it successfully to assess the neotectonic deformation of the landscape in the active region of western Crete.…”

Section: Introductionmentioning

confidence: 99%

“…The majority of the morphometric and neotectonic analyses combine several GIS techniques, such as spatial analysis tools and geoprocessing tools that include the use of Digital Elevation Model (DEM) mosaics, aerial photographs, satellite images and the Shuttle Radar Topography Mission (SRTM) elevation model [9,23,24]. Additionally, neotectonic activity may be studied and interpreted with the use of other surface methods such as optical remote sensing [25], which utilizes alternative software for image processing (among others, ERDAS, IMAGINE and ENVI) [26] in order to implement further digital techniques (image enhancement, contrast stretching etc.)…”

Section: Introductionmentioning

confidence: 99%

Assessment of Neotectonic Landscape Deformation in Evia Island, Greece, Using GIS-Based Multi-Criteria Analysis

Valkanou

Karymbalis

Papanastassiou

et al. 2021

IJGI

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This study deals with the assessment and mapping of neotectonic landscape deformation in the northern part of the Evia Island (Central Greece). Multi-Criteria Decision Analysis (MCDA) utilizing Analytic Hierarchy Process (AHP) and Weighted Linear Combination (WLC) procedures were conducted for the calculation of the Neotectonic Landscape Deformation Index (NLDI). The study is based on the combination of morphotectonic, geomorphological and geological parameters. The GIS-based spatial MCDA led to the classification of the study area into five classes of neotectonic deformation (from very low to very high) and to a neotectonic deformation map. The results were compared with the outputs of a relative tectonic activity classification approach based on quantitative geomorphic analysis at a regional scale, including site-specific field observations. Areas of high and very high deformation are related to the major active faults of Dirfis, Kandili and Gregolimano–Telethrio. Other minor active normal faults of medium to high seismic risk level, affecting the northern and northeastern parts of the island, are also associated with areas of intense landscape neotectonic deformation.

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“…Several studies focus on a specific index for an area [8,9], but many others evaluate the relative tectonic activity in the wider region and with the use of multiple quantitative morphometric parameters (e.g., [10][11][12][13][14][15]). Recently, the quantification of drainage basins' topography through the combination of multiple morphometric variables, in order to produce a single index that can be used to characterize relative tectonic activity, is a common approach in studies of active tectonics (e.g., [7,10,[16][17][18]).…”

Section: Introductionmentioning

confidence: 99%

Μorphometric Analysis for the Assessment of Relative Tectonic Activity in Evia Island, Greece

et al. 2020

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The aim of this study is to evaluate the relative tectonic activity in the north part of the Evia Island, located in Central Greece, and to investigate the contribution of neotectonic processes in the development of the fluvial landscape. Five morphometric parameters, including Drainage Basin Slope (Sb), Hypsometric Integral (Hi), Asymmetry Factor (Af), Relief Ratio (Rh), and Melton’s Ruggedness Number (M), were estimated for a total of 189 drainage basins. The catchments were classified into two groups, according to the estimated values of each morphometric parameter, and maps showing their spatial distribution were produced. The combination of the calculated morphometric parameters led to a new single integrated Index of relative tectonic activity (named Irta). Following this indexing, the basins were characterized as of low, moderate, or high relative tectonic activity. The quantitative analysis showed that the development of the present drainage systems and the geometry of the basins of the study area have been influenced by the tectonic uplift caused by the activity of two NW-SE trending offshore active normal fault systems: the north Gulf of Evia fault zone (Kandili-Telethrion) and the Aegean Sea fault zone (Dirfis), respectively. The spatial distribution of the values of the new integrated index Irta showed significant differences among the drainage basins that reflect differences in relative tectonic activity related to their location with regard to the normal fault systems of the study area.

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Assessment of active tectonics from geomorphic indices and morphometric parameters in part of Ganga basin

Cited by 52 publications

References 41 publications

Morphoneotectonics of the Abruzzo Periadriatic Area (Central Italy): Morphometric Analysis and Morphological Evidence of Tectonics Features

Morphoneotectonics of the Abruzzo Periadriatic Area (Central Italy): Morphometric Analysis and Morphological Evidence of Tectonics Features

Assessment of Neotectonic Landscape Deformation in Evia Island, Greece, Using GIS-Based Multi-Criteria Analysis

Μorphometric Analysis for the Assessment of Relative Tectonic Activity in Evia Island, Greece

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