Mapping the Nidar Ophiolite Complex of the Indus Suture Zone, Northwestern-Trans Himalaya using IRS-1C/1D data

Philip, George; Ravindran, K. V.; Mathew, John

doi:10.1080/0143116021000023862

Cited by 14 publications

(7 citation statements)

References 10 publications

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“…This method, based on a principal component transformation of the acquired data, is widely applied and has been discussed by Nasir (2015, 2013), Philip et al (2003), Matthews and Jones (1992), Abrams et al (1988), Rothery (1984), and Gillespie et al (1986). In the present study, the transformed channels were contrast stretched and arbitrarily assigned primary colors for display as a color composite image.…”

Section: Image Analysis and Interpretationsmentioning

confidence: 99%

Tertiary and quaternary marine terraces and planation surfaces of northern Oman: Interaction of flexural bulge migration associated with the Arabian-Eurasian collision and eustatic sea level changes

2016

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The northeastern Arabian passive margin is being subducted beneath the Zagros and Makran of Iran. A flexural bulge related to the weight of the Makran has migrated at 4 cm/a through the previously uplifted Hajar Mountains of Oman as this active convergence and collision between Arabia and Eurasia progresses, adding approximately another 500 meters of relief, and forming a series of uplifted marine terraces, alluvial terraces, and planation surfaces that record the passage of the bulge. We use a combination of field studies, remote sensing and GIS to map and better-understand these terraces, and elucidate how the tectonics of bulge migration, down-to-trench normal faulting, and eustatic sea level changes have interacted to produce the extant geomorphic features on the inner slope of the flexural bulge as it sinks into the foredeep of the Gulf of Oman. We speculate those terraces that were uplifted on the outer slope of the forebulge as it initially migrated through the passive margin (affected by ophiolite obduction in the Cretaceous) 3.75-7.5 Ma ago are now sinking on the inner slope of the forebulge (corresponding to the outer trench slope in the foredeep), and have been partly covered by Quaternary marine terraces related to a Weichselian sea level high stand. Both the Tertiary and Quaternary terraces are cut by faults related to the active collision, confirming that there is a significant risk of moderate earthquakes in the region. KEY WORDS: marine terraces, flexural bulge, Arabia-Eurasia collision, Sultanate of Oman, remote sensing, image processing, Quaternary sea level fluctuation.

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Section: Image Analysis and Interpretationsmentioning

confidence: 99%

Tertiary and quaternary marine terraces and planation surfaces of northern Oman: Interaction of flexural bulge migration associated with the Arabian-Eurasian collision and eustatic sea level changes

2016

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“…Although previous studies have demonstrated the capability to improve lithological classification accuracies through data integration, they have been confined to using data with only moderate-to-coarse spatial resolutions (i.e., 12.5-30 m). The potential to delineate lithological contacts in finer detail and with better accuracy is further enhanced by the availability of high-resolution remote sensing data (Philip et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…For these reasons lithological maps are typically generated using limited numbers of field and outcrop observations which may, as a consequence, result in some concern regarding the accuracy of the lithological contacts (Philip et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Integrating airborne multispectral imagery and airborne LiDAR data for enhanced lithological mapping in vegetated terrain

Grebby

Naden

Cunningham

et al. 2011

Remote Sensing of Environment

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“…In addition to this, there are a number of faults, which have been confirmed by earlier workers. Traces of faults-fractures-joints which are identifiable on the digitally enhanced (Philip et al 2003), standard false-colour composite of LISS IV data, have been mapped as the inferred lineaments in the study area. In order to understand the influence of tectonically active regional geological structures like the MBT and that of other structures towards slope destabilisation, distance to the confirmed thrusts-faults (Suzen 2002), distance to the inferred lineaments, as well as, the density of all the geological structures together have been prepared as raster GIS database with 25-m cell size.…”

Section: Causal Factors and Landslide Databasementioning

confidence: 99%

Landslide susceptibility zonation mapping and its validation in part of Garhwal Lesser Himalaya, India, using binary logistic regression analysis and receiver operating characteristic curve method

Jha²,

2008

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Landslide susceptibility zonation mapping and its validation in part of Garhwal Lesser Himalaya, India, using binary logistic regression analysis and receiver operating characteristic curve method Abstract A landslide susceptibility zonation (LSZ) map helps to understand the spatial distribution of slope failure probability in an area and hence it is useful for effective landslide hazard mitigation measures. Such maps can be generated using qualitative or quantitative approaches. The present study is an attempt to utilise a multivariate statistical method called binary logistic regression (BLR) analysis for LSZ mapping in part of the Garhwal Lesser Himalaya, India, lying close to the Main Boundary Thrust (MBT). This method gives the freedom to use categorical and continuous predictor variables together in a regression analysis. Geographic Information System has been used for preparing the database on causal factors of slope instability and landslide locations as well as for carrying out the spatial modelling of landslide susceptibility. A forward stepwise logistic regression analysis using maximum likelihood estimation method has been used in the regression. The constant and the coefficients of the predictor variables retained by the regression model have been used to calculate the probability of slope failure for the entire study area. The predictive logistic regression model has been validated by receiver operating characteristic curve analysis, which has given 91.7% accuracy for the developed BLR model.

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Mapping the Nidar Ophiolite Complex of the Indus Suture Zone, Northwestern-Trans Himalaya using IRS-1C/1D data

Cited by 14 publications

References 10 publications

Tertiary and quaternary marine terraces and planation surfaces of northern Oman: Interaction of flexural bulge migration associated with the Arabian-Eurasian collision and eustatic sea level changes

Tertiary and quaternary marine terraces and planation surfaces of northern Oman: Interaction of flexural bulge migration associated with the Arabian-Eurasian collision and eustatic sea level changes

Integrating airborne multispectral imagery and airborne LiDAR data for enhanced lithological mapping in vegetated terrain

Landslide susceptibility zonation mapping and its validation in part of Garhwal Lesser Himalaya, India, using binary logistic regression analysis and receiver operating characteristic curve method

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