Active fault topography along Kangra Valley Fault in the epicentral zone of 1905 Mw7.8 earthquake NW Himalaya, India

Sahoo, Santiswarup; Malik, Javed N.

doi:10.1016/j.quaint.2017.03.020

Cited by 14 publications

(3 citation statements)

References 24 publications

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“…A compilation of some ongoing research was published during the reporting period as a special volume of the journal Quaternary International (Jayangondaperumal et al, 2017b).The volume presents 16 topical papers, which include morphotectonic analyses from the Nahansalient using several geomorphic indices such as stream length gradient index (steepness index), Hack profile convexities, and hypsometric integral (HI) alongwith hypsometric curve and elevation profiles (Kaushal et al, 2017). These studies reported spatially variable tectonic process across the Nahansalient and also reported identification of new active structure(s) that could be important for an improved seismotectonic evaluation of the salient Further west in the Kangra recess, Sahoo and Malik (2017) worked out further details of the active fault topography of the right lateral strike-slip fault i.e. the Kangra Valley Fault (KVF) along its length of about 60 km.…”

Section: Nw Himalayamentioning

confidence: 99%

Paleoseismological Studies in India (2016-2020): Status and Prospects

Rajendran¹,

Singh²,

Mukul³

et al. 2020

PINSA

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The last few years have witnessed consistent growth in paleoseismic investigations and active fault research in India. An overview of relevant publications during 2016-2020 indicates that this field is now widely accepted as a tool to characterize the seismic hazard in the country. Such studies initiated in the country in early nineties have gained momentum and widened its scope into a variety of tectonic and morphological settings.While earthquake frequency and fault activations are major objectives of such studies, the Indian researchers are now equally interested in constraining the fault geometry and the nature of near-surface crustal deformation, thereby contributing to earthquake hazard evaluations. This has been driven by an ever-increasing interaction between experts from associated fields like geomorphology, neotectonics, seismology, geodesy, modeling etc. Future challenges would include integrating the paleoseismological observations with the relevant geophysical inputs to develop physical models of the earthquake cycles, ultimately leading to an inventory of the active faults. Although there are gaps and disagreements on how things operated at different spatial and temporal scales, there have been broad agreements in general. The future should focus on evolving new strategies and methodologies to integrate different datasets in a coherent manner to yield practically relevant results and models that can explain data from various spatial and temporal scales.

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Section: Nw Himalayamentioning

confidence: 99%

Paleoseismological Studies in India (2016-2020): Status and Prospects

Rajendran¹,

Singh²,

Mukul³

et al. 2020

PINSA

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“…The Himalayan arc with ~2500 km length is continuously growing and causing many damaging earthquakes in the foothills (Rajendran et al2017). Many authors investigated major earthquakes through palaeoseismological studies for assessing the seismic hazard, location and intensity in all along the Himalayan arc such as 1905 Kangra (Mw ≤ 8.0, Ambreseys and Bilham 2000; Sahoo and Malik 2017), 1934Bihar-Nepal (Mw 8.2, Rajendran et al 2017), 1897Shillong (M 8.1, Sukhija et al 1999a), and 1950Upper Assam (Mw 8.6,Reddy et al 2009Priyanka et al 2017;Coudurier-Curveur • 2020;Rajendran and Rajendran 2021). In which Eastern Himalayan Syntaxis (EHS), where three tectonic domains interact and has produced largest intra-continental earthquake ever known (eg.…”

Section: Introductionmentioning

confidence: 99%

Holocene Records of Large Palaeoearthquake events from the Brahmaputra valley in the proximity of the Eastern Himalayan Syntaxis and Environmental Impacts

Bhadran

Duarah

Girishbai

et al. 2022

Preprint

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The Eastern Himalayan Syntaxis (EHS) and associated tectonic plate boundaries have caused two great earthquakes within hundred years and more than fifteen strong earthquakes (from eighteen centuries) in the foredeep Brahmaputra Basin. These earthquakes are generally considered blind, owing to the deficiency of surface rupture. Further, the lack of instrumental and historical archives elicits palaeo-seismological proxies for future seismic hazard assessment. The present study area is confined to the rapidly growing Dibrugarh City, lies on left bank of Brahmaputra and bounded by EHS in northeast, Main Frontal Thrust (MFT) in North, Naga Thrust (NT) in Southeast and Mishmi Thrust (MT) in east. This tectonically active area witnessed dreadful damages during the 1950 great Assam earthquake (Mw = 8.4), the largest continental ever recorded event. In this study, palaeoseismological evidence such as sand dyke and sand blow from different levels of the river terraces in and around Dibrugarh City has been dated using optically stimulated luminescence (OSL) methodology to understand the ages of the causative event. The optical dates from the palaeoliquefacton features indicate multiple episodic events ca. 888 ± 63 yrs, ca. 934 ± 63 yrs & ca. 989 ± 83 yrs. On the other hand, an age of ca. 11.3 ± 0.7 ka, early Holocene has been obtained from a neotectonic scarp indicates the crustal shortening time during MFT orogeny. Further, the empirical back-calculation of the complex geometry of the palaeoliquefaction feature facilitated in determining the causative earthquake magnitude and PGA, which is first of its kind from northeast of India. Back-calculation indicates, the magnitude of the earthquake might be range from 6.2-7.4Mw with PGA ~ 0.5-0.6g. The overlapping of palaeointensity lines /isoseismic lines from the empirical calculation, ESI and 1950 earthquake indicate the effect of multiple episodes of earthquake and vulnerability in Eastern Himalayan foothill areas. This study is of immense importance considering the seismic hazard potential in the eastern Himalaya and its surroundings and inadequate instrumentally recorded earthquake database.

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“…These regional faults cut across the major thrust systems. They include Karakoram Fault, Kishtwar Fault, Mansa Devi Fault, Kala Amb Tear Fault, Ganga and Yamuna Tear Faults,, Judi Fault and Bari Gad Fault (Paudel & Arita, 2000;Nakata & Kumahara, 2002;Malik & Nakata, 2003;Silver et al, 2015;Verma & Bansal, 2016;Sahoo & Malik, 2017;Kanna et al, 2018). Space-time distribution of earthquakes along the Himalayan plate boundary has been investigated with an aim to discerning uctuations in seismicity rates associated with great earthquakes, the possibilities of epicenter migration and identi cation of the gaps in seismic activity.…”

Section: Introductionmentioning

confidence: 99%

Crustal deformation analysis associated with 2019 Kashmir earthquake using DInSAR technique

Nath

Prasad

Chatterjee

et al. 2022

Preprint

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The 2019 Mw 5.6 Kashmir earthquake occurred near the foothill regions of Himalaya causing severe damage to the buildings area in spite of lesser magnitude. The difference in intensity of damage in the area indicates difference in sediment load, underlying structures and the ongoing tectonic activity in the area. Complex tectonic setup making the area one of the seismically active region in Himalayan Belt. Bounded by two major faults, Samwal Fault and Jhelum Fault, the area is modified by both the tectonic forces. DInSAR observations from this study suggested that most deformation was concentrated in between NE - SW Samwal fault and NW - SE Jhelum Fault. The phase profile indicates upliftment of 0.27 m in south of EW Samwal Fault whereas subsidence of 0.16 m near northern side on LOS direction.

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Active fault topography along Kangra Valley Fault in the epicentral zone of 1905 Mw7.8 earthquake NW Himalaya, India

Cited by 14 publications

References 24 publications

Paleoseismological Studies in India (2016-2020): Status and Prospects

Paleoseismological Studies in India (2016-2020): Status and Prospects

Holocene Records of Large Palaeoearthquake events from the Brahmaputra valley in the proximity of the Eastern Himalayan Syntaxis and Environmental Impacts

Crustal deformation analysis associated with 2019 Kashmir earthquake using DInSAR technique

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