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Journal articles on the topic 'Seismic hazard- North east India'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Bahuguna, Ashish, and Arjun Sil. "Comprehensive Seismicity, Seismic Sources and Seismic Hazard Assessment of Assam, North East India." Journal of Earthquake Engineering 24, no. 2 (2018): 254–97. http://dx.doi.org/10.1080/13632469.2018.1453405.

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2

Chandan Dey, Santanu Baruah, Bijit Kr Choudhury, et al. "Living with Earthquakes: Educating masses through earthquake awareness: North East (NE) India perspective." Annals of Geophysics 64, no. 3 (2021): SE330. http://dx.doi.org/10.4401/ag-8479.

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Earthquake is one of the most frightening and destructive phenomena of nature. The northeast India region, as well as its adjoining South-Asian neighbours including Myanmar and Bangladesh, is tectonically and seismically most active. The region categorized under the highest level of seismic hazard potential: Zone V, of the seismic zonation map of India, has experienced nearly 22 large (M ≥7.0) and two great earthquakes (M S ∼ 8.7) in the past 130 years. All these earthquakes caused wide-spread damage over the region. In the recent past, with rapid urbanization combined with a significant popul

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3

Borah, Niranjan, and Abhishek Kumar. "Probabilistic seismic hazard analysis of the North-East India towards identification of contributing seismic sources." Geomatics, Natural Hazards and Risk 14, no. 1 (2022): 1–38. http://dx.doi.org/10.1080/19475705.2022.2160662.

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4

Joshi, A., Kapil Mohan, and R. C. Patel. "A deterministic approach for preparation of seismic hazard maps in North East India." Natural Hazards 43, no. 1 (2007): 129–46. http://dx.doi.org/10.1007/s11069-007-9112-7.

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5

Sil, Arjun, Satyaprakash Mishra, and Aman Kumar. "Seismic hazard analysis of North East India and hazard assessment of capital cities in the region." International Journal of Reliability and Safety 17, no. 2 (2023): 143–66. http://dx.doi.org/10.1504/ijrs.2023.10059800.

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Kumar, Aman, Satyaprakash Mishra, and Arjun Sil. "Seismic hazard analysis of North East India and hazard assessment of capital cities in the region." International Journal of Reliability and Safety 17, no. 2 (2023): 143–66. http://dx.doi.org/10.1504/ijrs.2023.134299.

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7

Sharma, Purobi. "Uncoordinated Paradigm of Housing in the Prime City of Northeast India." Journal of North East India Studies 4, no. 2 (2014): 31–40. https://doi.org/10.5281/zenodo.12772646.

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The urbanisation process reveals a complicated picture of two distinct trends, one, the ever increasing growth of population and second the myriad questions involved in management of its affairs. It is particularly so in the developing countries as there is a great lag between the growth and planning process. In the city of Guwahati, Housing is a major area of concern due to its physiographic features and its growth pattern. Urban seismic risk in Guwahati is increasing with extensive growth and the encroachment of vulnerable built–environment into areas susceptible to seismic hazard. The

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8

Lozovsky, Ilya, Ivan Varentsov, and Devesh Walia. "Crustal and Upper Mantle Structure of the Assam Valley Region, NE India: A Review of Geophysical Findings." Geosciences 15, no. 1 (2025): 27. https://doi.org/10.3390/geosciences15010027.

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The northeastern region of India is one of the six most seismically active convergent plate tectonic areas in the world. The north–south convergence along the Indo-Tibetan Himalayan Ranges and the east–west subduction within the Indo-Burma Ranges create a complex stress regime, resulting in significant seismic activity and a history of great/large earthquakes. The region’s intricate strain patterns, active faults, and potential seismic gaps underscore the need for detailed subsurface studies to effectively assess seismic hazards and impending seismicity. Geophysical research is essential for u

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Tirmizi, Osman, Shuhab D. Khan, Sara Mirzaee, and Heresh Fattahi. "Hazard Potential in Southern Pakistan: A Study on the Subsidence and Neotectonics of Karachi and Surrounding Areas." Remote Sensing 15, no. 5 (2023): 1290. http://dx.doi.org/10.3390/rs15051290.

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Coastal communities in deltaic regions worldwide are subject to subsidence through a combination of natural and anthropogenic processes. The city of Karachi in southern Pakistan is situated along the diffuse western boundary of the tectonically active Indian Plate, making it more susceptible to natural subsidence processes from plate motion-related deformational events such as earthquakes and faulting. Karachi has a dense population of over 16 million people, and determining the rate of subsidence and extent of neotectonic activity is crucial for mitigating seismic hazards. Excessive abstracti

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Raghu Kanth, S. T. G., and Sujit Kumar Dash. "Deterministic seismic scenarios for North East India." Journal of Seismology 14, no. 2 (2009): 143–67. http://dx.doi.org/10.1007/s10950-009-9158-y.

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11

Carlton, Brian, Andy Barwise, and Amir M. Kaynia. "Seismic Hazard Assessment for a Wind Farm Offshore England." Geotechnics 2, no. 1 (2022): 14–31. http://dx.doi.org/10.3390/geotechnics2010002.

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Offshore wind has become a major contributor to reducing global carbon emissions. This paper presents a probabilistic seismic hazard analysis for the Sofia Offshore Wind Farm, which is located about 200 km north-east of England in the southern North Sea and will be one of the largest offshore wind farms in the world once completed. The seismic source characterization is composed of two areal seismic source models and four seismic source models derived using smoothed gridded seismicity with earthquake catalogue data processed by different techniques. The ground motion characterization contains

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12

Pallavi, Ranjit Das, Sandeep Joshi, Claudio Meneses, and Tinku Biswas. "Advanced Unified Earthquake Catalog for North East India." Applied Sciences 13, no. 5 (2023): 2812. http://dx.doi.org/10.3390/app13052812.

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Northeast India is one of the world’s most seismically active regions. The event data included in this research for the period 1737–2012 is mostly obtained from worldwide database agencies such as ISC, NEIC, and GCMT. Historical seismicity is collected from published and unpublished documents and some earthquake events are collected from the Indian Meteorological Department Bulletins. As the Mw scale is developed and validated in the southern California region and overestimates the smaller magnitude earthquakes, therefore, recent literature suggested an improved version of the seismic moment m

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13

Rizzo, Paul C., N. R. Vaidya, E. Bazan, and C. F. Heberling. "Seismic Hazard Assessment in the Southeastern United States." Earthquake Spectra 11, no. 1 (1995): 129–60. http://dx.doi.org/10.1193/1.1585806.

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Comparisons of response spectra from near and far-field records to those estimated by attenuation functions commonly used in evaluating seismic hazards show that these functions provide reasonable results for near-field western North American sites. However, they estimate relatively small motions for far-field eastern North American sites, which is contrary to the empirical evidence of the 1886 Charleston and 1988 Saguenay Earthquakes. Using the 1988 Saguenay records scaled for magnitude, and several western North American records scaled to account for the slower attenuation in the east, we ha

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14

Haerifard, S., H. Jarahi, M. Pourkermani, and M. Almasian. "Seismic Hazard Assessment at Esfaraen‒Bojnurd Railway, North‒East of Iran." Geotectonics 52, no. 1 (2018): 151–56. http://dx.doi.org/10.1134/s0016852118010041.

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15

Drogreshka, Katerina, Jasmina Najdovska, and Dragana Chernih-Anastasovska. "SEISMIC ZONES AND SEISMICITY OF THE TERRITORY OF THE REPUBLIC OF NORTH MACEDONIA." Knowledge International Journal 31, no. 3 (2019): 669–74. http://dx.doi.org/10.35120/kij3103669d.

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According to all sources of data available to the Seismological Observatory the seismic activity in the Republic of North Macedonia is mainly tectonic, with the exception of weak collapse earthquakes. This seismic activity is caused by its affiliation to the Mediterranean area of the Alpine-Himalayan orogeny belt. Epicentral areas belong to the three main seismic zones, West-Macedonian seismic zone, Vardar seismic zone and East-Macedonian seismic zone. Three secondary seismic zones, transverse to the main seismic zones, are also defined. Each of these zones is characterized by а specific time

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16

Kumar, Susheel, and Nitin Sharma. "The seismicity of central and north-east Himalayan region." Contributions to Geophysics and Geodesy 49, no. 3 (2019): 265–81. http://dx.doi.org/10.2478/congeo-2019-0014.

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Abstract The Himalayan range extends upto 2400 km arc from Indus river valley in the west to Brahmaputra river valley in the east of India. Due to distinct geological structures of Himalayan seismic belt, seismicity in Himalaya is inhomogeneous. The inhomogeneity in seismicity is responsible for a number of seismic gaps in the Himalayan seismic belt. Thus Iin the present study, we proposed the study of spatial and temporal evolution of seismicity in entire central and north-east Himalayan region by using Gutenberg-Richter relationship. A detailed study on the behavior of natural seismicity in

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17

Purba, Joshua, Ramadhan Priadi, Muhammad Frando, and Imanuela Pertiwi. "The Purpri Fault: A newly identified active fault in East Kolaka, Indonesia, based on HypoDD and DInSAR." Geoloski anali Balkanskoga poluostrva, no. 00 (2025): 5. https://doi.org/10.2298/gabp250417005p.

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The Purpri Fault, a newly identified active fault in East Kolaka, Indonesia, has been analyzed using an integrated geophysical approach, combining HypoDD earthquake relocation and DInSAR ground deformation analysis. The relocation of 233 seismic events from January 24 to February 7, 2025, revealed a fault structure distinct from the Middle Kolaka and North Kolaka Faults, characterized by an oblique-normal faulting mechanism with a left-lateral component. The focal mechanism solution confirms significant vertical displacement, indicating a fault that accommodates both extensional and shear defo

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Farman, Mustafa Shakir, and AbdulMuttalib Isa Said. "Updated Probabilistic Seismic Hazard Assessment for Iraq/2018." Civil Engineering Journal 4, no. 7 (2018): 1610. http://dx.doi.org/10.28991/cej-0309199.

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Recently, Iraq has experienced an unprecedented seismic activity, specifically, near the east boundary with Iran which reveals the need to re-evaluate the seismic hazard at this region. This study consists of two phases. The first is collecting the earthquake records covering the recent events till the end of November 2017 including the 12 November 2017 (7.3Mw) earthquake, and applying data processing to get the net data for independent events for the study area which were more than 4300 of net main earthquakes of Mw ≥ 4 and were used in the second phase. The second phase is applying the PSHA

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19

SHUKLA, H. P., R. S. DATTATRAYAM, and A. K. BHATNAGAR. "Seismicity of region around dams in North West India." MAUSAM 63, no. 2 (2021): 261–74. http://dx.doi.org/10.54302/mausam.v63i2.1399.

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The collision of Indian and Eurasian continents caused large scale deformation and high seismicityof vast areas of both continents in the geological history. The North-West portion of the Himalayan arc which is lyingunder the rupture zones of Kangra earthquake of 1905, Uttarkashi earthquake of 1991 and Chamoli earthquake in 1999,has experienced many earthquakes of magnitude 6 and above. The region of North-West India between 30.0º - 35.0ºNorth and 73.0º - 79.0º East is, therefore, under intense investigations by various scientists since the origin of theHimalayas. India Meteorological Departme

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20

Rahman, T., L. Ricky, and Chhangte. "Estimation of probabilistic seismic hazard for Aizawl city in North Eastern India (NEI)." IOP Conference Series: Earth and Environmental Science 491 (July 8, 2020): 012028. http://dx.doi.org/10.1088/1755-1315/491/1/012028.

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21

Reddy, M. V. Ravi Kishore, Supriya Mohanty, and Rehana Shaik. "Seismic Performance of Soil-Ash and Soil-Ash-Foundation System." International Journal of Geotechnical Earthquake Engineering 11, no. 1 (2020): 45–70. http://dx.doi.org/10.4018/ijgee.2020010103.

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In this study, a 3D seismic response of soil deposit, soil-ash deposit and soil-ash-foundation system was investigated. Homogeneous sand deposit of 80m × 9m × 20m was initially analyzed. A pond ash layer is on top of the sand deposit with varying thicknesses and the efficiency of the pond ash layer on the sand deposit was evaluated for its best suitability. The optimum sand-ash deposit overlain by a shallow foundation has been analysed under the excitation of the Nepal (Mw:7.8) and North East India earthquake (Mw:7.5). A seismic response analysis was performed using finite element software PLA

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22

Gagan, Deep. "Assessment of Seismic Hazard for the District of Jalandhar (India) in view of Smart City Mission." Annals of Earth, Environment, and Infrastructure Engineering 1, no. 1 (2021): 1–12. https://doi.org/10.5281/zenodo.7282093.

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Probabilistic seismic hazard analysis (PSHA) has been carried out for the district of Jalandhar. The earthquake data has been collected from different seismological agencies, e.g. NDMA, IMD, ISC-UK and USGS, and a comprehensive earthquake catalogue has been developed. Several ground motion prediction equations have been reviewed to select a GMPE appropriate for carrying out PSHA. Earthquake hazard parameters have been estimated for PGA and spectral acceleration. The seismic hazard maps of district have been developed for different return periods at 10%, 2% and 1% probability of exceedance. The

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23

Syaifuddin, Firman, Amien Widodo, and Dwa Desa Warnana. "Surabaya earthquake hazard soil assessment." E3S Web of Conferences 156 (2020): 02001. http://dx.doi.org/10.1051/e3sconf/202015602001.

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The vulnerability of land in an area to earthquake ground motions is one of the factors causing damage caused by the earthquakes. The city of Surabaya, which is crossed by two active fault segments, needs an assessment to reduce the risk of being affected by an earthquake that might occur. The aims of this study are (1) to find out the distribution of Seismic Site Classes, (20 to know the distribution of the value of Seismic Amplification, and (3) to know the potential of liquefaction in the city of Surabaya. Surabaya city, which is geologically dominated by alluvium deposits, consists of soft

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24

Nath, S. K., M. D. Adhikari, S. K. Maiti, N. Devaraj, N. Srivastava, and L. D. Mohapatra. "Earthquake scenario in West Bengal with emphasis on seismic hazard microzonation of the city of Kolkata, India." Natural Hazards and Earth System Sciences 14, no. 9 (2014): 2549–75. http://dx.doi.org/10.5194/nhess-14-2549-2014.

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Abstract. Seismic microzonation is a process of estimating site-specific effects due to an earthquake on urban centers for its disaster mitigation and management. The state of West Bengal, located in the western foreland of the Assam–Arakan Orogenic Belt, the Himalayan foothills and Surma Valley, has been struck by several devastating earthquakes in the past, indicating the need for a seismotectonic review of the province, especially in light of probable seismic threat to its capital city of Kolkata, which is a major industrial and commercial hub in the eastern and northeastern region of India

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Williams, Jack N., Luke N. J. Wedmore, Åke Fagereng, et al. "Geologic and geodetic constraints on the magnitude and frequency of earthquakes along Malawi's active faults: the Malawi Seismogenic Source Model (MSSM)." Natural Hazards and Earth System Sciences 22, no. 11 (2022): 3607–39. http://dx.doi.org/10.5194/nhess-22-3607-2022.

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Abstract. Active fault data are commonly used in seismic hazard assessments, but there are challenges in deriving the slip rate, geometry, and frequency of earthquakes along active faults. Herein, we present the open-access geospatial Malawi Seismogenic Source Model (MSSM; https://doi.org/10.5281/zenodo.5599616), which describes the seismogenic properties of faults that formed during ongoing east African rifting in Malawi. We first use empirically derived constraints to geometrically classify active faults into section, fault, and multifault seismogenic sources. For sources in the North Basin

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26

Coman, Cristina, and Sanda Manea. "Landslides Hazard Assessment Using Different Approaches." Mathematical Modelling in Civil Engineering 13, no. 2 (2017): 1–16. http://dx.doi.org/10.1515/mmce-2017-0004.

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AbstractRomania represents one of Europe’s countries with high landslides occurrence frequency. Landslide hazard maps are designed by considering the interaction of several factors which, by their joint action may affect the equilibrium state of the natural slopes. The aim of this paper is landslides hazard assessment using the methodology provided by the Romanian national legislation and a very largely used statistical method. The final results of these two analyses are quantitative or semi-quantitative landslides hazard maps, created in geographic information system environment. The data bas

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., Malsawmtluanga, Vabeihmo Ch, Lalduhawmi Rebecca, and Malsawmtluangi . "Morphometric analysis of relative tectonic activity in the upper parts of Tlawng river watershed in Lunglei, Mizoram, India." Disaster Advances 14, no. 10 (2021): 15–22. http://dx.doi.org/10.25303/1410da1522.

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The State of Mizoram in India is geologically located within the Indo Burmese Wedge (IBW) of the Indo Burmese Arc (IBA). The state is a landlocked state domestically bordered by Tripura in the north-west, Assam in the north and Manipur to its north-east. It shares international boundaries with Bangladesh to its west and Myanmar in the east. This region is amongst the most seismically active regions of the world and numerous seismic activities had occurred in the past. The high seismicity of the region of North East India is attributed to plate tectonics and is lying in the plate boundary regio

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Kulkarni, Swapnil. "Seismic Analysis of Building Resting on Sloping Ground." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (2021): 1340–52. http://dx.doi.org/10.22214/ijraset.2021.36647.

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In India, for example, the north-east states. The scarcity of plain ground in hilly areas compels construction activity on sloping ground resulting in various important buildings such as reinforced concrete framed hospitals, colleges, hotels and offices resting on hilly slopes. The behavior of buildings during earthquake depends upon the distribution of mass and stiffness in both horizontal and vertical planes of the buildings. Various models were analyzed using staad pro. after all result and comparison it is found that buildings with set back and step back patterns give more stable pattern d

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Radziminovich, Ya, N. Gileva, A. Seredkina та V. Melnikova. "DZHIRGA EARTHQUAKE on April 27, 2014, Mw=4.9, КР=13.3, I0=7 (Northern Baikal Region)". Earthquakes in Northern Eurasia, № 23 (15 грудня 2020): 307–16. http://dx.doi.org/10.35540/1818-6254.2020.23.31.

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We consider the April 27, 2014, Mw=4.9 Dzhirga earthquake, occurred within the north-eastern end of the Barguzin Depression. The event is the second one by energy level in the study area for the period of instrumental observations. The earthquake was followed by an aftershock sequence of 75 weak shocks recorded till the end of the year. The focal mechanism was determined from surface wave records from 13 digital broadband seismic stations of the IRIS networks. The obtained solution demonstrates the normal fault kinematics with both nodal planes striking north-east that corresponds to the regio

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Paul, Abhik, Pradipta Chakrabortty, A. Burman, and Sapan Kumar. "Probabilistic Seismic Hazard Assessment of Sitamarhi near the Central Himalayan Region." Journal Of The Geological Society Of India 100, no. 7 (2024): 1007–17. http://dx.doi.org/10.17491/jgsi/2024/173943.

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ABSTRACT Sitamarhi, situated in the North-Bihar region of the Himalayan foothills is one of the seismically vulnerable regions of India. This region faced several devastating earthquakes, such as the 1934 and 1988 Bihar Nepal earthquake and the 2015 Nepal earthquake due to the movement of tectonic plates. The purpose of the present study is to exhibit the uniform hazard spectrum (UHS) and peak ground acceleration (PGA) values based on the probabilistic seismic hazard method using different seismotectonic parameters. The Gutenberg Richter (G-R) seismicity parameters ‘a’ and ‘b’ were estimated o

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Kozacı, Özgür, and Erhan Altunel. "Characteristics of the North Anatolian Fault at the eastern end of Marmara seismic gap based on multidisciplinary field evidence." Geophysical Journal International 229, no. 3 (2022): 1785–803. http://dx.doi.org/10.1093/gji/ggac022.

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SUMMARY The northern branch of the North Anatolian Fault (NAF) is the primary source of the greatest natural hazard for the Marmara Megapolis and specifically the İstanbul Metropolitan area. The Sea of Marmara section of the NAF is a ∼125-km-long seismic gap bound by the M7.4 1912 Mürefte earthquake rupture in the west and M7.4 1999 İzmit earthquake rupture in the east. Terminations of these ruptures define the length of the seismic gap in the Marmara Sea and consequently the magnitude and rupture extent of the expected large magnitude earthquake. The Hersek Peninsula is the last location wher

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Chakraborty, K., P. P. Mondal, M. Chabukdhara, and S. Sudhakar. "Forest fire scenario and challenges of mitigation during fire season in North East India." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-8 (November 27, 2014): 27–33. http://dx.doi.org/10.5194/isprsarchives-xl-8-27-2014.

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Forest fires are a major environmental problem in North East Region (NER) with large tracts of forest areas being affected in every season. Forest fires have become a major threat to the forest ecosystems in the region, leading to loss of timber, biodiversity, wildlife habitat and loss to other natural resources. Studies on forest fire have reported that about 50% of forest fire in the country takes place in NE region. The forest fire in NER is anthropogenic in nature. The forest fire hazard map generated based on appropriate weightage given to the factors affecting fire behavior like topograp

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Chetia, Timangshu, Saurabh Baruah, Chandan Dey, Sangeeta Sharma, and Santanu Baruah. "Probabilistic Analysis of Seismic Data for Earthquake Forecast in North East India and its Vicinity." Current Science 117, no. 7 (2019): 1167. http://dx.doi.org/10.18520/cs/v117/i7/1167-1173.

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Petterson, Michael, Sonam Wangchuk, and Norgay Konchok. "A multiple natural hazard analysis, SECMOL College region, near Leh, Ladakh, North India, with applications for community-based DRR." Disaster Prevention and Management: An International Journal 29, no. 3 (2019): 287–312. http://dx.doi.org/10.1108/dpm-02-2019-0064.

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Purpose This paper places a college at the centreof a multi-hazard assessment (earthquake, flood and landslide). The college is within a less studied, rural area of Ladakh, North India. Research focusses on a case study (Students Educational and Cultural Movement of Ladakh (SECMOL) College), close to Leh, Ladakh, and extends to incorporate/apply thinking from/to the wider Ladakh region. The approach adopted, centring on the hazard assessment of a single entity/local area, allows a rapid uptake of hazard recommendations within a college environment planning to continue its existence for decades

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Gasperini, Luca, Massimiliano Stucchi, Vincenzo Cedro, Mustapha Meghraoui, Gulsen Ucarkus, and Alina Polonia. "Active fault segments along the North Anatolian Fault system in the Sea of Marmara: implication for seismic hazard." Mediterranean Geoscience Reviews 3, no. 1 (2021): 29–44. http://dx.doi.org/10.1007/s42990-021-00048-7.

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AbstractA new analysis of high-resolution multibeam and seismic reflection data, collected during several oceanographic expeditions starting from 1999, allowed us to compile an updated morphotectonic map of the North Anatolian Fault below the Sea of Marmara. We reconstructed kinematics and geometries of individual fault segments, active at the time scale of 10 ka, an interval which includes several earthquake cycles, taking as stratigraphic marker the base of the latest marine transgression. Given the high deformation rates relative to sediment supply, most active tectonic structures have a mo

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McNab, Fergus, R. Alastair Sloan, and Richard T. Walker. "Simultaneous orthogonal shortening in the Afghan-Tajik Depression." Geology 47, no. 9 (2019): 862–66. http://dx.doi.org/10.1130/g46090.1.

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Abstract The Afghan-Tajik Depression is a sedimentary basin in the Alpine-Himalayan mountain chain. It is traversed by series of north-south arcuate folds, suggesting that the basin is undergoing east-west compression. A second set of folds in the south of the depression runs east-west, crosscutting those trending north-south. We present results from teleseismic body waveform inversion and depth phase modeling for five recent earthquakes, and from detailed mapping of structures related to active faulting based on satellite imagery and topographic data. We argue that both sets of folds are acti

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Goulet, Christine A., Yousef Bozorgnia, Nicolas Kuehn, et al. "NGA-East Ground-Motion Characterization model part I: Summary of products and model development." Earthquake Spectra 37, no. 1_suppl (2021): 1231–82. http://dx.doi.org/10.1177/87552930211018723.

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In this article, we present an overview of the research project NGA-East, Next Generation Attenuation for Central and Eastern North America (CENA), and summarize the key methodology and products. The project was tasked with developing a new ground motion characterization (GMC) model for CENA. The final NGA-East GMC model includes a set of 17 median ground motion models (GMMs) for peak ground acceleration and velocity (PGA, PGV) and response spectral ordinates for periods ranging from 0.01 to 10 s. The NGA-East GMMs are applicable to horizontal components of ground motions on very hard rock, fo

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Stewart, Jonathan P., Grace A. Parker, Gail M. Atkinson, David M. Boore, Youssef M. A. Hashash, and Walter J. Silva. "Ergodic site amplification model for central and eastern North America." Earthquake Spectra 36, no. 1 (2020): 42–68. http://dx.doi.org/10.1177/8755293019878185.

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The United States Geological Survey national seismic hazard maps have historically been produced for a reference site condition of VS30 = 760 m/s. For other site conditions, site factors are used, which heretofore have been developed using ground motion data and simulations for shallow earthquakes in active tectonic regions. Research results from the Next Generation Attenuation–East (NGA-East) project, as well as previous and contemporaneous related research, demonstrate different levels of site amplification in central and eastern North America (CENA) as compared to active regions. We provide

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Orecchio, Barbara, Silvia Scolaro, Josep Batlló, et al. "New Results for the 1968 Belice, South Italy, Seismic Sequence: Solving the Long-Lasting Ambiguity on Causative Source." Seismological Research Letters 92, no. 4 (2021): 2364–81. http://dx.doi.org/10.1785/0220200277.

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Abstract We present the first estimates of moment tensor solutions and probabilistic nonlinear hypocenter locations for the 1968 Belice earthquake sequence, which is the most relevant seismic activity occurred in western Sicily in historical times. This seismic phase, including six earthquakes with magnitude between 5 and 6.4, produced severe damages and fatalities in a sector of the Nubia–Eurasia plate margin, previously considered aseismic. Poorly constrained and often controversial hypocenter locations and focal mechanism solutions available from the literature have led to a long-lasting am

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J. Maria Shanthi. "Early Earthquake Prediction Using Machine Learning Technique for North Part of India Saving Human Life." Journal of Information Systems Engineering and Management 10, no. 51s (2025): 270–79. https://doi.org/10.52783/jisem.v10i51s.10387.

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An earthquake is a powerful natural disaster that causes the earth's surface to tremble abruptly. Earthquakes harm infrastructure and buildings, which impacts daily life. The originality of this work is that machine learning can be a powerful tool for early seismic impact prediction. With the use of six different machine learning classifiers—Artificial Neural Network, Random Tree, CHAID, Discriminant, XGBoost Tree, and Tree-AS—and six datasets from different regions of India, this understanding was evaluated. Every method has been applied to every dataset. The study intends to forecast future

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YADAV, Abhishek, Suresh KANNAUJIYA, Prashant Kumar CHAMPATI RAY, Rajeev Kumar YADAV, and Param Kirti GAUTAM. "Estimation of crustal deformation parameters and strain build-up in Northwest Himalaya using GNSS data measurements." Contributions to Geophysics and Geodesy 51, no. 3 (2021): 225–43. http://dx.doi.org/10.31577/congeo.2021.51.3.2.

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GPS measurements have proved extremely useful in quantifying strain accumulation rate and assessing seismic hazard in a region. Continuous GPS measurements provide estimates of secular motion used to understand the earthquake and other geodynamic processes. GNSS stations extending from the South of India to the Higher Himalayan region have been used to quantify the strain build-up rate in Central India and the Himalayan region to assess the seismic hazard potential in this realm. Velocity solution has been determined after the application of Markov noise estimated from GPS time series data. Th

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Kayal, J. R., and Dapeng Zhao. "Three-dimensional seismic structure beneath Shillong Plateau and Assam Valley, Northeast India." Bulletin of the Seismological Society of America 88, no. 3 (1998): 667–76. http://dx.doi.org/10.1785/bssa0880030667.

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Abstract Northeast India is bounded by the Himalayan arc to the north and the Burmese arc to the east. The Shillong Plateau and Assam Valley lie at the boundary zone of the two arcs. Three microearthquake surveys were conducted in this area from 1984 to 1986. We have applied a tomographic method to about 2800 high-quality P- and S-wave arrival times from 364 local earthquakes that were recorded in the magnitude range 2.0 to 4.0 by 22 temporary seismic stations during the surveys to determine the 3D velocity structure of the crust and upper mantle in this region. The result reveals significant

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Tremblay, Robert, and Gail M. Atkinson. "Comparative Study of the Inelastic Seismic Demand of Eastern and Western Canadian Sites." Earthquake Spectra 17, no. 2 (2001): 333–58. http://dx.doi.org/10.1193/1.1586178.

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The damage potential of earthquake ground motions compatible with site-specific 2% in 50 year uniform hazard spectra is compared at two North American sites in areas of moderate seismic hazard: Montreal, in the east, and Vancouver, along the west coast. For Vancouver, crustal, subcrustal and Cascadia subduction ground motion earthquake ensembles are considered. Nonlinear dynamic analyses of bi-linear single-degree-of-freedom oscillators exhibiting various ductility levels and damage laws were performed to determine R factors required to prevent structural collapse for each site and each system

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Baskoutas, Ioannis, George Popandopoulos, and Prasanta Chingtham. "Temporal variation of seismic parameters in the western part of the India-Eurasia plate collision zone." Research in Geophysics 1, no. 1 (2011): 3. http://dx.doi.org/10.4081/rg.2011.e3.

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We examined the temporal seismicity variation in the north-west Himalayas and the adjacent regions in relation to strong earthquake occurrences in the period 1970-2010. The aim was to promote seismic hazard assessment and to show the possibilities of strong earthquake forecasting by means of the FastBEE computer tool. The temporal variation of the seismicity is expressed in terms of three basic seismic parameters: the logarithm of the number of earthquakes logN, the seismic energy released in the mode logE2/3 and the b-value of the earthquake magnitude-frequency distribution expressed by the G

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Islami, Kleidi, Giovanni Tecchio, and Claudio Modena. "Seismic Intervention and Dynamic Testing of an Arch Bridge." Applied Mechanics and Materials 105-107 (September 2011): 1159–64. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.1159.

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This work presents the dynamic tests on a retrofitted masonry arch bridge. The Gresal Bridge, located in the North-East of Italy, was highly exposed to seismic hazard, due to the slenderness of its high piers. A retrofit intervention has been carried out, and a new rc slab has been built under the pavement, anchored to the piers with high strength vertical ties and restrained at the abutments, to create a new resistance arrangement withstanding inertial forces. The dynamic behaviour has been initially assessed with numerical models comparing the response of the bridge before and after the repa

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Güvercin, Sezim Ezgi, Hayrullah Karabulut, A. Özgün Konca, Uğur Doğan, and Semih Ergintav. "Active seismotectonics of the East Anatolian Fault." Geophysical Journal International 230, no. 1 (2022): 50–69. http://dx.doi.org/10.1093/gji/ggac045.

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SUMMARY The East Anatolian Fault (EAF) is a 700-km-long left-lateral transform fault located between the Anatolian and Arabian plates. The proximity of the Euler Pole to the Arabia–Anatolia Plate boundary leads to rapid changes in plate velocity along the boundary, which is manifested by the decreasing slip rates from east (10 mm yr–1) to west (∼1–4 mm yr–1). The EAF displays heterogeneous seismicity patterns with seismic gaps, localized clusters and broad diffuse zones. In this study, in order to understand the origin of these complexities and quantify the seismic hazard along the EAF, we pre

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Rost, S., G. A. Houseman, A. W. Frederiksen, et al. "Structure of the northwestern North Anatolian Fault Zone imaged via teleseismic scattering tomography." Geophysical Journal International 227, no. 2 (2021): 922–40. http://dx.doi.org/10.1093/gji/ggab265.

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SUMMARY Information on fault zone structure is essential for our understanding of earthquake mechanics, continental deformation and seismic hazard. We use the scattered seismic wavefield to study the subsurface structure of the North Anatolian Fault Zone (NAFZ) in the region of the 1999 İzmit and Düzce ruptures using data from an 18-month dense deployment of seismometers with a nominal station spacing of 7 km. Using the forward- and back-scattered energy that follows the direct P-wave arrival from teleseismic earthquakes, we apply a scattered wave inversion approach and are able to resolve cha

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Han, X., Y. Li, J. Du, X. Zhou, C. Xie, and W. Zhang. "Rn and CO<sub>2</sub> geochemistry of soil gas across the active fault zones in the capital area of China." Natural Hazards and Earth System Sciences Discussions 2, no. 2 (2014): 1729–57. http://dx.doi.org/10.5194/nhessd-2-1729-2014.

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Abstract. The present work is proposed to investigate the spatiotemporal variations of soil gas Rn and CO2 across the active faults in the capital area of China, for the understanding of fault activities and the assessment of seismic hazard. A total of 342 soil gas sampling sites were measured twice in 2011 and 2012 along seven profiles across four faults. The results of soil gas surveys show that in each profile, due to the variation of gas emission rate, the concentrations of Rn and CO2 changed in the vicinity of faults. Spatial distributions of Rn and CO2 in the study areas were different f

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Trivedi, Mansi, Aayushi Doshi, KshemaSara Koshy, and S. C. Mohan. "Comparative Study on Seismic Performance of Existing Building with and without Retrofitting Using Lateral Load Resisting Systems." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 807–14. http://dx.doi.org/10.38208/acp.v1.587.

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Due to the lack of awareness and practice of implementing earthquake resistant structures in the past, a huge number of buildings today do not comply with the existing/updated seismic codes in India. This issue is predominant in existing residential buildings which involves a high probability of loss of lives. The increase in population and clustered city areas make code non-compliance dangerous and risky especially in the Northern and North Eastern regions which come under seismic zones IV and V. Retrofitting strategies are thus an important aspect of building and life safety. This study invo

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Farajpour, Zoya, and Shahram Pezeshk. "A ground-motion prediction model for small-to-moderate induced earthquakes for Central and Eastern United States." Earthquake Spectra 37, no. 1_suppl (2021): 1440–59. http://dx.doi.org/10.1177/87552930211016014.

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This study presents a new ground motion model (GMM) for small-to-moderate potentially induced earthquakes for Central and Eastern United States (CEUS). We used a hybrid empirical model as the base model, which was developed and calibrated for tectonic events in Central and Eastern North America (CENA) as part of the Next-generation Attenuation-East (NGA-East) project. We calibrated the base model using a comprehensive database of potentially induced ground motions with smaller magnitudes and shallower depths than tectonic earthquakes, excluding all earthquake events and stations within the Gul

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