Strong Motion Modelling of the 1999 Izmit Earthquake Using Site Effect in a Semi-Empirical Technique: A More Realistic Approach

Sandeep, .; Devi, Sonia; Kumar, Parveen; Monika, .; Kumar, Rishabh

doi:10.1007/s00024-022-02947-8

Cited by 9 publications

(2 citation statements)

References 54 publications

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“…Strong motion data from the network operated by WIHG in the Himalaya have been used to quantify seismic hazard assessment in the form of attenuation, site effects, and simulation of strong ground motion for different sectors of the Himalaya, e.g. Garhwal and Kumaun (Uttarakhand), Kinnaur (Himachal Pradesh), Nubra-Shyok (Ladakh), and NE India (Sandeep et al, 2019a(Sandeep et al, , 2019b(Sandeep et al, , 2019c(Sandeep et al, , 2020(Sandeep et al, , 2022Kumar P., et al, 2019). This work provides great insight into exploring recent trends in seismology and earthquake engineering for seismic hazard evaluation.…”

Section: Seismic Hazard Risk and Strong Ground Motion Studiesmentioning

confidence: 99%

INSA National Report on Seismological Research in India: 2019 – 2022

Manglik

2023

Preprint

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The Indian National Science Academy (INSA), the National Adhering body representing India in the International Union of Geodesy and Geophysics (IUGG), submits a National Report to the IUGG during its General Assembly, held every four years. The present chapter is a compilation for the International Association of Seismology and Physics of the Earth's Interior (IASPEI), one of the eight Associations of the IUGG, encompassing the scientific activities carried out in the country during 2019-2022, in the field of seismology. The chapter is arranged to categorize the contributions under internal structure of the Indian lithosphere and sub-lithospheric mantle, crust and upper mantle deformation, seismic attenuation, seismic hazards, triggered seismicity, environmental seismology, paleoseismology and seismological networks. In addition, the chapter includes activities related to societal projects and outreach programs. It is not an exhaustive review of the entire Indian contribution to seismology and allied fields during this period but a window to the topics covered within the framework of IASPEI.During the reporting period, researchers from several Indian R&D and Academic Institutions continued adding new results on the crustal and upper mantle structure of the Indian shield, both at regional and geological province scale. The Himalaya has been a major focus of seismological research for many Institutes who operated broadband seismological networks from Kashmir to Arunachal along the Himalayan arc. The data from these networks have facilitated in enhancing our understanding of the structure of the Main Himalayan Thrust, crustal and upper mantle structure as well as the dip of the underthrusting Indian plate, seismicity monitoring, and estimation of attenuation. Some of these networks also include accelerographs for strong ground motion studies. A few studies also focused on mapping of the mantle transition zone beneath the Indian Ocean Geoid Low. The studies on anthropogenic seismicity added near-field investigations in the Koyna -Warna region through borehole seismology. Organization of the Joint Scientific Assembly of IAGA and IASPEI during 21-27 August 2021 (JSA-2021) was a major event during this period related to the IUGG activities. Originally, the event was planned to be hosted at Hyderabad, India, but due to the COVID-19 pandemic it was organized in virtual mode. Initiatives have been taken to nucleate the field of environmental seismology in the country.

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Section: Seismic Hazard Risk and Strong Ground Motion Studiesmentioning

confidence: 99%

INSA National Report on Seismological Research in India: 2019 – 2022

Manglik

2023

Preprint

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“…Bommer et al [6] established a shallow crustal ground motion prediction model, offering a reliable tool and parameters for nonlinear dynamic analysis. In addition to these studies, there are also other aspects that have been explored or can be explored using Turkey's strong motion data, such as site effects [7], source characteristics [8], seismic wave propagation [9], seismic intensity [10], seismic risk mapping [11], seismic early warning [12], seismic resilience [13], etc. These aspects are important for advancing the scientific knowledge and practical applications of strong motion data in Turkey and beyond.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Peak Ground Acceleration and Seismogenic Fault Characteristics of the Mw7.8 Earthquake in Turkey

Duan,

Bo,

Peng

et al. 2023

Applied Sciences

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A Mw7.8 earthquake struck Turkey on 6 February 2023, causing severe casualties and economic losses. This paper investigates the characteristics of strong ground motion and seismogenic fault of the earthquake. We collected and processed the strong ground motion records of 379 stations using Matlab, SeismoSignal, and Surfer software: Matlab (Version R2016a), SeismoSignal (Version 5.1.0), and Surfer (Version 23.0.15), and obtained the peak ground acceleration (PGA) contour map. We analyzed the near-fault effect, the fault locking segment effect, and the trampoline effect of the earthquake based on the spatial distribution of PGA, the fault geometry, and slip distribution. We found that the earthquake generated a very strong ground motion concentration effect in the near-fault area, with the maximum PGA exceeding 2000 cm/s2. However, the presence of fault locking segments influenced the spatial distribution of ground motion, resulting in four significant PGA high-value concentration areas at a local dislocation, a turning point, and the end of the East Anatolian Fault. We also revealed for the first time the typical manifestation of the trampoline effect in this earthquake, which was characterized by a large vertical acceleration with a positive direction significantly larger than the negative direction. This paper provides an important reference for understanding the seismogenic mechanism, damage mode, characteristics, and strong earthquake law of the Turkey earthquake.

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Investigation of local site effect considering the recordings of the 08.11.2021 earthquake event in Konya, Turkey

Guzel

GÜZEL

2022

Nat Hazards

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Strong Motion Modelling of the 1999 Izmit Earthquake Using Site Effect in a Semi-Empirical Technique: A More Realistic Approach

Cited by 9 publications

References 54 publications

INSA National Report on Seismological Research in India: 2019 – 2022

INSA National Report on Seismological Research in India: 2019 – 2022

Analysis of Peak Ground Acceleration and Seismogenic Fault Characteristics of the Mw7.8 Earthquake in Turkey

Investigation of local site effect considering the recordings of the 08.11.2021 earthquake event in Konya, Turkey

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