Earthquake Early Warning System: Its Relevance for India

Kumar, Ashok; Chamoli, Bhanu Pratap; Pandey, Bhavesh; Kumar, Pankaj; Rathore, Govind

doi:10.1007/978-981-19-2324-1_9

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…where, Pd is the maximum amplitude in the first 3 seconds of the arrival window (also referred to as 'Peak displacement'), 𝑅 = √𝑑 2 + ℎ 2 is hypocentral distance, where d is epicentral distance, and h is the depth of the focus. The coefficients A, B, and C are region-specific and are estimated to be 0.35, 0.06, and 0.15, respectively, using earthquake records from 2005 to 2020 in the Uttarakhand region (Kumar, 2020). The final magnitude is the weighted sum of MPd for individual stations (Chen et al, 2015).…”

Section: Phase Detection and Location Inversionmentioning

confidence: 99%

Near Real-time Detection and Moment Tensor Inversion of the May 11, 2022, Dharchula Earthquake

Kumar,

Silwal,

Mahanta

et al. 2023

Preprint

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On May 11, 2022, an Mw-5.2 earthquake occurred in the Dharchula region of Uttarakhand Himalayas, India. The Uttarakhand State Earthquake Early Warning System (UEEWS) detected and transmitted the warning within 13.61 seconds of the origin, taking only 6.25 seconds for processing, location and magnitude estimation, and warning dissemination. The complete analysis is performed using three seconds of waveforms. Using the initial earthquake parameters provided by the UEEWS, moment tensor inversion is performed using broadband seismometer network installed in northern India. The moment tensor (MT) inversion has been performed for the event using both the body waves and the surface waves. The paper discusses the importance of real-time event detection and efforts towards real-time MT source inversion of earthquakes in the Uttarakhand Himalayas.

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Section: Phase Detection and Location Inversionmentioning

confidence: 99%