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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18813
Title: Multi-parameter based algorithm in eew
Authors: Bhardwaj R.
Sharma M.L.
Kumar A.
Published in: Proceedings of NCEE 2014 - 10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering
Abstract: In the present study an attempt has been made to develop an Earthquake Early Warning (EEW) algorithm which has been based on different EEW parameters such as average period (τ<inf>c</inf>), Maximum Predominant Period (τ<inf>p</inf>max), Peak Displacement (P<inf>d</inf>), Cumulative Absolute Velocity (CAV), and Root Sum Of Squares Cumulative Velocity (RSSCV). These parameters are calculated from the initial portion of primary wave (P-wave) after the onset (P-onset). In the present study, not only the individual parameters but also various combinations of EEW parameters have been attempted to issue alarm for potentially damaging event, with reliable accuracy in minimal time window using Kyoshin Network (K-NET) dataset. The criterion for issuing warning is based on the alarm status of nearest four stations within selected epicentral distance of the event. Out of these four when three stations cross the preset threshold value of an EEW parameter, alarm is issued. The alarms have been classified in four different types such as Correct Alarm (CA), Missed Alarm (MA), Correct All Clear (CAC), and False Alarm (FA). Further, alarm classification has been based on two types: Correct Detection (CD) and Incorrect Alarm (ICA). Based on the rate of types of alarm the best possible combination of EEW parameters have been searched for reliable, accurate and fast warning estimation. The parametric analysis of different possible combinations of EEW parameters preference based approach at different time windows have been made. Finally, it has been observed that three EEW parameter preference based approach at a time window of 4 sec provides most efficient EEW algorithm approach.
Citation: Proceedings of NCEE 2014 - 10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering, (2014)
URI: https://doi.org/10.4231/D30863603
http://repository.iitr.ac.in/handle/123456789/18813
Issue Date: 2014
Publisher: Earthquake Engineering Research Institute
Keywords: Alarm systems
Algorithms
Earthquakes
Engineering geology
Seismic waves
Vehicle routing
Algorithm approaches
Cumulative absolute velocities
Different time windows
Earthquake early warning
Epicentral distances
Parametric -analysis
Pe
Author Scopus IDs: 55571258400
7403269008
57203774508
Author Affiliations: Bhardwaj, R., Dept. of Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Sharma, M.L., Dept. of Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Kumar, A., Dept. of Earthquake
Appears in Collections:Conference Publications [EQ]

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