Low Cost Seismic Network Practical Applications for Producing Quick Shaking Maps in Taiwan
Journal
Terrestrial Atmospheric and Oceanic Sciences
Journal Volume
25
Journal Issue
5
Pages
617
Date Issued
2014
Author(s)
Chih-Yih Hsieh
Tai-Lin Chin
Kuan-Hung Kuo
Da-Yi Chen
Kai-Shyr Wang
Ya-Ting Chan
Wen-Yen Chang
Wei-Sen Li
Shaw-Hsung Ker
Abstract
Two major earthquakes of ML greater than 6.0 occurred in Taiwan in the first half of 2013. The vibrant shaking brought landslides, falling rocks and casualties. This paper presents a seismic network developed by National Taiwan University (NTU) with 401 Micro-Electro Mechanical System (MEMS) accelerators. The network recorded high quality strong motion signals from the two events and produced delicate shaking maps within one minute after the earthquake occurrence. The high shaking regions of the intensity map produced by the NTU system suggest damage and casualty locations. Equipped with a dense array of MEMS accelerometers, the NTU system is able to accommodate 10% signals loss from part of the seismic stations and maintain its normal functions for producing shaking maps. The system also has the potential to identify the rupture direction which is one of the key indices used to estimate possible damage. The low cost MEMS accelerator array shows its potential in real-time earthquake shaking map generation and damage avoidance. © 2014, Chinese Geoscience Union. All rights reserved.
Subjects
Damage earthquake; Earthquake; MEMS accelerometer; Shaking map
Type
journal article