Title
How Well Can We Extract the Permanent Displacement from Low-Cost MEMS Accelerometers?
Abstract
Following the recent establishment of a high-density seismic network equipped with low-cost micro-electro-mechanical system (MEMS) P-wave-alert-device (P-Alert) by the earthquake early warning (EEW) research group at the National Taiwan University, a large quantity of strong-motion records from moderate-magnitude earthquakes (M-L > 6) around Taiwan has been accumulated. Using a data preprocessing scheme to recover the dynamic average embedded within the P-Alert data, we adopted an automatic baseline correction approach for the P-Alert accelerograms to determine the coseismic deformation (Cd). Comparisons between the Cd values determined using global positioning system (GPS) data, strong-motion records from the P-Alert network, and data from the Taiwan Strong Motion Instrumentation Program (TSMIP) demonstrates that the near-real-time determination of Cd values (>2 cm), which provide crucial information for seismic hazard mitigation, is possible using records from low-cost MEMS accelerometers.
Year
DOI
Venue
2017
10.3390/s17112643
SENSORS
Keywords
Field
DocType
low-cost MEMS accelerometers,earthquake permanent displacement,seismic hazard mitigation,P-Alert
Geotechnical engineering,Warning system,Microelectromechanical systems,Accelerometer,Data pre-processing,Electronic engineering,Global Positioning System,Engineering,Geodesy,Seismic hazard,Instrumentation
Journal
Volume
Issue
ISSN
17
11.0
1424-8220
Citations 
PageRank 
References 
1
0.67
0
Authors
5
Name
Order
Citations
PageRank
Jyh Cherng Jan110.67
Wei-An Chao211.00
Y. Wu342.54
Chien-Chih Chen411120.42
Cheng-Horng Lin541.56