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http://dx.doi.org/10.12652/Ksce.2021.41.5.0513

Comparative Analysis of Seismic Records Observed at Seismic Stations and Smartphone MEMS Sensors  

Jang, Dongil (Hanyang University)
Ahn, Jae-Kwang (Korea Meteorological Administration)
Kwon, Youngwoo (Kyungpook National University)
Kwak, Dongyoup (Hanyang University ERICA)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.41, no.5, 2021 , pp. 513-522 More about this Journal
Abstract
A smartphone (SMP) includes a MEMS sensor that can record 3-components motions and has a wireless network device to transmit data in live. These features and relatively low maintenance costs are the advantage of using SMPs as an auxiliary seismic observation network. Currently, 279 SMPs are monitoring seismic motions. In this study, we compare the SMP records with the seismic station (SS) records to validate SMP records. The data used for comparison are records for five earthquakes that occurred in 2019, which are 321 SS data recorded by the Korea Meteorological Administration and the Korea Institute of Geoscience and Mineral Resources and 145 recorded by SMPs. The analysis shows that the event-term corrected average residual of the SMP MEMS sensor records is 0.59 which indicating that the peak horizontal acceleration by SMP is 1.8 factor bigger than the peak ground acceleration by SS. In addition, the residuals tend to decrease as the installation floor of the smartphone MEMS sensor increases, which is the similar trend with response spectra from SS.
Keywords
Smartphone; MEMS Sensor; PGA; Seismic motion; Residual analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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