Premium
Broadband Velocities and Displacements From Integrated GPS and Accelerometer Data for High‐Rate Seismogeodesy
Author(s) -
Shu Yuanming,
Fang Rongxin,
Geng Jianghui,
Zhao Qile,
Liu Jingnan
Publication year - 2018
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2018gl079425
Subject(s) - global positioning system , accelerometer , broadband , geology , aliasing , remote sensing , geodesy , seismology , waveform , computer science , assisted gps , acoustics , telecommunications , physics , radar , undersampling , operating system
We present a new method of integrating Global Positioning System (GPS) and accelerometer data for high‐rate seismogeodesy. This method is based on the GPS variometric approach which can obtain seismic waves in real time using only the readily available broadcast products and a single receiver. Collocated 1‐Hz GPS and 200‐Hz accelerometer data from the 2016 M W 7.8 Kaikōura earthquake were analyzed to verify the effectiveness of this method. Results reveal that this method can provide broadband and more accurate velocities and displacements qualified to detect P wave arrivals. Moreover, this method can effectively avoid the aliasing problem present in the 1‐Hz GPS waveforms. We therefore conclude that this new method can be a powerful tool to capture seismic waves in real time, which is crucial for the purpose of tsunami early warning and earthquake rapid response.