caa a22 4500 606162135 CHVBK 20210128100637.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10291-013-0362-4 doi (NATIONALLICENCE)springer-10.1007/s10291-013-0362-4 Real-time high-precision earthquake monitoring using single-frequency GPS receivers [Elektronische Daten] [Min Li, Wenwen Li, Rongxin Fang, Chuang Shi, Qile Zhao] We present a new method for high-precision real-time earthquake monitoring that focuses on station velocity using single-frequency GPS receivers. By means of GPS absolute velocity determination (AVD), real-time station velocity of millimeter per second precision can be obtained epoch by epoch using the GPS broadcast ephemeris. While the monitoring stations are considered stationary during aseismic time, the coseismic displacement can be instantaneously recorded by the velocity changes. The 1-Hz GPS data at selected stations during the M w 8.0 Wenchuan earthquake, the M w 9.0 Tohoku-Oki earthquake and the M w 6.6 Lushan earthquake are processed with the AVD approach. The results indicate that the phase and amplitude of AVD-derived velocity time series induced by the earthquakes coincide with those derived from post-mission kinematic PPP approach. Even when coseismic displacements at some stations are occasionally not visible in the position time series, the velocity series can still clearly manifest the earthquake displacement signal. With the AVD approach, the precision and reliability of the real-time monitoring can be improved significantly. It is also indicated the velocity series can be used for fast post-earthquake assessment such as rapid determination of earthquake magnitude, locating epicenter, determining seismic wave propagation velocity and other earthquake studies. Springer-Verlag Berlin Heidelberg, 2014 Real-time earthquake monitoring nationallicence GPS absolute velocity determination nationallicence Single-frequency GPS receivers nationallicence Coseismic displacement nationallicence Li Min GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut Li Wenwen GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut Fang Rongxin GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut Shi Chuang GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut Zhao Qile GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut GPS Solutions Springer Berlin Heidelberg 19/1(2015-01-01), 27-35 1080-5370 19:1<27 2015 19 10291 https://doi.org/10.1007/s10291-013-0362-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10291-013-0362-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Min GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Li Wenwen GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Fang Rongxin GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Shi Chuang GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Zhao Qile GNSS Research Center, Wuhan University, 129 Luoyu Road, 430079, Wuhan, China aut NATIONALLICENCE 773 0- GPS Solutions Springer Berlin Heidelberg 19/1(2015-01-01), 27-35 1080-5370 19:1<27 2015 19 10291