Dingwen Zhang
Dingwen Zhang
*This is an algorithmically generated author record based on publicly available information.
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Dingwen Zhang has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Jiale Li
Institute of Disaster Prevention, Sanhe 065201, China
1 shared publication - Jianjun Wang
National Institute of Nature Hazards, Ministry of Emergency Management of China, Beijing 100085, China
1 shared publication - Jihua Fu
National Institute of Nature Hazards, Ministry of Emergency Management of China, Beijing 100085, China
1 shared publication - Linyue Wang
National Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, China
1 shared publication - Zhitao Li
National Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing, China
1 shared publication
Latest Publications
- Open Access
A Synchronous Magnitude Estimation with P-Wave Phases’ Detection Used in Earthquake Early Warning System
How to estimate an earthquake’s magnitude rapidly and accurately is a challenge for any earthquake early warning system. In order to reach a balance between accuracy and timeliness, a synchronous magnitude estimation method with P-wave phases’ detection is proposed. In this method, the P-wave phases are detected by the changes of the signal-to-noise ratio (SNR) of the seismic records, where the SNRs are calculated by the short-term power and long-term power ratio (STP/LTP). Meanwhile, the variations of the SNR are applied to estimate the magnitude of the earthquake. By the statistics of some earthquake cases, a synchronous magnitude estimation model of the variation of the P-wave phases’ SNR, the earthquake magnitude, and the hypocentral distance was built. Compared with some other magnitude estimation methods, the suggested method inherits the robustness of the STP/LTP method and is more accurate and rapid than the peak displacement () method.Open AccessA Synchronous Magnitude Estimation with P-Wave Phases’ Detection Used in Earthquake Early Warning System
How to estimate an earthquake’s magnitude rapidly and accurately is a challenge for any earthquake early warning system. In order to reach a balance between accuracy and timeliness, a synchronous magnitude estimation method with P-wave phases’ detection is proposed. In this method, the P-wave phases are detected by the changes of the signal-to-noise ratio (SNR) of the seismic records, where the SNRs are calculated by the short-term power and long-term power ratio (STP/LTP). Meanwhile, the variations of the SNR are applied to estimate the magnitude of the earthquake. By the statistics of some earthquake cases, a synchronous magnitude estimation model of the variation of the P-wave phases’ SNR, the earthquake magnitude, and the hypocentral distance was built. Compared with some other magnitude estimation methods, the suggested method inherits the robustness of the STP/LTP method and is more accurate and rapid than the peak displacement () method.