Menyuan earthquake,Global positioning system (GPS),

Undulatory motion,Hilbert–Huang transform (HHT),Cross spectrum," /> GPS station short-term dynamic characteristics of micro displacement before Menyuan <em>M</em>6.4 earthquake

Geodesy and Geodynamics
  ISSN 1674-9847   CN 42-1806/P             RSS | Email Alerts  
        Home  |  About Journal  |  Editorial Board  |  Subscriptions  |  Contacts Us  | 
Geodesy and Geodynamics  2016, Vol. 7 Issue (4): 237-244    DOI: 10.1016/j.geog.2016.04.012
articles Current Issue | Next Issue | Archive | Adv Search Previous Articles  |  Next Articles  
GPS station short-term dynamic characteristics of micro displacement before Menyuan M6.4 earthquake
Wei Feng, Jinwei Ren, Zaisen Jiang

a Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China

b China Earthquake Networks Center, Beijing 100045, China

 Download: PDF (2932 KB)   HTML (1 KB)   Export: BibTeX | EndNote (RIS)      Supporting Info
Abstract Continuous observation data from 24 GPS stations are selected in the area (33.0°N–41.0°N, 95.0°E–105.0°E) for this study (the period is from Jan. 1, 2015 to Jan. 20, 2016). Three components, NS, EW and UD, of the daily solutions are filtered by the Hilbert–Huang transform (HHT) with frequency band of 5.787 × 10−7–7.716 × 10−8 Hz (20–150 days in period). And short-term dynamic characteristics of micro displacement before Menyuan M6.4 earthquake are studied by using the temporal dependencies and cross spectrum analysis. The results show that before the earthquake the horizontal undulatory motions are higher than the average level in the series data which indicate the disturbance feature of regional stress before the earthquake. Three GPS stations on Qinghai-Tibet Plateau with their setting perpendicular to the seismogenic fault have consistent movement. The increase of amplitude of the horizontal micro motion observed before the quake is conducive to the earthquake occurrence. However, we could not be sure if the undulatory motion triggered the earthquake. It is quite necessary to build more GPS continuous observation stations and optimize the monitoring network so as to improve the understanding of the short-term dynamic crustal variation before earthquake.
Service
E-mail this article Menyuan earthquake|Global positioning system (GPS)|

Undulatory motion|Hilbert–Huang transform (HHT)|Cross spectrum

”. Please open it by linking:" name=neirong>
E-mail Alert
RSS
Articles by authors
Key wordsMenyuan earthquake')" href="#">

Menyuan earthquake   Global positioning system (GPS)   Undulatory motion')" href="#">

Undulatory motion   Hilbert–Huang transform (HHT)   Cross spectrum     

Cite this article:   
. GPS station short-term dynamic characteristics of micro displacement before Menyuan M6.4 earthquake [J]. Geodesy and Geodynamics, 2016, 7(4): 237-244.
 
No references of article
[1] Pyae Sone Aung, Chalermchon Satirapod, Constantin-Octavian Andrei. Sagaing Fault slip and deformation in Myanmar observed by continuous GPS measurements [J]. Geodesy and Geodynamics, 2016, 7(1): 56-63.
Copyright © 2011 Geodesy and Geodynamics
Support by Beijing Magtech Co.ltd support@magtech.com.cn