Earthquake Science

, Volume 26, Issue 3–4, pp 259–265

Investigation of Lushan earthquake ionosphere VTEC anomalies based on GPS data

  • Weiping Jiang
  • Yifang Ma
  • Hongfei Liu
  • Liansheng Deng
  • Xiaohui Zhou
Research Paper

DOI: 10.1007/s11589-013-0013-4

Cite this article as:
Jiang, W., Ma, Y., Liu, H. et al. Earthq Sci (2013) 26: 259. doi:10.1007/s11589-013-0013-4

Abstract

Vertical total electron content (VTEC) time series were obtained from 22 GPS stations near the epicenter of the Lushan earthquake. In this paper, we have adopted a sliding average method to detect and analyze anomalous VTEC associated with the earthquake. The results show that significant, negative ionosphere VTEC anomalies appeared over the 5 days before the earthquake, and on the day when earthquake occurred. The maximum value of VTEC anomalies that exceeded the lower bound reached 20 TECU. The spatial distribution of VTEC anomalies showed a conjugate structure, which shifted to the magnetic equator, and subsequently moved westwards.

Keywords

Lushan earthquake Vertical total electron content (VTEC) Anomalous perturbation GPS 

Copyright information

© The Seismological Society of China, Institute of Geophysics, China Earthquake Administration, and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Weiping Jiang
    • 1
  • Yifang Ma
    • 1
  • Hongfei Liu
    • 3
  • Liansheng Deng
    • 2
  • Xiaohui Zhou
    • 2
  1. 1.Research Center of GNSSWuhan UniversityWuhanChina
  2. 2.School of Geodesy and GeomaticsWuhan UniversityWuhanChina
  3. 3.Administration of Surveying, Mapping and Geoinformation of Yunan ProvinceYunan Province Administration of Surveying, Mapping and GeoinformationKunmingChina

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