Seismo-ionospheric precursor of the 2008 Mw7.9 Wenchuan earthquake observed by FORMOSAT-3/COSMIC

被引：0
作者：
Chun-Chieh Hsiao
J. Y. Liu
K.-I. Oyama
N. L. Yen
Y. A. Liou
S. S. Chen
J. J. Miau
机构：
[1] National Space Organization,Institute of Space Science
[2] National Central University,Center for Space and Remote Sensing Research
[3] National Central University,undefined
来源：
GPS Solutions | 2010年 / 14卷
关键词：
FORMOSAT3/COSMIC; Ionosphere; Earthquake; Satellite; GPS; Radio occultation;
D O I：
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中图分类号：
学科分类号：
摘要：
The seismo-ionospheric precursor prior to the Mw7.9 earthquake near Wenchuan, China, on 12 May 2008 was observed by the FORMOSAT-3/COSMIC satellite constellation. By binning radio occultation observations, the three-dimensional ionospheric structure can be obtained to monitor the ionospheric electron density variation prior to the earthquake. It has been determined that near the epicenter the F2-peak height, hmF2, descends about 25 km and the F2-peak electron density, NmF2, decreases about 2 × 105 el/cm3 around noon within 5 days prior to the earthquake. The integrated electron content decreases more than 2 TECU between 250 and 300 km altitude.
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页码：83 / 89
页数：6
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