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

Chun Chieh Hsiao; J. Y. Liu; K. I. Oyama; N. L. Yen; Y. A. Liou; S. S. Chen; J. J. Miau

doi:10.1007/s10291-009-0129-0

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

Chun Chieh Hsiao, J. Y. Liu, K. I. Oyama, N. L. Yen, Y. A. Liou, S. S. Chen, J. J. Miau

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40 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	83-89
Number of pages	7
Journal	GPS Solutions
Volume	14
Issue number	1
DOIs	https://doi.org/10.1007/s10291-009-0129-0
State	Published - Jan 2010

Keywords

Earthquake
FORMOSAT3/COSMIC
GPS
Ionosphere
Radio occultation
Satellite

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10.1007/s10291-009-0129-0

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

abstract = "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.",

keywords = "Earthquake, FORMOSAT3/COSMIC, GPS, Ionosphere, Radio occultation, Satellite",

author = "Hsiao, {Chun Chieh} and Liu, {J. Y.} and Oyama, {K. I.} and Yen, {N. L.} and Liou, {Y. A.} and Chen, {S. S.} and Miau, {J. J.}",

note = "Funding Information: Acknowledgments The authors thank the FORMOSAT-3/COSMIC operation team in National Space Organization (NSPO) for operating the satellite constellation. NSPO is supported by the National Science Council of Taiwan. The authors wish to thank the editor and reviewer for their constructive comments and useful suggestions.",

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doi = "10.1007/s10291-009-0129-0",

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T1 - Seismo-ionospheric precursor of the 2008 Mw7.9 Wenchuan earthquake observed by FORMOSAT-3/COSMIC

AU - Hsiao, Chun Chieh

AU - Liu, J. Y.

AU - Oyama, K. I.

AU - Yen, N. L.

AU - Liou, Y. A.

AU - Chen, S. S.

AU - Miau, J. J.

N1 - Funding Information: Acknowledgments The authors thank the FORMOSAT-3/COSMIC operation team in National Space Organization (NSPO) for operating the satellite constellation. NSPO is supported by the National Science Council of Taiwan. The authors wish to thank the editor and reviewer for their constructive comments and useful suggestions.

PY - 2010/1

Y1 - 2010/1

N2 - 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.

AB - 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.

KW - Earthquake

KW - FORMOSAT3/COSMIC

KW - GPS

KW - Ionosphere

KW - Radio occultation

KW - Satellite

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DO - 10.1007/s10291-009-0129-0

M3 - 期刊論文

AN - SCOPUS:71249113118

SN - 1080-5370

VL - 14

SP - 83

EP - 89

JO - GPS Solutions

JF - GPS Solutions

IS - 1

ER -

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

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Keywords

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