Ionospheric foF2 and TEC anomalous days associated with M≥5.0 earthquakes in Taiwan during 1997-1999

Jann Yenq Liu; Yuh Ing Chen; Hau Kun Jhuang; Yu Hsiang Lin

doi:10.3319/TAO.2004.15.3.371(EP)

Ionospheric foF2 and TEC anomalous days associated with M≥5.0 earthquakes in Taiwan during 1997-1999

Jann Yenq Liu, Yuh Ing Chen, Hau Kun Jhuang, Yu Hsiang Lin

Research output: Contribution to journal › Article › peer-review

84 Scopus citations

Abstract

In this paper, we examine variations in the critical frequency foF2 recorded by an ionosonde, and the total electron content (TEC) derived from a network of 5 ground-based receivers of the global positioning system (GPS), as well as occurrences of 144 M ≥ 5.0 earthquakes in Taiwan during 1997 - 1999. Results show that the foF2 and TEC yield similar tendencies, and often concurrently register pronounced decrease anomalies 4 days before the earthquakes. A detailed investigation of anomalies appearing before and after the earthquakes confirms significant decreases in the FoF2 and TEC to be the pre-earthquake anomalies.

Original language	English
Pages (from-to)	371-383
Number of pages	13
Journal	Terrestrial, Atmospheric and Oceanic Sciences
Volume	15
Issue number	3
DOIs	https://doi.org/10.3319/TAO.2004.15.3.371(EP)
State	Published - Sep 2004

Keywords

Earthquake
GPS
Global positioning system
Ionosonde
Ionosphere
TEC
Total electron content

Access to Document

10.3319/TAO.2004.15.3.371(EP)

Cite this

@article{b77f24e2165a4517a717ef5a8b72465f,

title = "Ionospheric foF2 and TEC anomalous days associated with M≥5.0 earthquakes in Taiwan during 1997-1999",

abstract = "In this paper, we examine variations in the critical frequency foF2 recorded by an ionosonde, and the total electron content (TEC) derived from a network of 5 ground-based receivers of the global positioning system (GPS), as well as occurrences of 144 M ≥ 5.0 earthquakes in Taiwan during 1997 - 1999. Results show that the foF2 and TEC yield similar tendencies, and often concurrently register pronounced decrease anomalies 4 days before the earthquakes. A detailed investigation of anomalies appearing before and after the earthquakes confirms significant decreases in the FoF2 and TEC to be the pre-earthquake anomalies.",

keywords = "Earthquake, GPS, Global positioning system, Ionosonde, Ionosphere, TEC, Total electron content",

author = "Liu, {Jann Yenq} and Chen, {Yuh Ing} and Jhuang, {Hau Kun} and Lin, {Yu Hsiang}",

year = "2004",

month = sep,

doi = "10.3319/TAO.2004.15.3.371(EP)",

language = "???core.languages.en_GB???",

volume = "15",

pages = "371--383",

journal = "Terrestrial, Atmospheric and Oceanic Sciences",

issn = "1017-0839",

number = "3",

}

TY - JOUR

T1 - Ionospheric foF2 and TEC anomalous days associated with M≥5.0 earthquakes in Taiwan during 1997-1999

AU - Liu, Jann Yenq

AU - Chen, Yuh Ing

AU - Jhuang, Hau Kun

AU - Lin, Yu Hsiang

PY - 2004/9

Y1 - 2004/9

N2 - In this paper, we examine variations in the critical frequency foF2 recorded by an ionosonde, and the total electron content (TEC) derived from a network of 5 ground-based receivers of the global positioning system (GPS), as well as occurrences of 144 M ≥ 5.0 earthquakes in Taiwan during 1997 - 1999. Results show that the foF2 and TEC yield similar tendencies, and often concurrently register pronounced decrease anomalies 4 days before the earthquakes. A detailed investigation of anomalies appearing before and after the earthquakes confirms significant decreases in the FoF2 and TEC to be the pre-earthquake anomalies.

AB - In this paper, we examine variations in the critical frequency foF2 recorded by an ionosonde, and the total electron content (TEC) derived from a network of 5 ground-based receivers of the global positioning system (GPS), as well as occurrences of 144 M ≥ 5.0 earthquakes in Taiwan during 1997 - 1999. Results show that the foF2 and TEC yield similar tendencies, and often concurrently register pronounced decrease anomalies 4 days before the earthquakes. A detailed investigation of anomalies appearing before and after the earthquakes confirms significant decreases in the FoF2 and TEC to be the pre-earthquake anomalies.

KW - Earthquake

KW - GPS

KW - Global positioning system

KW - Ionosonde

KW - Ionosphere

KW - TEC

KW - Total electron content

UR - http://www.scopus.com/inward/record.url?scp=7244224895&partnerID=8YFLogxK

U2 - 10.3319/TAO.2004.15.3.371(EP)

DO - 10.3319/TAO.2004.15.3.371(EP)

M3 - 期刊論文

AN - SCOPUS:7244224895

SN - 1017-0839

VL - 15

SP - 371

EP - 383

JO - Terrestrial, Atmospheric and Oceanic Sciences

JF - Terrestrial, Atmospheric and Oceanic Sciences

IS - 3

ER -

Ionospheric foF2 and TEC anomalous days associated with M≥5.0 earthquakes in Taiwan during 1997-1999

Abstract

Keywords

Access to Document

Fingerprint

Cite this