Ionospheric disturbances triggered by the Mw 7.6 earthquake off the coast of El Salvador on 13 January 2001

Ting Kuo Jung, Jann Yeng Liu, Ho Fang Tsai, Bor Shouh Huang, Cheng Horng Lin, Shui Beih Yu, Yih Shiung Yeh

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A network of five ground-based receivers of the global positioning system (GPS) was use to detect seismo-ionospheric disturbances in the total electron content (TEC) triggered by the 13 January 2001 EI Salvador Mw 7.6 earthquake. We apply least square fitted analysis as well as beam forming and ray tracing methods to analyze the GPS TECs. Results show that the average speeds of the seismo-ionospheric disturbances traveling in the upper atmosphere and ionosphere lie between 360 and 570 m s-1, and the disturbance origins on the ground derived by the two methods are near the epicenter reported by the U.S. Geological Survey (USGS).

Original languageEnglish
Pages (from-to)345-351
Number of pages7
JournalTerrestrial, Atmospheric and Oceanic Sciences
Issue number2
StatePublished - Jun 2006


  • Beam forming method
  • Ionosphere
  • Ray tracing method
  • Space seismometer


Dive into the research topics of 'Ionospheric disturbances triggered by the M<sub>w</sub> 7.6 earthquake off the coast of El Salvador on 13 January 2001'. Together they form a unique fingerprint.

Cite this