Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/nhess-2016-11
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
26 Jan 2016
Review status
This discussion paper is a preprint. A revision of the manuscript for further review has not been submitted.
First GPS TEC maps of ionospheric disturbances induced by reflected tsunami waves: The Tohoku case study
L. Tang1,2, Y. Zhao1, and J. An3 1Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan 430071, China
2School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
3Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China
Abstract. The straight tsunami waves from epicenter can be reflected when they reach to coasts or underwater obstacles. In this study, we present the first ionospheric maps of reflected tsunami signature caused by the great 11 March 2011 Tohoku earthquake using the dense GPS network GEONET in Japan. We observed tsunami-like travelling ionospheric disturbances (TIDs) with similar propagation characteristics in terms of waveform, horizontal velocity, direction, period and arrival time compared to the reflected tsunami at the sea-level, indicating the TIDs are induced by the reflected tsunami. The results confirm the atmospheric internal gravity waves (IGWs) produced by reflected tsunami can also propagate upward to the atmosphere and interact with the plasma at the ionospheric height.

Citation: Tang, L., Zhao, Y., and An, J.: First GPS TEC maps of ionospheric disturbances induced by reflected tsunami waves: The Tohoku case study, Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2016-11, in review, 2016.
L. Tang et al.
Interactive discussionStatus: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
 
RC1: 'review comments', Anonymous Referee #1, 17 Feb 2016 Printer-friendly Version Supplement 
 
RC2: 'Comments to the authors', Anonymous Referee #2, 19 Apr 2016 Printer-friendly Version Supplement 
L. Tang et al.
L. Tang et al.

Viewed

Total article views: 384 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
248 121 15 384 11 16

Views and downloads (calculated since 26 Jan 2016)

Cumulative views and downloads (calculated since 26 Jan 2016)

Saved

Discussed

Latest update: 17 Nov 2017
Publications Copernicus
Download
Short summary
Previous studies focused on the ionospheric signature induced by straight tsunami waves. In this study, we apply the two-dimensional TEC maps derived from a dense GPS network (GEONET) to detect the reflected tsunami signature in ionosphere after the 2011 Tohoku earthquake. The results indicate not only the straight tsunami waves from mainshock, but also the reflected tsunami waves might have potential to induce ionospheric disturbances.
Previous studies focused on the ionospheric signature induced by straight tsunami waves. In this...
Share