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Discussion papers | Copyright
https://doi.org/10.5194/nhess-2016-172
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 23 Jun 2016

Research article | 23 Jun 2016

Review status
This discussion paper is a preprint. It has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). The revised manuscript was not accepted.

Atmospheric and ionospheric coupling phenomena related to large earthquakes

M. Parrot1, V. Tramutoli2, Tiger J. Y. Liu3, S. Pulinets4, D. Ouzounov5, N. Genzano2, M. Lisi2, K. Hattori6, and A. Namgaladze7 M. Parrot et al.
  • 1LPC2E/CNRS, France
  • 2University of Basilicata, Italy
  • 3National Central University, Taiwan
  • 4Space Research Institute, Russia
  • 5Chapman University, USA
  • 6Graduate School of Science, Chiba University, Japan
  • 7Murmansk State Technical University, Russia

Abstract. This paper explores multi-instrument space-borne observations in order to validate physical concepts of Lithosphere-Atmosphere-Ionosphere Coupling (LAIC) in relation to major seismic events. In this study we apply already validated observation to identify atmospheric and ionospheric precursors associated with some of recent most destructive earthquakes: M8.6 of March 25, 2005 and M8.5 September 15, 2007 in Sumatra, and M7.9 May 12, 2008 in Wenchuan, China. New investigations are also presented concerning these three earthquakes and for the M7.3 March 2008 in the Xinjiang-Xizang border region, China (the Yutian earthquake). It concerns the ionospheric density, the Global Ionospheric Maps (GIM) of the Total Electron Content (TEC), the Thermal Infra-Red (TIR) anomalies, and the Outgoing Longwave Radiation (OLR) data. It is shown that all these anomalies are identified as short-term precursors, which can be explained by the LAIC concept proposed by Pulinets and Ouzounov (2011).

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Short summary
Since tens of years perturbations have been observed in the ionosphere prior to earthquakes (between a few hours and a few days before). But the mechanism to understand how the earthquake preparation in a seismic area can induce a change in the ionosphere is the subject of intense debate. In this paper we present various atmospheric and ionospheric perturbations observed prior to large earthquakes in order to support a model of coupling between the lithosphere, the atmosphere, and the ionosphere.
Since tens of years perturbations have been observed in the ionosphere prior to earthquakes...
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