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Quantitative modeling of ocean/ionosphere coupling for monitoring tsunamis from space

Grant number: 15/50541-3
Support type:Regular Research Grants
Duration: November 01, 2016 - October 31, 2018
Field of knowledge:Physical Sciences and Mathematics - Geosciences
Cooperation agreement: CNRS
Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
Principal Investigator:Esfhan Alam Kherani
Grantee:Esfhan Alam Kherani
Principal investigator abroad: Lucie Rolland
Institution abroad: Observatoire de la Côte d'Azur (OCA), France
Home Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia, Inovações e Comunicações (Brasil). São José dos Campos , SP, Brazil
Associated research grant:11/21903-3 - Traveling ionospheric disturbances: simulation and observation, the importance of latitudinal coupling of gravity wave-Perkins-Es layer instabilities and forcing from pre-seismic events, AP.JP


During the last decade, a growing body of evidence indicates that the upper, ionized, part of the atmosphere - namely the ionosphere - is sensitive to perturbations generated by large earthquakes and tsunamis. In a recent study of the large 2011 Japan tsunami, we reported on the presence of tsunami-induced Traveling Ionospheric Disturbances detected ahead of the tsunami wave front. This kind of precursory signal could therefore contribute to the development of a tsunami early-warning system. In this proposal, we aim at developing an integrated simulation and observational approach in order to quantitatively relate the early-observed ionospheric signal to the tsunami amplitude. A complete magneto-hydrodynamic model is under development with financial support from FAPESP since 2012. We propose a collaborative framework to gather and reproduce by simulation both airglow data, GPS-derived electron content and geomagnetic field observations related to three recent tsunami events, geomagnetic field observations related to three recent tsunami events. (AU)

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