Work

The First Near‐Real‐Time Compatible Numerical Method for Co‐Seismic Ionospheric Disturbances Simulation

Year: 2025

Type: article

Abstract: Numerous studies demonstrated a huge potential for ionospheric total electron content (TEC) measurements to be included in earthquake and tsunami risk assessments. However, up to now, only a few methodologies or tools can be used in near‐real‐time (NRT) for these purposes. For the first time, this study presents a method allowing for fast simulations of Co‐Seismic Ionospheric Disturbances (CSID) or ionoquakes. The new analytical simulation code models the propagation of acoustic‐gravity waves (AGWs) generated by a co‐seismic uplift of the ground/seafloor, by resolving the governing equations in the time‐altitude‐horizontal domain. The method models the near‐field CSID in about 60 s of simulation time, that is, before the waves are detected in the ionospheric TEC measurements. The developed method is, therefore, among the first most promising products in Ionospheric Seismology that can be used for NRT applications, such as tsunami early warning.

Source: Geophysical Research Letters

DOI: 10.1029/2025gl115208

Authors: S. A. Sanchez, E. A. Kherani, E. Astafyeva, E. R. de Paula

Institutions: Instituto Nacional de Pesquisas Espaciais, Centre National de la Recherche Scientifique, Institut de physique du globe de Paris, Université Paris Cité

Language: English

Topic: Earthquake Detection and Analysis

Subfield: Geophysics

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,190

Funders: Agence Nationale de la Recherche, Fundação de Amparo à Pesquisa do Estado de São Paulo, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Agência Espacial Brasileira