CaltechAUTHORS
Published November 16, 2018 | Version Supplemental Material + Published
Journal Article Open

Numerical Simulation of the Atmospheric Signature of Artificial and Natural Seismic Events

Creators

  • 1. ROR icon Federal University of Toulouse Midi-Pyrénées
  • 2. ROR icon California Institute of Technology
  • 3. ROR icon Géosciences Environnement Toulouse
  • 4. ROR icon Jet Propulsion Lab

Abstract

The mechanical coupling between solid planets and their atmospheres enables seismically induced acoustic waves to propagate in the atmosphere. We numerically simulate this coupled system for two application cases: active seismic experiments (ASEs) and passive seismic experiments. A recent ASE (Krishnamoorthy et al., 2018, https://doi.org/10.1002/2018GL077481) observed the infrasonic signals produced by a seismic hammer. To measure the sensitivity of observations to seismic parameters, we attempt to reproduce the results from this experiment at short range by considering a realistic unconsolidated subsurface and an idealized rock‐solid subsurface. At long range, we investigate the influence of the source by using two focal mechanisms. We found surface waves generate an infrasonic plane head wave in the ASE case of the rock‐solid material. For the passive seismic experiments, the amplitude of atmospheric infrasound generated by seismic surface waves is investigated in detail. Despite some limitations, the simulations suggest that balloon measurement of seismically induced infrasound might help to constrain ground properties.

Additional Information

© 2018 American Geophysical Union. Received 1 JUN 2018; Accepted 29 OCT 2018; Accepted article online 1 NOV 2018; Published online 13 NOV 2018. The authors thank the CALMIP computing center (Toulouse, France) for computer resources (project p1404). The authors thank both the "Direction Générale de l'Armement" (French DoD) and the "Région Occitanie" for funding the PhD grant of Léo Martire. This study was supported by CNES research projects and the W. M. Keck Institute for Space Studies. Contributions from JPL authors were made possible by research carried out with support from an internal research and technology grant at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. Data used to generate results presented here have been uploaded to publicly accessible repositories: https://doi.org/10.5281/zenodo.1421100 for the seismometer data and https://doi.org/10.6084/m9.figshare.6137507 for the barometer data.

Attached Files

Published - Martire_et_al-2018-Geophysical_Research_Letters.pdf

Supplemental Material - 2018gl080485-sup-0001-text_si-s01_aa.pdf

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2018gl080485-sup-0001-text_si-s01_aa.pdf

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Additional details

Identifiers

Eprint ID
90598
Resolver ID
CaltechAUTHORS:20181101-154732804

Related works

Describes
10.5281/zenodo.1421100 (DOI)
10.6084/m9.figshare.6137507 (DOI)

Funding

Direction Générale de l'Armement
Région Occitanie
Centre National d'Études Spatiales (CNES)
Keck Institute for Space Studies (KISS)
NASA/JPL/Caltech

Dates

Created
2018-11-01
Created from EPrint's datestamp field
Updated
2023-06-01
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Seismological Laboratory, Keck Institute for Space Studies, Division of Geological and Planetary Sciences (GPS)