A comprehensive theory for 1-D (an)elastic medium deformation due to plane-wave fluid pressure perturbation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Geophysical Journal International Année : 2024

A comprehensive theory for 1-D (an)elastic medium deformation due to plane-wave fluid pressure perturbation

Résumé

Atmospheric and oceanic pressure perturbations deform the ground surface and the seafloor, respectively. This mechanical deformation, where the fluid perturbations propagate as plane waves, occurs not only on Earth but also on other planets/bodies with atmospheres, such as Mars, Titan and Venus. Studying this type of deformation improves our understanding of the mechanical interaction between the fluid layer (atmosphere/ocean) and the underlying solid planet/body, and aids investigation of subsurface structures. In this study, we utilize eigenfunction theory to unify existing theories for modelling this deformation and to comprehensively demonstrate possible scenarios of this deformation in homogeneous and 1-D elastic media, including static loading, air-coupled Rayleigh waves and leaky-mode surface waves. Our computations quantitatively reveal that the deformation amplitude generally decays with depth and that reducing seismic noise due to Martian atmosphere requires deploying seismometers at least 1 m beneath Martian surface. We also apply our theory to illustrate how this deformation and the corresponding air-to-solid energy conversion vary on different planetary bodies. Finally, we discuss how medium anelasticity and other factors affect this deformation.
Fichier principal
Vignette du fichier
Xu2023_Compliance.pdf (1.5 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04398870 , version 1 (16-01-2024)

Licence

Paternité

Identifiants

Citer

Zongbo Xu, Philippe Lognonné. A comprehensive theory for 1-D (an)elastic medium deformation due to plane-wave fluid pressure perturbation. Geophysical Journal International, 2024, 236 (3), pp.1499-1512. ⟨10.1093/gji/ggae005⟩. ⟨hal-04398870⟩
22 Consultations
6 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More