Inversion of Meteor Rayleigh Waves on Earth and Modeling of Air Coupled Rayleigh Waves on Mars
Meteor impacts and/or meteor events generate body and surface seismic waves on the surface of a planet. When meteoroids burst in the atmosphere, they generate shock waves that subsequently convert into acoustic waves in the atmosphere and seismic waves in the ground. This effect can be modeled as th...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
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Springer Nature
2018
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/DE180100584 http://hdl.handle.net/20.500.11937/91027 |
| _version_ | 1848765487797764096 |
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| author | Karakostas, F. Rakoto, V. Lognonne, P. Larmat, C. Daubar, I. Miljković, Katarina |
| author_facet | Karakostas, F. Rakoto, V. Lognonne, P. Larmat, C. Daubar, I. Miljković, Katarina |
| author_sort | Karakostas, F. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Meteor impacts and/or meteor events generate body and surface seismic waves on the surface of a planet. When meteoroids burst in the atmosphere, they generate shock waves that subsequently convert into acoustic waves in the atmosphere and seismic waves in the ground. This effect can be modeled as the amplitude of Rayleigh and other Spheroidal modes excitation, due to atmospheric/ground coupling effects. First, an inversion of the seismic source of Chelyabinsk superbolide is performed. We develop an approach in order to model a line source in the atmosphere, corresponding to the consecutive generation of shock waves by the interaction with the atmosphere. The model is based on the known trajectory. We calculate the synthetic seismograms of Rayleigh waves associated with the event by the summation of normal modes of a model of the solid part and the atmosphere of the planet. Through an inversion technique based on singular value decomposition, we perform a full Rayleigh wave inversion and we provide solutions for the moment magnitude. SEIS will likely detect seismic waves generated by impacts and the later might be further located by remote sensing differential processing. In the case of Mars, we use the same method to obtain waveforms associated with impacts on the planetary surface or in low altitudes in the Martian atmosphere. We show that the contribution of the fundamental spheroidal solid mode is dominating the waveforms, compared to that of the first two overtones. We perform an amplitude comparison and we show that small impactors (diameter of 0.5 to 2 m), can be detected by the SEIS VBB seismometer of InSight mission, even in short epicentral distances, in the higher frequencies of the Rayleigh waves. We perform an analysis based on impact rate estimations and we calculate the number of detectable events of 1 meter diameter meteor impacts to be 6.7 to 13.4 per 1 Martian year for a Q= 500. |
| first_indexed | 2025-11-14T11:36:02Z |
| format | Journal Article |
| id | curtin-20.500.11937-91027 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:36:02Z |
| publishDate | 2018 |
| publisher | Springer Nature |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-910272023-05-24T05:38:06Z Inversion of Meteor Rayleigh Waves on Earth and Modeling of Air Coupled Rayleigh Waves on Mars Karakostas, F. Rakoto, V. Lognonne, P. Larmat, C. Daubar, I. Miljković, Katarina Science & Technology Physical Sciences Astronomy & Astrophysics Seismology Atmosphere Mars Rayleigh waves Meteor impacts Normal modes Airbursts SPECTRAL-ELEMENT SIMULATIONS CHELYABINSK PROPAGATION Meteor impacts and/or meteor events generate body and surface seismic waves on the surface of a planet. When meteoroids burst in the atmosphere, they generate shock waves that subsequently convert into acoustic waves in the atmosphere and seismic waves in the ground. This effect can be modeled as the amplitude of Rayleigh and other Spheroidal modes excitation, due to atmospheric/ground coupling effects. First, an inversion of the seismic source of Chelyabinsk superbolide is performed. We develop an approach in order to model a line source in the atmosphere, corresponding to the consecutive generation of shock waves by the interaction with the atmosphere. The model is based on the known trajectory. We calculate the synthetic seismograms of Rayleigh waves associated with the event by the summation of normal modes of a model of the solid part and the atmosphere of the planet. Through an inversion technique based on singular value decomposition, we perform a full Rayleigh wave inversion and we provide solutions for the moment magnitude. SEIS will likely detect seismic waves generated by impacts and the later might be further located by remote sensing differential processing. In the case of Mars, we use the same method to obtain waveforms associated with impacts on the planetary surface or in low altitudes in the Martian atmosphere. We show that the contribution of the fundamental spheroidal solid mode is dominating the waveforms, compared to that of the first two overtones. We perform an amplitude comparison and we show that small impactors (diameter of 0.5 to 2 m), can be detected by the SEIS VBB seismometer of InSight mission, even in short epicentral distances, in the higher frequencies of the Rayleigh waves. We perform an analysis based on impact rate estimations and we calculate the number of detectable events of 1 meter diameter meteor impacts to be 6.7 to 13.4 per 1 Martian year for a Q= 500. 2018 Journal Article http://hdl.handle.net/20.500.11937/91027 10.1007/s11214-018-0566-6 English http://purl.org/au-research/grants/arc/DE180100584 Springer Nature fulltext |
| spellingShingle | Science & Technology Physical Sciences Astronomy & Astrophysics Seismology Atmosphere Mars Rayleigh waves Meteor impacts Normal modes Airbursts SPECTRAL-ELEMENT SIMULATIONS CHELYABINSK PROPAGATION Karakostas, F. Rakoto, V. Lognonne, P. Larmat, C. Daubar, I. Miljković, Katarina Inversion of Meteor Rayleigh Waves on Earth and Modeling of Air Coupled Rayleigh Waves on Mars |
| title | Inversion of Meteor Rayleigh Waves on Earth and Modeling of Air Coupled Rayleigh Waves on Mars |
| title_full | Inversion of Meteor Rayleigh Waves on Earth and Modeling of Air Coupled Rayleigh Waves on Mars |
| title_fullStr | Inversion of Meteor Rayleigh Waves on Earth and Modeling of Air Coupled Rayleigh Waves on Mars |
| title_full_unstemmed | Inversion of Meteor Rayleigh Waves on Earth and Modeling of Air Coupled Rayleigh Waves on Mars |
| title_short | Inversion of Meteor Rayleigh Waves on Earth and Modeling of Air Coupled Rayleigh Waves on Mars |
| title_sort | inversion of meteor rayleigh waves on earth and modeling of air coupled rayleigh waves on mars |
| topic | Science & Technology Physical Sciences Astronomy & Astrophysics Seismology Atmosphere Mars Rayleigh waves Meteor impacts Normal modes Airbursts SPECTRAL-ELEMENT SIMULATIONS CHELYABINSK PROPAGATION |
| url | http://purl.org/au-research/grants/arc/DE180100584 http://hdl.handle.net/20.500.11937/91027 |