Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite Constellation
The first 5.3 years of magnetic data from three Swarm satellites have been systematically analyzed, and possible co-seismic magnetic disturbances in the ionosphere were investigated just a few minutes after the occurrence of large earthquakes. We preferred to limit the investigation to a subset of e...
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MDPI AG
2020-04-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/12/7/1166 |
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| author | Dedalo Marchetti Angelo De Santis Shuanggen Jin Saioa A. Campuzano Gianfranco Cianchini Alessandro Piscini |
| author_facet | Dedalo Marchetti Angelo De Santis Shuanggen Jin Saioa A. Campuzano Gianfranco Cianchini Alessandro Piscini |
| author_sort | Dedalo Marchetti |
| collection | DOAJ |
| description | The first 5.3 years of magnetic data from three Swarm satellites have been systematically analyzed, and possible co-seismic magnetic disturbances in the ionosphere were investigated just a few minutes after the occurrence of large earthquakes. We preferred to limit the investigation to a subset of earthquakes selected in function of depth and magnitude. After a systematic inspection of the available data around (in time and space) the seismic events, we found 12 Swarm satellite tracks with co-seismic disturbances possibly produced by ten earthquakes from Mw5.6 to Mw6.9. The distance of the satellite to the earthquake epicenter corresponds to the measured distance-time arrival of the disturbance from the surface to the ionosphere, confirming that the identified disturbances are most likely produced by the seismic events. Secondly, we found a good agreement with a model that combined a propagation of the disturbance to the F2 ionospheric layer with an acoustic gravity wave at a velocity of about (2.2 ± 0.3) km/s and a second faster phenomenon that transmits the disturbance from F2 layer to the Swarm satellite with a velocity of about (16 ± 3) km/s as an electromagnetic scattering propagation. |
| first_indexed | 2024-03-10T20:39:30Z |
| format | Article |
| id | doaj.art-10098f96337e4b159f045f376e0e21f1 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T20:39:30Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-10098f96337e4b159f045f376e0e21f12023-11-19T20:44:54ZengMDPI AGRemote Sensing2072-42922020-04-01127116610.3390/rs12071166Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite ConstellationDedalo Marchetti0Angelo De Santis1Shuanggen Jin2Saioa A. Campuzano3Gianfranco Cianchini4Alessandro Piscini5School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaIstituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, 605, 00143 Rome, ItalySchool of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaIstituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, 605, 00143 Rome, ItalyIstituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, 605, 00143 Rome, ItalyIstituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, 605, 00143 Rome, ItalyThe first 5.3 years of magnetic data from three Swarm satellites have been systematically analyzed, and possible co-seismic magnetic disturbances in the ionosphere were investigated just a few minutes after the occurrence of large earthquakes. We preferred to limit the investigation to a subset of earthquakes selected in function of depth and magnitude. After a systematic inspection of the available data around (in time and space) the seismic events, we found 12 Swarm satellite tracks with co-seismic disturbances possibly produced by ten earthquakes from Mw5.6 to Mw6.9. The distance of the satellite to the earthquake epicenter corresponds to the measured distance-time arrival of the disturbance from the surface to the ionosphere, confirming that the identified disturbances are most likely produced by the seismic events. Secondly, we found a good agreement with a model that combined a propagation of the disturbance to the F2 ionospheric layer with an acoustic gravity wave at a velocity of about (2.2 ± 0.3) km/s and a second faster phenomenon that transmits the disturbance from F2 layer to the Swarm satellite with a velocity of about (16 ± 3) km/s as an electromagnetic scattering propagation.https://www.mdpi.com/2072-4292/12/7/1166geomagnetic fieldco-seismic magnetic disturbanceSwarm satellitesearthquakesgravity waves |
| spellingShingle | Dedalo Marchetti Angelo De Santis Shuanggen Jin Saioa A. Campuzano Gianfranco Cianchini Alessandro Piscini Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite Constellation Remote Sensing geomagnetic field co-seismic magnetic disturbance Swarm satellites earthquakes gravity waves |
| title | Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite Constellation |
| title_full | Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite Constellation |
| title_fullStr | Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite Constellation |
| title_full_unstemmed | Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite Constellation |
| title_short | Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite Constellation |
| title_sort | co seismic magnetic field perturbations detected by swarm three satellite constellation |
| topic | geomagnetic field co-seismic magnetic disturbance Swarm satellites earthquakes gravity waves |
| url | https://www.mdpi.com/2072-4292/12/7/1166 |
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