Next Article in Journal
Uncertainty in Measured Raindrop Size Distributions from Four Types of Collocated Instruments
Next Article in Special Issue
Locating Seismo-Conductivity Anomaly before the 2017 MW 6.5 Jiuzhaigou Earthquake in China Using Far Magnetic Stations
Previous Article in Journal
Case Study of a Retrieval Method of 3D Proxy Reflectivity from FY-4A Lightning Data and Its Impact on the Assimilation and Forecasting for Severe Rainfall Storms
Open AccessArticle

Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite Constellation

School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, 605, 00143 Rome, Italy
Jiangsu Engineering Center for Collaborative Navigation/Positioning and Smart Applications, Nanjing 210044, China
Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
Author to whom correspondence should be addressed.
Now at Instituto de Geociencias IGEO (CSIC-UCM), 28040 Madrid, Spain.
Remote Sens. 2020, 12(7), 1166;
Received: 14 January 2020 / Revised: 25 March 2020 / Accepted: 1 April 2020 / Published: 5 April 2020
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. View Full-Text
Keywords: geomagnetic field; co-seismic magnetic disturbance; Swarm satellites; earthquakes; gravity waves geomagnetic field; co-seismic magnetic disturbance; Swarm satellites; earthquakes; gravity waves
Show Figures

Figure 1

MDPI and ACS Style

Marchetti, D.; De Santis, A.; Jin, S.; A. Campuzano, S.; Cianchini, G.; Piscini, A. Co-Seismic Magnetic Field Perturbations Detected by Swarm Three-Satellite Constellation. Remote Sens. 2020, 12, 1166.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop