CSES High Precision Magnetometer Data Products and Example Study of an Intense Geomagnetic Storm

Yang, Yanchu; Zhou, Bin; Hulot, Gauthier; Olsen, Nils; Wu, Yingyan; Xiong, Chao; Stolle, Claudia; Zhima, Zeren; Huang, Jianping; Pollinger, Andreas; Cheng, Bowen; Magnes, W.; Zhao, Xudong; Shen, Xuhui

doi:10.1029/2020ja028026

Cited by 13 publications

(4 citation statements)

References 38 publications

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“…To obtain convincing seismo-ionospheric evidence, we pay considerable attention to data cleaning and data quality control before seismic information extraction. We have performed specific validations on CSES data, and some works about the data quality of the electromagnetic field [37,39,40] and the plasma data [31,41] have been published.…”

Section: Discussionmentioning

confidence: 99%

The Possible Seismo-Ionospheric Perturbations Recorded by the China-Seismo-Electromagnetic Satellite

et al. 2022

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Driven by the objective of earthquake disaster prevention and mitigation, China launched the Zhangheng mission to build a stereoscopic earthquake monitoring system from the lithosphere to space. This report briefly presents the possible seismic ionospheric disturbances recorded by the first probe of the Zhangheng mission, which is known as the China-Seismo-Electromagnetic Satellite (CSES). The routine data preprocessing and seismo-ionospheric information analysis methods are briefly introduced. The possible seismo-ionospheric disturbances that appeared during the strong shallow earthquakes (with a magnitude over 7 and a depth shallower than 30 km) are analyzed by using CSES and other multi-source data. Investigating seismo-ionospheric mechanisms requires multidisciplinary knowledge involving geophysics, atmosphere/ionosphere physics, geochemistry/atmospheric chemistry, etc. We state that the results from the CSES scientific application center are preliminary, calling for international scientists to contribute to the seismo-ionospheric perturbation phenomena, which is one of the most challenging scientific problems.

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Section: Discussionmentioning

confidence: 99%

The Possible Seismo-Ionospheric Perturbations Recorded by the China-Seismo-Electromagnetic Satellite

et al. 2022

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“…In this study, we analyzed data recorded by the HPM payload onboard the CSES referring to ground-based data. HPM vector and scalar data are obtained by the Fluxgate Magnetometer (FGM) and Coupled Dark State Magnetometer (CDSM) probes, respectively [30]. In this study, HPM_5 vector data recorded by the FGM probe were selected for seismic analysis.…”

Section: Data Selectionmentioning

confidence: 99%

Polarization Method-Based Research on Magnetic Field Data Associated with Earthquakes in Northeast Asia Recorded by the China Seismo-Electromagnetic Satellite

Yang,

Zhang,

Ouyang

et al. 2023

Atmosphere

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Previous earthquake polarization (as the ratio of vertical and horizontal components) studies using geomagnetic data were all performed with ground data. The advantage of satellite data is that it is not limited by geography. Therefore, in this work, we tried to select 12 typical earthquakes in Northeast Asia with Ms > 5.0 and an epicenter depth ≤ 40 km within the longitude 105° E–145° E and latitude 38° N–58° N ranges from December 2018 to January 2023 for analysis by using the satellite data of the high-precision magnetometer (HPM) payload onboard the China Seismo-Electromagnetic Satellite (CSES) for the first time in a quiet magnetic environment. The geomagnetic three-component vector data were investigated, and the minimum study period was divided into 10 s intervals. Fourier transform was performed to obtain 0.01–0.2 Hz geomagnetic three-component dynamic spectra, and the time series of the polarization (as the ratio of vertical and horizontal components) data was then obtained. The average value of the polarization data over four years was used to obtain the time series of the polarization perturbation amplitude, after which joint research was conducted. The results showed that (1) earthquakes with larger magnitudes are more likely to exhibit anomaly perturbations recorded by satellites; (2) among all earthquakes with anomalies, the horizontal east–west component perturbation is the largest, the vertical component perturbation is the smallest, and the east–west component may be the dominant component in seismic anomaly observations; (3) the applicability of the polarization method to space-based earthquake-related data is limited; (4) the perturbation amplitude of polarization data can be used as a reference for extracting seismic anomalies; and (5) ion velocity Vx data from the plasma analyzer package (PAP) can be considered to approximately verify the physical mechanism of the anomaly perturbation of the horizontal component in the ionospheric magnetic field, and the two kinds of data (PAP and HPM) can be combined in seismic prediction research.

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“…2023, 15, 4578 2 of 11 work together to provide magnetic field measurements from DC to ~15 Hz. Previous scientific studies have shown very good usability of the magnetometer data [7][8][9]. In-flight calibration based on the CDSM's scalar data is in principle well established and the quality is already very good.…”

Section: Introductionmentioning

confidence: 96%

An Improved In-Flight Calibration Scheme for CSES Magnetic Field Data

Yang,

Zhima,

Shen

et al. 2023

Remote Sensing

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The CSES high precision magnetometer (HPM), consisting of two fluxgate magnetometers (FGM) and one coupled dark state magnetometer (CDSM), has worked successfully for more than 5 years providing continuous magnetic field measurements since the launch of the CSES in February 2018. After rechecking almost every year’s data, it has become possible to make an improvement to the in-flight intrinsic calibration (to estimate offsets, scale values and non-orthogonality) and alignment (to estimate three Euler angles for the rotation between the orthogonalized sensor coordinates and the coordinate system of the star tracker) of the FGM. The following efforts have been made to achieve this goal: For the sensor calibration, FGM sensor temperature corrections on offsets and scale values have been taken into account to remove seasonal effects. Based on these results, Euler angles have been estimated along with global geomagnetic field modeling to improve the alignment of the FGM sensor. With this, a latitudinal effect in the east component of the originally calibrated data could be reduced. Furthermore, it has become possible to prolong the updating period of all calibration parameters from daily to 10 days, without the separation of dayside and nightside data. The new algorithms optimize routine HPM data processing efficiency and data quality.

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CSES High Precision Magnetometer Data Products and Example Study of an Intense Geomagnetic Storm

Cited by 13 publications

References 38 publications

The Possible Seismo-Ionospheric Perturbations Recorded by the China-Seismo-Electromagnetic Satellite

The Possible Seismo-Ionospheric Perturbations Recorded by the China-Seismo-Electromagnetic Satellite

Polarization Method-Based Research on Magnetic Field Data Associated with Earthquakes in Northeast Asia Recorded by the China Seismo-Electromagnetic Satellite

An Improved In-Flight Calibration Scheme for CSES Magnetic Field Data

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