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ISSN  2096-3955

CN  10-1502/P

Citation: JianPing Huang, JunGang Lei, ShiXun Li, ZhiMa Zeren, Cheng Li, XingHong Zhu, WeiHao Yu, 2018: The Electric Field Detector (EFD) onboard the ZH-1 satellite and first observational results, Earth and Planetary Physics, 2, 469-478. doi: 10.26464/epp2018045

2018, 2(6): 469-478. doi: 10.26464/epp2018045


The Electric Field Detector (EFD) onboard the ZH-1 satellite and first observational results


Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China


Key Laboratory of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China


Lanzhou Institute of Physics, China Academy of Space Technology, Gansu 730000, China


Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China


DFH Satellite Co., Ltd., Beijing 100094, China


Institute of Disaster Prevention, Hebei 101601, China

Corresponding author: JianPing Huang, xhhjp@126.comJunGang Lei,

Received Date: 2018-10-05
Web Publishing Date: 2018-11-01

Previous studies have reported that, before or after occurrences of strong earthquakes, some low earth orbit satellites recorded ionospheric disturbances, including electromagnetic emissions and plasma fluctuations over the epicenter region or its conjugate point. Theoretically speaking, due to some electromagnetic coupling effect, electromagnetic emissions from the earthquake preparation zone could propagate from the lithosphere to the atmosphere, and could reach the ionosphere, even up to the inner magnetosphere. This paper introduces the electric field detector (EFD) onboard the ZhangHeng-1 satellite (ZH-1). The EFD is designed to measure electric field fluctuations within the broad frequency range of DC to 3.5 MHz, divided into 4 channels: ULF (DC–16 Hz), ELF (6 Hz–2.2 kHz), VLF (1.8 kHz–20 kHz) and HF (18 kHz–3.5 MHz). The sampling rates of the channels are 125 Hz, 5 kHz, 50 kHz and 10 MHz, respectively. The EFD includes 4 spherical probes mounted on a over 4.5 m boom and an electronic box inside the satellite module. The resolution of the EFD is 1 μV·m-1·Hz-1/2 at frequencies from DC to 16 Hz, and the sensitivity is 0.1 μV·m-1·Hz-1/2 at frequencies from 6 Hz to 2.2 kHz, 0.05 μV·m-1·Hz-1/2 in the band 1.8 kHz to 20 kHz, and 0.1μV·m-1·Hz-1/2 from 20 kHz to 3.5 MHz. The dynamic range from DC to 20 kHz is over 120 dB, and over 96 dB from 20 kHz to 3.5 MHz. The EFD has two observation modes: survey mode and burst mode. The survey mode concentrates primarily on electric field power density values; the burst mode provides high sampling rate waveform data. The detailed configuration of the EFD onboard the ZH-1 is also introduced in this paper. During the six months’ orbit test phase, the EFD recorded a number of natural electromagnetic emissions. Preliminary analysis of these data suggests that the EFD performs well onboard the ZH-1 and is meeting the requirements of the scientific objectives of ZH-1.

Key words: EFD, payload, ZhangHeng-1, sensitivity

Berthelier, J. J., Godefroy, M., Leblanc, F., Malingre, M., Menvielle, M., Lagoutte, D., Brochot, J. Y., Elie, C. F., Legendre, C., … Pfaff, R. (2005). ICE, the electric field experiment on DEMETER. Planetary and Space Science, 54(5), 456–471.

Bhattacharya, S., Sarkar, S., Gwal, A. K., Parrot, M. (2007). Observations of ULF/ELF anomalies detected by DEMETER satellite prior to earthquakes. Indian Journal of Radio & Space Physics., 36(2), 103–113.

Biagi, P. F., Piccolo, R., Ermini, A., Martellucci, S., Bellecci, C., Hayakawa, M., Capozzi, V., Kingsley, S. P. (2001). Possible earthquake precursors revealed by LF radio signals. Nat. Hazards Earth Syst. Sci., 1(1-2), 99–104.

Fraser-Smith, A.C., Bernardi, A., McGill, P. R., Ladd, M. E., Helliwell, R. A., Villard, Jr. O. G. (1990). Low-frequency magnetic field measurements near the epicenter of the Ms 7.1 Loma Prieta earthquake. Geophys. Res. Lett., 17, 1465–1468.

Hayakawa, M., Kasahara, Y., Nakamura, T., Muto, F., Horie, T., Maekawa, S., Hobara, Y., Rozhnoi, A. A., Solovieva, M., Molchanov, O. A. (2010). A statistical study on the correlation between lower ionospheric perturbations as seen by subionospheric VLF/LF propagation and earthquakes. J. Geophys. Res., 115(A9), A09305.

Kasahara, Y., Muto, F., Horie, T., Yoshida, M., Hayakawa, M., Ohta, K., Rozhnoi, A., Solovieva, M., Molchanov, O. A. (2008). On the statistical correlation between the ionospheric perturbations as detected by subionospheric VLF/LF propagation anomalies and earthquakes. Nat. Hazards Earth Syst. Sci., 8(4), 653–656.

Maekawa, S., Horie, T., Yamauchi, T., Sawaya, T., Ishikawa, M., Hayakawa, M., Sasaki, H. (2006). A statistical study on the effect of earthquakes on the ionosphere, based on the subionospheric LF propagation data in Japan. Ann. Geophys., 24(8), 2219–2225.

Molchanov, O. A., Mazhaeva, O. A., Goliavin, A. N., Hayakawa. (1993). Observation by the Intercosmos-24 satellite of ELF-VLF electromagnetic emissions associated with earthquake. Ann. Geophs., 11, 431–440

Ouyang, X. Y., and Shen, X. H. (2015). A method for pre-processing ULF electric field disturbances observed by DEMETER and its case application analysis. Acta Seismol. Sin.(in Chinese) , 37(5), 820–829.

Parrot, M. (1995). Use of satellites to detect seismo-electromagnetic effects. Advances. in Space Research, 15(11), 271337–351347.

Rozhnoi, A., Solovieva, M., Molchanov, O., Biagi, P. -F., Hayakawa, M., Schwingenschuh, K., Boudjada, M., Parrot, M. (2010). Variations of VLF/LF signals observed on the ground and satellite during a seismic activity in Japan region in May–June 2008. Nat. Hazards Earth Syst. Sci., 10(3), 529–534.

Sarkar, S., and Gwal, A. K. (2010). Satellite monitoring of anomalous effects in the ionosphere related to the great Wenchuan earthquake of May 12, 2008. Nat. Hazards, 55(2), 321–332.

Shen, X. H., Zhima, Z, Zhao, S. F., Qian, G., Ye, Q., Ruzhin, Y. (2017). VLF radio wave anomalies associated with the 2010 Ms 7.1 Yushu earthquake. Advances. in Space Research., 59(10), 2636–2644.

Shen, X. H., Zhang, X. M., Yuan, S. G., Wang, L. W., Cao, J. B., Huang, J. P., Zhu, X. H., Piergiorgio, P., Dai, J. P. (2018). The state-of-the-art of the China Seismo-Electromagnetic Satellite mission. Sci. China Technol. Sci., 8, 61(5), 634–642.

Surkov, V. V., Molchanov, O. A., Hayakawa, M. (2003). Pre-earthquake ULF electromagnetic perturbations as a result of inductive seismomagnetic phenomena during microfracturing. Journal of Atmospheric and Solar- Terrestrial Physics, 65(1), 31–46.

Takano, T., Yamada, A., Sakai, K., Higasa, H., Shimakura, S. (2002). Enhancements of electromagnetic broadband noise in 50 MHz band which possibly associate with earthquakes. J. Atmos. Electr., 22(1), 23–324

Yamada, A., Sakai, K., Yaji, Y., Takano, T., Shimakura, S. (2002). Observations of natural noise in VHF band which relates to earthquakes. In: Hayakawa, M., and Molchanov, O. A. (Eds.), Seismo Electromagnetics (Lithosphere-Atmosphere-Ionosphere Coupling) (pp. 255–257). Tokyo: Terra Scientific Publishing Company, Tokyo, 255–257.222

Zeren Z. M., Cao, J. B., Liu, W. L., Fu, H. S., Wang, T. Y., Zhang, X. M., Shen, X. H. (2014). Storm time evolution of ELF/VLF waves observed by DEMETER satellite. J. Geophys. Res.:Space Physics, 119(4), 2612–2622.

Zeren Z. M., Chen, L. J., Xiong, Y., Cao, J. B., Fu, H. S. (2017). On the origin of ionospheric hiss: a conjugate observation. J. Geophys. Res.:Space Physics, 122(11), 784–793.

Zeren Z. M., Shen, X. H., Cao, J. B., Zhang, X. M., Huang, J. P., Liu, J., Ouyang, X. Y., Zhao, S. F. (2012). Statistical analysis of ELF/VLF magnetic field disturbances before major earthquakes. Chinese J. Geophys.(in Chinese) , 55(11), 3699–3708

Zhang, X., Shen, X. M., Parrot, M., Zeren, Z., Ouyang, X., Liu, J., Qian, J., Zhao, S., Miao, Y. (2012). Phenomena of electrostatic perturbations before strong earthquake (2005-2010) observed on DEMETER. Nat. Hazards Earth Syst Sci., 12(1), 75–83.

Zhang, X., Shen, X. H., Zhao, S. F., Lu, Yao., Ouyang, X. Y., Qian, J. D. (2014). The characteristics of quasistatic electric field perturbations observed by DEMETER satellite before large earthquakes. Journal of Asian Earth Sciences, 79(A), 42–52.

Zhang, X., Zeren, Z., Parrot, M., Battiston, R., Qian, J., Shen, X. (2011). ULF/ELF ionospheric electric field and plasma perturbations related to Chile earthquakes. Advances in Space Research, 47(6), 991–1000.


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The Electric Field Detector (EFD) onboard the ZH-1 satellite and first observational results

JianPing Huang, JunGang Lei, ShiXun Li, ZhiMa Zeren, Cheng Li, XingHong Zhu, WeiHao Yu