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ISSN  2096-3955

CN  10-1502/P

Citation: Rui Yan, YiBing Guan, XuHui Shen, JianPing Huang, XueMin Zhang, Chao Liu, DaPeng Liu, 2018: The Langmuir Probe Onboard CSES: data inversion analysis method and first results, Earth and Planetary Physics. doi: 10.26464/epp2018046

doi: 10.26464/epp2018046


The Langmuir Probe Onboard CSES: data inversion analysis method and first results


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


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


National Space Science Center, Chinese Earthquake Administration, Beijing 100094, China

Corresponding author: Rui Yan,

Received Date: 2018-08-18
Web Publishing Date: 2018-12-01

The Langmuir probe (LAP), onboard the China seismic electromagnetic satellite (CSES), has been designed for in situ measurements of bulk parameters of the ionosphere plasma, the first Chinese application of in-situ measurement technology in the field of space exploration. The two main parameters measured by LAP are electron density and temperature. In this paper, a brief description of the LAP and its work mode are provided. Based on characteristics of the LAP, and assuming an ideal plasma environment, we introduce in detail a method used to invert the I-V curve; the data products that can be accessed by users are shown. Based on the LAP data available, this paper reports that events such as earthquakes and magnetic storms are preceded and followed by obvious abnormal changes. We suggest that LAP could provide a valuable data set for studies of space weather, seismic events, and the ionospheric environment.

Key words: Langmuir probe (LAP), Current-Voltage (I-V) curve, electron density (Ne), electron temperature (Te)

Balan, N., Shiokawa, K., Otsuka, Y., Kikuchi, T., Vijaya Lekshmi, D., Kawamura, S., Yamamoto, M., and Bailey, G. J. (2010). A physical mechanism of positive ionospheric storms at low latitudes and midlatitudes. J. Geophys. Res., 115(A2), A02304.

Bering, E. A., Kelley, M. C., Mozer, F. S., and Fahleson, U. V. (1973). Theory and operation of the split Langmuir Probe. Planet. Space Sci., 21(11), 1983–2001.

Brace, L. H., Carignan, G. R., Findlay, J. A. (1971). Evaluation of ionospheric electron temperature measurements by cylindrical probes. Space Res., 11, 1079–1105

Buonsanto, M. J. (1999). Ionospheric storms—a review. Space Sci. Rev., 88(3-4), 563–601.

Chen, F. F., and Chang, J. P. (2002). Principles of Plasma Processing (pp. 2–8). New York: Plenum/Kluwer Publishers.222

Eriksson, A. I., Boström, R., Gill, R., Åhlén, L., Jansson, S. E., Wahlund, J. E., André, M., Mälkki, A., Holtet, J. A., … The LAP Team. (2007). RPC-LAP: The Rosetta Langmuir Probe Instrument. Space Sci. Rev., 128(1-4), 729–744.

Godyak, V. A., and Alexandrovich, B. M. (2015). Comparative analyses of plasma probe diagnostics techniques. J. Appl. Phys., 118(23), 233302.

Guan, Y. B., Wang, S. J., Liu, C., and Feng, Y. B. (2011). The design of the Langmuir probe onboard a seismo-electromagnetic satellite. In Proceedings of SPIE 8196, International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications. Beijing: SPIE.

He, Y., Yang, D. M., Zhu, R., Qian, J. D., and Parrot, M. (2010). Variations of electron density and temperature in ionosphere based on the DEMETER ISL data. Earthq. Sci., 23(4), 349–355.

He, Y., Yang, D., Qian, J., and Parrot, M. (2011). Response of the ionospheric electron density to different types of seismic events. Nat. Hazards Earth Syst. Sci., 11(8), 2173–2180.

Holback, B., Jacksén, Å., Åhlén, L., Jansson, S. E., Eriksson, A. I., Wahlund, J. E., Carozzi, T., and Bergman, J. (2001). LINDA-the Astrid-2 Langmuir probe instrument. Ann. Geophys., 19(6), 601–610.

Hutchinson, I. H. (1987). Principles of Plasma Diagnostics (pp. 55–66). New York: Cambridge University Press.222

Langmuir, I., and Mott-Smith, H. M. (1924). Studies of electric discharges in gases at low pressures. Gen. Electr. Rev., 27(7), 449–455

Langmuir, I. (1932). Electric discharges in gases at low pressures. J. Franklin Inst., 214(3), 275–298.

Lebreton, J. P., Stverak, S., Travnicek, P., Maksimovic, M., Klinge, D., Merikallio, S., Lagoutte, D., Poirier, B., Blelly, P. L., … Salaquarda, M. (2006). The ISL Langmuir probe experiment processing onboard DEMETER: Scientific objectives, description and first results. Planet. Space Sci., 54(5), 472–486.

Li, M., and Parrot, M. (2012). " Real time analysis” of the ion density measured by the satellite DEMETER in relation with the seismic activity. Nat. Hazards Earth Syst. Sci., 12(9), 2957–2963.

Liu, C., Guan, Y. B., Zhang, A. B., Zheng, X. Z., and Sun, Y. Q. (2016). The ionosphere measurement technology of Langmuir probe on China seismo-electromagnetic satellite. Acta Phys. Sin.(in Chinese) , 65(18), 189401.

Liu, C., Guan, Y. B., Zheng, X. Z., Zhang, A. B., Piero, D., and Sun, Y. Q. (2018). The technology of space plasma in-situ measurement on the China Seismo-Electromagnetic Satellite. Science China.

Liu, J., Wan, W. X., Huang, J. P., Zhang, X. M., Zhao, S. F., Ouyang, X. Y., and Zeren, Z. M. (2011). Electron density perturbation before Chile M8.8 earthquake. Chinese J. Geophys.(in Chinese) , 54(11), 2717–2725.

Liu, J. (2013). Ionopheric perturbance study before earthquakes [Ph. D. thesis] (in Chinese). Beijing: University of Chinese Academy of Sciences.222

Liu, J., Huang, J. P., and Zhang, X. M. (2014). Ionospheric perturbations in plasma parameters before global strong earthquakes. Adv. Space Res., 53(5), 776–787.

Mott-Smith, H. M. (1961). The theory of collectors in gaseous discharges. In Suits, C. G. (Ed.), Electrical Discharge (pp. 99–132). Amsterdam: Elsevier.

Parrot, M. (2012). Statistical analysis of automatically detected ion density variations recorded by DEMETER and their relation to seismic activity. Ann. Geophys., 55(1), 149–155.

Píša, D., Parrot, M., and Santolík, O. (2011). Ionospheric density variations recorded before the 2010 M w 8.8 earthquake in Chile. J. Geophys. Res., 116(A8), A08309.

Priyadarshi, S., Kumar, S., and Singh, A. K. (2011). Ionospheric perturbations associated with two recent major earthquakes (M > 5.0). Phys. Scr., 84(4), 045901.

Pulinets, S. A., Ouzounov, D. P., Karelin, A. V., and Davidenko, D. V. (2015). Physical bases of the generation of short-term earthquake precursors: A complex model of ionization-induced geophysical processes in the lithosphere-atmosphere-ionosphere-magnetosphere system. Geomagn. Aeron., 55(4), 521–538.

Sarkar, S., Gwal, A. K., and Parrot, M. (2007). Ionospheric variations observed by the DEMETER satellite in the mid-latitude region during strong earthquakes. J. Atmos. Solar -Terr. Phys., 69(13), 1524–1540.

Sarkar, S., Choudhary, S., Sonakia, A., Vishwakarma, A., and Gwal, A. K. (2012). Ionospheric anomalies associated with the Haiti earthquake of 12 January 2010 observed by DEMETER satellite. Nat. Hazards Earth Syst. Sci., 12(3), 671–678.

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

Szuszczewicz, E. P. (1972). Area influences and floating potentials in Langmuir probe measurements. Journal of Applied Physics, 43(3), 874–880.

Yan, R., Parrot, M., and Pinçon, J. L. (2017a). Statistical study on variations of the ionospheric ion density observed by DEMETER and related to seismic activities. J. Geophys. Res.:Space Phys., 122(12), 12421–12429.

Yan, R., Hu, Z., Wang, L. W., Guan, Y. B., and Liu, C. (2017b). Preliminary data inversion method of Langmuir probe onboard CSES. Acta Seismol. Sin.(in Chinese) , 39(2), 239–247.

Yao, Y. B., Chen, P., Zhang, S., and Chen, J. J. (2013). Temporal and spatial variations in ionospheric electron density profiles over South Africa during strong magnetic storms. Nat. Hazards Earth Syst. Sci., 13(2), 375–384.

Zhang, X. M., Shen, X. H., Liu, J., Ouyang, X. Y., Qian, J. D., and Zhao, S. F. (2010a). Ionospheric perturbations of electron density before the Wenchuan Earthquake. Int. J. Remote Sens., 31(13), 3559–3569.

Zhang, X. M., Liu, J., Shen, X. H., Parrot, M., Qian, J. D., Ouyang, X. Y., Zhao, S. F., and Huang, J. P. (2010b). Ionospheric perturbations associated with the M8.6 Sumatra earthquake on 28 March 2005. Chinese J. Geophys.(in Chinese) , 53(3), 567–575.

Zhao, G. Z., Chen, X. B., and Cai, J. T. (2007). Electromagnetic observation by satellite and earthquake prediction. Prog. Geophys.(in Chinese) , 22(3), 667–673.


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The Langmuir Probe Onboard CSES: data inversion analysis method and first results

Rui Yan, YiBing Guan, XuHui Shen, JianPing Huang, XueMin Zhang, Chao Liu, DaPeng Liu