Ground-based and satellite DC-ULF electric field anomalies around Wenchuan M8.0 earthquake

Zhang, Xuemin; Chen, Huaran; Liu, Jing; Shen, Xuhui; Miao, Yuqing; Du, Xiaobo; Qian, J.

doi:10.1016/j.asr.2012.03.018

Cited by 26 publications

(13 citation statements)

References 28 publications

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“…During the satellite's operation, a number of great EQs, with magnitude of above Ms 8.0, occurred globally, and a series of EQs above Ms 7.0 happened in Chinese mainland and surrounding areas. The electromagnetic precursory anomalies in the ionosphere deemed to be associated with the EQs are reported (Liu et al 2003, 2011, Pulinets et al 2005, Cussac et al 2006, He et al 2009, Fan et al 2010, Zhang et al 2012. This paper will study the changes of the ionospheric electric field observed by Demeter before and after the EQs, compare the ionospheric electric fields and the ground electric/magnetic field changes before the EQs occurred in Chinese mainland, and, accordingly, report some significant results obtained.…”

Section: Introductionmentioning

confidence: 67%

“…Since the 1980s, the space-to-ground electromagnetic observation with the purpose of EQ monitoring and prediction has been carried out internationally (Parrot 1995(Parrot , 2006a, and the electromagnetic phenomena in the ionosphere associated with EQs were reported (Liu et al 2003, Pulinets et al 2005, Zhang et al 2012). This will set up a three-dimension-al electromagnetic observation system by integrating with the ground electromagnetic observations, which will perhaps help to overcome the afore-mentioned complicated problems of earthquake-related electromagnetic precursory anomalies.…”

Section: Introductionmentioning

confidence: 98%

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Earthquake-related Electric Field Changes Observed in the Ionosphere and Ground

Fan

Zhang-hui

et al. 2015

Acta Geophys.

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A b s t r a c tThe changes of the ionospheric electric field before and after four huge earthquakes, which include the Ms 8.7 earthquake of 2004 and the Ms 8.5 earthquake of 2005 in Sumatra of Indonesia, the Ms 8.0 Wenchuan earthquake of 2008 in China, the Ms 8.8 earthquake of 2010 in Chile, and their strong aftershocks are studied in this paper. The significant results revealed that the power spectral density of low-frequency electric field below 20 Hz in the ionosphere, a kind of electromagnetic radiation phenomena, increased abnormally before and after the earthquakes and partially corresponded to the increased power spectral density of the low-frequency geoelectric field in time. This research preliminarily indicates that the low-frequency electromagnetic radiation during the imminent stages before such earthquakes could be detected by the observation of the ionospheric electric field. However, the spatial, temporal, and intensive complexities of the electric field anomalies in the ionosphere before earthquakes have come in sight also.

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Section: Introductionmentioning

confidence: 67%

Section: Introductionmentioning

confidence: 98%

Earthquake-related Electric Field Changes Observed in the Ionosphere and Ground

Fan

Zhang-hui

et al. 2015

Acta Geophys.

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“…It can be believed that different mechanisms could coexist and contribute together in different conditions on several spatial/temporal scales. Zhang et al (2012) have analyzed two series of electric field measurements before the Wenchuan earthquake of May 12, 2008, M8.0: a long time series (since March 2008) detected on ground, and a shorter series (1-2 days) measured by ICE on board of DEMETER satellite. The time occurrence and spatial distribution of ground-and space-based measurements are consistent between them for long and short time series.…”

Section: Acoustic Gravity Wavesmentioning

confidence: 99%

Looking for Earthquake Precursors From Space: A Critical Review

2021

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Starting from late seventies, many observations have been reported about observations in space of signals reconciled with earthquakes and claimed as possible preseismic measurements. The detected parameters range from electromagnetic field components (in a large band of frequencies) to plasmas parameters; from particles detection to thermal anomalies; etc. Up to the DEMETER mission, the analyses have been carried out on datasets gathered by not devoted satellites. Even beyond the results obtained, the DEMETER mission has constituted a milestone for space-based investigations of seismo-associated phenomena drawing a baseline for next missions with respect instruments, observational strategy and measurements uncertainty. Nowadays, the CSES-01 satellite – developed within a sino-italian collaboration with the participation also of Austrian Institutes – represents the most advanced mission for investigating near-Earth electromagnetic environment aimed at extending the observation of earthquake precursors to a long time series. The benefit of the mission is even higher by considering that CSES-01 is the first of a program of several LEO small satellites, the second of which will be launched on 2023 with the same instruments and orbit of CSES-01, but with a shift of half of an orbit in order to monitor each trace twice per orbit. The article gives a short survey of space-based observations of preseismic phenomena from the early studies up to the more recent ones, critically reviewing results, hypotheses and trends in this research field. The supposed physical processes proposed to explain the observations are still unable to explain the large variety of the phenomenology, the statistical significance of the results are highly debated, and more in general a common consensus is still missing. Anyway, the investigation of the seismo-associated phenomena from space is a challenge for near future Earth observation.

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“…They have shown an increase of the electric field amplitude (from one to two orders of magnitude) starting from April 27, 2008 to the time of the earthquake. Zhang et al (2012b) have also studied the groundbased and satellite DC-ULF electric field data around Wenchuan. They have shown that the ground and space electric field anomalies have similar time and space behaviors.…”

Section: Ionospheric Perturbations Of Wavesmentioning

confidence: 99%

Atmospheric and ionospheric coupling phenomena related to large earthquakes

Parrot

Tramutoli

Liu

et al. 2016

Preprint

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This paper explores multi-instrument space-borne observations in order to validate physical concepts of Lithosphere-Atmosphere-Ionosphere Coupling (LAIC) in relation to major seismic events. In this study we apply already validated observation to identify atmospheric and ionospheric precursors associated with some of recent most destructive earthquakes: M8.6 of March 25, 2005 and M8.5 September 15, 2007 in Sumatra, and M7.9 May 12, 2008 in Wenchuan,\ud China. New investigations are also presented concerning these three earthquakes and for the M7.3 March 2008 in the Xinjiang-Xizang border region, China (the Yutian earthquake). It concerns the ionospheric density, the Global Ionospheric Maps (GIM) of the Total Electron Content (TEC), the Thermal Infra-Red (TIR) anomalies, and the Outgoing Longwave Radiation (OLR) data. It is shown that all these anomalies are identified as short-term precursors, which can be explained by the LAIC concept proposed by Pulinets and Ouzounov (2011)

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Ground-based and satellite DC-ULF electric field anomalies around Wenchuan M8.0 earthquake

Cited by 26 publications

References 28 publications

Earthquake-related Electric Field Changes Observed in the Ionosphere and Ground

Earthquake-related Electric Field Changes Observed in the Ionosphere and Ground

Looking for Earthquake Precursors From Space: A Critical Review

Atmospheric and ionospheric coupling phenomena related to large earthquakes

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