Earthquake precursory studies in Kangra valley of North West Himalayas, India, with special emphasis on radon emission

Kumar, Arvind; Singh, Surinder; Mahajan, Surbhi; Bajwa, B.S.; Kalia, Rajeev; Dhar, Sunil

doi:10.1016/j.apradiso.2009.05.016

Cited by 60 publications

(27 citation statements)

References 15 publications

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“…For example, radon activities sometimes decline when atmospheric temperatures do or when barometric pressures rise (Kumar et al, 2009). Plot of soil gas measurements vs. time of sampling.…”

Section: External Forcingmentioning

confidence: 99%

CO2 escapes in the Laacher See region, East Eifel, Germany: Application of natural analogue onshore and offshore geochemical monitoring

Gal

Brach

Braibant

et al. 2011

International Journal of Greenhouse Gas Control

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Natural analogues studies have received growing interest during preceding years in a CCS perspective. There is a strong willing to deploy robust and reliable technologies to ensure the safety and integrity of CO 2 underground storages. Here we present a dataset acquired in the Eifel volcanic district, using geochemical monitoring methods focusing on both dissolved and gaseous species.Onshore and offshore monitoring (Lake Laacher See) were performed to depict spatial behaviour of CO 2 natural releases. Additional gaseous species, mainly helium and radon, were also monitored to better assess the shapes of gas vents, using methodologies that were learned from hydrological and tectonic applications. Lake water monitoring allowed the characterisation of the water body itself, in terms of lateral heterogeneities, to evaluate the impact of CO 2 deep degassing near the bottom of the lake. The use of a dedicated sensor for monitoring in situ CO 2 partial pressure did not provide more valuable information that was learned from more classical physico-chemical parameters. From those investigations, the usefulness of geochemical monitoring is still demonstrated, but the use of complementary approaches and methods is still needed to get a powerful set of techniques able to warn in case of leakages occurring from depth.

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“…For example, radon activities sometimes decline when atmospheric temperatures do or when barometric pressures rise (Kumar et al, 2009). Plot of soil gas measurements vs. time of sampling.…”

Section: External Forcingmentioning

confidence: 99%

CO2 escapes in the Laacher See region, East Eifel, Germany: Application of natural analogue onshore and offshore geochemical monitoring

Gal

Brach

Braibant

et al. 2011

International Journal of Greenhouse Gas Control

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“…During this process, very small fractures are formed in the rocks, which provides more radon contribution to the soil gas or water near the Earth's surface. A decreasing radon anomaly may occur as a result of the squeezing effect of compres-sional stress in the rock, which changes the porosity of soil at a microscale [5].…”

Section: Resultsmentioning

confidence: 99%

Radon Monitoring in Groundwater and Soil Gas of Sakhalin Island

Georgy¹,

Rafael²,

Ivan³

2015

GEP

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A groundwater radon monitoring in the southern and western part of Sakhalin Island was carried out in 2014 in order to study the correlation between radon anomalies and the seismic activity of the region. The objects of investigations were located within large tectonic dislocations of the island-the southern part of the Central Sakhalin fault and the central part of the West Sakhalin fault. The soil gas monitoring was carried out using a Sirad probe (Quarta-Rad, Russia) and the continuous radon monitoring in the groundwater was carried out using a Radon Seismic Station (CPC-05, NTM-Zashita, Russia). The effect of geochemical parameters, namely, temperature, pressure and conductivity on the radon emission has been studied. The present work contains an analytical protocol which is based on the analysis of radon emitted from the fault planes, a geochemical precursor when predicting the tectonic activity.

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“…During the last few decades, studies have shown useful data in the field of seismogeochemistry interpreted as geochemical precursory signals for impending earthquakes (Heinicke et al 1992;Igarashi et al 1995;Virk et al 2001;Steinitz et al 2003;Yang et al 2005Yang et al , 2006Zmazek et al 2005;Kumar et al 2009Kumar et al , 2015Walia et al 2009a;Fu et al 2015). Despite a full operative "earthquake prediction/early alarm" routine is still far to be accepted.…”

Section: Introductionmentioning

confidence: 99%

“…Geochemical precursors are recognized as short-term precursor and are monitored in many countries both by discrete and continuous tools (Inan et al 2008;Kuo et al 2010), often preceded by area papers to install "sensitive stations" in sites recognized sound, during strong earthquakes in the past too, mostly if the role of fluids in triggering earthquakes is important (i.e., Italy, see Quattrocchi 1999). Radon is proved to be as one of the most reliable geochemical precursor (Wakita et al 1980;Fleischer 1981;Igarashi and Wakita 1990;Heinicke et al 1992;Igarashi et al 1995;Virk et al 2001;Steinitz et al 2003;Yang et al 2005;Zmazek et al 2005;Kumar et al 2009;Walia et al 2009a;Fu et al 2017a, b). Virk and Singh (1994) reported precursory radon anomalies simultaneously in both soil-gas and groundwater 5 days before the Uttarkashi Earthquake with a moment magnitude of 6.8 occurred on 20 October 1991, in Garhwal Himalayas, India.…”

Section: Introductionmentioning

confidence: 99%

Preseismic anomalies in soil-gas radon associated with 2016 M 6.6 Meinong earthquake, Southern Taiwan

Fu¹,

Walia²,

Yang³

et al. 2017

Terr. Atmos. Ocean. Sci.

Self Cite

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Taiwan is tectonically situated in a terrain resulting from the oblique collision between the Philippine Sea plate and the continental margin of the Asiatic plate, with a continuous stress causing the density of strong-moderate earthquakes and regional active faults. The continuous time series of soil radon for earthquake studies have been recorded and some significant variations associated with strong earthquakes have been observed. Earthquake prediction is not still operative but these correlations should be added to the literature about seismo-geochemical transients associated to strong earthquakes. Rain-pore pressure related variations, crustal weakness at the studied faults system is consistent with the simultaneous radon anomalies observed. During the observations, a significant increase of soil radon concentrations was observed at Chunglun-T1 (CL-T1), Hsinhua (HH), Pingtung (PT), and Chihshan (CS) stations approximately two weeks before the Meinong earthquake (M L = 6.6, 6 February 2016) in Southern Taiwan. The precursory changes in a multi-stations array may reflect the preparation stage of a large earthquake. Precursory signals are observed simultaneously and it can apply certain algorithms the approximate location and magnitude of the impending earthquake.

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Earthquake precursory studies in Kangra valley of North West Himalayas, India, with special emphasis on radon emission

Cited by 60 publications

References 15 publications

CO2 escapes in the Laacher See region, East Eifel, Germany: Application of natural analogue onshore and offshore geochemical monitoring

CO2 escapes in the Laacher See region, East Eifel, Germany: Application of natural analogue onshore and offshore geochemical monitoring

Radon Monitoring in Groundwater and Soil Gas of Sakhalin Island

Preseismic anomalies in soil-gas radon associated with 2016 M 6.6 Meinong earthquake, Southern Taiwan

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