Long range gas-geochemical anomalies of a remote earthquake recorded simultaneously at distant monitoring stations in India

A geochemical approach to earthquake reconnaissance at the Baratang mud volcano, Andaman and Nicobar Islands

“…The geochemical instrumentation installed at the Baratang laboratory is part of a seismo-geochemical monitoring network being set up in India. Apart from this observatory there are two more sites which are located in the mainland of India, one at the Bakreswar [23 o 52 0 30 00 N; 87 o 22 0 30 00 E] geothermal area, West Bengal and the other at Tatta Pani [33 o 14 0 16 00 N; 74 o 24 0 43 00 E] thermal spring site at Jammu and Kashmir (Chaudhuri et al, 2010(Chaudhuri et al, , 2011. These three field stations, located at large space scale and in different geological environments, have identical instrumentation and form a multi-parametric and multi-station unit to enable a better understanding of geochemical anomalies that arise out of seismicity.…”

Measurement of radon in ground waters of the Western Caucasus for seismological application

“…However, it is unknown what mathematical model may be used for reliable association of the anomalies with earthquakes. Some authors (e.g., Zmazek et al, 2005;Choubey et al, 2009;Chaudhuri et al, 2011) have chosen "splashes" of 2s from the average value of the radon concentration in the researched water. We have applied this choice to our data.…”

“…Some researchers observed a correlation between diurnal Rn variation and earth tides (e. g., Barnet et al, 1997;Millich et al, 1999;Weinlich et al, 2006;Chaudhuri et al, 2011). The power Fig.…”

“…Therefore, although some meteorological processes (for example, prolonged rain) may alter the water radon concentration, these changes are small compared to changes caused by seismic influences. Other researchers (e.g., Weinlich et al, 2006;Chaudhuri et al, 2011) too have shown that in some regions there is no correlation between Rn data and the meteorological parameters.…”

“…Seismological application of radon measurements in ground waters is repeatedly described in international publications (e.g., Ulomov and Mavashev, 1971;Asimov et al, 1979;Hauksson and Goddard, 1981;Sugisaki and Sugiura, 1986;Friedmann, 1991;Monnin and Seidel, 1992;Isotopic.., 1993;King, 1993;Igarashi et al, 1995;Ghose et al, 1998;Biagi et al, 2000;Heinicke and Koch, 2000;Hartmann and Levy, 2005;Das et al, 2005;Kuo et al, 2006b;Chaudhuri et al, 2007;Choubey et al, 2009;Ghosh et al, 2009;Wang and Manga, 2010;Chaudhuri et al, 2011;Ren et al, 2012;Tsunomori and Tanaka, 2014;Kuo, 2014).…”