Hydrogeochemical changes before and after a major earthquake

Claesson, Lillemor; Skelton, Alasdair; Graham, Colin M.; Dietl, Carlo; Mörth, Magnus; Torssander, Peter; Kockum, Ingrid

doi:10.1130/g20542.1

Cited by 169 publications

(167 citation statements)

References 22 publications

Supporting

Mentioning

150

Contrasting

Order By: Relevance

“…27) Claesson et al 29) observed significant Cu, Zn, Mn, and Cr anomalies in meteoric waters from a 1500 m-deep borehole before a submarine earthquake (M5.8) occurred north of Iceland. Blanc et al 13) confirmed high Mn concentrations of up to 500 mM in sedimentary interstitial waters in the décollement and thrust faults of the Barbados accretionary complex, where Mn-rich fluids are thought to originate from a reduction of MnO 2 associated with the oxidation of organic carbon.…”

Section: )mentioning

confidence: 99%

Tectonic pumping: earthquake-induced chemical flux detected in situ by a submarine cable experiment in Sagami Bay, Japan

Gamo

Okamura

Mitsuzawa

et al. 2007

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

View full text Add to dashboard Cite

Abstract:We successfully deployed an in situ automatic chemical analyzer sensitive to manganese (Mn) in seawater for a period of 81 days for the first time on the deep seafloor of Sagami Bay along a convergent plate boundary south of Japan. The in situ Mn analyzer (GAMOS-IV) was connected to a submarine cable as a means to supply power and to relay real time data. During the observation period from April 5 till June 25, 2006, the amount of measured Mn was seen to increase abruptly up to 10 times that of the background level only on April 21, probably triggered by a M5.8 earthquake which occurred $7 km south-southwest of the observation site. This study demonstrates the suitability of submarine cables for the long-term geochemical monitoring of deep sea environments.

show abstract

Section: )mentioning

confidence: 99%

Tectonic pumping: earthquake-induced chemical flux detected in situ by a submarine cable experiment in Sagami Bay, Japan

Gamo

Okamura

Mitsuzawa

et al. 2007

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

View full text Add to dashboard Cite

show abstract

“…Extensive earthquake prediction studies have been mainly carried out in Russia, China, and Japan as well as in other active seismic regions in the USA, India Italy, etc. On the contrary, very few earthquake prediction studies had been performed in continental areas that are classified as stable regions for seismicity in spite of the potential damage of unexpected earthquakes because of poor building Tsunogai and Wakita, 1995;Igarashi and Wakita;1995;Koizumi et al, 1996;Wakita, 1996;Sugisaki et al, 1996;Roeloffs and Quilty, 1997;Toutain et al, 1997;Nishizawa et al, 1998;Ito et al, 1999;Toutain and Baubron, 1999;Martinelli, 2000;Chia et al, 2001;Virk et al, 2001;Salazar et al, 2002;Chadha et al, 2003;Claesson et al, 2004;Song et al, 2006;Pérez and Hernández, 2007;Padrón et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Searching and detecting earthquake geochemical precursors in CO2-rich groundwaters from Galicia, Spain

et al. 2008

View full text Add to dashboard Cite

The northwestern region of the Iberian Peninsula was traditionally considered a seismically stable area. However, the 1995 and 1997 Galicia earthquakes of magnitude 4.6 and 5.3 produced significant damage in the region (intensity EMS: V), and these events changed the seismic hazard map used for the building code in Spain. Searching for earthquake precursors of these seismic events was performed, and precursory geochemical signatures of the 1995 and 1997 Galicia earthquakes were detected. These precursory signatures were observed in CO 2 -rich groundwaters from a 120 m deep well at Cabreiroá (Ourense, Galicia), ~90 km distance from the epicentres. Secular variations of the dissolved Cl -in these CO 2 -rich groundwaters showed clearly an increase trend three months before the occurrence of two earthquakes of magnitude 4.6 (November 29 and December 24, 1995) in Lugo (Galicia). After the precursory variations of Cl -prior to the earthquakes in 1995, a continuous radon monitoring system was installed at Cabreiorá's well. A significant increase of radon activity in the CO 2 -rich ground waters was detected four weeks prior to the magnitude 5.3 Galicia earthquake of May 21, 1997. Precursory changes in the chemical and isotopic composition of terrestrial fluids have been mainly attributed to the development of microcracks caused by the regional tectonic strain. The occurrence of these precursory geochemical signatures of CO 2 -rich groundwaters of magmatic origin in the NW Iberian peninsula probably suggests that high fluid pressure at depth play a major role in triggering earthquakes in the region.

show abstract

“…The short-term hydrogeochemical precursors for earthquakes (King et al, 1995;Favara et al, 2001;Quattrocchi et al, 2003;Du et al, 2008;Dadomo et al, 2009), the co-seismic response of hydrochemistry Yang et al, 2006;Reddy et al, 2011) and post-seismic geochemical changes in hot springs have been observed throughout the world (Thomas, 1988;Woith et al, 2013;Italiano et al, 2010;Zhou et al, 2010;Malakootian and Nouri, 2010;İnan et al, 2012). Claesson et al (2004) observed changes in multicomponent constituents and δ 18 O of groundwater due to a seismic event (M = 5.1) in northern Iceland. Isaksen et al (1997) observed increased Cl − concentration in spring water 5 days prior to an M L = 5.2 earthquake.…”

Section: Introductionmentioning

confidence: 99%

Hydrochemical characteristics of hot spring waters in the Kangding district related to the Lushan MS = 7.0 earthquake in Sichuan, China

Chen

Zhou

et al. 2015

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Hydrogeochemistry of 10 hot springs in the Kangding district was investigated by analyzing cation and anion concentrations in the spring water. The water samples were collected in the 5 days after the Lushan M S = 7.0 earthquake, which occurred on 20 April 2013. The spring waters are classified into seven chemical types based on their hydrochemical compositions. Compared with hydrochemical data before the Lushan earthquake, concentrations of Ca 2+ , HCO − 3 and total dissolved solid (TDS) in water samples from the Guanding, Erdaoqiao, Gonghe, Erhaoying, Tianwanhe and Caoke springs significantly increased, which may be the result of a greater increase in groundwater from carbonate rocks, and water-carbonate rock interactions, enhanced by the increment of CO 2 . Concentrations of Na + , Cl − and SO 2− 4 in water samples from the Guanding, Zheduotang, Xinxing and Gonghe springs decreased, indicating a dilution of shallow waters. Concentrations of Na + and SO 2− 4 in water samples from the Erhaoying spring water increased, which may be attributed to water-granite interactions enhanced by H 2 S. The results indicated that hydrochemical components of spring water could be used as an effective indicator for earthquakes.

show abstract

Hydrogeochemical changes before and after a major earthquake

Cited by 169 publications

References 22 publications

Tectonic pumping: earthquake-induced chemical flux detected in situ by a submarine cable experiment in Sagami Bay, Japan

Tectonic pumping: earthquake-induced chemical flux detected in situ by a submarine cable experiment in Sagami Bay, Japan

Searching and detecting earthquake geochemical precursors in CO<sub>2</sub>-rich groundwaters from Galicia, Spain

Hydrochemical characteristics of hot spring waters in the Kangding district related to the Lushan <i>M</i><sub>S</sub> = 7.0 earthquake in Sichuan, China

Contact Info

Product

Resources

About

Hydrogeochemical changes before and after a major earthquake

Cited by 169 publications

References 22 publications

Tectonic pumping: earthquake-induced chemical flux detected in situ by a submarine cable experiment in Sagami Bay, Japan

Tectonic pumping: earthquake-induced chemical flux detected in situ by a submarine cable experiment in Sagami Bay, Japan

Searching and detecting earthquake geochemical precursors in CO<sub>2</sub>-rich groundwaters from Galicia, Spain

Hydrochemical characteristics of hot spring waters in the Kangding district related to the Lushan &lt;i&gt;M&lt;/i&gt;&lt;sub&gt;S&lt;/sub&gt; = 7.0 earthquake in Sichuan, China

Contact Info

Product

Resources

About

Hydrochemical characteristics of hot spring waters in the Kangding district related to the Lushan <i>M</i><sub>S</sub> = 7.0 earthquake in Sichuan, China