Reactive Flow Modeling of Hydrothermal Systems

Kühn, Michael

doi:10.1007/b13902

Cited by 50 publications

(38 citation statements)

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“…All of the samples fall to the right of the meteoric water line in the Tatun area. dient, then reacts with minerals or host rocks, magmatic fluids, formation water or seawater that may have changed composition in the reservoir, and is finally driven to the surface by thermal convection (Todd 1980;Henley and Ellis 1983;Giggenbach 1988;Nicholson 1993;Kühn 2004). Accordingly, several studies suggest that the possible source components involved in producing thermal water or hot spring include meteoric water, seawater/formation water, magmatic fluids, host rocks and clay minerals (Craig 1963;Ellis and Mahon 1964;Seyfried and Bischoff 1981).…”

Section: Source Components Of Hot Springsmentioning

confidence: 99%

Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Liu¹,

Song²,

Chen³

et al. 2011

Terr. Atmos. Ocean. Sci.

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This paper systematically surveyed distribution and field occurrences of 13 hot springs as well as geochemical investigation on the geothermal area of the Tatun Volcano Group (TVG). According to Piper diagrams, pH values, field occurrences and water-rock interactions, these hot springs can be classified into three types: (1) Type I, SO 4 2-acidic water where the reservoir is located in the Wuchishan Formation; (2) Type II, HCO 3 -a near neutral spring where waters originate from the volcanic terrane (andesite); and (3) Type III, Cl --rich acidic water where waters emanate from shallower Wuchishan Formation. In terms of isotopic ratio, δD and δ 18O values, two groups of hot spring can be recognized. One is far away from the meteoric water line of the Tatun area with values ranging between -26.2‰ and -3.5‰, and from -3.2‰ to 1.6‰, respectively. However, another close to the meteoric water line of the Tatun area is between -28.4‰ and -13.6‰, and from -5.5‰ to -4.2‰, respectively. In addition, the δ 34 S value of thermal waters can also be distinguished into two groups, one ranging from 26.1‰ to 28.5‰, and the other between 0.8‰ and 7.8‰. Based on field occurrences and geochemical characteristics, a model has been proposed to illustrate the origin of these hot springs.

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Section: Source Components Of Hot Springsmentioning

confidence: 99%

Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Liu¹,

Song²,

Chen³

et al. 2011

Terr. Atmos. Ocean. Sci.

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“…Such mass wasting events all involve the displacement of material from the Fig. 1 Conceptual model of a hydrothermal system in, a high-relief volcano (modified after Goff and Janik 2000) and b caldera (modified after Kuhn 2004) upper part of the volcano to the surrounding valleys. They can be triggered by gravitational instability (often in response to heavy rainfall), increase in pore pressure, reduction of rock strength, volcano-tectonic earthquake or intrusion of magma.…”

Section: Hydrothermal Systemmentioning

confidence: 99%

Groundwater flow and volcanic unrest

Jasim

Hemmings

Mayer

et al. 2018

Advances in Volcanology

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Hydrology around active volcanoes is strongly controlled by the interaction between groundwater, and the fluids, dissolved elements and heat associated with magmatic intrusion. The chemical and mechanical processes associated with magmatic unrest can result in observable changes in the hydrothermal system. Consequently, observations of chemical and physical hydrothermal variations may provide insights into the state of volcanic activity. Additionally, the interaction between hydrological and volcanic systems leads to the presence of high-temperature, pressurised, and often acidic fluids, which add to, and intensify, the volcanic hazard. In the following chapter we present the major components of, and controls on, magmatic hydrothermal systems focusing on the mutual perturbation between the groundwater flow system and the volcanic system. We explore how these conditions can be modified by volcanic unrest and we identify feedbacks between dynamic hydrothermal behaviour and on-going unrest. The interaction between these systems, and therefore the associated monitoring signals, are the result of complex groundwater-volcano coupling within multi-phase flow system in evolving lithologies. Nonetheless, detailed monitoring of hydrothermal and hydrological behaviour can provide insights into unrest and the evolution of hazards at restless volcanoes.

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“…Sementara sampel lain terindikasi merupakan immature waters atau tidak dalam keadaan kesetimbangan, sehingga kurang dapat diandalkan untuk perhitungan geotermometer dikarenakan kandungan Mg yang terlalu tinggi. Kandungan Mg yang tinggi tersebut menunjukkan adanya pencampuran antara fluida panas bumi dengan Mg rendah dan air tanah yang lebih dangkal dengan kandungan Mg tinggi (Kuhn, 2004;Murray, 1996). Adanya pencampuran ini tidak memungkinkan dihitungnya geotermometer silika secara langsung.…”

Section: Estimasi Temperatur Reservoarunclassified

Karakteristik Kimia Dan Isotop Fluida Panas Bumi Daerah Gunung Tampomas, Jawa Barat

Prasetio¹,

Laksminingpuri²,

Satrio³

2018

Ris.Geo.Tam

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ABSTRAK Gunung Tampomas merupakan salah satu daerah di Jawa Barat yang memiliki manifestasi panas bumi berupa mata air panas di sekitarnya. Penelitan potensi dan karakterisasi reservoar panas bumi Gunung Tampomas telah dilakukan dengan menggunakan metode kimia serta isotop alam 18 O dan 2 H (deuterium) dari mata air panas dan dingin di sekitar Gunung Tampomas dengan temperatur mata air berkisar antara 20ºC hingga 50ºC. Interpretasi hasil analisis tersebut dimaksudkan untuk mengetahui karakteristik reservoar seperti asal-usul fluida, temperatur reservoar dan evolusi fluida. Hasil analisis menunjukkan bahwa sebagian mata air panas Gunung Tampomas yaitu Ciseupan dan Ciuyah memiliki kandungan klorida tinggi yang mengindikasikan fluida berasal dari reservoar panas bumi. Sementara berdasarkan perhitungan geotermometer daerah panas bumi Gunung Tampomas memiliki potensi panas bumi yang tergolong medium entalpi dengan temperatur berkisar 120-220°C. Fluida panas bumi berasal dari air meteorik dengan sedikit pencampuran dengan air magmatik. Berdasarkan data geokimia, reservoar Gunung Tampomas diperkirakan memiliki reservoar yang terletak cukup dalam.Kata kunci: Gunung Tampomas, panas bumi, reservoar, metode kimia, metode isotop. ABSTRACT Mount Tampomas is one of many areas in West Java that has several geothermal manifestations. A study about geothermal potential and reservoir has been done using chemistry and natural isotopes methods taken from hot springs and cold springs around Mount

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Reactive Flow Modeling of Hydrothermal Systems

Cited by 50 publications

References 0 publications

Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Groundwater flow and volcanic unrest

Karakteristik Kimia Dan Isotop Fluida Panas Bumi Daerah Gunung Tampomas, Jawa Barat

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