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Carbon Geochemistry of Gas Hydrate-associated Sediments in the Southwestern Taiwan Basin
southwestern Taiwan Basin carbon geochemistry environmental conditions archaea gas hydrate
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2018/4/10
Marine gas hydrates, one of the largest methane reservoirs on Earth, may greatly affect the deep sea sedimentary environment and biogeochemistry; however, the carbon geochemistry in gas hydrate-bearin...
Gas geochemistry for the Los Azufres (Michoacán) geothermal reservoir, México
Los Azufres geothermal field gas geochemistry geothermal gas equilibria reservoir exploitation
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2015/9/10
Gas data of the Los Azufres geothermal field were analyzed using a method based on equilibrium of the Fischer-
Tropsch (FT) reaction: CH4 + 2H2O = 4H2 +CO2 and on the combined pyrite-hematite-magneti...
The 8th ICGG International Conference on Gas Geochemistry Preface: Fluids and tectonics
fluids Geochemistry tectonics
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2015/9/2
The 8th International Conference on Gas Geochemistry provided the opportunity
for scientists from different countries to meet each other, exchange ideas on the
state of the art in gas geochemistry, ...
Temperature and pressure gas geoindicators at the Solfatara fumaroles (Campi Flegrei)
Fluid pressure temperature hydrothermal system sulfur volcanic jet hole jet hole gas system
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2015/8/27
Long time series of fluid pressure and temperature within a hydrothermal system feeding the Solfatara fumaroles are investigated here, on the basis of the chemical equilibria within the CO2–H2O–H2–CO ...
Gas discharges from four remote volcanoes in northern Chile (Putana, Olca, Irruputuncu and Alitar): a geochemical survey
Fluid geochemistry Subduction zone Volcanic risk Geochemical data Volcano monitoring
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2015/8/27
We analyzed gas samples collected from fumaroles and bubbling pools at Irruputuncu, Putana, Olca and Alitar volcanoes located in the central Andes volcanic zone (northern Chile). The Irruputuncu and P...
Thermochemical reduction of magnesium sulfate by natural gas: Insights from an experimental study
natural gas thermochemical sulfate reduction (TSR) carbon isotope fractionation
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2017/4/12
Thermochemical reduction of MgSO4 by natural gas was carried out in the presence of water. Chemical and carbon
isotopic variations were characterized with microcoulometry, gas chromatography, FT-IR, ...
Gas geochemical characteristics of hydrothermal plumes at the HAKUREI and JADE vent sites, the Izena Cauldron, Okinawa Trough
hydrothermal plume gas geochemical characteristics Okinawa Trough H2/CH4 ratio fluid-sediment interaction
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2017/8/9
Hydrothermal plumes above the HAKUREI and JADE sites, two high-temperature hydrothermal vent sites in the Izena Cauldron at the mid-Okinawa Trough, were investigated in order to gain a preliminary und...
Stable and noble gas isotopic study of thermal and groundwaters in northwestern Hokkaido, Japan and the occurrence of geopressured fluids
geopressured fluid hydrogen isotope oxygen isotope helium isotope Hokkaido
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2017/8/9
Thermal and groundwaters are distributed along the west coast and in the inland region of Northwestern Hokkaido, Japan. The waters in the latter group have relatively high temperatures. Stable (D, O) ...
Noble gas mass spectrometry with a compressor driven recycling system for improved sensitivity
noble gas geochemistry compressor turbo molecular pump
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2017/8/9
In order to increase the sensitivity of static-mode noble gas mass spectroscopic analysis, we have developed and tested a gas re-circulation system, which uses a commercially available turbo molecular...
Soil-gas radon/helium surveys in some neotectonic areas of NW Himalayan foothills, India
Soil-gas radon helium neotectonic areas
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2010/10/20
The present research is aimed at accessing the relationship between variation in the soil gases radon (222Rn) and helium (4He) and recently developed fissures and other neotectonic features in Nurpur ...
Anomalous Strong Reflections on High Resolution Seismic Data from the Turkish Shelf of the Eastern Black Sea: Possible Indicators of Shallow Hydrogen Sulphide-Rich Gas Hydrate Layers
Black Sea gas hydrate hydrogen sulphide high-resolution acoustic methods
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2009/7/7
Some strong reflections about 3 to 5 m thick were observed at depths of 25-60 metres below the sea floor using deep-towed, 5 kHz subbottom profiler data in the Turkish shelf and upper slope of the Ea...
Closed-system programmed-temperature pyrolysis on n-octadecane: Implications for the conversion of oil to gas
n-octadecane pyrolysis experiment gaseous hydrocarbon stable carbon isotope kinetic
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2017/8/10
The aim of this work is to determine the molecular and stable carbon isotope compositions of pyrolysates from normal octadecane and, then, to study methane generation kinetic and carbon isotope fracti...
Isotopic fractionation of SO2 and H2S gases during the absorption by KOH solution, with the application to volcanic gas monitoring at Miyakejima Island, Japan
volcanic gas Miyakejima isotopic fractionation diffusion sulfur
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2017/8/10
The chemical trap method has been used for monitoring of volcanic activity. In this method, a strong alkaline water solution was exposed in ambient air. Acidic gases, such as SO2, H2S, HCl and HF are ...
High-resolution profiles and nitrogen isotope tracing reveal a dominant source of nitrous oxide and multiple pathways of nitrogen gas formation in the central Arabian Sea
High-resolution profiles nitrogen isotope tracing reveal dominant source of nitrous oxide multiple pathways nitrogen gas formation in the central Arabian Sea
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2014/4/22
The oxygen minimum zone (OMZ) of the Arabian Sea is a significant source of nitrous oxide (N2O), yet the metabolism responsible for N2O production is unclear. High-resolution profiles identified peaks...