Helium soil-gas survey of a portion of the McDermitt caldera complex, Malheur County, Oregon

1981 ◽  
Author(s):  
G. Michael Reimer
Keyword(s):  
Soil Gas ◽  
Soil Gas Survey

Choosing an appropriate soil-gas survey method

1992 ◽  
Vol 21 (1) ◽  
pp. 27-35 ◽  
Author(s):  
Nic Korte ◽  
Sandra Wagner ◽  
Jon Nyquist
Keyword(s):  
Soil Gas ◽  
Survey Method ◽  
Soil Gas Survey

Water geochemistry and soil gas survey at Ungaran geothermal field, central Java, Indonesia

2012 ◽  
Vol 229-230 ◽  
pp. 23-33 ◽  
Author(s):  
Nguyen Kim Phuong ◽  
Agung Harijoko ◽  
Ryuichi Itoi ◽  
Yamashiro Unoki
Keyword(s):  
Geothermal Field ◽  
Soil Gas ◽  
Water Geochemistry ◽  
Central Java ◽  
Soil Gas Survey

scholarly journals Soil gas geochemical behaviour across buried and exposed faults during the 24 august 2016 central Italy earthquake

2016 ◽  
Vol 59 ◽  
Author(s):  
Giancarlo Ciotoli ◽  
Alessandra Sciarra ◽  
Livio Ruggiero ◽  
Aldo Annunziatellis ◽  
Sabina Bigi
Keyword(s):  
Active Fault ◽  
Central Italy ◽  
Soil Gas ◽  
Seismic Sequence ◽  
Spatial Behaviour ◽  
Fault Rupture ◽  
Central Italy Earthquake ◽  
Geochemical Behaviour ◽  
Buried Fault ◽  
Soil Gas Survey

<p>Following the earthquake (M<sub>L</sub>=6.0) of 24 August 2016 that affected large part of the central Apennine between the municipalities of Norcia (PG) and Amatrice (RI) (central Italy), two soil gas profiles (i.e., <sup>222</sup>Rn, <sup>220</sup>Rn, CO<sub>2</sub> and CO<sub>2</sub> flux) were carried out across buried and exposed coseismic fault rupture of the Mt. Vettore fault during the seismic sequence. The objective of the survey was to explore the mechanisms of migration and the spatial behaviour of different gas species near still-degassing active fault. Results provide higher gas and CO<sub>2</sub> flux values (about twice for <sup>222</sup>Rn and CO<sub>2</sub> flux) in correspondence of the buried sector of the fault than those measured across the exposed coseismic rupture. Anomalous peaks due to advective migration are clearly visible on both side of the buried fault (profile 1), whereas the lower soil gas concentrations measured across the exposed coseimic rupture (profile 2) are mainly caused by shallow and still acting diffusive degassing associated to faulting during the seismic sequence. These results confirm the usefulness of the soil gas survey to spatially recognise the shallow geometry of hidden faults, and to discriminate the geochemical migration mechanisms occurring at buried and exposed faults related to seismic activity.</p>

scholarly journals Atmospheric and Soil Methane Concentrations Integrating a New Gas Detection Technology

Proceedings ◽  
2020 ◽  
Vol 67 (1) ◽  
pp. 7
Author(s):  
Ana Maria Carmen Ilie ◽  
Carmela Vaccaro
Keyword(s):  
Low Cost ◽  
Ground Surface ◽  
Soil Gas ◽  
Environmental Data ◽  
Gas Detection ◽  
Advantages And Disadvantages ◽  
Radon Gas ◽  
Detection Technology ◽  
Gas Measurements ◽  
Soil Gas Survey

Cities are major contributors to greenhouse gas emissions (GHG) due to the high density of urbanization, numerous industrial centers, and intensive agricultural activities. This study focused on soil methane and radon gas measurements in the subsurface, as well as in the atmosphere. Measurements were conducted using new gas detection instrumentation and as low-cost devices for methane gas concentrations. Maximum soil radon gas concentration was observed to be approximately 1770 ± 582 Bq/m3 at a depth of 1 m below the ground surface. The soil comprised of 64.31% sand, 20.75% silt, and 14.94% clay, and 0.526 ppm of uranium. The maximum concentration of methane was about 0.06%, at a depth of 1 m into the soil, characterized by 83% sand, 8.96% silt, and 7.89% clay. Moreover, this study focused on a better understanding of the advantages and disadvantages of new soil gas detection technology. The results and findings of environmental data obtained from the soil gas survey were shared with the community, whose involvement was critical in the data acquisition process.

Soil gas survey in and around Shanchiao fault of northern Taiwan for establishing continuous monitoring station

2018 ◽  
Vol 66 (5) ◽  
pp. 1213-1221 ◽  
Author(s):  
Arvind Kumar ◽  
Vivek Walia ◽  
Yi-Chun Sung ◽  
Shih-Jung Lin ◽  
Ching-Chou Fu ◽  
...  
Keyword(s):  
Continuous Monitoring ◽  
Soil Gas ◽  
Monitoring Station ◽  
Soil Gas Survey ◽  
Northern Taiwan

scholarly journals Rn and CO<sub>2</sub> geochemistry of soil gas across the active fault zones in the capital area of China

2014 ◽  
Vol 2 (2) ◽  
pp. 1729-1757 ◽  
Author(s):  
X. Han ◽  
Y. Li ◽  
J. Du ◽  
X. Zhou ◽  
C. Xie ◽  
...  
Keyword(s):  
Active Fault ◽  
Emission Rate ◽  
Active Faults ◽  
Soil Gas ◽  
Spatiotemporal Variations ◽  
Gas Emission ◽  
North East ◽  
The North ◽  
Soil Gas Survey ◽  
Soil Gas Sampling

Abstract. The present work is proposed to investigate the spatiotemporal variations of soil gas Rn and CO2 across the active faults in the capital area of China, for the understanding of fault activities and the assessment of seismic hazard. A total of 342 soil gas sampling sites were measured twice in 2011 and 2012 along seven profiles across four faults. The results of soil gas surveys show that in each profile, due to the variation of gas emission rate, the concentrations of Rn and CO2 changed in the vicinity of faults. Spatial distributions of Rn and CO2 in the study areas were different from each other, which was attributed to soil types affecting the existence of Rn and CO2. Compared with 2011 soil gas survey, the increases of Rn and CO2 concentrations in 2012 were related to the enhancement of seismic activities in the capital area of China. Our results indicate that special attention for seismic monitoring should be paid to Xinbaoan-Shacheng Fault and the north east segment of Tangshan Fault in the future.

scholarly journals Soil gas survey for tracing seismogenic faults: A case study in the Fucino Basin, central Italy

1998 ◽  
Vol 103 (B10) ◽  
pp. 23781-23794 ◽  
Author(s):  
G. Ciotoli ◽  
M. Guerra ◽  
S. Lombardi ◽  
E. Vittori
Keyword(s):  
Central Italy ◽  
Soil Gas ◽  
Seismogenic Faults ◽  
Fucino Basin ◽  
Soil Gas Survey
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