Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/4391
DC Field | Value | Language |
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dc.contributor.authorall | Baciu, C.; Faculty of Environmental Sciences, Babes-Bolyai University, Cluj-Napoca, Romania | en |
dc.contributor.authorall | Etiope, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | Cuna, S.; National Research and Development Institute for Isotopic and Molecular Technologies, Cluj-Napoca, Romania | en |
dc.contributor.authorall | Spulber, L.; Faculty of Environmental Sciences, Babes-Bolyai University, Cluj-Napoca, Romania | en |
dc.date.accessioned | 2008-12-01T13:23:26Z | en |
dc.date.available | 2008-12-01T13:23:26Z | en |
dc.date.issued | 2008-11 | en |
dc.identifier.uri | http://hdl.handle.net/2122/4391 | en |
dc.description.abstract | The paper describes a case of a natural emission of methane from soil in an urban development area, generating a significant risk for the local population and buildings, due to gas explosiveness and asphyxiation potential. The site is located on the south-western margin of the East-European Platform in eastern Romania, in a hydrocarbon-prone area crossed by the Pericarpathian lineament and regional faults. Molecular composition of gas and stable isotopic analyses of methane (CH4>90%, δ to the power of 13 C1: -49.4‰, δD1: -173.4‰) indicate a dominant thermogenic origin, with significant amounts of C2-C5 alkanes (~5%), likely migrating through faults from a deep reservoir. Possible candidates are the Saucesti and Secuieni gas fields, located in the same petroleum system. Two surface geochemical surveys, based on closed-chamber flux measurements, were performed to assess the degassing intensity and the extent of the affected area. Methane fluxes from soil reach orders of 10 to the power of 4 mg m to the power of -2 day to the power of -1. Gas seepage mainly occurs in one zone 30 000 m2 wide, and it is likely controlled by channeling along a fault and gas accumulation in permeable sediments and shallow subsoil. The estimated total CH4 emission is about 40 t year to the power of -1 CH4, of which 8–9 t year to the power of -1 are naturally released from soil and 30–35 t year to the power of -1 are emitted from shallow boreholes. These wells have likely channeled the gas accumulated in shallow alluvial sediment but gas flux from soil is still high and mitigation measures are needed to reduce the risk for humans and buildings. | en |
dc.language.iso | English | en |
dc.publisher.name | Blackwell Publishing Ltd | en |
dc.relation.ispartof | Geofluids | en |
dc.relation.ispartofseries | 4 / 8 (2008) | en |
dc.subject | gas hazard | en |
dc.subject | methane seepage | en |
dc.subject | soil degassing | en |
dc.subject | thermogenic gas | en |
dc.title | Methane seepage in an urban development area (Bacau, Romania): origin, extent, and hazard | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 311-320 | en |
dc.subject.INGV | 03. Hydrosphere::03.04. Chemical and biological::03.04.05. Gases | en |
dc.identifier.doi | 10.1111/j.1468-8123.2008.00228.x | en |
dc.relation.references | Abrams MA (2005) Significance of hydrocarbon seepage relative to petroleum generation and entrapment. Marine and Petroleum Geology, 22, 457–77. Chilingar GV, Endres B (2005) Environmental hazards posed by the Los Angeles Basin urban oilfields: an historical perspective of lessons learned. Environmental Geology, 47, 302–17. Ciotoli G, Etiope G, Guerra M, Lombardi S, Duddridge GA, Grainger P (2005) Migration and behaviour of gas injected into a fault in low-permeability ground. Quarterly Journal of Engineering Geology and Hydrogeology, 38, 305–20. Clarke RH, Cleverly RW (1991) Leakage and post-accumulation migration. In: Petroleum migration (eds England WA, Fleet AJ), Geological Society Special Publication, 59, 265–71. Etiope G (2008) Natural emissions of methane from geological seepage in Europe. Atmospheric Environment, doi: 10.1016/ j.atmosenv.2008.03.014. Etiope G, Klusman RW (2002) Geologic emissions of methane to the atmosphere. Chemosphere, 49, 777–89. Etiope G, Baciu C, Caracausi A, Italiano F, Cosma C (2004) Gas flux to the atmosphere from mud volcanoes in eastern Romania. Terra Nova, 16, 179–84. Etiope G, Papatheodorou G, Christodoulou D, Favali P, Ferentinos G (2005) Gas hazard induced by methane and hydrogen sulfide seepage in the NW Peloponnesus petroliferous basin (Greece). Terrestrial, Atmospheric and Ocean Sciences, 16, 897– 908. Etiope G, Martinelli G, Caracausi A, Italiano F (2007) Methane seeps and mud volcanoes in Italy: gas origin, fractionation and emission to the atmosphere. Geophysical Research Letters, 34, L14303, doi: 10.1029/2007GL030341. Etiope G, Feyzullayev A, Baciu CL (2008a) Terrestrial methane seeps and mud volcanoes: a global perspective of gas origin. Marine and Petroleum Geology, doi: 10.1016/j.marpetgeo. 2008.03.001 (in press). Etiope G, Lassey KR, Klusman RW, Boschi E (2008b) Reappraisal of the fossil methane budget and related emission from geologic sources. Geophysical Research Letters, 35, L09307, doi:10.1029/ 2008GL033623. Filipescu MN, Huma I (1979) Geochemistry of Natural Gases. Ed. Academiei, Bucharest, 175 pp (in Romanian). Guerra M, Etiope G (1999) Effects of gas-water partition, channelling and stripping processes upon radon and helium gas distribution in fault areas. Geochemical Journal, 33, 141– 51. Jones VT (2000) Subsurface Geochemical Assessment of Methane Gas Occurrences. Playa Vista development. First phase project. Los Angeles, CA. Report by Exploration Technologies, Inc. http://eti-geochemistry.com/Report-04-2000. Judd AG (2004) Natural seabed seeps as sources of atmospheric methane. Environmental Geology, 46, 988–96. Laforservice (2005) Final Report on the Gas Emissions Research, Gheraiesti Bacau Area. Unpublished internal report. 15 pp (in Romanian). Livingston GP, Hutchinson GL (1995) Enclosure-based measurement of trace gas exchange: applications and sources of error. In: Biogenic Trace Gases: Measuring Emissions from Soil and Water. Methods in Ecology (eds Matson PA, Harriss RC), pp. 14–51. Blackwell Science Cambridge University Press, London. Lundegard PD, Sweeney RE, Ririe GT (2000) Soil gas methane at petroleum contaminated sites: forensic determination of origin and source. Environmental Forensics, 1, 3–10. Martinelli G, Judd A (2004) Mud volcanoes of Italy. Geological Journal, 39, 49–61. Matenco L, Bertotti G, Cloething S, Dinu C (2003) Subsidence analysis and tectonic evolution of the external Carpathian–Moesian Platform region during Neogene. Sedimentary Geology, 156, 71–94. Murgeanu G, Dumitrescu I, Mirauta O, Sandulescu M, Stefanescu M, Bandrabur T (1968) Geological Map of Romania 1:200,000, Sheet Bacau. Geological Institute, Bucharest. Nagao M, Takatori T, Oono T, Iwase H, Iwadate K, Yamada Y, Nakajima M (1997) Death due to a methane gas explosion in a tunnel on urban reclaimed land. American Journal of Forensic Medicine and Pathology, 18, 135–9. Paraschiv D (1979) Romanian Oil and Gas Fields. Institute of Geology and Geophysics, Technical and Economical Studies, 13, Bucharest, 382 pp. Schoell M (1983) Genetic characterization of natural gases. American Association of Petroleum Geologists Bulletin, 67, 2225–38. Thielemann T, Lucke A, Schleser GH, Littke R (2000) Methane exchange between coal-bearing basins and the atmosphere: the Ruhr Basin and the Lower Rhine Embayment, Germany. Organic Geochemistry, 31, 1387–408. Vasiliu VE, Batistatu M (2005) Report on the Investigations on Gas Emissions in North-Bacau Gheraiesti Area. Unpublished Internal Report. 4 pp (in Romanian). | en |
dc.description.obiettivoSpecifico | 3.8. Geofisica per l'ambiente | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Baciu, C. | en |
dc.contributor.author | Etiope, G. | en |
dc.contributor.author | Cuna, S. | en |
dc.contributor.author | Spulber, L. | en |
dc.contributor.department | Faculty of Environmental Sciences, Babes-Bolyai University, Cluj-Napoca, Romania | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.department | National Research and Development Institute for Isotopic and Molecular Technologies, Cluj-Napoca, Romania | en |
dc.contributor.department | Faculty of Environmental Sciences, Babes-Bolyai University, Cluj-Napoca, Romania | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | National Research and Development Institute for Isotopic and Molecular Technologies, Cluj-Napoca, Romania | - |
crisitem.author.dept | Faculty of Environmental Science, Babes¸ -Bolyai University, Cluj-Napoca, Romania | - |
crisitem.author.orcid | 0000-0001-8614-4221 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 03. Hydrosphere | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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