Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/714
DC Field | Value | Language |
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dc.contributor.authorall | Lewicki, J. L.; Lawrence Berkeley National Laboratory,Earth Sciences Division | en |
dc.contributor.authorall | Bergfeld, D.; U.S. Geological Survey | en |
dc.contributor.authorall | Cardellini, C.; Università di Perugia, Dipartimento di Scienze della Terra | en |
dc.contributor.authorall | Chiodini, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Granieri, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Varley, N.; Universidad de Colima, Facultad de Ciencias | en |
dc.contributor.authorall | Werner, C.; Institute of Geological and Nuclear Sciences, New Zealand | en |
dc.date.accessioned | 2006-02-14T11:20:42Z | en |
dc.date.available | 2006-02-14T11:20:42Z | en |
dc.date.issued | 2005 | en |
dc.identifier.uri | http://hdl.handle.net/2122/714 | en |
dc.description.abstract | We present a comparative study of soil CO2 flux ( ) measured by five groups (Groups 1–5) at the IAVCEI-CCVG Eighth Workshop on Volcanic Gases on Masaya volcano, Nicaragua. Groups 1–5 measured using the accumulation chamber method at 5-m spacing within a 900 m2 grid during a morning (AM) period. These measurements were repeated by Groups 1–3 during an afternoon (PM) period. Measured ranged from 218 to 14,719 g m–2 day–1. The variability of the five measurements made at each grid point ranged from ±5 to 167%. However, the arithmetic means of fluxes measured over the entire grid and associated total CO2 emission rate estimates varied between groups by only ±22%. All three groups that made PM measurements reported an 8–19% increase in total emissions over the AM results. Based on a comparison of measurements made during AM and PM times, we argue that this change is due in large part to natural temporal variability of gas flow, rather than to measurement error. In order to estimate the mean and associated CO2 emission rate of one data set and to map the spatial distribution, we compared six geostatistical methods: arithmetic and minimum variance unbiased estimator means of uninterpolated data, and arithmetic means of data interpolated by the multiquadric radial basis function, ordinary kriging, multi-Gaussian kriging, and sequential Gaussian simulation methods. While the total CO2 emission rates estimated using the different techniques only varied by ±4.4%, the maps showed important differences. We suggest that the sequential Gaussian simulation method yields the most realistic representation of the spatial distribution of , but a variety of geostatistical methods are appropriate to estimate the total CO2 emission rate from a study area, which is a primary goal in volcano monitoring research. | en |
dc.format.extent | 478 bytes | en |
dc.format.extent | 142437 bytes | en |
dc.format.mimetype | text/html | en |
dc.format.mimetype | text/html | en |
dc.language.iso | English | en |
dc.publisher.name | Springer-Verlag | en |
dc.relation.ispartof | Bulletin of Volcanology | en |
dc.subject | Carbon dioxide | en |
dc.subject | Soil gas | en |
dc.subject | Accumulation chamber method | en |
dc.subject | Geostatistics | en |
dc.subject | Masaya volcano | en |
dc.subject | Volcano monitoring | en |
dc.subject | Emission rates | en |
dc.title | Comparative soil CO2 flux measurements and geostatistical estimation methods on Masaya volcano, Nicaragua | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 1-30 | en |
dc.identifier.URL | http://www.springerlink.com | en |
dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.01. Geochemical exploration | en |
dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.07. Instruments and techniques | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques | en |
dc.identifier.doi | 10.1007/s00445-005-0423-9 | en |
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Van Nostrand Reinhold, New York Goovaerts P (2001) Geostatistical modeling of uncertainty in soil science. Geoderma 103:3–26 Hardy RL (1971) Multiquadric equations of topography and other irregular surfaces. J Geophys Res 76:1905–1915 Horrocks L, Burton M, Francis P (1999) Stable gas plume composition measured by OP-FTIR spectroscopy at Masaya Volcano, Nicaragua, 1998–1999. Geophys Res Lett 26:3497–3500 Isaaks EH, Srivastava RM (1989) An introduction to applied geostatistics. Oxford University Press, New York Lewicki JL, Connor C, St-Amand K, Stix J, Spinner W (2003a) Self- potential, soil CO2 flux, and temperature on Masaya volcano, Nicaragua. Geophys Res Lett 30:1817 Lewicki JL, Evans WC, Hilley GE, Sorey ML, Rogie JD, Brantley SL (2003b) Shallow soil CO2 flow along the San Andreas and Calaveras faults, CA. J Geophys Res 108:2187 Pérez N, Salazar J, Saballos A, Álvarez J, Segura F, Hernández P, Notsu K (2000) Diffuse degassing of CO2 from Masaya caldera, Central America. 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Masters thesis, Université de Montréal Stoiber RE, Williams SN, Huebert BJ (1986) Sulfur and halogen gases at Masaya caldera complex, Nicaragua: total flux and variations with time. J Geophys Res 91:12215–12231 Wardell LJ, Delmelle P, Fischer T, Lewicki JL, Malavassi E, Stix J, Strauch W (2003) Volcanic gas workshop fosters international focus on state of the art measurement techniques. Eos (Transactions, American Geophysical Union) 84(47):519 Watson DF (1992) Contouring: a guide to the display and analysis of spatial data. Pergamon, New York Welles JM, Demetriades-Shah TH, McDermitt DK (2001) Considerations for measuring ground CO2 effluxes with chambers. Chem Geol 177:3–13 Werner CA, Brantley SL, Boomer K (2000) CO2 emissions related to the Yellowstone volcanic system 2: statistical sampling, total degassing, and transport mechanisms. J Geophys Res 105:10831–10846 | en |
dc.description.fulltext | partially_open | en |
dc.contributor.author | Lewicki, J. L. | en |
dc.contributor.author | Bergfeld, D. | en |
dc.contributor.author | Cardellini, C. | en |
dc.contributor.author | Chiodini, G. | en |
dc.contributor.author | Granieri, D. | en |
dc.contributor.author | Varley, N. | en |
dc.contributor.author | Werner, C. | en |
dc.contributor.department | Lawrence Berkeley National Laboratory,Earth Sciences Division | en |
dc.contributor.department | U.S. Geological Survey | en |
dc.contributor.department | Università di Perugia, Dipartimento di Scienze della Terra | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.department | Institute of Geological and Nuclear Sciences, New Zealand | 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 | Lawrence Berkeley National Laboratory,Earth Sciences Division | - |
crisitem.author.dept | US Geological Survey, Menlo Park, CA, USA | - |
crisitem.author.dept | Dipartimento di fisica e Geologia di Perugia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | - |
crisitem.author.orcid | 0000-0002-0628-8055 | - |
crisitem.author.orcid | 0000-0003-2831-723X | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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