Search Results - "FISCHER, T. P."

Insights on Hydrothermal‐Magmatic Interactions and Eruptive Processes at Poás Volcano (Costa Rica) From High‐Frequency Gas Monitoring and Drone Measurements by Moor, J. M., Stix, J., Avard, G., Muller, C., Corrales, E., Diaz, J. A., Alan, A., Brenes, J., Pacheco, J., Aiuppa, A., Fischer, T. P.

“…Identification of unambiguous signals of volcanic unrest is crucial in hazard assessment. Processes leading to phreatic and phreatomagmatic eruptions remain…”
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Underestimated Passive Volcanic Sulfur Degassing Implies Overestimated Anthropogenic Aerosol Forcing by Jongebloed, U. A., Schauer, A. J., Cole‐Dai, J., Larrick, C. G., Wood, R., Fischer, T. P., Carn, S. A., Salimi, S., Edouard, S. R., Zhai, S., Geng, L., Alexander, B.

“…The Arctic is warming at almost four times the global rate. An estimated sixty percent of greenhouse‐gas‐induced…”
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Upper-mantle volatile chemistry at Oldoinyo Lengai volcano and the origin of carbonatites by Fischer, T. P, Burnard, P, Marty, B, Hilton, D. R, Füri, E, Sharp, Z. D, Mangasini, F, Palhol, F

“…Carbonatite lavas are highly unusual in that they contain almost no SiO2 and are >50 per cent carbonate minerals. Although carbonatite magmatism has occurred…”
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Chlorine isotope homogeneity of the mantle, crust and carbonaceous chondrites by Sharp, Z. D, Barnes, J. D, Brearley, A. J, Chaussidon, M, Fischer, T. P, Kamenetsky, V. S

“…Chlorine in the Earth is highly depleted relative to carbonaceous chondrites and solar abundances. Knowledge of the Cl concentrations and distribution on Earth…”
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Helium isotopes at Rungwe Volcanic Province, Tanzania, and the origin of East African Plateaux by Hilton, D. R., Halldórsson, S. A., Barry, P. H., Fischer, T. P., de Moor, J. M., Ramirez, C. J., Mangasini, F., Scarsi, P.

“…We report helium isotope ratios (3He/4He) of lavas and tephra of the Rungwe Volcanic Province (RVP) in southern Tanzania. Values as high as 15RA (RA = air…”
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Sulfur degassing at Erta Ale (Ethiopia) and Masaya (Nicaragua) volcanoes: Implications for degassing processes and oxygen fugacities of basaltic systems by J. M. deMoor, T. P. Fischer, Z. D. Sharp, P. L. King, M. Wilke, R. E. Botcharnikov, E. Cottrell, M. Zelenski, B. Marty, K. Klimm, C. Rivard, D. Ayalew, C. Ramirez, K. A. Kelley

“…We investigate the relationship between sulfur and oxygen fugacity at Erta Ale and Masaya volcanoes. Oxygen fugacity was assessed utilizing Fe3+/∑Fe and major…”
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Hydrothermal 15N15N abundances constrain the origins of mantle nitrogen by Labidi, J., Barry, P. H., Bekaert, D. V., Broadley, M. W., Marty, B., Giunta, T., Warr, O., Sherwood Lollar, B., Fischer, T. P., Avice, G., Caracausi, A., Ballentine, C. J., Halldórsson, S. A., Stefánsson, A., Kurz, M. D., Kohl, I. E., Young, E. D.

“…Nitrogen is the main constituent of the Earth’s atmosphere, but its provenance in the Earth’s mantle remains uncertain. The relative contribution of primordial…”
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Geochemistry of the magmatic-hydrothermal system of Kawah Ijen volcano, East Java, Indonesia by DELMELLE, P, BERNARD, A, KUSAKABE, M, FISCHER, T. P, TAKANO, B

“…Samples from Kawah Ijen crater lake, spring and fumarole discharges were collected between 1990 and 1996 for chemical and isotopic analysis. An extremely low…”
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Short-period volcanic gas precursors to phreatic eruptions: Insights from Poás Volcano, Costa Rica by de Moor, J.M., Aiuppa, A., Pacheco, J., Avard, G., Kern, C., Liuzzo, M., Martínez, M., Giudice, G., Fischer, T.P.

“…Volcanic eruptions involving interaction with water are amongst the most violent and unpredictable geologic phenomena on Earth. Phreatic eruptions are…”
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WITHDRAWN: Temporal variations in fumarole gas chemistry at Poás volcano, Costa Rica by FISCHER, T. P, RAMIREZ, C, SHAW, A. M, MORA-AMADOR, R. A, HILTON, D. R, BAMES, J. D, SHARP, Z. D, LE BRUN, M, DE MOOR, J. M, BARRY, P. H, FÜRI, E

“…This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier…”
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Volatile abundances in the sub-arc mantle: insights from volcanic and hydrothermal gas discharges by Fischer, Tobias P., Marty, Bernard

“…Volatile emissions from arc-related volcanic and hydrothermal systems are characterized by elevated CO 2/He, N 2/He and N 2/Ar ratios compared to MORB. The…”
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Plume velocity determination for volcanic SO2 flux measurements by McGonigle, A. J. S., Hilton, D. R., Fischer, T. P., Oppenheimer, C.

“…Ground based volcanic SO2 fluxes provide important insights into the behaviour of volcanoes, and their impacts upon the atmosphere. In order to compute a flux,…”
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Variable SO2 emission rates for Anatahan volcano, the Commonwealth of the Northern Mariana Islands: Implications for deriving arc-wide volatile fluxes from erupting volcanoes by Hilton, D. R., Fischer, T. P., McGonigle, A. J. S., de Moor, J. M.

“…We report new spectroscopic‐derived SO2 emission rates for Anatahan volcano, Mariana Islands. Measurements of SO2 fluxes reveal large fluctuations over the…”
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An experimental determination of chlorine isotope fractionation in acid systems and applications to volcanic fumaroles by Sharp, Z.D., Barnes, J.D., Fischer, T.P., Halick, M.

“…The δ 37Cl values of volcanic fumarole gases and bubbling springs were measured from the Central American and the Kurile arcs. Low temperature gas samples from…”
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Degassing at Anatahan volcano during the May 2003 eruption : Implications from petrology, ash leachates, and SO2 emissions by DE MOOR, J. M, FISCHER, T. P, HILTON, D. R, HAURI, E, JAFFE, L. A, CAMACHO, J. T

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Tracer applications of noble gas radionuclides in the geosciences by Lu, Z.-T., Schlosser, P., Smethie, W.M., Sturchio, N.C., Fischer, T.P., Kennedy, B.M., Purtschert, R., Severinghaus, J.P., Solomon, D.K., Tanhua, T., Yokochi, R.

“…Noble gas radionuclides, including 81Kr (t1/2=229,000years), 85Kr (t1/2=10.8years), and 39Ar (t1/2=269years), possess nearly ideal chemical and physical…”
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Temporal variations in fumarole gas chemistry at Poás volcano, Costa Rica by Fischer, T.P., Ramírez, C., Mora-Amador, R.A., Hilton, D.R., Barnes, J.D., Sharp, Z.D., Le Brun, M., de Moor, J.M., Barry, P.H., Füri, E., Shaw, A.M.

“…We report the chemical and isotopic composition of fumarole gas discharges collected at Poás Volcano, Costa Rica from 2001 to 2014, covering a period during…”
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Aerial strategies advance volcanic gas measurements at inaccessible, strongly degassing volcanoes by Liu, E J, Aiuppa, A, Alan, A, Arellano, S, Bitetto, M, Bobrowski, N, Carn, S, Clarke, R, Corrales, E, de Moor, J M, Diaz, J A, Edmonds, M, Fischer, T P, Freer, J, Fricke, G M, Galle, B, Gerdes, G, Giudice, G, Gutmann, A, Hayer, C, Itikarai, I, Jones, J, Mason, E, McCormick Kilbride, B T, Mulina, K, Nowicki, S, Rahilly, K, Richardson, T, Rüdiger, J, Schipper, C I, Watson, I M, Wood, K

“…Volcanic emissions are a critical pathway in Earth's carbon cycle. Here, we show that aerial measurements of volcanic gases using unoccupied aerial systems…”
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Author Correction: Forearc carbon sink reduces long-term volatile recycling into the mantle by Barry, P. H., de Moor, J. M., Giovannelli, D., Schrenk, M., Hummer, D. R., Lopez, T., Pratt, C. A., Segura, Y. Alpízar, Battaglia, A., Beaudry, P., Bini, G., Cascante, M., d’Errico, G., di Carlo, M., Fattorini, D., Fullerton, K., Gazel, E., González, G., Halldórsson, S. A., Ilanko, T., Iacovino, K., Kulongoski, J. T., Manini, E., Martínez, M., Miller, H., Nakagawa, M., Ono, S., Patwardhan, S., Ramírez, C. J., Regoli, F., Smedile, F., Turner, S., Vetriani, C., Yücel, M., Ballentine, C. J., Fischer, T. P., Hilton, D. R., Lloyd, K. G.

“…An Amendment to this paper has been published and can be accessed via a link at the top of the paper…”
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Apparent decoupling of the He and Ne isotope systematics of the Icelandic mantle: The role of He depletion, melt mixing, degassing fractionation and air interaction by Füri, Evelyn, Hilton, D.R., Halldórsson, S.A., Barry, P.H., Hahm, D., Fischer, T.P., Grönvold, K.

“…We present new He–Ne data for geothermal fluids and He–Ne–Ar data for basalts from throughout the Icelandic neovolcanic zones and older parts of the Icelandic…”
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