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TOBIAS P. FISCHER

Ph.D., Arizona State University, 1999. (Associate Professor) (505) 277-0284; fischer@unm.edu

Research and Academic Interests:

Volcanology with emphasis on active volcanism. Geochemistry of fluids discharging from active volcanoes and hydrothermal systems. Flux of volatiles from magmas to the atmosphere during magma ascent and eruption. Element cycling from the mantle and crust to the atmosphere through volcanism. Effects of volcanic plumes on climate. Volatile composition of melts and their influence on eruption style. Field remote sensing, direct sampling and analyses of volcanic and hydrothermal fluids. Current research areas are volcanoes in the Marianas, Japan, Central and South America, the West Indies, and Indonesia.

Listing of Selected Recent Publications:

• Fischer, T. P., Burnard, P, Marty, B, Hilton, D.R, Füri, E, Palhol, F, Sharp, Z.D., Mangasini, F. (2009) Upper-mantle volatile chemistry at Oldoinyo Lengai volcano and the origin of carbonatites. Nature 459, 77-80 May 7, 2009
• Shaw, A.M., Hauri, E., Fischer, T.P., Hilton, D.R., Kelly, K.H. (2008) Hydrogen isotopes in Mariana arc melt inclusions: implications for subduction dehydration and the deep-Earth water cycle. Earth and Planet. Sci. Let. 275, 138-145
• Zellmer, G.F., Fischer, T.P., Chen, C-H. (2008) Evolution, transfer and release of magmas and volcanic gases: an introduction. J. Volcanol. Geotherm. Res. 178 v-vii
• Barnes, J. D., Sharp, Z.D., Fischer, T.P. (2008) Chlorine isotope variations across the Izu-Bonin-Mariana arc. Geology 36, 883­886
• Fischer, T.P. (2008) Volatile fluxes (H2O, CO2, N2, HCl, HF) from arc volcanoes. Geochemical J., 42, 21-38.
• Hilton, D.R., Fischer, T.P. McGonigle, A., de Moor, J.M. (2007) Variable SO2 emission rates for Anatahan volcano, the Commonwealth of the Northern Mariana Islands: Implications for deriving arc-wide volatile fluxes from erupting volcanoes Geophysical Res. Lett. 34 , doi:10.1029/2007GL030405.
• Sharp, Z.D., Barnes, J.D., Brearley, A., Fischer, T.P., and Chaussidon, M.K., V.S., (2007) Chlorine isotope homogeneity of the mantle, crust and carbonaceous chondrites. Nature. 446, 1062-1065.
• Elkins L.*, Fischer T. P., Hilton D. R., Sharp Z. D., McKnight S., and Walker J. A. (2006) Tracing nitrogen in volcanic and geothermal volatiles from the Nicaraguan volcanic front. Geochim. Cosmochim. Acta. 70, 5215-5235.
• de Moor, J. M. *, Fischer, T.P., Hilton, D.R., Hauri, E., Jaffe, L. A., Camacho, J.T. (2005) Degassing at Anatahan volcano during the May 2003 eruption: Implications from petrology, ash leachates, and SO2 emissions. J. Volcanology and Geothermal Research 146, 117-138
• Fischer, T.P., Takahata, N., Sano, Y., Sumino, H., Hilton, D.R. (2005) Nitrogen isotopes of the mantle: insights from mineral separates (Editors’ choice as journal highlight). Geophys Res. Lett. 32, L11305, doi10.1029/2005GRL022792
• McGonigle, A., Hilton, D.R., Fischer, T.P., Oppenheimer, C. (2005) Plume velocity determination for volcanic SO2 flux measurements. Geophys Res. Lett. 32, L11302, doi10.1029/2005GRL022470
• Clor, L. E.*, Fischer, T.P., Hilton, D.R., Sharp, Z.D., and Hartono, U. (2005), Volatile and N isotope chemistry of the Molucca Sea collision zone: Tracing source components along the Sangihe Arc, Indonesia, Geochem. Geophys. Geosyst., 6, Q03J14
• Fischer, T.P. and Marty, B. (2005) Volatiles in the sub-arc mantle: insights from volcanic and hydrothermal gas emissions. J. Volcanology and Geothermal Research, State of the Arc (SOTA) special issue140, 205-216
• Fischer, T.P., Hilton, D.R., Zimmer, M.M., Shaw, A.M., Sharp. Z.D., Walker, J.A. (2002) Subduction and Recycling of Nitrogen along the Central American Margin. Science 297, 1154-1157
• Hilton D. R., Fischer T. P., and Marty B. (2002) Noble gases in subduction zones and volatile recycling. In MSA Special Volume: Noble Gases. Mineralogical Society of America. Vol 47 319-370.
• Taran, Y.A., Fischer, T.P., Cienfuegos, E. Morales, P. (2002) Geochemistry of hydrothermal fluids from an intraplate ocean island: Everman volcano on Socorro Island, Mexico, Chemical Geology, 188, 51-63
• Giggenbach W. F., Tedesco D., Sulisiyo Y., Caprai A., Cioni R., Favara R., Fischer T. P., Hirabayashi J., Korzhinsky M., Martini M., Menyailov I., and Shinohara H. (2001) Evaluation of results from Forth and Fifth IAVCEI Field Workshop on Volcanic Gases, Vulcano Island, Italy and Java, Indonesia. J. Volc. Geotherm. Res. 108, 283-302
• Sano Y., Takahata N., Nishio, Y., Fischer T., Williams, S.N. (2001). Volcanic flux of nitrogen from the earth. Chemical Geology. 171, 263-271

A spot on the Internet:
My research in the news: Oldoinyo Lengai Gases My research on active volcanoes ADVANCED VOLCANOLOGY EPS 575 Volcanology Program at UNM

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