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College of Arts and Sciences


Faculty and Staff

Robert Thunell

Title: Carolina Distinguished Professor
Senior Associate Dean for Natural Sciences
Department: Earth Ocean and Environment
College of Arts and Sciences
E-mail: thunell@geol.sc.edu
Phone: 803 777-0525
Office: EWS, Room 514
Resources: Curriculum Vitae [pdf]
School of the Earth, Ocean and Environment

Education

  • A.B., 1973 Brown University
  • M.S., 1975, Ph. D., 1978, University of Rhode Island
  • Postdoctoral Fellow, 1978-1979, Woods Hole Oceanographic Institution

Specialization

  • Biogeochemistry & Geochemistry
  • Climate Change
  • Oceanography

Research

Reconstructing paleoceanographic and paleoclimatic conditions using deep sea sediments; measuring the production and flux of sediments in the ocean; calibration of paleoclimate proxies.

Publications

Tems, C., Berelson, W., Thunell, R., Tappa, E., Xiaomei, X., Khider, D., Lund, S., and Gonzalrz-Yajimovich, O., 2016. Sedimentary δ15N reveal decadal frequency fluctuations in the eastern tropical north Pacific oxygen minimum zone during the last 1200 years, Paleoceanography 31, doi:10.1002/2015PA002904.

Raven, M., Sessions, A., Adkins, J., and Thunell, R., 2016. Rapid organic matter sulfurization in sinking particles from the Cariaco Basin water column, Geochimica Cosmochimica Acta 190, 175-190

Gibson, K., Thunell, R., Machain-Castillo, M., Fehrenbacher, J, Spero, H., Wejnert, K, Nava-Fernandez, X., and Tappa, E., 2016. Evaluating controls on planktonic foraminiferal geochemistry in the Eastern Tropical North Pacific, Earth and Planetary Science Letters 452, 90-103.

Osborne, E., Thunell, R., Marshall, B., Holm, J., Tappa, E., Benitez-Nelson, C., Cai, W., and Chen, B., 2016. Calcification of the planktonic foraminifera Globigerina bulloides and carbonate ion concentration: Results from the Santa Barbara Basin, Paleoceanography 31, doi.10.1002/2016PA002933.

Gibson, K., Thunell, R., Tappa, E., Peterson, L., and McConnell, M., 2015. The influence of rapid, millennial-scale climate change on nitrogen isotope dynamics of the Cariaco Basin during Marine Isotope Stage 3, Paleoceanography 30, 253-268, DOI: 10.1002/2014PA002684.

Pinckney, J., Benitez-Nelson, C., Thunell, R., Muller-Karger, F., Lorenzoni, L., Troccoli, L., Varela, R., 2015. Phytoplankton community structure and depth distribution changes in the Cariaco Basin between 1996 and 2010. Deep-Sea Research 101. 27-37.

Marshall, B., Thunell, R., Spero, H., Henehan, M., Lorenzoni, L., and Astor, Y., 2015. Morphometric and stable isotope differentiation of Orbulina universa morphotypes from the Cariaco Basin, Venezuela, Marine Micropaleontology 120, 46-64.

Calvert, S., Piper, D., Thunell, R., and Astor, Y., 2015. Elemental settling and burial fluxes in the Cariaco Basin, Marine Chemistry 177, 607-629

Marshall, B., Thunell, R., Henehan, M., Astor, Y., and Wejnert, K., 2013. Planktonic foraminiferal area density as a proxy for carbonate ion concentration: A calibration study using the Cariaco Basin ocean time series, Paleoceanography 28, 363-376, doi: 10.1002/paleo.20034.

Wejnert, K., Thunell, R., and Astor, Y., 2013. Comparison of species-specific oxygen isotope paleotemperature equations: Sensitivity analysis using planktonic foramifera from the Cariaco Basin, Venezuela, Marine Microplaeontology 101, 76-88.

Scranton, M., Taylor, G., Thunell, R., Benitez-Nelson, C., Muller-Karger, F., Fanning, K., Lorenzoni, L., Montes, E., Varella, R. and Astor, Y., 2014. Interannual to subdecadal variability in the nutrient geochemistry of the Cariaco Basin, Oceanography 27, 148-159

Pichevin, L., Ganeshram, R., Gelbert, W., Thunell, R., and Hinton, R., 2014. Silica burial enhanced by iron limitation in oceanic upwelling regions, Nature Geoscience 7, 541-546.

Deutsch, C., Berelson, W., Thunell, R., and others, 2014. Centennial changes in North Pacific anoxia linked to tropical trade winds, Science 345, 665-668.

Montes, E., Altabet, M., Muller-Karger, F., Scranton, M., Thunell., R., Benitez-Nelson, C., Lorenzoni, L., and Astor, Y., 2013. Biogenic nitrogen gas production at the oxic-anoxic interface in the Cariaco Basin, Vemezuela, Biogeosciences 10, 267-269

Krause, J., Brzezinski, M., Siegel, D., and Thunell, R., 2013. Biogenic silica standing stock and export in the Santa Barbara Channel ecosystem, Journal of Geophysical Research: Oceans 118, 736-749.

Turich, C., Schouten, H., Thunell, R., Varela, R., Astor, Y. and Wakeham, S., 2013. Comparison of TEX86 and temperature proxies in sinking particles in the Cariaco Basin, Deep-Sea Research 78, 115-133.

Montes, E., Thunell, R., Muller-Karger, F., Tappa, E., Lorenzoni, L., Troccoli, L., Astor, Y. and Varela, R., 2013. Sources of δ15N variability in sinking particulate nitrogen in the Cariaco Basin, Venezuela, Deep Sea Research II, 93, 96-107..

Astor, Y., Lorenzoni, L., Thunell, R., Varela, R., Muller-Karger, F., Troccoli, L., Taylor, G., Scranton, M., Tappa, E., and Rueda, D., 2013 Interannual variability in sea surface temperature and fCO2 changes in the Cariaco Basin, Deep Sea Research II, 93, 33-43.

Wurtzel, J., Black, D., Thunell, R., Peterson, L., Tappa, E., and Rahman, S., 2013. Mechanisms of southern Caribbean SST variability over the last two millennia, Geophysical research Letters 40, 1-5, doi:10.1002/2013GL058458.

Marshall, B., Thunell, R., Henehan, M., Astor, Y., and Wejnert, K., 2013. Planktonic foraminiferal area density as a proxy for carbonate ion concentration: A calibration study using the Cariaco Basin ocean time series, Paleoceanography 28, 363-376, doi: 10.1002/paleo.20034.

Wejnert, K., Thunell, R., and Astor, Y., 2013. Comparison of species-specific oxygen isotope paleotemperature equations: Sensitivity analysis using planktonic foramifera from the Cariaco Basin, Venezuela, Marine Microplaeontology 101, 76-88.

Scranton, M., Taylor, G., Thunell, R., Benitez-Nelson, C., Muller-Karger, F., Fanning, K., Lorenzoni, L., Montes, E., Varella, R. and Astor, Y., 2014. Interannual to subdecadal variability in the nutrient geochemistry of the Cariaco Basin, Oceanography 27, 148-159

Montes, E., Muller-Karger, F., Thunell, R. and others, 2012. Vertical fluxes of particulate biogenic material through the euphotic and twilight zones in the Cariaco Basin, Venezuela, Deep Sea Research 67, 73-84

Hertzberg, J., Black, D., Peterson, L., Thunell, R., and Haug, G., 2012. Decadal- to centennial-scale tropical Atlantic climate variability across a Dansgaard-Oeschger cycle, Paleoceanography 27, PA3218, doi:10.1029/2011PA002251.

Ren, H., Sigman, D., Thunell, R and Prokopenko, M., 2012. Nitrogen isotopic composition of planktonic foraminifera from the modern ocean and recent sediments, Limnology and Oceanography 57, 1011-1024.

Cronin, T., Rayburn, J., Guilbault, J., Thunell, R. and Franzi, D., 2012. Stable isotope evidence for glacial lake drainage through the St. Lawrence Estuary, eastern Canada, ~ 13.1-12.9 ka, Quaternary International 260, 55-65.

Pichevin, L., Ganeshram, R., Reynolds, B., Prahl, F., Pedersen, T., Thunell, R., and McClymont, E., 2012. Silicic acid biogeochemistry in the Gulf of California: Insights from sedimentary Si isotopes. Paleoceanography 27, PA2201, doi: 10.1029/2011PA002237..

McClymont, E., R. Ganeshram, L. Pichevin, H. Talbot, B. van Dongen, R. Thunell, A. Haywood, J. Singarayer and P. Valdes, 2012. Sea-surface temperature records of Termination 1 in the Gulf of California: challenges for seasonal and inter-annual analogues of tropical Pacific climate change, Paleoceanpgraphy 27, PA2202, doi:10.1029/2011PA002226.