Collaborative Research: Evaluating deep-sea ventilation and the global carbon cycle during early Paleogene hyperthermals
MS student: Angela Lewis (2016-current)
Funding: NSF Division of Ocean Sciences, Marine Geology and Geophysics, August 2015 – July 2018
Collaborators:
Arne Winguth, UT Arlington
Ellen Thomas, Yale University, Wesleyan University
Princelli Hull, Yale University
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see news story here
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IODP Expedition 355 Arabian Sea Monsoon
PhD student Samantha Carter (2015-current)
Undergraduate student Cameron Zimny (Summer 2016)
Collaborators:
Peter Clift, Louisiana State University
Denise Kulhanek, IODP
Howie Scher, University of South Carolina
Mitch Lyle, Oregon State University
James Bendle, University of Birmingham
and IODP Expedition 355 Scientists
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I participated in the International Ocean Discovery Program (IODP) Expedition 355 in the Arabian Sea in Spring 2015 as a physical properties specialist on board the scientific drilling platform Joides Resolution. We will be contributing to the scientific objectives by analyzing the radiogenic strontium isotopic signature (87Sr/86Sr) of the clay fraction and pore fluids and reconstruct their variation in time. My proposed participation plan will assist in fulfilling the first two scientific objectives of the expedition to: (1) test whether Greater Himalayan exhumation is correlated with proposed monsoon intensification after 23 Ma, and (2) determine if the monsoon strengthened or weakened at 8 Ma. This will help “to better understand the co-evolution of mountain building, weathering and erosion, and climate across multiple time scales” (taken from the Summary of Arabian Sea Monsoon Expedition).
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You can follow my adventure “unofficially” via my blog
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Publications:
Carter*, S. C., E. M. Griffith, H. D. Scher and IODP Expedition 355 Scientists (submitted, August, 2016) Data Report: 87Sr/86Sr in pore fluids from the Arabian Sea Monsoon IODP Expedition 355.
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Pandey, D.K, Clift, P.D., Kulhanek, D.K, Andò, S., Bendle, J.A.P., Bratenkov, S., Griffith, E.M., Gurumurthy, G.P., Hahn, A., Iwai, M., Khim, B.-K., Kumar, A., Kumar, A.G., Liddy, H.M., Lu, H., Lyle, M.W., Mishra, R., Radhakrishna, T., Routledge, C.M., Saraswat, R., Saxena, R., Scardia, G., Sharma, G.K., Singh, A.D., Steinke, S., Suzuki, K., Tauxe, L., Tiwari, M., Xu, Z., and Yu, Z., 2016. Expedition 355 summary. In Pandey, D.K., Clift, P.D., Kulhanek, D.K., and the Expedition 355 Scientists, Arabian Sea Monsoon. Proceedings of the International Ocean Discovery Program, 355: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/​10.14379/​iodp.proc.355.101.2016
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Pandey, D.K., Clift, P.D., Kulhanek, D.K., Andò, S., Bendle, J.A.P., Bratenkov, S., Griffith, E.M., Gurumurthy, G.P., Hahn, A., Iwai, M., Khim, B.-K., Kumar, A., Kumar, A.G., Liddy, H.M., Lu, H., Lyle, M.W., Mishra, R., Radhakrishna, T., Routledge, C.M., Saraswat, R., Saxena, R., Scardia, G., Sharma, G.K., Singh, A.D., Steinke, S., Suzuki, K., Tauxe, L., Tiwari, M., Xu, Z., and Yu, Z., 2016. Expedition 355 methods. In Pandey, D.K., Clift, P.D., Kulhanek, D.K., and the Expedition 355 Scientists, Arabian Sea Monsoon. Proceedings of the International Ocean Discovery Program, 355: College Station, TX (International Ocean Discovery Program) http://dx.doi.org/​10.14379/​iodp.proc.355.102.2016
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Pandey, D.K., Clift, P.D., Kulhanek, D.K., Andò, S., Bendle, J.A.P., Bratenkov, S., Griffith, E.M., Gurumurthy, G.P., Hahn, A., Iwai, M., Khim, B.-K., Kumar, A., Kumar, A.G., Liddy, H.M., Lu, H., Lyle, M.W., Mishra, R., Radhakrishna, T., Routledge, C.M., Saraswat, R., Saxena, R., Scardia, G., Sharma, G.K., Singh, A.D., Steinke, S., Suzuki, K., Tauxe, L., Tiwari, M., Xu, Z., and Yu, Z., 2016. Site U1456. In Pandey, D.K., Clift, P.D., Kulhanek, D.K., and the Expedition 355 Scientists, Arabian Sea Monsoon. Proceedings of the International Ocean Discovery Program, 355: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/​10.14379/​iodp.proc.355.103.2016
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Pandey, D.K., Clift, P.D., Kulhanek, D.K., Andò, S., Bendle, J.A.P., Bratenkov, S., Griffith, E.M., Gurumurthy, G.P., Hahn, A., Iwai, M., Khim, B.-K., Kumar, A., Kumar, A.G., Liddy, H.M., Lu, H., Lyle, M.W., Mishra, R., Radhakrishna, T., Routledge, C.M., Saraswat, R., Saxena, R., Scardia, G., Sharma, G.K., Singh, A.D., Steinke, S., Suzuki, K., Tauxe, L., Tiwari, M., Xu, Z., and Yu, Z., 2016. Site U1457. In Pandey, D.K., Clift, P.D., Kulhanek, D.K., and the Expedition 355 Scientists, Arabian Sea Monsoon. Proceedings of the International Ocean Discovery Program, 355: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/​10.14379/​iodp.proc.355.104.2016
Equatorial Pacific export production and carbonate accumulation over the Middle Miocene
MS student Samantha Carter (2013 – 2015)
Undergraduate student Angela Lewis (Summer 2014 – Fall 2014)
Collaborator: Don Penman, Yale University
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The Middle Miocene Climate Transition (MMCT) at ~13.8 million years ago (Ma) marks the point when Earth made its final transition to the icehouse conditions of the Pleistocene. A high resolution (<5 kyr) record of export production reconstructed using marine barite accumulation rates and carbonate accumulation in the eastern equatorial Pacific at IODP Site U1337 was produced spanning the MMCT from 14.1-13.5 Ma. The record shows that organic carbon export was high with an extended period of more than double present-day values. If these changes are representative of the entire region, then enough carbon could be sequestered to have an effect on atmospheric carbon dioxide concentrations. However, organisms making this organic carbon would require an increased nutrient supply to the surface waters, which might be accomplished by changes in ocean circulation.
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Publications:
Carter, S. (2015) Equatorial Pacific export production and carbonate accumulation over the Middle Miocene, The University of Texas at Arlington, M.Sc. Thesis.
Carter*, S. C., E. M. Griffith, and D. Penman (2016) Peak intervals in equatorial Pacific export production during the Middle Miocene Climate Transition. Geology. pdf