First evidence of denitrification vis-à-vis monsoon in the Arabian Sea since Late Miocene

Autor: G. P. Gurumurthy, H. Lu, James A Bendle, Boo-Keun Khim, A. Ganesh Kumar, Anil Kumar, Rajeev Saraswat, Giancarlo Scardia, Sophia Aharonovich, Stephan Steinke, H. Liddy, Elizabeth M. Griffith, Girish Kumar Sharma, Mitchell W Lyle, Jongmin Lee, Rakesh Saxena, Z. Xu, Manish Tiwari, Arun Deo Singh, Sergio Andò, Lisa Tauxe, Denise K. Kulhanek, Masao Iwai, Kenta Suzuki, Claire M. Routledge, Ravi Mishra, Peter D. Clift, T. Radhakrishna, Zhaojie Yu, Dhananjai Pandey, Annette Hahn, Shubham Tripathi
Přispěvatelé: Tripathi, S, Tiwari, M, Lee, J, Khim, B, Pandey, D, Clift, P, Kulhanek, D, Andò, S, Bendle, J, Aharonovich, S, Griffith, E, Gurumurthy, G, Hahn, A, Iwai, M, Kumar, A, Ganesh Kumar, A, Liddy, H, Lu, H, Lyle, M, Mishra, R, Radhakrishna, T, Routledge, C, Saraswat, R, Saxena, R, Scardia, G, Sharma, G, Singh, A, Steinke, S, Suzuki, K, Tauxe, L, Xu, Z, Yu, Z, National Centre for Antarctic and Ocean Research, Pusan National University, Louisiana State University, Texas A&M University, University of Milano Bicocca, University of Birmingham, Macquarie University Level 2, University of Texas at Arlington, Manipal University, University of Bremen, Kochi University, Wadia Institute of Himalayan Geology, National Institute of Ocean Technology, University of Southern California, Nanjing University, Oregon State University, National Centre for Earth Science Studies, University College London, National Institute of Oceanography, ONGC 11 High, Universidade Estadual Paulista (UNESP), Kumaun University, Banaras Hindu University, Xiamen University, Hokkaido University, Scripps Institution of Oceanography, Chinese Academy of Sciences, Université de Paris-Sud (Orsay)
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: SCIENTIFIC REPORTS(7)
Scientific Reports
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 2045-2322
DOI: 10.1038/srep43056
Popis: Made available in DSpace on 2022-04-28T19:05:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-02-21 In the Arabian Sea, South Asian monsoon (SAM)-induced high surface water productivity coupled with poor ventilation of intermediate water results in strong denitrification within the oxygen minimum zone (OMZ). Despite the significance of denitrification in the Arabian Sea, we have no long-term record of its evolution spanning the past several million years. Here, we present the first record of denitrification evolution since Late Miocene (∼10.2 Ma) in the Eastern Arabian Sea, where the SAM generates moderate surface water productivity, based on the samples retrieved during the International Ocean Discovery Program (IODP) Expedition 355. We find that (i) the SAM was persistently weaker from ∼10.2 to 3.1 Ma; it did not intensify at ∼8 Ma in contrast to a few previous studies, (ii) on tectonic timescale, both the SAM and the East Asian Monsoon (EAM) varied synchronously, (iii) the first evidence of denitrification and productivity/SAM intensification was at ∼3.2-2.8 Ma that coincided with Mid-Pliocene Warm Period (MPWP), and (iv) the modern strength of the OMZ where denitrification is a permanent feature was attained at ∼1.0 Ma. National Centre for Antarctic and Ocean Research Department of Oceanography Pusan National University Department of Geology and Geophysics Louisiana State University, E253 Howe-Russell-Kniffen, Geoscience Complex International Ocean Discovery Program Texas A&M University, 1000 Discovery Drive College Department of Earth and Environmental Sciences University of Milano Bicocca, Piazza della Scienza 4 School of Geography Earth and Environmental Sciences University of Birmingham, Edgbaston Department of Earth and Planetary Sciences Faculty of Science and Engineering Macquarie University Level 2, The Australian Hearing Hub, 16 University Avenue Department of Earth and Environmental Sciences University of Texas at Arlington, Geosciences Building, 500 Yates Street Manipal Centre for Natural Sciences Manipal University, Dr. T.M.A. Pai Planetarium Building MARUM University of Bremen, Leobener Strasse Center for Advanced Marine Core Research/Natural Science Cluster Kochi University, 2-5-1 Akebono-cho Wadia Institute of Himalayan Geology, 33 GMS Road Marine Biotechnology Department National Institute of Ocean Technology, Velachery-Tambaram Main Road Department of Earth Sciences University of Southern California, 3651 Trousdale Parkway School of Geographical and Oceanographical Sciences Nanjing University, 163 Xianlin Avenue College of Earth Ocean and Atmospheric Sciences Oregon State University, 104 CEOAS Administration Building Geosciences Division National Centre for Earth Science Studies University College London, Gower Street Geological Oceanography Division National Institute of Oceanography ONGC 11 High, Bandra-Sion Link Road Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista, 1515 Avenida 24-A Department of Geology Kumaun University Department of Geology Banaras Hindu University Department of Geological Oceanography College of Ocean and Earth Sciences Xiamen University, Xiping Building, Xiang'an South Road Graduate School of Environmental Science Hokkaido University, N10W5, Kita-ku Scripps Institution of Oceanography, 9500 Gilman Drive Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences, 7 Nanhai Road Laboratoire Géosciences Paris-Sud (GEOPS UMR8148-CNRS) Université de Paris-Sud (Orsay), Bâtiment 504 Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista, 1515 Avenida 24-A
Databáze: OpenAIRE
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