TY - JOUR
T1 - Intensification of the meridional temperature gradient in the Great barrier reef following the last glacial maximum
AU - Felis, Thomas
AU - McGregor, Helen V.
AU - Linsley, Braddock K.
AU - Tudhope, Alexander W.
AU - Gagan, Michael K.
AU - Suzuki, Atsushi
AU - Inoue, Mayuri
AU - Thomas, Alexander L.
AU - Esat, Tezer M.
AU - Thompson, William G.
AU - Tiwari, Manish
AU - Potts, Donald C.
AU - Mudelsee, Manfred
AU - Yokoyama, Yusuke
AU - Webster, Jody M.
N1 - Funding Information:
This research used samples provided by IODP, drilled on a mission-specific platform expedition (Expedition 325—Great Barrier Reef Environmental Changes) conducted by the European Consortium for Ocean Research Drilling (ECORD) Science Operator (ESO). We thank the Great Barrier Reef Marine Park Authority and the Australian Maritime Safety Authority for permissions. Funding was provided by Deutsche Forschungsgemeinschaft (FE 615/4-1), Australian Research Council (Discovery grant DP1094001), Australia and New Zealand IODP Consortium, Australian Institute of Nuclear Science and Engineering, Natural Environmental Research Council (NE/H014136/1, NE/H014268/1), the Cooperative Research Program of the Center for Advanced Marine Core Research (10B039, 11A013, 11B041), Ministry of Earth Sciences, Govt. of India (with partial support from DST & ISRO-GBP) and Japan Society for the Promotion of Science (JSPS NEXT-GR031). We thank M. Kölling, S. Pape, M. Segl, C. Vogt, O. Mund, J. Cowley, L. McMorrow, H. Scott-Gagan, J. Abrantes, J. Gaudry, H. Schofield, T. Okai and T. Ishimura for analytical and technical support; A. Timmermann and P.N. DiNezio for discussion; K. Tachikawa for providing data; Expedition 325 project manager C. Cotterill; the crew and drilling team of the Greatship Maya; and the IODP Bremen Core Repository for support.
PY - 2014/6/17
Y1 - 2014/6/17
N2 - Tropical south-western Pacific temperatures are of vital importance to the Great Barrier Reef (GBR), but the role of sea surface temperatures (SSTs) in the growth of the GBR since the Last Glacial Maximum remains largely unknown. Here we present records of Sr/Ca and δ 18 O for Last Glacial Maximum and deglacial corals that show a considerably steeper meridional SST gradient than the present day in the central GBR. We find a 1-2 °C larger temperature decrease between 17° and 20°S about 20,000 to 13,000 years ago. The result is best explained by the northward expansion of cooler subtropical waters due to a weakening of the South Pacific gyre and East Australian Current. Our findings indicate that the GBR experienced substantial meridional temperature change during the last deglaciation, and serve to explain anomalous deglacial drying of northeastern Australia. Overall, the GBR developed through significant SST change and may be more resilient than previously thought.
AB - Tropical south-western Pacific temperatures are of vital importance to the Great Barrier Reef (GBR), but the role of sea surface temperatures (SSTs) in the growth of the GBR since the Last Glacial Maximum remains largely unknown. Here we present records of Sr/Ca and δ 18 O for Last Glacial Maximum and deglacial corals that show a considerably steeper meridional SST gradient than the present day in the central GBR. We find a 1-2 °C larger temperature decrease between 17° and 20°S about 20,000 to 13,000 years ago. The result is best explained by the northward expansion of cooler subtropical waters due to a weakening of the South Pacific gyre and East Australian Current. Our findings indicate that the GBR experienced substantial meridional temperature change during the last deglaciation, and serve to explain anomalous deglacial drying of northeastern Australia. Overall, the GBR developed through significant SST change and may be more resilient than previously thought.
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U2 - 10.1038/ncomms5102
DO - 10.1038/ncomms5102
M3 - Article
AN - SCOPUS:84902778411
VL - 5
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
M1 - 4102
ER -