Great Barrier Reef coral element/Ca and stable isotope data and U-Th ages from IODP Expedition 325
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2014
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| _version_ | 1867172223434883072 |
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| author | Felis, Thomas McGregor, Helen V Linsley, Braddock K Tudhope, Alexander W Gagan, Michael K Suzuki, Atsushi Inoue, Mayuri Thomas, Alexander L Esat, Tezer M Thompson, William G Tiwari, Manish Potts, Donald C Mudelsee, Manfred Yokoyama, Yusuke Webster, Jody M |
| author_facet | Felis, Thomas McGregor, Helen V Linsley, Braddock K Tudhope, Alexander W Gagan, Michael K Suzuki, Atsushi Inoue, Mayuri Thomas, Alexander L Esat, Tezer M Thompson, William G Tiwari, Manish Potts, Donald C Mudelsee, Manfred Yokoyama, Yusuke Webster, Jody M |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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 d18O 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_833408 |
| institution | PANGAEA |
| language | en |
| publishDate | 2014 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Great Barrier Reef coral element/Ca and stable isotope data and U-Th ages from IODP Expedition 325 Felis, Thomas McGregor, Helen V Linsley, Braddock K Tudhope, Alexander W Gagan, Michael K Suzuki, Atsushi Inoue, Mayuri Thomas, Alexander L Esat, Tezer M Thompson, William G Tiwari, Manish Potts, Donald C Mudelsee, Manfred Yokoyama, Yusuke Webster, Jody M Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP 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 d18O 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. |
| title | Great Barrier Reef coral element/Ca and stable isotope data and U-Th ages from IODP Expedition 325 |
| topic | Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP |
| url | https://doi.org/10.1594/PANGAEA.833408 |