Mathematics – Logic
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3523707z&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 23, CiteID L23707
Mathematics
Logic
2
Oceanography: Biological And Chemical: Geochemistry, Paleoceanography: Corals (4220), Oceanography: Physical: Enso (4922), Oceanography: Biological And Chemical: Stable Isotopes (0454, 1041), Hydrology: Hydrological Cycles And Budgets (1218, 1655)
Scientific paper
We reconstruct the hydrologic history of the tropical western Indian Ocean by calculating the δ 18Oseawater from coupled coral Sr/Ca and δ 18O measurements in a massive Porites coral from Mayotte (Comoros) between 1881 and 1994. We found that the precipitation-evaporation balance varies naturally on time scales of 5-6 years and 18-25 years. High (low) SSTs are associated with positive (negative) δ 18Oseawater implying that atmospheric variability is linked with remote climate modes in the Indian Ocean and the tropical/extratropical Pacific Ocean. Warm El Niño-Southern Oscillation events are associated with a negative freshwater balance at Mayotte. This case study demonstrates that a much denser network of δ 18Oseawater reconstructions is crucial for understanding the spatial patterns of hydrological conditions.
Dullo Wolf-Christian
Kroon Dick
Pfeiffer Markus
Thomassin B. A.
Timm Oliver
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