The reconstruction of past climate variability in the NW Indian Ocean based on a coral proxy record from the Maldives [Elektronische Ressource] / von David Storz

The reconstruction of past climate variability in the NW Indian Ocean based on a coral proxy record from the Maldives (109 Seiten, 44 Abbildungen, 8 Tabellen) Dissertation zur Erlangung des Doktorgrades der Naturwissenschaften vorgelegt beim Fachbereich Geowissenschaften Goethe-Universität in Frankfurt am Main von David Storz aus Filderstadt Frankfurt am Main, 2010 (D30) vom Fachbereich 11 der Goethe-Universität Frankfurt am Main als Dissertation angenommen. Dekan: Prof. Dr. Robert Pütz Gutachter: Prof. Dr. Eberhard Gischler Prof. Dr. Wolfgang Oschmann Datum der Disputation: Abstract Until now, the NW Indian Ocean was sparsely covered with coral proxy records, and records from the Maldives Archipelago do not exist. The first such coral proxy record from the central Maldives is presented in this study. It originates from a massive Porites lutea (Quoy and Gaimard, 1833) colony that was sampled March 2007 in the lagoon of Rasdhoo Atoll (4°N/ 73°W), which is located in the central Maldives. The record spans a period of 90 yrs and reaches back to 1917 AD with monthly to bimonthly resolution. This study investigates temporal variations of the 18 13skeletal stable oxygen (δ O) and carbon (δ C) isotopes, the strontium-to-calcium (Sr/Ca), and the annual extension-rates, and their relationship to historical climate variations 1917-2007.