Reconstrucción climática al sur de Nueva Zelanda durante los últimos 19.000 años

• Main Author: Salvadó Lluverol, Dídac
• Other Authors: Alonso, Ignacio, Calvo, Eva María, Ministerio de Economía y Competitividad (España)
• Format: Master Thesis
• Language: unknown
• Published: Universidad de Las Palmas de Gran Canaria 2015
• Subjects: Antarctic; Inglés; Las Palmas; New Zealand; The Antarctic; Antarc*
• Online Access: http://hdl.handle.net/10261/211917; https://doi.org/10.13039/501100003329

Trabajo final presentado por Dídac Salvadó Lluverol para el Máster en Oceanografía de la Universidad de Las Palmas de Gran Canaria (ULPGL), realizado bajo la dirección de la Dra. Eva Calvo del Institut de Ciències del Mar (ICM-CSIC) y del Dr. Ignacio Alonso.-- 33 pages, 17 figures, 2 tables, 1 annexe [EN] The main objective of paleooceanogaphy is to study the characteristics of the past ocean and its evolution. In this study, we reconstruct Sea Surface Temperature (SST), marine productivity and continental input by analizing marine sediment core TAN1106-­15, located south of New Zealand. The record covers the last 19.000 yr, covering the last deglaciation and the Holocene. The information has been obtained using a Microwave Assisted Extraction (MAE) technique, which has been previously set up toto ensure that is reliable. This method has allowed to analyze different organic compounds, mainly alkenones and n-­‐alcohols, proxies of SSTand marine productivity and continental input, respectively. During the deglaciation, the SST data show a temperature increase, only interrupted by the Antarctic Cold Reversal (ACR) about 14.500 yr ago, that induced a slight cooling, as it is also shown by the ice volume record δ18O, and the antarctic air temperature record, δD. The climate reached a climatic optimum around 11.000 yr BP, at the beginning of the Holocene. From then onwards, the SST records show a decrease till present values, a trend that agrees well with other data from thissame area. For the terrestrial inputs, the results indicate higher values during the glacial period, likely reflecting the more arid conditions and/or stronger winds that prevailed during that time [ES] Uno de los objetivos de la paleoceanografía es estudiar las características del océano en el pasado y su evolución. De este modo, en este trabajo se reconstruye la temperatura superficial del océano (SST, por sus siglas en inglés), la productividad marina y los aportes de material continental a través del análisis del testigo sedimentario ...