Reconstrucción de las temperaturas superficiales marinas del margen ibérico sudoriental durante el últimi periodo glacial mediante el empleo de cocolitofóridos
- Flores Villarejo, José Abel
- Sierro Sánchez, Francisco Javier
- Colmenero Hidalgo, Elena
- Grimalt Obrador, Joan
ISSN: 0213-683X
Año de publicación: 2005
Número: 38
Páginas: 195-198
Tipo: Artículo
Otras publicaciones en: Geogaceta
Resumen
Detailed quantitative analyses of coccolithophore assemblages have been carried out in three sediment cores recovered from different locations in the Atlantic and Mediterranean sectors of the Iberian Peninsula. Biostratigraphical and oxygen isotope analyses show that these cores provide a high-resolution record of most of the last glacial period. Joint interpretation of the results reveals that higher sea surface temperatures (SST) were recorded in the Atlantic side during that interval. Dansgaard-Oeschger Interstadials are the warmer periods, while during Heinrich Events and Dansgaard-Oeschger Stadials SSTs suffered a substantial decrease, probably due to the appearance of turbid, fresher and colder surface water masses. These quantitative differences in the response of coccolithophore assemblages between the Atlantic and the Mediterranean cores indicate that the Mediterranean Sea shows a more intense response to climatic and oceanographic changes than the Atlantic area.