Temperature reconstruction of sediment cores from the northeastern Arabian Sea ...

• Main Authors: Doose-Rolinski, Heidi, Rogalla, U, Scheeder, Georg, Lückge, Andreas, von Rad, Ulrich
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2001
• Subjects: Box corer Reineck; Kasten corer; SO90; Sonne; Greenland; Greenland ice cores
• Online Access: https://dx.doi.org/10.1594/pangaea.735717; https://doi.pangaea.de/10.1594/PANGAEA.735717

In order to reconstruct the monsoonal variability during the late Holocene we investigated a complete, annually laminated sediment record from the oxygen minimum zone (OMZ) off Pakistan for oxygen isotopes of planktic foraminifera and alkenone-derived sea surface temperatures (SST). Significant SST changes of up to 3°C which cannot be explained by changes in the alkenone-producing coccolithophorid species (inferred from the Gephyrocapsa oceanica / Emiliania huxleyi ratio) suggest that SST changes are driven by changes in the monsoon strength. Our high-(decadal)-resolution data indicate that the late Holocene in the northeastern Arabian Sea was not characterized by a stable uniform climate, as inferred from the Greenland ice cores, but by variations in the dominance of the SW monsoon conditions with significant effects on temperatures. Highest SST fluctuations of up to 3.0°C and 2.5°C were observed for the time interval from 4600 to 3300 years B.P. and during the past 500 years. The significant, short-term ... : Supplement to: Doose-Rolinski, Heidi; Rogalla, U; Scheeder, Georg; Lückge, Andreas; von Rad, Ulrich (2001): High resolution temperature and evaporation changes during the late Holocene in the northeastern Arabian Sea. Paleoceanography, 16(4), 358-367 ...