Hendrizan, Marfasran; Kuhnt, Wolfgang; Holbourn, Ann E; Cahyarini, Sri Yudawati; Ningsih, Nining Sari: Northeastern Kalimantan hydroclimate of Core SO217-18522 over 50 kyrs [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.955041 (dataset in review)
Abstract:
Changes in convective activity and hydroclimate over Northeastern Kalimantan are key features to understand glacial to interglacial climate evolution in the center of the West Pacific Warm Pool during the Late Pleistocene to Holocene. We use high-resolution X-ray fluorescence (XRF)-scanner derived elemental ratios in sediment Core SO217-18522 (1º 24.106' N, 119º 4.701'E, 975 m water depth) recovered from the northern Makassar Strait to reconstruct changes in precipitation-related weathering and erosion over Northeastern Kalimantan over the last 50 kyr. Enhanced seasonality of rainfall and an extended dry season during Heinrich Stadials (HS4 to HS1) and the Younger Dryas (YD) suggest weakening of the tropical convection associated with a southward shift of the tropical rain belt and the annual mean position of the Intertropical Tropical Convection Zone. Increasing sediment discharge and intensification of convective activity occurred during the early to mid-Holocene during an interval of high Northern Hemisphere insolation, elevated atmospheric pCO2 levels and global warming. Our reconstructions in comparison with regional terrestrial and marine records highlight the high spatial variability of Kalimantan hydroclimate on millennial to glacial-interglacial timescales.
Keyword(s):
Coverage:
Latitude: 1.401770 * Longitude: 119.079680
Date/Time Start: 2011-08-01T10:03:00 * Date/Time End: 2011-08-01T10:03:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
3 datasets
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Datasets listed in this bundled publication
- Hendrizan, M; Kuhnt, W; Holbourn, AE et al. (in review): Age determination of sediment core SO217-18522 (GIK18522-3). https://doi.pangaea.de/10.1594/PANGAEA.955034
- Hendrizan, M; Kuhnt, W; Holbourn, AE et al. (in review): Element analysis of sediment core SO217-18522 (GIK18522-3). https://doi.pangaea.de/10.1594/PANGAEA.955040
- Hendrizan, M; Kuhnt, W; Holbourn, AE et al. (in review): Isotope record of Planulian wuellerstorfi of sediment core SO217-18522 (GIK18522-3). https://doi.pangaea.de/10.1594/PANGAEA.955035