Stable isotope record, organic geochemistry and sea surface temperature estimation of ODP Hole 117-721B (Table 1), supplement to: ten Haven, H Lo; Kroon, Dick (1991): Late Pleistocene sea surface water temperature variations off Oman as revealed by the distribution of long-chain alkenones. In: Prell, WL; Niitsuma, N; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 117, 445-452


Late Pleistocene sea surface water temperatures (SST) offshore Oman were calculated from the UK'37 ratio measured in sediment extracts from ODP holes drilled on the Oman Margin (723B, 728B) and on the Owen Ridge (721B, 731A). The data revealed a complex history of SST variations with a temperature range of 18°/19°C-27°/28°C, which is in accord with the present-day SST range in the western Arabian Sea. We found that, notably, in the glacial periods of isotopic stages 3 and 8 the SST was lower than during the interglacials. The lowest SST values occurred during isotopic stage 3. A mechanism involving a strong influence of cold northeasterly winds during glacial periods, with the southwestern monsoon being less effective at the same time, explains cold SST during glacial periods. However, further research is necessary to approve or disapprove this mechanism, because in the present study not all glacial periods were clearly marked by low SST values.

Related Identifier
Metadata Access
Creator ten Haven, H Lo; Kroon, Dick
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1991
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 503 data points
Discipline Earth System Research
Spatial Coverage (57.608W, 16.471S, 59.864E, 18.052N); Arabian Sea
Temporal Coverage Begin 1987-09-03T23:30:00Z
Temporal Coverage End 1987-10-04T00:45:00Z