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ten Haven, H Lo; Kroon, Dick (1991): Stable isotope record, organic geochemistry and sea surface temperature estimation of ODP Hole 117-721B (Table 1). PANGAEA, https://doi.org/10.1594/PANGAEA.756841, Supplement to: ten Haven, HL; Kroon, D (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, https://doi.org/10.2973/odp.proc.sr.117.159.1991

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Abstract:
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.
Project(s):
Coverage:
Median Latitude: 17.220075 * Median Longitude: 58.750200 * South-bound Latitude: 16.470500 * West-bound Longitude: 57.608100 * North-bound Latitude: 18.051800 * East-bound Longitude: 59.864500
Date/Time Start: 1987-09-03T23:30:00 * Date/Time End: 1987-10-04T00:45:00
Minimum DEPTH, sediment/rock: 0.14 m * Maximum DEPTH, sediment/rock: 22.60 m
Event(s):
117-721B * Latitude: 16.677800 * Longitude: 59.864500 * Date/Time Start: 1987-09-03T23:30:00 * Date/Time End: 1987-09-06T01:45:00 * Elevation: -1948.0 m * Penetration: 424.2 m * Recovery: 342.78 m * Location: Arabian Sea * Campaign: Leg117 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 44 cores; 424.2 m cored; 0 m drilled; 80.8 % recovery
117-723B * Latitude: 18.051800 * Longitude: 57.608100 * Date/Time Start: 1987-09-17T04:30:00 * Date/Time End: 1987-09-19T14:15:00 * Elevation: -817.0 m * Penetration: 429 m * Recovery: 295.84 m * Location: Arabian Sea * Campaign: Leg117 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 44 cores; 400.1 m cored; 0 m drilled; 73.9 % recovery
117-728B * Latitude: 17.680200 * Longitude: 57.825700 * Date/Time Start: 1987-09-27T00:00:00 * Date/Time End: 1987-09-28T04:30:00 * Elevation: -1436.0 m * Penetration: 347.7 m * Recovery: 349.5 m * Location: Arabian Sea * Campaign: Leg117 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 347.7 m cored; 0 m drilled; 100.5 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Sample code/labelSample labelten Haven, H LoODP sample designation
3DEPTH, sediment/rockDepthmGeocode
4Calcium carbonateCaCO3%ten Haven, H LoGas chromatography
5Carbon, organic, totalTOC%ten Haven, H LoGas chromatography
6Alkenone, unsaturation index UK'37UK'37ten Haven, H LoGas chromatography
7Sea surface temperature, annual meanSST (1-12)°Cten Haven, H LoCalculated from C37 alkenones (Prahl & Wakeham, 1987)
8Neogloboquadrina dutertrei, d18ON. dutertrei d18Oper mil PDBten Haven, H LoMass spectrometer Finnigan MAT 251
9Neogloboquadrina dutertrei, d13CN. dutertrei d13Cper mil PDBten Haven, H LoMass spectrometer Finnigan MAT 251
Size:
503 data points

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