Naidu, Pothuri Divakar; Malmgren, Bjorn (1995): (Table 1) Age determination of ODP Hole 117-723A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.837323
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Published: 1995 (exact date unknown) • DOI registered: 2014-11-21
Abstract:
We have carried out a high-resolution study of fluctuations in upwelling intensity along the Oman Margin, western Arabian Sea, through the last 19,130 years based on several marine microfossil indices of upwelling. We document a periodicity of 2,200 years in the upwelling indices, which would be governed by the south-west (SW) monsoon with such a periodicity. Our data further demonstrate greater amplitude in the variability of the SW monsoon during the Holocene than during the last glacial period. Our reported 2,200 years periodicity has two implications (1) oceanic circulation changes partly influence monsoon strength at sub-Milankovitch cycles (2) previously documented 2,300 years periodicity in atmospheric 14C might be induced by oceanic circulation changes.
Related to:
Naidu, Pothuri Divakar; Malmgren, Bjorn (1995): A 2,200 years periodicity in the Asian monsoon system. Geophysical Research Letters, 22(17), 2361-2364, https://doi.org/10.1029/95GL02558
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 18.051800 * Longitude: 57.609000
Date/Time Start: 1987-09-15T11:45:00 * Date/Time End: 1987-09-17T04:30:00
Minimum DEPTH, sediment/rock: 0.03 m * Maximum DEPTH, sediment/rock: 7.40 m
Event(s):
117-723A * Latitude: 18.051800 * Longitude: 57.609000 * Date/Time Start: 1987-09-15T11:45:00 * Date/Time End: 1987-09-17T04:30:00 * Elevation: -806.0 m * Penetration: 432.3 m * Recovery: 298.29 m * Location: Arabian Sea * Campaign: Leg117 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 46 cores; 432.3 m cored; 0 m drilled; 69 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Naidu, Pothuri Divakar | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Age, dated | Age dated | ka | Naidu, Pothuri Divakar | Age, 14C AMS | |
| 4 | Age, dated, standard deviation | Age dated std dev | ± | Naidu, Pothuri Divakar | Age, 14C AMS |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
15 data points