Late Pleistocene variation in intensity of deep western boundary current from vertical change in size of terrigenous in the Rekohu sediment drift, SW Pacific

Author(s): Khim, B. K.; Lee, Y. J.; Park, Y. H.; Bahk, J. J.
Author Affiliation(s): Primary:
Pusan National University, Division of Earth Environmental System, Busan, South Korea
Other:
KIGAM, South Korea
Volume Title: Ocean and Polar Research
Source: Ocean and Polar Research, 28(4), p.451-457. Publisher: Korea Ocean Research and Development Institute, Seoul, South Korea. ISSN: 1598-141X
Note: In Korean with English summary. 24 refs.; illus., incl. 1 plate, sketch map
Summary: Hole 1124 of ODP Leg 181 was located in the Rekohu sediment drift off eastern New Zealand in the southwest Pacific Ocean. Mean grain sizes of sortable silt were measured in two drilled cores (1124A and 1124B). Chronostratigraphy of core 1124 was correlated with the well-dated nearby core S931, resulting that the age of core 1124 covers the late Pleistocene spanning about MIS (Marine Isotope Stage) 5. Mean grain size of sortable silt seemed to be relatively large during the glacial period, whereas that of the interglacial period was smaller, although several tephra layers contain some coarse-grained pyroclastic particles. The variation in mean grain size of sortable silt in Rekohu sediment drift during the late Pleistocene indicates that the intensity of Deep Western Boundary Current (DWBC) might have been enhanced during the glacial period as a result of increased production of Antarctic Bottom Water (AABW).
Year of Publication: 2006
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Antarctic Bottom Water; Cenozoic; Clastic sediments; Currents; Glacial environment; Intensity; Interglacial environment; Leg 181; Marine environment; Marine transport; ODP Site 1124; Ocean Drilling Program; Ocean currents; Pacific Ocean; Paleo-oceanography; Pleistocene; Quaternary; Rekohu sediment drift; Sediment transport; Sediments; Silt; South Pacific; Southwest Pacific; Terrestrial environment; Upper Pleistocene; Variations; West Pacific
Coordinates: S392954 S392954 W1763154 W1763154
Record ID: 2007070831
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