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Koizumi, Itaru; Sakamoto, Tatsuhiko (2003): Diatom abundance in sediments of ODP Holes 186-1150A and 186-1151C [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.783073, Supplement to: Koizumi, I; Sakamoto, T (2003): Paleoceanography off Sanriku, northeast Japan, based on diatom flora. In: Suyehiro, K; Sacks, IS; Acton, GD; Oda, M (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 186, 1-21, https://doi.org/10.2973/odp.proc.sr.186.110.2003

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Published: 2003 (exact date unknown) • DOI registered: 2012-06-21

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Abstract:
The diatom flora from two sediment cores recovered from the upper 27 meters below seafloor (mbsf) in the oceanic frontal area off Sanriku, northeast Japan, during Ocean Drilling Program Leg 186 were analyzed. Diatom abundance seems to be in interglacial stages and suggests a south-north shifting of the frontal area. Diatom temperature values are less reliable because frequency of the warm-water species is smaller. Site 1151 was in a warm climate at ~50 ka, as were Deep Sea Drilling Project Sites 579 and 580 in the western North Pacific Ocean. A mixed diatom assemblage in the upper 3 mbsf at Site 1150 is evidence that the Tsugaru Warm Current flowed into the studied area through the Tsugaru Strait.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 38.966120 * Median Longitude: 143.332980 * South-bound Latitude: 38.750330 * West-bound Longitude: 143.331910 * North-bound Latitude: 39.181910 * East-bound Longitude: 143.334050
Date/Time Start: 1999-06-22T18:30:00 * Date/Time End: 1999-08-10T09:45:00
Event(s):
186-1150A * Latitude: 39.181910 * Longitude: 143.331910 * Date/Time Start: 1999-06-22T18:30:00 * Date/Time End: 1999-06-26T22:15:00 * Elevation: -2680.8 m * Penetration: 722.6 m * Recovery: 566.4 m * Location: North Pacific Ocean * Campaign: Leg186 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 76 cores; 722.6 m cored; 0 m drilled; 78.4 % recovery
186-1151C * Latitude: 38.750330 * Longitude: 143.334050 * Date/Time Start: 1999-08-09T17:45:00 * Date/Time End: 1999-08-10T09:45:00 * Elevation: -2174.2 m * Penetration: 97.2 m * Recovery: 101.75 m * Location: North Pacific Ocean * Campaign: Leg186 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 core; 97.2 m cored; 0 m drilled; 104.7 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. Koizumi, I; Sakamoto, T (2003): (Table T1) Diatom abundance in sediments of ODP Hole 186-1150A. https://doi.org/10.1594/PANGAEA.783071
  2. Koizumi, I; Sakamoto, T (2003): (Table T2) Diatom abundance in sediments of ODP Hole 186-1151C. https://doi.org/10.1594/PANGAEA.783072