Western North Pacific Glacial Benthic Stable Isotope Data ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!! NAME OF DATA SET: Western North Pacific Glacial Benthic Stable Isotope Data LAST UPDATE: 8/2011 (Original receipt by WDC Paleo) CONTRIBUTORS: Matsumoto, K., T. Oba, J. Lynch-Stieglitz, H. Yamamoto IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2011-108 WDC PALEO CONTRIBUTION SERIES CITATION: Matsumoto, K., et al. 2011. Western North Pacific Glacial Benthic Stable Isotope Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2011-108. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Matsumoto, K., T. Oba, J. Lynch-Stieglitz, and H. Yamamoto. 2002. Interior hydrography and circulation of the glacial Pacific Ocean. Quaternary Science Reviews, Vol. 21, Issues 14-15, August 2002, pp. 1693-1704. doi:10.1016/S0277-3791(01)00142-1. ABSTRACT: The deepwater of the Pacific Ocean is a key component of the global climate system on the time scale of late-Pleistocene glaciation and deglaciation. Despite its importance, the deep Pacific during the last glacial maximum has received relatively little attention compared to the deep Atlantic, in part, because the Pacific poorly preserves carbonate sediments on the sea floor. Here, we review the current state of knowledge of the deep hydrography and circulation of the glacial Pacific by examining available nutrient-proxy data, including some new d13C and d18O data measured on benthic foraminifera Planulina wuellerstorfi from the vicinity of Japan. Available benthic d13C and d18O and radiocarbon data from the Pacific support the presence of a deep hydrographic boundary at around 2000m during the Last Glacial Maximum (Paleoceanography 3 (1988) 343; Paleoceanography 7 (1992) 273; Paleoceanography 13(4) (1998) 323). The deep hydrographic divide in the glacial Pacific is similar to what is inferred in the Atlantic (Quaternary Research 18 (1982) 218; Paleoceanography 3 (1988) 317; Paleoceanography 3 (1988) 343; Annual Reviews of Earth Planetary Sciences 20 (1992) 245; Science 259 (1993) 1148), the Indian (Nature 333 (1988) 651; Paleoceanography 13 (1998) 20), and the Southern Ocean (Paleoceanography 11 (1996) 191), suggesting that this is a global phenomenon during the glacial time. The upper water mass has a distinctly enriched d13C compared to the deeper water mass, whose possible origins are discussed. ADDITIONAL REFERENCES: Oba, T. and H. Yasuda. 1992. Paleoenvironmental change of the Kuroshio region since the last glacial age. Quaternary Research, Vol. 31 (5), 329-339 (in Japanese with English abstract) Oba, T., M. Murayama, M. Yamauchi, M. Yamane, S. Oka, and H. Yamamoto. 1999. Oxygen isotopic ratio of foraminiferal tests in marine sediment cores collected during "Mirai" MR97-04 cruise. JAMSTECR 39, 41-45 (in Japanese with English abstract). Wahyudi, C. and M. Minagawa. 1997. Response of benthic foraminifera to organic carbon accumulation rates in the Okinawa Trough. Journal of Oceanography 53, 411-420. GEOGRAPHIC REGION: Pacific Ocean PERIOD OF RECORD: Late Glacial and Holocene FUNDING SOURCES: US National Science Foundation-Monbusho (Japanese Ministry of Education) Young Researcher Summer Exchange Program supported research at Hokkaido University by KM, who appreciates the support of "Hensen" (Geosphere) research group at Hokkaido. DESCRIPTION: Glacial and Holocene benthic Planulina (Cibicidoides) wuellerstorfi foraminiferal stable isotope data (d18O and d13C) from 8 sediment cores raised from the vicinity of Japan, between latitudes 28°N and 36°N and from a range in water depth from 740 to 3320 m. Isotopes values are reported per mil vs VPDB. Site Locations: KH82-4-14: 31.44°N, 129.02°E, 740 m water depth. Oba (1983) BO94-20 PN3PC: 28.06°N, 127.55°E, 1058m water depth. Wahyudi and Minagawa (1997) V20-133: 32.58°N, 140.34°E, 1503m water depth. V28-297: 31.59°N, 140.26°E, 2047m water depth. MR97-4 St.3: 35.59°N, 141.48°E, 2308m water depth. Oba et al. (1999) KT89-18 P4: 32.09°N, 133.54°E, 2700m water depth. Oba and Yasuda (1992) KT92-17 PC14: 32.40°N, 138.27°E, 3252m water depth. Nishina (1995) KT92-17 PC16: 31.55°N, 138.25°E, 3320m water depth. Nishina (1995) DATA: Matsumoto et al. 2002 Benthic Isotope Data Isotopes per mil vs VPDB KT89-18-P4 Planulina wuellerstorfi Depth(cm) d13C d18O #Specimens Laboratory 46 -0.1216 2.3798 2 Hokkaido 284 -0.4551 2.7373 3 Hokkaido 293 -0.40059 3.0839 3 Hokkaido 405 -0.19288 4.492 2 Hokkaido 410 -0.20632 4.542 2 Hokkaido KT92-17-14 Planulina wuellerstorfi Depth (cm) d13C d18O #Specimens Laboratory 4 0.22405 2.8966 2 Hokkaido 14 0.61678 3.0939 3 Hokkaido 18 0.41167 2.8745 3 Hokkaido 23 0.39491 2.6752 3 Hokkaido 30 0.46501 2.9396 4 Hokkaido 45 -0.063377 2.49 2 Hokkaido 188 -0.096077 3.8069 2 Hokkaido 190 0.16744 4.479 3 Hokkaido 200 -0.07728 3.7879 2 Hokkaido 206 -0.031628 4.492 6 Hokkaido 217 -0.40615 3.85 4 Hokkaido V20-133 Planulina wuellerstorfi Depth (cm) d13C d18O #Specimens Laboratory 10 -0.066 2.7161 3 LDEO 20 -0.066 2.7242 2 LDEO 25 -0.091 3.0624 3 LDEO 30 -0.164 3.7115 2 LDEO 35 -0.137 3.6285 1 LDEO 40 -0.168 3.5092 2 LDEO 45 -0.253 3.6804 2 LDEO 50 -0.121 3.6068 2 LDEO 73 -0.577 3.6073 3 LDEO 82 -0.202 3.9588 1 LDEO 105 -0.0858 3.8371 1 LDEO 120 -0.225 3.7084 3 LDEO 133 -0.229 3.9289 1 LDEO 155 -0.226 3.7997 2 LDEO BO94-20-P3 Planulina wuellerstorfi Depth (cm) d13C d18O #Specimens Laboratory 60 0.24 2.41 2 LDEO 87 0.06 2.66 3 LDEO 112 0.29 2.78 2 LDEO 129 0.28 2.94 3 LDEO 152 0.13 3.26 1 LDEO 161 0.16 3.28 1 LDEO 183 0.07 3.26 1 LDEO 188 0.15 3.28 1 LDEO 206 0.17 3.17 1 LDEO 225 0.06 3.19 1 LDEO 262 0.3 3.12 1 LDEO 280 0.17 3.05 1 LDEO 327 0.36 2.96 1 LDEO V28-297 Planulina wuellerstorfi Depth (cm) d13C d18O #Specimens Laboratory 69 -0.138 3.8691 1 LDEO 79 -0.175 3.8755 1 LDEO 89 -0.115 3.9776 1 LDEO 123 0.009 3.5453 2 LDEO 170 -0.039 3.6366 4 LDEO 208 -0.071 3.7561 2 LDEO 218 -0.2 3.6781 2 LDEO 241 -0.044 3.6267 1 LDEO KH82-4-14 Planulina wuellerstorfi Depth (cm) d13C d18O #Specimens Laboratory 152 0.1244 2.0593 3 LDEO 347 0.34 2.68 3 LDEO 557 0.42 2.67 2 LDEO 637 0.17 2.58 3 LDEO 767 0.43 2.46 1 LDEO 827 0.62 2.59 1 LDEO 907 0.43 2.49 3 LDEO KT92-17-16 Planulina wuellerstorfi Depth (cm) d13C d18O #Specimens Laboratory 15 0.52885 2.9467 2 Hokkaido 18 0.49624 2.7103 3 Hokkaido 27 0.10565 2.1014 2 Hokkaido 29 0.052163 1.851 3 Hokkaido 112 -0.070708 4.4159 6 Hokkaido 114 -0.10661 4.2456 11 Hokkaido 120 -0.089079 4.3527 10 Hokkaido 122 -0.031817 4.4659 8 Hokkaido 124 -0.055113 4.0804 3 Hokkaido 129 -0.064618 4.4569 9 Hokkaido 131 -0.064047 3.9021 2 Hokkaido 134 -0.10773 4.2787 3 Hokkaido 139 -0.12984 4.1745 3 Hokkaido 141 -0.004159 4.2476 4 Hokkaido MR97-4 Station3 Planulina wuellerstorfi Depth (cm) d13C d18O #Specimens Laboratory 10 0.13219 2.5491 3 Hokkaido 32 0.073738 2.8255 6 Hokkaido 570 -1.9084 4.4419 2 Hokkaido 593 -1.5259 4.3117 2 Hokkaido 597 -1.8246 3.5746 2 Hokkaido