Faculty Profiles - KITAGAWA, Hiroyuki

Papers - KITAGAWA, Hiroyuki

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Seasonal variations in settling fluxes of major components in the oligotrophic Shikoku Basin, the western North Pacific: coincidence of high biogenic flux with Asian dust supply in spring Reviewed

T. Li, T. Masuzawa and H. Kitagawa

Marine Chemistry Vol. 91 page： 187-210 2004

Flux and characteristics of the alkaline dusts in west Jilin province, China Reviewed

B. Chen, K, Hu, J. Dong-mei and H. Kitagawa

Ecology and Environment Vol. 13 ( 2 ) page： 191-193 2004

Holocene evolution, of the outer lake of Hwajinpo Lagoon on the eastern coast of Korea; environmental changes with Holocene sea-level fluctuation of the East Sea (Sea of Japan)

J. G. Yum, K. M. Yu, K. Takemura, T. Naruse, A. Kitamura, H. Kitagawa and J. C. Kim

Radiocarbon Vol. 46 ( 2 ) page： 797-808 2004

Seasonal and secular variations of atmospheric 14CO2 over the Western Pacific since 1994 Reviewed

H. Kitagawa, H. Mukai, N. Nojiri, Y. Shibata, T. Kobayashi and T. Nojiri

Radiocarbon Vol. 46 ( 2 ) page： 643-648 2004

Language：English Publishing type：Research paper (scientific journal)

Air sample collections over the western Pacific have continued since 1992 as a part of Center for Global Environmental Research, National Institute for Environmental Studies (CGER-NIES) global environmental monitoring program. The air samples collected on the Japan-Australia transect made it possible to trace the seasonal and secular 14CO2 variations, as well as an increasing trend of greenhouse gases over the western Pacific. A subset of CO2 samples from latitudes of 10–15°N and 23–28°S were chosen for accelerator mass spectrometry (AMS) 14C analysis using a NIES-TERRA AMS with a 0.3–0.4% precision. These 14CO2 records in maritime air show seasonal variations superimposed on normal exponential decreasing trends with a time constant of about 16 yr. The Δ14C values in the Northern Hemisphere are lower those in the Southern Hemisphere by 3–4‰ during 1994–2002. The Northern Hemisphere record shows relatively high seasonality (2.3 ± 1.5‰) as compared with the Southern Hemisphere (1.3 ± 1.2‰). The maximum values of seasonal cycles appear in late autumn and early winter in the Northern and Southern Hemispheres, respectively. Oscillations of 1–10 yr over the western Pacific are found to correlate possibly with the El Niño/Southern Oscillation (ENSO) events.

*Asychronous climatic changes in the North Atlantic and Japan during the Last Termination Reviewed

T. Nakagawa, H. Kitagawa, Y. Yasuda, Pavel E. Tarasov, K. Nishida, K. Gotanda, Y. Sawai and Yangtze River Civilization Program Members

Science Vol. 299 page： 688-691 2003

加速器質量分析法 Reviewed

北川浩之

ケミカルエンジニャリング Vol. 48 ( 10 ) page： 14-18 2003

Monsoon changes and eolian dust deposition over the past 30,000 years in Cheju Island, Korea Reviewed

Y. Yatagi, K. Takemura, T. Naruse, H. Kitagawa, H. Fukusawa, M-H. Kim and Y. Yasuda

Transactions, Japanese Geomorphological Union Vol. 23 ( 5 ) page： 821-831 2002

Timing of sea-transgression during the past 2000 years in Akkeshi Low-land, Hokkaido, Northern Japan Reviewed

Y. Sawai and H. Kitagawa

Proc. 15th diatom Symposium page： 225-261 2002

加速器質量分析法 Invited

北川浩之

ぶんせき ( 2003-3 ) page： 128-132 2002

H. Hideshima, E. Matsumoto, O. Abe and H. Kitagawa Reviewed

Marine Reservoir correction of NW Pacific estimated from an annually banded coral of Ishigaki Island, southern Japan

Radiocarbon Vol. 43 ( 2A ) page： 473-476 2001

Coral reef evolution at the leeward side of Ishigaki Island, southwest Japan Reviewed

H. Yamano, O. Abe, H. Kitagawa, E. Niu and T. Nakamura

Radiocarbon Vol. 43 ( 2B ) page： 899-908 2001

The earliest record of major anthropogenic deforestation in the Ghab Valley, northwest Syria: a palynological study Reviewed

Vol. 73/74 page： 127-136 2000

Vegetation and climate history since the last interglacial in Kurota Lowland, western Japan Reviewed

T. Takahara and H. Kitagawa

Palaeogeography, Palaeoclimatology and Paleoecology Vol. 115 page： 123-134 2000

Pollen–derived history of timber exploitation from the Roman period onwards in the Romanche valley, central French Alps Reviewed

T. Nakagawa, de Beaulieu and H. Kitagawa

Vegetation history and Archaeobotany Vol. 9 ( 2 ) page： 85-89 2000

Atmospheric radiocarbon calibration beyond 11,900 cal BP from Lake Suigetsu laminated sediments Reviewed

Vol. 42 ( 3 ) page： 369-380 2000

Pre-bomb marine reservoir ages in the western Pacific: Preliminary results on Kyoto University collection Reviewed

M. Yoneda, H. Kitagawa, J. van der Plicht, M. Uchida, A. Tanaka, Y. Shibata, Morita, M. and T. Ohno

Nucl. Instr. and Meth. in Phys. Res. B Vol. 172 page： 377-381 2000

湖沼堆積物の宇宙線起源同位体分析による宇宙・太陽・地球環境変動の解読 Invited

北川浩之

月刊地球 Vol. 22 ( 3 ) 2000

中国遼寧省新賓市北四平の泥炭層の花粉分析 Reviewed

尹懐寧・安田喜憲・北川浩之・北川淳子・藤木利之・山口健太郎

日本花粉学会誌 Vol. 45 ( 1 ) page： 71-77 1999

宮本真二・安田喜憲・北川浩之・竹村恵二 Reviewed

福井県蛇ヶ上湿原における過去14000年間の環境変遷

日本花粉学会誌 Vol. 45 ( 1 ) page： 7-14 1999

炭素14年代測定の現状と新展開 Invited

北川浩之

月刊地球 ( 26号外 ) page： 43-49 1999

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Papers - KITAGAWA, Hiroyuki