Faculty Profiles - NAKATSUKA, Takeshi

Papers - NAKATSUKA, Takeshi

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A 1179-yr (417-1595 CE) tree-ring oxygen isotope chronology for northern Japan validated using the 774-775 CE radiocarbon spike Reviewed

Sano, M; Li, Z; Tsushima, A; Kimura, K; Nakamura, T; Ohyama, M; Sakamoto, M; Nakatsuka, T; Hakozaki, M

RADIOCARBON 2024.5

Summer climate information recorded in tree-ring oxygen isotope chronologies from seven locations in the Republic of Korea Reviewed International coauthorship Open Access

Choi, EB; Park, JH; Sano, M; Nakatsuka, T; Seo, JW

FRONTIERS IN FORESTS AND GLOBAL CHANGE Vol. 7 2024.4

Toward International Collaborations of Interdisciplinary Studies and Citizen Sciences Invited Reviewed

Nkakatsuka Takeshi

Journal of Japanese Scientists Vol. 59 ( 5 ) page： 32 - 37 2024

Intra-annual oxygen isotopic variations of Pterocarya rhoifolia collected at Ashiu Research Forest, Kyoto

YUMIKO WATANABE, Kitou Katayama, Li Zhen, Takeshi Nakatsuka

Abstracts of Annual Meeting of the Geochemical Society of Japan Vol. 71 ( 0 ) page： 121 2024

Intra-Annual Isotope Records from Japanese Cedar Tree Samples in Akita Prefecture

Minghao Luo, YUMIKO WATANABE, Li Zhen, Takeshi Nakatsuka

Abstracts of Annual Meeting of the Geochemical Society of Japan Vol. 71 ( 0 ) page： 120 2024

Language：Japanese Publisher：GEOCHEMICAL SOCIETY OF JAPAN

<p>Tree-ring width, density, and isotopic data can be used for paleoclimate reconstruction. Recently, due to the advantage of being less affected by tree physiological factors, the use of tree-ring cellulose isotope ratios in paleoclimate reconstruction has become a new research focus. Specifically, intra-annual isotope ratios have shown high-resolution potential for paleoclimate reconstruction, with feasibility demonstrated in multiple studies in central Japan. However, such high-resolution paleoclimate reconstruction studies in the relatively high-latitude region of northern Japan are still relatively scarce. Therefore, in this study, we collected tree-ring samples from northern Japan to explore whether the same reconstruction methods are applicable to this colder climate region.</p>

DOI： 10.14862/geochemproc.71.0_120

CiNii Research

RADIOCARBON DATING OF TREE RINGS FROM THE BEGINNING AND END OF THE YAYOI PERIOD, JAPAN Reviewed

Sakamoto Minoru, Hakozaki Masataka, Nakatsuka Takeshi, Ozaki Hiromasa

RADIOCARBON 2023.8

Assessments of tree-ring intra-annual & delta;O-18 record for reconstructing hydroclimate with high temporal resolution Reviewed

Watanabe Yumiko, Katayama Yoshito, Li Zhen, Nakatsuka Takeshi, Tazuru Suyako

GEOSCIENCE LETTERS Vol. 10 ( 1 ) 2023.6

Temporal changes of stable sulfur isotope ratios in tree rings of two giant Cryptomeria japonica

Shiode Ayumi, Tanikawa toko, Hirano Yasuhiro, Nakatsuka Takeshi, Kato Yoshikazu, Ishida Takuya, Sase Hiroyuki

The Japanese Forest Society Congress Vol. 134 ( 0 ) page： 503 2023.5

A WIGGLE-MATCHED 297-YR TREE-RING OXYGEN ISOTOPE RECORD FROM THAILAND: INVESTIGATING THE C-14 OFFSET INDUCED BY AIR MASS TRANSPORT FROM THE INDIAN OCEAN Reviewed International coauthorship

Sano Masaki, Pumijumnong Nathsuda, Fujita Koji, Hakozaki Masataka, Miyake Fusa, Nakatsuka Takeshi

RADIOCARBON Vol. 65 ( 2 ) page： 505 - 519 2023.4

Asian-Australian summer monsoons linkage to ENSO strengthened by global warming Reviewed International coauthorship

Xu Chenxi, Wang S. -Y. Simon, Borhara Krishna, Buckley Brendan, Tan Ning, Zhao Yaru, An Wenling, Sano Masaki, Nakatsuka Takeshi, Guo Zhengtang

NPJ CLIMATE AND ATMOSPHERIC SCIENCE Vol. 6 ( 1 ) 2023.2

The modulation of Pacific Decadal Oscillation on ENSO-East Asian summer monsoon relationship over the past half-millennium Reviewed International coauthorship

Hau Nguyen-Xuan, Sano Masaki, Nakatsuka Takeshi, Chen Shin-Hao, Chen I. -Ching

SCIENCE OF THE TOTAL ENVIRONMENT Vol. 857 ( Pt 2 ) page： 159437 2023.1

愛知県出土材の年輪幅に基づく中世ヒノキ標準年輪曲線（1087–1574 年）の構築． Reviewed

佐野雅規・大石恭平・樋上　昇・中塚　武

文化財科学 Vol. 86 page： 37 - 38 2023

Quantification of drought and long-rain records in historical documents using tree-ring oxygen isotope ratios

Iizuka Hiroto, Syo Kenjiro, Li Zhen, Kato Yoshikazu, Nakatsuka Takeshi

Proceeding of Annual Conference Vol. 36 ( 0 ) page： 17 2023

Interdecadal to Multidecadal Variability of East Asian Summer Monsoon Over the Past Half Millennium Reviewed International coauthorship

Shi Feng, Goosse Hugues, Li Jianping, Yin Qiuzhen, Ljungqvist Fredrik Charpentier, Lian Tao, Sun Cheng, Wang Lin, Wu Zhiwei, Li Juan, Zhao Sen, Xu Chenxi, Liu Wei, Liu Ting, Nakatsuka Takeshi, Guo Zhengtang

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 127 ( 20 ) 2022.10

Different moisture regimes during the last 150 years inferred from a tree-ring delta O-18 network over the transitional zone of the Asian summer monsoon Reviewed International coauthorship

Fan Haowen, Gou Xiaohua, Nakatsuka Takeshi, Li Zhen, Fang Keyan, Su Jiajia, Gao Linlin, Liu Wenhuo

JOURNAL OF HYDROLOGY Vol. 613 2022.10

Different moisture regimes during the last 150 years inferred from a tree-ring δ<sup>18</sup>O network over the transitional zone of the Asian summer monsoon

Fan H., Gou X., Nakatsuka T., Li Z., Fang K., Su J., Gao L., Liu W.

Journal of Hydrology Vol. 613 2022.10

Publisher：Journal of Hydrology

The East Asian summer monsoon (EASM) and Indian summer monsoon (ISM) are two interactive climate systems dominating the moisture variability of Monsoon Asia. However, ISM-EASM interactions and their effects on regional moisture dynamics remain unclear. This study investigated the spatiotemporal characteristics of monsoon-related hydroclimate variability by establishing a new tree-ring oxygen isotope ratio (δ18Otree) network of eight δ18Otree records covering the last 150 years in southern China, which differs from previous studies that used data from individual sites. The δ18Otree chronologies were found to be sensitive to regional hydroclimatic changes during the monsoon season. The δ18Otree network indicated an east–west clustering pattern in the ISM-EASM transitional zone, which demonstrates an asynchrony in δ18Otree variability in the west and east of this region. Regional variability of the west and east δ18Otree modes reflected the different moisture signals, as indicated by their significant correlations with modern observations and paleo-δ18O records in disparate upstream regions of moisture transport (the Indochina Peninsula and Southeast China). This finding was confirmed by the east–west distinct pattern of spatial isotopic depletion of monsoon rainfall that originates from coastal areas of tropical oceans (Bay of Bengal and South China Sea) to the study area, as well as the consistent present-day pattern of atmospheric vapor transport during the monsoon season. In addition, the west and east modes exhibited stronger associations with ISM variability, whereas the east–west δ18Otree gradient captured the EASM-related hydroclimatic signal, suggesting that summer moisture variability in the ISM-EASM transitional zone was regulated more by ISM than by EASM during the last 150 years. The relationships between δ18Otree and large-scale ocean–atmosphere interaction modes revealed that the El Niño-Southern Oscillation (ENSO) dominantly modulates δ18Otree variability across southern China.

DOI： 10.1016/j.jhydrol.2022.128484

Scopus

Water Resource Management Implications for a Desert Oasis From Tree-Ring delta O-18 Variations in Populus Euphratica in Northwest China Reviewed International coauthorship

Li Qiang, Liu Yu, Meko David M., Nakatsuka Takeshi, Pan Yingnan, Song Huiming, Liu Ruoshi, Sun Changfeng, Fang Congxi

WATER RESOURCES RESEARCH Vol. 58 ( 4 ) 2022.4

Book Review 1: Valerie Trouet, Tree Story - The History of the World Written in Rings. Invited

NAKATSUKA, Takeshi

SHI’EN (The Journal of Historical Studies, Rikkyo University) Vol. 82 ( 2 ) page： 155 - 161 2022.3

気候変動と人間社会の歴史的関係から学ぶ－「変化」の速さに着目して Invited

中塚武

学術の動向 Vol. 27 ( 2 ) page： 31 - 35 2022.2

Lesson From Historical Relationship Between Climate Variation and Human Society With Special Focus on the Speed of Change

NAKATSUKA Takeshi

TRENDS IN THE SCIENCES Vol. 27 ( 2 ) page： 2_31 - 2_35 2022.2

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Papers - NAKATSUKA, Takeshi