TY - JOUR
T1 - Late Holocene monsoonal-climate change inferred from Lakes Ni-no-Megata and San-no-Megata, northeastern Japan
AU - Yamada, Kazuyoshi
AU - Kamite, Masaki
AU - Saito-Kato, Megumi
AU - Okuno, Mitsuru
AU - Shinozuka, Yoshitsugu
AU - Yasuda, Yoshinori
N1 - Funding Information:
The authors thank T. Nakamura, I. Ono, M. Masuya, Y. Tanimura, and R. Tajiri for technical support in the field and laboratory. We also wish to thank J. Matsumoto and J. Komori for their valuable comments on the manuscript. This study was financed by the Ministry of Education, Culture, Sports, Science and Technology, Japan (Grant no. 18100007, leader: Prof. Y. Yasuda) and the Tokyo Foundation (the project of Civilization and Environment, leader: Prof. Y. Yasuda).
PY - 2010/6
Y1 - 2010/6
N2 - Micro-sedimentological, geochemical data from Lakes Ni-no-Megata and San-no-Megata in northeastern Japan are used to reconstruct environmental and climate changes over the last 2000 years. Comparing these records in two neighboring maar lakes allows reconstruction of centennial scale climate change concerned the East Asian monsoon activities without the influence of human activities. S content and coarse mineral grains records show that long-term climate changes, with one warm/humid interval from AD 1200 to 750, and two cold/dry intervals from AD 1 to 750, AD 1200 to the present. These climate changes have similar trends to Asian monsoon records in China, and could correspond to the Dark Age Cold Period (DACP), the Medieval Warm Period (MWP) and the Little Ice Age (LIA) climate changes in Europe. Moreover, short-term climatic deterioration events occurred in the 6th, 10th and 18th centuries. Particularly the event around the 10th century is well correlated with other paleoclimate proxies in China, Europe and Mesoamerica, suggesting tele-connection by atmospheric circulation through the Northern Hemisphere. However, the record is asynchronous with solar activity. This might suggest the solar forcing has indirectly influenced lake sedimentation associated with Asian monsoon activities in Japan.
AB - Micro-sedimentological, geochemical data from Lakes Ni-no-Megata and San-no-Megata in northeastern Japan are used to reconstruct environmental and climate changes over the last 2000 years. Comparing these records in two neighboring maar lakes allows reconstruction of centennial scale climate change concerned the East Asian monsoon activities without the influence of human activities. S content and coarse mineral grains records show that long-term climate changes, with one warm/humid interval from AD 1200 to 750, and two cold/dry intervals from AD 1 to 750, AD 1200 to the present. These climate changes have similar trends to Asian monsoon records in China, and could correspond to the Dark Age Cold Period (DACP), the Medieval Warm Period (MWP) and the Little Ice Age (LIA) climate changes in Europe. Moreover, short-term climatic deterioration events occurred in the 6th, 10th and 18th centuries. Particularly the event around the 10th century is well correlated with other paleoclimate proxies in China, Europe and Mesoamerica, suggesting tele-connection by atmospheric circulation through the Northern Hemisphere. However, the record is asynchronous with solar activity. This might suggest the solar forcing has indirectly influenced lake sedimentation associated with Asian monsoon activities in Japan.
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U2 - 10.1016/j.quaint.2009.09.006
DO - 10.1016/j.quaint.2009.09.006
M3 - Article
AN - SCOPUS:77953807429
SN - 1040-6182
VL - 220
SP - 122
EP - 132
JO - Quaternary International
JF - Quaternary International
IS - 1-2
ER -
