Lake Nakatsuna

Lake Nakatsuna (中綱湖, Nakatsuna-ko) is a lake in Ōmachi Nagano Prefecture, Japan. It is one of the "Nishina Three Lakes" (Lake Aoki, Lake Nakatsuna and Lake Kizaki).^[3] Its sediments have been studied in an effort to better understand climate change in Japan, finding evidence of the Medieval Warm Period and Little Ice Age.^[1][2]

Lake Nakatsuna
Lake Nakatsuna in winter
Lake Nakatsuna
Location	Ōmachi, Nagano, Japan
Coordinates	36°30′N 137°51′E
Lake type	Eutrophic lake
Surface area	12.5 hectares (31 acres)[1][2]
Max. depth	12 metres (39 ft)[3]
Surface elevation	820 m (2,690 ft)
Settlements	Near Omachi, Nagano, Honshū, Japan

References

1. Adhikari, Danda Pani; Fujio Kumon (June 26, 2000). "Climatic Records During Last 1500 Years in the Sediments of Lake Nakatsuna, Central Japan" (PDF). Archived from the original (PDF) on March 5, 2012. Retrieved December 22, 2010.
2. Adhikari, D.P.; Kumon, F. . (December 2001). "Climatic changes during the past 1300 years as deduced from the sediments of Lake Nakatsuna, central Japan". Limnology. 2 (3): 157–168. doi:10.1007/s10201-001-8031-7.
3. "Kizaki-ko (Lake Kizaki)". International Lake Environment Committee. Archived from the original on May 23, 2011. Retrieved December 22, 2010.