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Title: 尾瀬ヶ原における河川と池溏の水文地形学
Other Titles: Hydrogeological studies of rivers and bog pools in Ozegahara mire ecosystems
Authors: 野原, 精一1 Browse this author
村田, 智吉2 Browse this author
藤原, 英史3 Browse this author
福原, 晴夫4 Browse this author
萩原, 富司5 Browse this author
千賀, 有希子6 Browse this author
Authors(alt): Nohara, Seiichi1
Murata, Tomoyoshi2
Fujiwara, Eiji3
Fukuhara, Haruo4
Hagiwara, Tomiji5
Senga, Yukiko6
Keywords: 泥炭地湿原
bog pools
environmental change
Ozegahara mire
Issue Date: 31-Mar-2022
Publisher: 低温科学第80巻編集委員会
Journal Title: 低温科学
Journal Title(alt): Low Temperature Science
Volume: 80
Start Page: 95
End Page: 122
Abstract: 尾瀬ヶ原は面積約7.6km2の本州最大の泥炭地・山岳湿原である.気候変動の湿原への影響を探るため湿原における洪水の影響を明らかにすることを目的に研究を実施した.2019年5月に融雪による洪水が発生し,上田代の池溏は滝のような流れを受け,池溏底質の洗堀や湿原への流出が観察された.洪水前後に粒度分析を行った結果,洪水後の池溏には数μmの非常に小さな球形無機粒子や無機粒子があり,水深約1mより深い池溏はしばらく濁った.直後にUAVの空撮によって詳細な濁りの分布が明らかになった.研究見本園の表層から約1m深に無機成分の多い層が見られ,過去約1,300年前の洪水履歴とみられた.
Ozegahara mire is the largest peatland (7.6 km2) in the mainland of Japan. The mire is located on the amphitheater-shaped basin surrounded by high mountains of 2,000 m. The heavy snow flooding in torrents was happened in May 2019 at Kamitashiro area. The turbidity of bog pools in Kamitashiro increased in May 2019, by surface water and ground water inflow. After the flooding, distribution of the muddy water in bog pool was taken by air photography of UAV. The high content of inorganic particle was detected from peatland sediment of about 1 m depth layer and estimated by historical flooding about 1,300 years ago. The bog pool KA1-04 had early snowmelt by ground water inflow from middle bog pool.
Type: bulletin (article)
Appears in Collections:低温科学 = Low Temperature Science > 第80巻

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