When Was Kansa Shrine at Lake Tazawa Art Made
Globe:Lake Tazawa
From HandWiki
: Caldera lake in northern Japan
| Lake Tazawa | |
|---|---|
 Kansa Shrine and Lake Tazawa (Feb. 2021) | |
| Lake Tazawa | |
| Location | Semboku, Akita Prefecture |
| Coordinates | Coordinates: 39°43′30″Northward 140°39′41″Eastward / 39.725°N 140.66139°E / 39.725; 140.66139 |
| Lake type | crater lake (?) |
| rivers, streams, precipitation">Primary inflows | no natural inflow |
| rivers, streams, evaporation">Principal outflows | no natural outflow |
| Basin countries | Japan |
| Surface surface area | 25.nine kmtwo (10.0 sq mi) |
| Average depth | 280.0 m (918.6 ft) |
| Max. depth | 423.4 k (i,389 ft) |
| Water volume | 7.ii km3 (5.8×ten |
| Shore length1 | 20 kilometres (12 mi) |
| Surface elevation | 290 m (950 ft) |
| ane Shore length is not a well-divers measure. | |
Lake Tazawa (田沢湖 , Tazawa-ko) is a caldera lake in the city of Semboku, Akita Prefecture, northern Nippon . It is the deepest lake in Nihon at 423 metres (i,388 ft). The area is a popular vacation area and several hot jump resorts can be found in the hills above the lake. Akita Prefecture's largest ski area, Tazawako Ski Area [ja], overlooks the lake.
Hydrology
Lake Tazawa has a surface elevation of 249 meters, and its deepest point is 174.4 meters beneath body of water level. Due to this depth, there is no possibility that the lake is frozen in the expressionless of winter. At 425 metres (1,394 ft), information technology is slightly deeper than Lake Shikotsu in Hokkaidō (423.4 meters), and is the 17th deepest lake in the world. Lake Tazawa has no natural arrival or outflow, and in 1931, had a measured transparency of 31 meters, comparable with Lake Mashū, merely with abundant aquatic organisms. Yet, due to the structure of hydroelectric power plant facilities and agricultural runoff, coupled with an influx of highly acidic water from Tamagawa Hot Spring, transparency has been reduced to less than 4 meters, and by the belatedly 1940s the lake had become then acidic (pH iv.iii) that information technology could no longer support irrigated agriculture. Starting in 1972, the Japanese government has been attempting to rectify the acidity problem through introduction of lime, with a new facility completed in 1991. However, in the year 2000, the lake still had an acidity of five.xiv at the 200 meter depth, and 4.91 at the 400 meter depth, indicating that full recovery has not however been accomplished.
Geology
Due to its farthermost depth, and almost round contour, Lake Tazawa was considered to exist either a caldera lake caused by volcanic activeness or a crater lake acquired by a meteorite impact. The depth of the lake was first measured as 397 meters, using a hemp rope, by Japanese geologist Tanaka Akamaro in 1909. The Akita Prefectural Fisheries Experiment Station survey indicated a depth of 413 meters in 1926 using a wire rope. During a three-year survey from 1937-1940, geologist Yoshimura Nobuyoshi surveyed the lake lesser, finding the deepest point to be 425 metres (1,394 ft). The survey also found two small-scale volcanic cones and sedimentation deposits to the depth of effectually one kilometer on the northward-west side of the lake bottom. These findings lend credence to the theory that the lake is indeed of volcanic origin, from an explosive eruption of 1.four million years ago.
Natural history
Prior to 1940, the main species of fish in Lake Tazawa included the ethnic kunimasu (Oncorhynchus nerka kawamurae), Sockeye salmon, Japanese dace (genus Tribolodon), Japanese trout, char, carp, catfish and eel. However, afterward the acidic content of the lake changed in 1940, the just surviving fish is the dace, while about of the other species, including the kunimasu, are idea to have gone extinct.
History
Lake Tazawa was named in the Meiji period when its surrounding foothills were settled. Yet, the lake was known to the Ainu people, and the name "Tazawa" is thought to exist derived from the Ainu language Tapukopu ("loma with a raised circular top")
The lake is likewise connected with the legendary maiden of beauty, Tatsuko, itself of unknown origin. Tazawa has a statuary statue of Tatsuko virtually its shore. Tatsuko, wishing for undying youth and beauty, is said to have been turned into a lake-goddess. The statue of Tatsuko past Yasutake Funakoshi stands with her back to the clear blue waters, a figure of pureness and dazzler, and was unveiled on April 12, 1968.[1] [2]
Run across besides
- Listing of lakes in Japan
- Listing of volcanoes in Japan
Notes
- ↑ Funakoshi Yasutake - website of the Iwate Museum of Fine art (retrieved 2013-4-22)
- ↑ http://www.city.semboku.akita.jp/en/sightseeing/spot/04_tatsukozou.html (retrieved 2013-iv-22)
References
- Likens, Gene. Lake Ecosystem Ecology: A Global Perspective. Bookish Press (2010) ISBN:9780123820020
- Wilkening, Kenneth. Acid Rain Science and Politics in Nippon: A History of Knowledge and Activity. MIT Printing (2004) ISBN:0262731665
External links
- "Tazawa". Smithsonian Institution. https://volcano.si.edu/volcano.cfm?vn=283883.
- Tazawa Ko Caldera - Geological Survey of Nippon
- Japan National Tourism Arrangement
- Tazawako Tourist Association(in Japanese)
Source: https://handwiki.org/wiki/Earth:Lake_Tazawa
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