Janisjarwi
| Janisjarwi, Jänisjärvi | ||
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| Image of Jänisjärvi | ||
| Geographical location | Republic of Karelia ( Russia ) | |
| Tributaries | Janisjoki | |
| Drain | Janisjoki | |
| Data | ||
| Coordinates | 61 ° 58 ′ N , 30 ° 55 ′ E | |
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| Altitude above sea level | 64 m | |
| surface | 200 km² | |
| length | 18.2 km | |
| width | 15 km | |
| Maximum depth | 57 m | |
| Middle deep | 12 m | |
| Catchment area | 3660 km² | |
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particularities |
Impact crater |
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| Landsat image of Janisjarwi | ||
The Janisjarwi ( Russian Янисъярви ; Finnish name Jänisjärvi , "Hasensee") is a 200 km² lake in the Republic of Karelia in Russia, north of Lake Ladoga .
The lake is traversed by Jänisjoki and drained to Lake Ladoga to the south. The catchment area of the lake covers 3660 km².
The basin of the approximately circular lake is the result of a meteorite impact 700 ± 5 million years ago (according to other sources 698 ± 22 million years) during the cryogenium .
The impact crater has a diameter of 14 km.
Before the Second World War , it was thought to be the second known volcanic caldera in Finland - the other was Lake Lappajärvi . It later emerged that both lakes had formed in impact craters.
Individual evidence
- ↑ a b c State Water Directory of the Russian Federation - Озеро Янисъярви (Янис-ярви, Большое Янисъярви)
- ↑ a b Impact Structures of the World - Jänisjärvi
- ↑ Earth Impact Database, University of New Brunswick ( Memento of the original from July 1, 2018 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
Web links
Commons : Lake Yanisyarvi - Collection of Images, Videos and Audio Files
