Tulsequah glacier
| Tulsequah glacier | ||
|---|---|---|
| location | British Columbia ( Canada ) | |
| Mountains | Boundary Ranges ( Coast Mountains ) | |
| Type | Valley glacier | |
| length | 25 km | |
| Exposure | Southeast | |
| Altitude range | 1600 m - 100 m | |
| width | ⌀ 1.5 km | |
| Coordinates | 58 ° 50 ′ N , 133 ° 49 ′ W | |
|
||
| drainage | Tulsequah River → Taku River | |
| particularities | Glacier edge lake | |
The Tulsequah Glacier is a 25 km long glacier in the Boundary Ranges 70 km northeast of Juneau in the Canadian province of British Columbia .
geography
The Tulsequah Glacier is located to the southeast of the Juneau Icefield . The nutrient area of the Tulsequah Glacier is located at an altitude of about 1,600 m west of Gisel Peak on the border with Alaska. The glacier initially flows 10 km north. Then he turns to the southeast. It ends at about 100 m above sea level on the west bank of a glacial lake . This is drained via the Tulsequah River , a right tributary of the Taku River . Lake Nolake is located in a side valley that joins to the left . In a right side valley, Tulsequah Lake is another glacial edge lake.
Glacier development
The Tulsequah Glacier is in retreat. Between 1984 and 2013 it withdrew 2500 m and made space for a glacier edge lake. The glacier is known for its glacier runs , the so-called Jökulhlaups . In the process, lakes dammed up by the glacier suddenly empty and produce a flash flood down the valley. Between 1941 and 1971, Tulsequah Lake emptied annually. A similar development has occurred at Lake Nolake since 1990 . In summer these lakes fill with meltwater from the glaciers. You reach the downstream main glacier, which damms it. The hydrostatic pressure causes the glacier to begin flowing. The emptying usually takes a few days.
Web links
- Tulsequah . In: BC Geographical Names (English)