Johns Hopkins Glacier
| Johns Hopkins Glacier | ||
|---|---|---|
 Johns Hopkins Glacier |
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| location | Alaska ( USA ) | |
| Mountains | Fairweather Range ( Elias chain ) | |
| Type | Valley glacier | |
| length | 19 km | |
| Exposure | east | |
| Altitude range | 1500 m - 0 m | |
| width | ⌀ 1.4 km | |
| Coordinates | 58 ° 48 ′ N , 137 ° 15 ′ W | |
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| drainage | Johns Hopkins Inlet ( Glacier Bay ) | |
| particularities | Tidal glaciers | |
 The glacier in 2002 |
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The Johns Hopkins Glacier is a 19 km long glacier in Glacier Bay National Park of Alaska . It was named in 1893 by HF Reid after Johns Hopkins University in Baltimore (Maryland).
geography
The Johns Hopkins Glacier stretches from the slopes of Lituya Mountain and Mount Salisbury , located in the southern Fairweather Range , west to Johns Hopkins Inlet , a western side bay of Glacier Bay , into the head area of which it flows.
Glacier development
In the early 2000s, the Johns Hopkins Glacier was the only advancing tidal glacier on the east side of the Fairweather Range. Around 1990 the glacier tongue of the Johns Hopkins Glacier reached the Gilman Glacier to the southwest , with which it has since formed a closed wall of ice. The glacier tongue of the 1.4 km wide glacier rises 75 m above the waterline. The ice wall measures 60 m under water. Between the 50 or so tributary glaciers that flow into it, there are central moraines , which run as black bands along the otherwise white ice surface. At the end of the 1970s, the average speed that the ice travels down the valley was around 900 m per year (that's 2.5 m per day). Ice blocks often calve on the glacier front . A specialty of the glacier is the submarine calving, when suddenly icebergs emerge from the water.
Web links
- Johns Hopkins Glacier in the Geographic Names Information System of the United States Geological Survey
Individual evidence
- ^ Johns Hopkins Glacier in the United States Geological Survey's Geographic Names Information System
- ↑ a b c d e f Daniel E. Lawson: An Overview of Selected Glaciers in Glacier Bay (PDF, 698 kB) National Park Service, US Dept. of the Interior. February 2004. Retrieved November 20, 2017.
