Grensdalur
| Grensdalur | ||
|---|---|---|
 Fumaroles belonging to the Grensdalur system in Hveragerði |
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| location | Iceland | |
| Waters | Grændalsá | |
| Geographical location | 64 ° 2 '47 " N , 21 ° 11' 26" W | |
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| particularities | Part of the Hengill - triple point | |
Grensdalur , also Grænsdalur , is a small volcanic system near and in the town of Hveragerði in southern Iceland . It is named after the valley of the same name. At its highest point, Mount Álútur , it reaches 471 m.
Naming
It is located in the east of the Reykjanes peninsula , and because two of its high temperature areas are near or in the town of Hveragerði, it is sometimes referred to as the Hveragerði system . The name Grænadalur system can also be found, as many of the associated springs are located in the Grænadalur.
Neighboring volcanic systems
In the northwest, the Grensdalur volcano system borders the systems of the Hengill and the Hrómundartindur . The Grensdalur system is the oldest of these three volcanic systems. The last eruptions were in the Pleistocene .
High temperature areas
In Hveragerði there is a geothermal area that is a mixture of high and low temperature areas with fumaroles , hot springs , mud pots and a small geyser called Grýla , which is rarely active.
Since the severe earthquake in 2008 that shook the south of Iceland, an actually extinct high-temperature area in the northeast of the town has revived. The springs, located on the slopes of Mount Reykjafjall and largely in the area of the University of Agriculture, are growing in size.
The activity in the Grensdalur valley and the adjacent valleys is also growing.
See also
Web links
map
- http://www.voyage-islande.fr/visiteurs/reykjadalur.pdf Tourist map of the area of the Grensdalur system from Hveragerði in the south to the Hrómundartindur system with the Ölkelduháls in the north (PDF file)
Scientific contributions
- Grensdalur in the Global Volcanism Program of the Smithsonian Institution (English)
- To the Reykjanes Peninsula, Amy Clifton, Univ. Iceland (English, PDF file)
- Amy E Clifton, Freysteinn Sigmundsson et al. a .: Surface effects of faulting and deformation resulting from magma accumulation at the Hengill triple junction, SW Iceland, 1994-1998. In: Journal of Volcanology and Geothermal Research. 115, 2002, p. 233, doi : 10.1016 / S0377-0273 (01) 00319-5 . (On bulges on the Hrómundartindur and Grensdalur 1994–98, English)
- On an earthquake series 1994-2002 at the Hengill Triple Point, Meteorol. Inst., Iceland
- To research earthquakes in the area of the Hengill Triple Point (PDF file)
Videos on the development of the new high temperature area
- Video: The new sources, about 10 days after the June 11, 2008 earthquake
- Further development: August 2009
- June 2010