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| Titel |
Combination of SAR remote sensing and GIS for monitoring subglacial volcanic activity – recent results from Vatnajökull ice cap (Iceland) |
| VerfasserIn |
K. Scharrer, R. Malservisi, Ch. Mayer, O. Spieler, U. Münzer |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 7, no. 6 ; Nr. 7, no. 6 (2007-11-27), S.717-722 |
| Datensatznummer |
250004817
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| Publikation (Nr.) |
 copernicus.org/nhess-7-717-2007.pdf |
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| Zusammenfassung |
| This paper presents latest results from the combined use of SAR (Synthetic
Aperture Radar) remote sensing and GIS providing detailed insights into
recent volcanic activity under Vatnajökull ice cap (Iceland). Glaciers
atop active volcanoes pose a constant potential danger to adjacent inhabited
regions and infrastructure. Besides the usual volcanic hazards (lava flows,
pyroclastic clouds, tephra falls, etc.), the volcano-ice interaction leads
to enormous meltwater torrents (icelandic: jökulhlaup), devastating
large areas in the surroundings of the affected glacier. The presented
monitoring strategy addresses the three crucial questions: When will an
eruption occur, where is the eruption site and which area is endangered by
the accompanying jökulhlaup. Therefore, sufficient early-warning and
hazard zonation for future subglacial volcanic eruptions becomes possible,
as demonstrated for the Bardárbunga volcano under the northern parts of
Vatnajökull. Seismic activity revealed unrest at the northern flanks of
Bardárbunga caldera at the end of September 2006. The exact location of
the corresponding active vent and therefore a potentially eruptive area
could be detected by continuous ENVISAT-ASAR monitoring. With this knowledge
a precise prediction of peri-glacial regions prone to a devastating outburst
flood accompanying a possible future eruption is possible. |
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