Report on Jebel at Tair (Yemen) — 31 October-6 November 2007
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 31 October-6 November 2007
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2007. Report on Jebel at Tair (Yemen). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 31 October-6 November 2007. Smithsonian Institution and US Geological Survey.
Jebel at Tair
15.55°N, 41.83°E; summit elev. 244 m
All times are local (unless otherwise noted)
Since the beginning of an eruption of Jebel at Tair on 30 September, the MODIS satellite detected thermal anomalies over the island every day through 6 November.
Geologic Background. The basaltic Jebel at Tair volcano rises from a 1,200 m depth in the south-central Red Sea, forming an oval-shaped island about 3 km long. Jebel at Tair (one of many variations of the name, including Djebel Teyr, Jabal al Tayr, and Jibbel Tir ) is the northernmost known Holocene volcano in the Red Sea and lies SW of the Farisan Islands. Youthful basaltic pahoehoe lava flows from the steep-sided central vent, Jebel Duchan, cover most of the island. They drape a circular cliff cut by wave erosion of an older edifice and extend beyond it to form a flat coastal plain. Pyroclastic cones are located along the NW and S coasts, and fumarolic activity occurs from two uneroded scoria cones at the summit. Radial fissures extend from the summit, some of which were the sources of lava flows. The island is of Holocene age, and explosive eruptions were reported in the 18th and 19th centuries.