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VDAP team at Ol Doinyo Lengai 9 March 2009

Posted by admin in Africa, eruptions, natural hazards, Ol Doinyo Lengai, Tanzania.
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VDAP and Geological Survey of Tanzania scientists take ash samples at Ol Doinyo Lengai, 22 January 2009 (USGS image).

A team from the Volcano Disaster Assistance Program has been hard at work in Tanzania, working with the Geological Survey of Tanzania and the Tanzanian Disaster Management Department to assess the volcanic hazards presented by Ol Doinyo Lengai. This USGS press release tells the story.

Ol Doinyo Lengai is currently highly active, and has been having a very disruptive effect on the people who live around it. It is also unmonitored: ‘We usually do not deal with volcanoes that have no monitoring equipment, so this forced us to look at the situation in a new way’ comments project leader Gari Mayberry. ‘We determined that disaster risk reduction education may be the most feasible way to reduce the hazard around Ol Doinyo Lengai in the short term’.

Ol Doinyo Lengai is the world’s only carbonate volcano, erupting low-temperature natrocarbonatite lavas. Most of the volcano’s eruptive activity is effusive, but silicate material can find its way into the volcano’s system producing explosive eruptions. Ol Doinyo Lengai has been in an explosive eruptive phase since September 2007.

Image: Scientists from the Volcano Disaster Assistance Program team and the Geological Survey of Tanzania take a sample of the most recent ashfall from Ol Doinyo Lengai as the volcano looms in the background, 22 January 2009. Photographer: Gari Mayberry (USGS image). [source]

[Via Geology News.]

Information
Global Volcanism Program: Ol Doinyo Lengai – information about Ol Doinyo Lengai (0202-12=)
Ol Doinyo Lengai – latest news, detailed information and many images of Ol Doinyo Lengai at Frederick A. Belton’s site
The Oldoinyo Lengai web site – by Celia Nyamweru of St Lawrence University

The Volcanism Blog