Volcanohistology: when eruptions make a difference

Volcanoes are frightening. They can dramatically alter the local landscape, and change people’s live – normally for the worse. The best place to be is far away. But large eruptions can have wider impacts. The ash can cover regions a continent away, and sulphate aerosols can spread at high altitude around the world. The sulphate…

Eldgja: Eruption dating

The previous post described what we think we know about the Eldgja eruption. Our knowledge about one of the largest eruptions in Iceland is somewhat limited, surprisingly so given that Iceland was already well populated. One of the few things which seems secure is the date. Eldgja is believed to date to 934 AD, continuing…

Perfect Symmetry – The New Decade Volcano Program #9

For sheer beauty, few volcanoes can match the symmetrical cone of Mayon as it rises almost directly out of the Gulf of Albay, not even mount Fuji itself. Indeed, the cone is considered the world’s most perfectly formed volcano for its symmetry ( David Lee, 2008). Added to that, a beautiful tropical setting, tranquil blue…

A new Decade Volcano Program – An Introduction

The current Decade Volcano Program First of all, let me make one thing abundantly clear. This is a list put forth by us as suggestion for a new Decade Volcano program. But, in the end it is the International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI) that decides if there will be…