Abstract
A sudden eruption at Santa Ana occurred on 1 October 2005, producing an ash-and-gas plume to a height in excess of 10 km above the volcano. Several days before, thermal infrared images of the crater provided precursory signals of the eruption. A significant increase in the extent and intensity of the fumarolic field inside the crater rim and of the surface temperature of the crater’s lake was observed. Changes in energy input was also estimated to explain the increase in lake temperature based on energy/mass balance calculations.
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Hernández, P.A. et al. (2007). Crater Lake Temperature Changes of the 2005 Eruption of Santa Ana Volcano, El Salvador, Central America. In: Pérez, N.M., Gurrieri, S., King, CY., Taran, Y. (eds) Terrestrial Fluids, Earthquakes and Volcanoes: The Hiroshi Wakita Volume II. Pageoph Topical Volumes. Birkhäuser Basel. https://doi.org/10.1007/978-3-7643-8720-4_9
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