Low temperature volcanic fluids and volcanic gases (I)

24 Nov 2014 | Contributor(s): dmitri rouwet

This presentation is a lecture on gas geochemistry held during the 2014 Cotopaxi Summer School.

Recognizing and tracking volcanic unrest: a probabilistic approach

24 Nov 2014 | Contributor(s): dmitri rouwet

This presentation is a lecture on probabilistic hazard assessment held during the 2014 Cotopaxi Summer School.

Low temperature volcanic fluids and volcanic gases (I)

24 Nov 2014 | Contributor(s): dmitri rouwet

This presentation is a lecture on gas geochemistry held during the 2014 Cotopaxi summer school. 

VOLADA – the first collaborative data base on Volcanic Lakes

23 Aug 2013 | Contributor(s): dmitri rouwet, Veronica Chiarini

There are more volcanic lakes on Earth than previously thought. The here presented data base is first in its kind and compiles the available information on ~340 volcanic lakes worldwide. It aims to become a complete and interactive tool, in which researchers can add, extract and use data in a...

A probabilistic framework to quantify hazard related to volcanic lakes

23 Aug 2013 | Contributor(s): dmitri rouwet, Laura Sandri, raul mora-amador

The presence of a volcanic lake increases the probability of certain types of volcanic hazard. So far, this topic has only been approached in a purely deterministic way, e.g.: phreatic-phreatomagmatic eruption behavior, dynamics of Nyos-type gas bursts and gas accumulation and dispersion, models...

Numerical simulations (TOUGH2) to quantify crater lake seepage: a case study for Laguna Caliente, Poás Volcano (Costa Rica)

23 Aug 2013 | Contributor(s): massimo nespoli, micol todesco, dmitri rouwet, maurizio bonafede, raul mora-amador

Volcanic lakes are different from the common reservoirs of meteoric origin because of the interaction with the hydrothermal system of the volcano. The hot fluids (gas + liquid) of volcanic origin rise through the bottom of the lake resulting in strong acidic water and a variable temperature...

Qualitative insights (Cl, D) into evaporative degassing from active crater lakes: theoretical background and practical tools

23 Aug 2013 | Contributor(s): dmitri rouwet, Takeshi Ohba

This work provides the theoretical background and necessary practical tools to study one of the most spectacular natural features: vigorous evaporation from active crater lakes. We will give qualitative insights (lake water chemical –Cl content, and isotopical composition) rather than quantify...

Science & Arts workshops to increase volcanic risk awareness: Chapultenango, near El Chichón volcano (Chiapas, Mexico)

23 Aug 2013 | Contributor(s): dmitri rouwet, marta iorio, Demetrio Polgovsky

This independent and informal study is based on good-will, common sense, working ethics and morality, rather than on a pre-meditated education method or strategy, with the goal to increase the public awareness of volcanic risk in the Zoque indigenous community of Chapultenango, near El Chichón...