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Diffuse CO2 degassing survey at Timanfaya volcano, Lanzarote

SEP 1
Number of positions available: 2

10-timanfaya

During repose periods, volcanoes can release large amounts of gas as visible (fumaroles, solfataras, plumes) and non-visible (diffuse degassing) emanations.

The surface dynamics of gas emissions are usually controlled by local volcano-tectonics and hydrology, as permeable tectonic structures are the main pathways for the transport of gases to the surface.

Because CO2 is the major gas species after water vapour both in volcanic fluids and in magmas and is an effective tracer of subsurface magma degassing, diffuse CO2 emission at volcanoes have played an important role in volcano monitoring.

The goal of this study is to evaluate the 2020 diffuse CO2 emission from Timanfaya volcano and compare these values with previous data.

The two selected students for this programme will perform field and lab work related to diffuse volcanic degassing monitoring of Timanfaya volcano, Lanzarote, Canary Islands.

During this programme students will learn how to:

  • perform in-situ soil CO2 efflux measurements
  • collect soil gas samples for chemical and isotopic analysis
  • apply statistical-graphical analysis on the diffuse CO2 degassing survey data
  • estimate the total difusse CO2 emission from Timanfaya volcano using Gaussian simulations
  • perform chemical analysis of the collected soil gas samples by means of micro-chromatography (microGC) and quadrupole mass spectrometry (QMS)