Dr Walter D'Alessandro


Istituto Nazionale di Geofisica e Vulcanologia
Sezione di Palermo
via U. La Malfa, 153
90146 Palermo

This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Research Expertise


  1. Fluid geochemistry in volcanic activity monitoring
    • Soil gas surveys (CO2, He, Rn)
    • Cold and thermal groundwater surveys
    • Periodical sampling of cold gas manifestations and soil gases
    • Periodical sampling of groundwaters
  2. Isotope hydrology (O, H, T, C)
    • Rainwater
    • Groundwater
  3. Environmental effects of volcanic activity
    • Water quality of volcanic aquifers
    • Rainwater chemistry
    • Ash leachates
    • Volcanic gas survey through passive (diffusive) samplers
    • Atmospheric deposition and interaction with soils
    • Effects of volcanic-derived chemicals on vegetation

Main research areas: volcanoes of southern Italy (Etna, Vulcano, Pantelleria, Stromboli, Ischia, Phlegrean Fields) and volcanic systems of the south Aegean volcanic arc in Greece (Sousaki, Methana, Milos, Santorini and Nisyros).


Relevant Publications

Aiuppa, A., Avino, R., Brusca, L., Caliro, S., Chiodini, G., D'Alessandro, W., Favara, R., Federico, C., Ginevra, W., Inguaggiato, S., Longo, M., Pecoraino, G., & Valenza, M. (2006) ‘Mineral control of arsenic content in thermal waters from volcano-hosted hydrothermal systems: Insights from island of Ischia and Phlegrean Fields (Campanian Volcanic Province, Italy)’, Chemical Geology, 229, 313–330.

Aiuppa, A., Bellomo, S., Brusca, L., D'Alessandro, W., Di Paola, R., & Longo, M. (2006) ‘Major-ion bulk deposition around an active volcano (Mt. Etna, Italy)’, Bulletin of Volcanology, 68, 255-265.

Aiuppa, A., Bellomo, S., Brusca, L., D'Alessandro, W., & Federico, C. (2003) ‘Natural and anthropogenic factors affecting groundwater quality of an active volcano (Mt. Etna, Italy)’, Appl. Geochem, 18, 863-882.

Aiuppa, A., Bellomo, S., D'Alessandro, W., Ferm, M., Valenza, M. (2003) ‘Influence of volcanic passive degassing on air quality in the Mt. Etna area’, In: Air Pollution XI (Brebbia, C.A. & Patania, F. Eds.) 263-271.

Aiuppa, A., Bonfanti, P., Brusca, L., D'Alessandro, W., Federico, C., & Parello, F. (2001) ‘Evaluation of the environmental impact of volcanic emissions from the chemistry of rainwater: Mount Etna area (Sicily)’. Appl. Geochem, 16 (7-8), 985-1000.

Aiuppa, A., Bonfanti, P., & D'Alessandro, W. (2003) ‘The chemistry of rainwater in the Mt. Etna area (Italy): natural and anthropogenic sources of major species’, J. Atmosph. Chem, 46, 89-102.

Aiuppa, A., D’Alessandro, W., Federico, C., Ferm, M., & Valenza, M. (2004) ‘Volcanic plume monitoring at Mount Etna by diffusive (passive) sampling’, Journal of Geophysical Research, 109/D21, D21308.

Aiuppa, A., D'Alessandro, W., Federico, C., Palumbo, B., & Valenza, M. (2003) ‘The aquatic geochemistry of arsenic in volcanic groundwaters from southern Italy’, Applied Geochemistry, 18(9), 1283-1296.

Aiuppa, A., Franco, A., Von Glasow, R., Allen, A.G., D’Alessandro, W., Mather, T.A., Pyle, D.M., & Valenza, M. (2007) ‘The tropospheric processing of acidic gases and hydrogen sulphide in volcanic gas plumes as inferred from field and model investigations’, Atmospheric Chemistry and Physics, 7, 1441–1450.

Bagnato, E., Aiuppa, A., Parello, F., Calabrese, S., D’Alessandro, W., Mather, T.A., McGonigle, A.J.S., Pyle, D.M., & W√§ngberg, I. (2007) ‘Degassing of gaseous (elemental and reactive) and particulate mercury from Mount Etna volcano (Southern Italy)’, Atmospheric Environment, 41(35), 7377-7388.

Bagnato, E., Aiuppa, A., Parello, F., D’Alessandro, W., Allard, P., & Calabrese, S. (2009) ‘Mercury concentration, speciation and budget in volcanic aquifers: Italy and Guadeloupe (Lesser Antilles)Journal of Volcanology and Geothermal Research, 179, 96-106.

Bellomo, S., Aiuppa, A., D’Alessandro, W., & Parello, F. (2007) ‘Environmental impact of magmatic fluorine emission in the Mt. Etna area’, Journal of Volcanology and Geothermal Research, 165, 87-101.

Bellomo, S., D'Alessandro, W., & Longo, M. (2003) ‘Volcanogenic fluorine in rainwater around active degassing volcanoes: Mt. Etna and Stromboli island, Italy’, Sci. Total Environ, 301, 175-185.

D’Alessandro, W. (2006) ‘Gas hazard: an often neglected natural risk in volcanic areas’, In: Geo-Environment & Landscape Evolution II (Martin-Duque J.F., Brebbia C.A., Emmanouloudis D.E, Mander U. Eds.) WIT Press Southampton, UK, 369-378.

D’Alessandro, W. (2006) ‘Human fluorosis related to volcanic activity: a review’, In: Environmental Toxicology (Kungolos A.G., Brebbia C.A., Samaras C.P., Popov V. Eds.) WIT Press Southampton, UK, 21-30.

D'Alessandro, W., Aiuppa, A., Bellomo, S., Hauser, S., & Palumbo, B. (2002) ‘Sources and sinks of fluorine in the atmosphere and hydrosphere of the active volcanic area of Mt. Etna (Italy)’, Abstract volume of the 6th International Symposium on the Geochemistry of the Earth's Surface GES-6, Honolulu, Hawaii, 20-24 May 2002, 309-314.

D’Alessandro, W., Brusca, L., Kyriakopoulos, K., Michas, G., & Papadakis, G. (2009) ‘Hydrogen sulphide as a natural air contaminant in volcanic/geothermal areas: the case of Sousaki, Corinthia (Greece)’, Environmental Geology, 57, 1723-1728.

D'Alessandro, W. & Vita, F. (2003) ‘Groundwater radon measurements in the Mt. Etna area’, Journal of Environmental Radioactivity, 65/2, 187–201. 

English Dutch French German Greek Italian Japanese Portuguese Russian Spanish Indonesian

Latest News


Download our pamphlets on preparing for ashfall and on the health hazards of ash. They are designed for mass distribution at the onset of new eruptions. They are now avaiable in English, Japanese, French Spanish, Portuguese, Swahili, Indonesian and Icelandic with Italian versions being available shortly. Please see our Pamphlets page for further infomation.





IVHHN has an article under the Guidelines tab which used to be called 'Recommended Face Masks'. This has now been updated to 'Information on face masks' and is an interim page whilst the Health Interventions in Volcanic Eruptions project investigates which types of respiratory protection are effective in protecting the general population from volcanic ash inhalation. Please note that the translations in Spanish, Japanese and Portuguese have not yet been updated.



WebSTAT - Free Web Statistics