Portal de Periódicos da CAPES

Possible Micrometeorological Anomalies Induced by Volcanic Activity Recorded at Stromboli Island (Aeolian Archipelago, Italy)

2015; Hindawi Publishing Corporation; Volume: 2015; Linguagem: Inglês

10.1155/2015/434090

1687-9317

Aashish Chaudhary, Jonathan Beezley, David Manthey, Ben Burnett, C.J. Harris, Dan LaManna, David E DeMarle, Bradley R. King, Roni Choudhury, Manas Pawar, Charles Law, Wendel Bezerra Silva, Jamie Snape, Jeffrey Baumes, Matt Bertrand, Derek Connor Johnston, Zach Mullen, Guillaume Vialaneix, Bitdeli Chef,

Geology and Paleoclimatology Research

Hourly values of atmospheric pressure and air temperature have been acquired at the top of two volcanic islands, Stromboli and Salina in the Aeolian Archipelago (Italy), very similar in height and morphology but completely different with regard to their volcanic activity state: the former is permanently active, whereas the latter is extinguished. During the last four years Stromboli experienced normal activity, volcanic unrests, and an effusive eruption (August–November 2014). The comparative analysis of the recorded data, both in the time and frequency domains, evidenced a peculiar micrometeorological regime at Stromboli, more turbulent during unrests with respect to the quieter periods, but showing an apparent paradox during eruptions, characterized by a lower atmospheric turbulence. These observations suggest that the studied volcanic-micrometeorological system is chaotic, due to contemporary opposite transients generated in the atmosphere by volcanic activity changes, and that micrometeorological conditions in volcanic areas are controlled both by exogenous processes and volcanic activity.