TY - JOUR
T1 - Enhancement of eruption explosivity by heterogeneous bubble nucleation triggered by magma mingling
AU - Paredes-Mariño, Joali
AU - Dobson, Katherine J.
AU - Ortenzi, Gianluigi
AU - Kueppers, Ulrich
AU - Morgavi, Daniele
AU - Petrelli, Maurizio
AU - Hess, Kai-Uwe
AU - Laeger, Kathrin
AU - Porreca, Massimiliano
AU - Pimentel, Adriano
AU - Perugini, Diego
PY - 2017/12/4
Y1 - 2017/12/4
N2 - We present new evidence that shows magma mingling can be a key process during highly explosive eruptions. Using fractal analysis of the size distribution of trachybasaltic fragments found on the inner walls of bubbles in trachytic pumices, we show that the more mafic component underwent fracturing during quenching against the trachyte. We propose a new mechanism for how this magmatic interaction at depth triggered rapid heterogeneous bubble nucleation and growth and could have enhanced eruption explosivity. We argue that the data support a further, and hitherto unreported contribution of magma mingling to highly explosive eruptions. This has implications for hazard assessment for those volcanoes in which evidence of magma mingling exists.
AB - We present new evidence that shows magma mingling can be a key process during highly explosive eruptions. Using fractal analysis of the size distribution of trachybasaltic fragments found on the inner walls of bubbles in trachytic pumices, we show that the more mafic component underwent fracturing during quenching against the trachyte. We propose a new mechanism for how this magmatic interaction at depth triggered rapid heterogeneous bubble nucleation and growth and could have enhanced eruption explosivity. We argue that the data support a further, and hitherto unreported contribution of magma mingling to highly explosive eruptions. This has implications for hazard assessment for those volcanoes in which evidence of magma mingling exists.
KW - Volcanic eruption
KW - magma mingling
KW - magmatic interaction
KW - heterogeneous bubble nucleation
KW - hazard assessment
UR - http://www.scopus.com/inward/record.url?scp=85037162826&partnerID=8YFLogxK
U2 - 10.1038/s41598-017-17098-3
DO - 10.1038/s41598-017-17098-3
M3 - Article
C2 - 29203840
AN - SCOPUS:85037162826
SN - 2045-2322
VL - 7
JO - Scientific Reports
JF - Scientific Reports
M1 - 16897
ER -
