A transient model for explosive and phreatomagmatic eruptions
نویسندگان
چکیده
منابع مشابه
Amenthes Cones, Mars: Hydrovolcanic (tuff) Rings and Cones from Phreatomagmatic Explosive Eruptions on Mars
Introduction: Mars was volcanically active throughout most, if not all, of its history [e.g., 1-4], and volcanism played a significant role in the formation of its surface. Another factor modifying the Martian surface is water, both in liquid and frozen state, and at and beneath the surface [e.g., 5]. Interactions of magma with water and/or ice should be common on Mars, therefore. On Earth, suc...
متن کاملPhase equilibria trigger for explosive volcanic eruptions
[1] A mechanism for explosive volcanic eruptions based on multicomponent phase equilibria modelling of four explosive volcanic systems is proposed. In each system, either isochoric or isobaric crystallization, where either crystals or crystals and exsolved fluid are chemically fractionated from melt, leads inevitably to near-solidus dynamical instability culminating in violent explosive eruptio...
متن کاملEvidence for Recent Large Magnitude Explosive Eruptions at Damavand Volcano, Iran with Implications for Volcanic Hazards
Damavand is a large dormant stratovolcano in the Alborz Mountains of northern Iran located in one of the most populous provinces, which could be adversely affected by tephra fall from Damavand. The youngest known eruption is a lava flow on the western flanks with an age of 7.3 ka. The volcanic products are predominantly porphyritic trachyandesite. Three major young pumice deposits, named here a...
متن کاملSulfur as a binding agent of aggregates in explosive eruptions
Understanding the mechanisms that govern ash aggregation is of critical importance in volcanology. Aggregation reduces the residence time of ash (≤2 mm) in the atmosphere strongly, by enhancing the sedimentation of finer-grained material generated during explosive eruptions. To date, experimental studies have focused on the expectation that water provides the strongest bonds between particles t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Volcanology and Geothermal Research
سال: 2005
ISSN: 0377-0273
DOI: 10.1016/j.jvolgeores.2004.09.014