Strombolian eruptions are relatively low-level volcanic eruptions, named after Stromboli, where such eruptions consist of rhytmical ejection of incandescent cinder, lapilli and lava bombs to altitudes of tens to hundreds of meters. They are small to medium in volume, with sporadic violence. Eruption redirects here. ... Sciara del fuoco For other uses see Stromboli (disambiguation) Stromboli is a small island in the Tyrrhenian Sea, containing one of the active volcanos in Italy. ... Incandescence is the release of electromagnetic radiation from a hot body due to its high temperature. ... Cinders are nut-sized pieces of red or black rock fragments resulting from the ejection of liquid lava that are uncemented vitric, vesicular, pyroclastic material, more than 2. ... Lapilli are small particles of solidified lava (tephra) thrown into the air by volcanic eruptions. ... A lava bomb is a globule of molten rock (tephra) larger than 2. ...

The tephra typically glows red when leaving the vent, but its surface cools and assumes a dark to black color and nearly soilidifies before impact. The tephra accumulates in the vicinity of the vent, forming a cinder cone. Cinder is the most common product, the amount of volcanic ash is typically rather minor. Tephra refers to air-fall material produced by a volcanic eruption regardless of composition or fragment size. ... Cinder Cone is a cinder cone volcano in Lassen Volcanic National Park. ... Diamond Head, a well-known backdrop to Waikiki in Hawaii, is an ash cone that solidified into tuff Volcanic ash is the term for very fine rock and mineral particles less than 2 mm in diameter that are ejected from a volcanic vent. ...

This pattern is named for the type of activity exhibited by the volcano of Stromboli, in Italy. Sciara del fuoco For other uses see Stromboli (disambiguation) Stromboli is a small island in the Tyrrhenian Sea, containing one of the active volcanos in Italy. ...

The lava flows are more viscous, and therefore shorter and thicker, than the corresponding Hawaiian eruptions; it may or may not be accompanied by production of pyroclastic rock. Look up lava, Aa, and pahoehoe in Wiktionary, the free dictionary. ... Viscosity is a measure of the resistance of a fluid to deformation under shear stress. ... Hawaiian eruptions are relatively gentle, low level volcanic eruptions, named for the volcanoes of Hawaii. ... Pyroclastic rocks and deposits comprise the entire range of fragmental products deposited directly by explosive or effusive volcanic eruptions. ...

Instead the gas coaleses into bubbles, that grow large enough to rise through the magma column, bursting near the top due to the decrease in pressure and throwing magma into the air. Each episode is caused by the release of volcanic gases, typically a few minutes apart, sometimes rhythmically and sometimes irregularly.

Strombolian eruptions are long-lasting, from few hours to days to several years; eg. the Paricutin volcano erupted continuously between 1943-1952. The Izalco volcano has also grown by Strombolian eruptions. Paricutín is a volcano in the Mexican state of Michoacán, close to the village of the same name. ... Izalco is a municipality in the Sonsonate department of El Salvador. ...

See also

• Plinian eruptions.

Eruption of Vesuvius in 1822. ...

External links

• explanation with photos on academic site
• comparison of volcanic blast types
• USGS Photo Glossary
• Modelling of Volcano for CG/CFD Papers with abstracts, images, and PDFs of modelling of Strombolian (explosive) volcano for computer graphics (CG) and coputational fluid dynamics (CFD). The main entrance page is here.