small amounts of gas. These types of eruptions produce volcanoes called "sulfuric" because of the research at Sakurajima. Scientists now know that the presence of硫 means lightning seems to form in the area in summer. So when scientists use machines to find lightning at volcanoes, experts can...
Volcanoes are mountains that result from lava flows or eruptions. The flows and eruptions occur when magma and gases break through Earth's surface, sometimes quietly, sometimes explosively. Volcanoes–named for Vulcan, the Roman god of fire–are classified according to the kind of eruption that fo...
The eruptions of volcanoes are various in surface features as well as in magnitude, depending upon their geographical position, structure, crater condition, physical and petrochemical nature of the ejecta, etc. Referring principally to the recent eruptions which occurred within the last few scores of...
Volcanologists classify eruptions into several different types. Some are named for particular volcanoes where the type of eruption is common; others concern the resulting shape of the eruptive products or the place where the eruptions occur. Here are some of the most common types of eruptions:Table...
1. Fissure Volcanoes Lakagígar Eldgjá Canyon Afar Region Fissure volcanoes are characterized by long, linear cracks or fissures in the earth’s surface from which lava erupts. These eruptions usually do not involve explosive activity but involve the effusion of large quantities of lava that flows...
1.Effusiveeruptions–magmarisesthroughthesurfaceandflowsoutofthevolcanoasaviscousliquidcalledlava.2.Explosiveeruptions–magmaistornapartasitrisesandreachesthesurfaceinpiecesknownaspyroclasts.Whydovolcanoesbehaveinsuchdifferentways?Whetheravolcanowilleruptexplosivelyoreffusivelyisdeterminedbythepresenceofbubbles.Magmas...
A simple cross-section of a composite volcano When composite volcanoes erupt they are explosive and pose a threat to nearby life and property. Eruptions are explosive due to the thick, highly viscous lava that is produced by composite cone volcanoes. This viscous lava has a lot to do with wh...
where characteristic behavior is similar—hence the use of such terms as “Strombolian,”“Vulcanian,”“Vesuvian,”“Pelean,”“Hawaiian,” and others. Some volcanoes may exhibit only one characteristic type of eruption during an interval of activity—others may display an entire sequence of types...
Types of volcanic eruptions Lava and other volcanic matter are expelled in many distinctive ways. These ways were named after how some well-known volcanoes gave out lava. These are as follows: Strombolian eruption: In this eruption, clots of molten lava burst from the vent (summit) into the ...
Some of the most famous effusive volcanoes include Kilauea in Hawaii and Etna in Italy. These volcanoes are known for their long-term eruptions that produce large amounts of lava. Explosive Eruption Explosive eruptions are less common than effusive eruptions, but they can be much more violent. ...