Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/4830
Authors: | Melnik, O.* Sparks, R. S. J.* Costa, A.* Barmin, A.* |
Title: | Volcanic Eruptions:Cyclicity during Lava Dome Growth | Issue Date: | 4-Jul-2008 | URL: | http://hdl.handle.net/2122/2887 | Keywords: | Volcanic Eruptions Cyclicity During Lava |
Subject Classification: | 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous 04. Solid Earth::04.08. Volcanology::04.08.04. Thermodynamics 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk |
Abstract: | We consider the process of slow extrusion of very viscous magma that forms lava domes. Dome-building eruptions are commonly associated with hazardous phenomena, in- cluding pyroclastic flows generated by dome collapses, explosive eruptions and volcanic blasts. These eruptions commonly display fairly regular alternations between pe- riods of high and low or no activity with time scales from hours to years. Usually hazardous phenomena are asso- ciated with periods of high magma discharge rate, thus, understanding the causes of pulsatory activity during ex- trusive eruptions is an important step towards forecasting volcanic behavior, especially the transition to explosive ac- tivity when magma discharge rate increases by a few orders of magnitude. In recent years the risks have increased be- cause the population density in the vicinity of many active volcanoes has increased. |
Appears in Collections: | Book chapters |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
MelSpa-08.pdf | 2.21 MB | Adobe PDF | View/Open |
Page view(s) 50
167
checked on Mar 27, 2024
Download(s) 20
375
checked on Mar 27, 2024