Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2214
Authors: | Lodato, L.* Spampinato, L.* Harris, A. J. L.* Calvari, S.* Dehn, J.* Patrick, M.* |
Title: | The morphology and evolution of the Stromboli 2002–2003 lava flow field: an example of a basaltic flow field emplaced on a steep slope | Journal: | Bull. Volcan. | Series/Report no.: | / 69 (2007) | Publisher: | Springer | Issue Date: | 2007 | DOI: | 10.1007/s00445-006-0101-6 | Keywords: | Lava flow field Morphology Tumuli Lava tubes Effusion rate Rheology Stromboli volcano |
Subject Classification: | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk |
Abstract: | The use of a hand-held thermal camera during the 2002–2003 Stromboli effusive eruption proved essential in tracking the development of flow field structures and in measuring related eruption parameters, such as the number of active vents and flow lengths. The steep underlying slope on which the flow field was emplaced resulted in a characteristic flow field morphology. This comprised a proximal shield, where flow stacking and inflation caused piling up of lava on the relatively flat ground of the vent zone, that fed a medial–distal lava flow field. This zone was characterized by the formation of lava tubes and tumuli forming a complex network of tumuli and flows linked by tubes. Most of the flow field was emplaced on extremely steep slopes and this had two effects. It caused flows to slide, as well as flow, and flow fronts to fail frequently, persistent flow front crumbling resulted in the production of an extensive debris field. Channel-fed flows were also characterized by development of excavated debris levees in this zone (Calvari et al. 2005). Collapse of lava flow fronts and inflation of the upper proximal lava shield made volume calculation very difficult. Comparison of the final field volume with that expecta by integrating the lava effusion rates through time suggests a loss of ~70% erupted lava by flow front crumbling and accumulation as debris flows below sea level. Derived relationships between effusion rate, flow length, and number of active vents showed systematic and correlated variations with time where spreading of volume between numerous flows caused an otherwise good correlation between effusion rate, flow length to break down. Observations collected during this eruption are useful in helping to understand lava flow processes on steep slopes, as well as in interpreting old lava–debris sequences found in other steep-sided volcanoes subject to effusive activity. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
Lodato et al 2007.pdf | 1.25 MB | Adobe PDF |
WEB OF SCIENCETM
Citations
49
checked on Feb 10, 2021
Page view(s) 50
298
checked on Apr 24, 2024
Download(s)
20
checked on Apr 24, 2024