Low cost volcano deformation monitoring: optical strain measurement and application to Mount St. Helens data

Details Low cost volcano deformation monitoring: optical strain measurement and application to Mount St. Helens data Low cost volcano deformation monitoring: optical strain measurement and application to Mount St. Helens data

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011geoji.186..699w&link_type=abstract

Geophysical Journal International, Volume 186, Issue 2, pp. 699-705.

Physics

Image Processing, Eruption Mechanisms And Flow Emplacement, Remote Sensing Of Volcanoes, Volcano Monitoring

Scientific paper

This paper describes an innovative method of volcano deformation measurements, applied to camera images taken from the 2004-2008 eruption period at Mount St. Helens. Dome growth was thought to be characterized by sustained, near-linear rates of a solid dacite plug. Through spatial digital image correlation (DIC) analysis of the camera images, new evidences arise that the deformation and strain rate of the spine was more complex. DIC yielded cumulative and incremental displacements, strain and shear planes at decimetre resolution. It was found that dome extrusion rates are highly non-linear, decelerating prior to partial collapse, followed by a pronounced dome extrusion increase and direction change. Associated processes have been identified through DIC, such as shallow landslides and reworking of talus apron material. The work highlights the strengths of camera strain monitoring, and illustrates that dome growth and collapse is a very dynamic process complexly interplaying with the surrounding.

Affiliated with

Also associated with

No associations

Rating

Low cost volcano deformation monitoring: optical strain measurement and application to Mount St. Helens data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Low cost volcano deformation monitoring: optical strain measurement and application to Mount St. Helens data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low cost volcano deformation monitoring: optical strain measurement and application to Mount St. Helens data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1674688