Photograph by T.N. Mattox on November 30, 1993
The most energetic and dangerous tephra jets occur immediately following the collapse of a lava delta's leading edge. Jets of spatter and cooled lava fragments can reach more than 40 m in height.
The URL of this page is: http://hvo.wr.usgs.gov/hazards/oceanentry/deltaexplosions/4296033_photocaption.html
Updated: 2 June 2000 (SRB)