| Caption: |
Potential hazards from a volcanic eruption at the Long Valley caldera near Mammoth Lakes, California. Red area and diagonal lines show the hazard from flows of all types (pyroclastic, debris, mud, lava) out to a distance of approximately 20 km (12 mi.) Lines surrounding the larger orange and yellow hazard areas represent potential ash thicknesses: 20 cm (8 in.) at the 35 km (22 mi.) dashed line; 5 cm (2 in.) at the 85 km (53 mi.) dotted line; and 1 cm (0.4 in.) at the 300 km (190 mi.) solid line. These hazard estimates assume an explosive eruption of approximately 1 km3 (0.24 mi.2) of tephra from the vicinity of recently active vents. (From Miller, C. D., Mullineaux, D. R., Crandell, D. R., and Bailey, R. A. 1982. Potential hazards from future volcanic eruptions in the Long Valley--Mono Lake area, and east-central California and southwest area, and eastcentral Nevada--A preliminary assessment. U.S. Geological Survey Circular 877) |
| Keywords: |
volcanoes, volcanism, volcanic eruptions, composite cones, stratovolcanoes, calderas, pyroclastics, maps |
