Skip to main content
Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: Lahar characteristics as a function of triggering mechanism at a seasonally snow-clad volcano: contrasting lahars following the 2014 phreatic eruption of Ontake Volcano, Japan

Fig. 4

Field photographs showing the occurrence of the October lahar (muddy, cohesive debris flow: MF) deposits. a Overbank deposits in the Nigorigawa River. The photograph was taken on November 12, 2014, when the river was turbid. b Wrinkles over the surface of the lahar deposits at Loc. 1194. c Lahar deposits (MF) of in-channel facies directly overlie the pre-eruptive (p.e.) fluvial gravel (openwork, clast supported) at Loc. S119. Photograph (May 30, 2015) showing turbidity of the river. d Lahar deposits (MF) of in-channel facies at Loc. S114. e Close-up of the lahar deposits showing massive and muddy matrix supported nature, Loc. S119. f Air bubble vesicles in the muddy matrix, Loc. 1192. g Fringe of the lahar deposits (overbank facies), Loc. 1004. h Close-up of the lahar deposits of overbank facies, Loc. 1004. h Distal end of the lahar deposits, Loc. 1207

Back to article page