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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Estimation of total discharged mass from the phreatic eruption of Ontake Volcano, central Japan, on September 27, 2014

Fig. 2

Isopleth mass distribution map of the September 27, 2014, eruption of Ontake Volcano. a Proximal, medial, and distal area. b Proximal and medial area. Sampling location and values are based on AIST (2014). Orange triangles Proximal Area Survey Joint Research Team, red squares Earthquake Research Institute (ERI, University of Tokyo), Mt. Fuji Research Institute (MFRI), Geological Survey of Hokkaido (GSH), Tokyo Institute of Technology (TIT), and Izu Peninsula Geopark (IPGP); blue star Shinshu University; green circle Geological Survey of Japan (GSJ), AIST; yellow cross National Research Institute for Earth Science and Disaster Prevention (NIED); pink diamond Dia Consultants (DIA); and purple pentagon Nihon Koei (N-Koei). The digital 1:25,000 topographic map published by the Geospatial Information Authority of Japan (GSI) was used as a base map

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