Hokusai’s volcano

At the British Museum, there is an exhibition of the popular paintings by Katsushika Hokusai (1760–1849). There are several images of the Fuji volcano.hokusai_highlight_fuji_1000.jpg

They are symbols of natural power and human vulnerability.  Hokusai’s infatuation with Mount Fuji was much more than an admiration of its beauty. The Tale of the Bamboo Cutter told that a goddess placed an elixir of life at the top of the peak, and thus the mountain was a secret source of immortality, as well as a secret reason for Hokusai’ obsession with the mountain.

hokusai_highlight_umezawa_1000.jpg

This gave him a chance to explore and experiment with its beauty. hokusai_highlight_snowy_1000.jpg

A section through a present-day volcano shows its hidden structure:

th-1.jpeg    Volcano_scheme.svg.png

Cross-section through a stratovolcano (vertical scale is exaggerated):

  1. Large magma chamber
  2. Bedrock
  3. Conduit (pipe)
  4. Base
  5. Sill
  6. Dike
  7. Layers of ash emitted by the volcano
  8. Flank
  9. Layers of lava emitted by the volcano
  10. Throat
  11. Parasitic cone
  12. Lava flow
  13. Vent
  14. Crater
  15. Ash cloud