Crustal structure of the Bonin Trough

H. Katao, R. Hino, H. Kinoshita, S. Nagumo

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


A seismic refraction study using OBSH and explosives was carried out in the Bonin Trough. The P-wave velocity model along the trough axis consists of 4 layers; the velocities, Vp, of these layers are from top to bottom 2.0, 3.6, 6.3 and 7.8 km s-1 respectively. The thickness of the crust is 13 km at the northern part of the trough and becomes thicker toward the south. The negative free-air anomaly pattern in the trough can be explained by thickening of the crust.

Original languageEnglish
Pages (from-to)345-350
Number of pages6
Issue number1-4
Publication statusPublished - 1990 Sep 10

ASJC Scopus subject areas

  • Geophysics
  • Earth-Surface Processes


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