Japan Geoscience Union Meeting 2018

Presentation information

[JJ] Poster

S (Solid Earth Sciences) » S-CG Complex & General

[S-CG61] Ocean Floor Geoscience

Wed. May 23, 2018 10:45 AM - 12:15 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Kyoko Okino(Atmosphere and Ocean Research Institute, The University of Tokyo)

[SCG61-P17] Plume observation in hydrothermal fields using multi-beam sonar

*Chiharu Aoyama1, Mantaro Kondo1, Ryosuke Nakamura1, Kanami Noda1, HIDENORI KUMAGAI2 (1.Tokyo University of Marine Science and Technology, 2.Japan Agency for Marine-Earth Science and Technology)

Keywords:MultibeamSONAR, Plume, Volume Back scattering Strength

Multi-beam sonar (EM122) onboard “YOKOSUKA” and “KAIMEI” is capable of measuring precise submarine topography and obtaining water column data. It can be used to measure plumes discharged underwater, and to analyze the data. This function is used to measure seeping plumes in hydrothermal sea area. The author examined the acoustic data (Volume Backscattering Strength=SV) analysis to figure out if it is possible to distinguish the components of the plumes.