Japan Geoscience Union Meeting 2015

Presentation information


Symbol A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG33] Land-Ocean Interaction -Water and material cycle for coastal ecosystems-

Tue. May 26, 2015 6:15 PM - 7:30 PM Convention Hall (2F)

Convener:*Ryo Sugimoto(Faculty of Marine Biosciences, Fukui Prefectural University), Makoto Yamada(Research Institute for Humanity and Nature), Masahiko Ono(National Institute of Advanced Industrial Science and Technology), Jun Shoji(Hiroshima University)

6:15 PM - 7:30 PM

[ACG33-P03] Geochemical investigation for evaluation of submarine groundwater discharge in Suruga Bay

*Masahiko ONO1, Reo IKAWA1, Isao MACHIDA1, Atsunao MARUI1, Yasuhide MURANAKA2, Takafumi KAMITANI2, Koichi OHYAMA2, Akira ITO2 (1.National Institute of Advaneced Industrial Science and Technology, 2.Shizuoka Institute of Environmental and Hygiene)

Keywords:submarine groundwater discharge, Suruga Bay, geochemical tracer

Submarine groundwater discharge (SGD) has been recognized as an important pathway for material transport from land to ocean and it is expected as ubiquitous phenomenon in coastal area. Our study site, Suruga Bay is adjacent to the southern foot of Mt. Fuji where the permeable lava flow deposits and the active groundwater flow system exist. Therefore, large amount of SGD could be occurred at the coastal area.
To estimate the spatial distribution of SGD, geophysical surveys such as multi-beam sonar, side scan sonar and sub-bottom profiler, have been conducted in this area. This study attempts to evaluate SGD by using geochemical tracers, such as radon and radium in coastal water. We will show the spatial distribution of these tracers in Suruga Bay and discuss their relationship to SGD.