Japan Geoscience Union Meeting 2015

Presentation information

Oral

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 11:00 AM - 12:45 PM 202 (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), Chair:Makoto Yamada(Research Institute for Humanity and Nature), Masahiko Ono(National Institute of Advanced Industrial Science and Technology)

12:00 PM - 12:15 PM

[ACG33-11] Analysis about the condition of sea water intrusion to Yodo River estuary by the fluid model

*Ippei NAKAMURA1, Yuto KOYAMA1, Satoshi NAKADA1, Mitsuru HAYASHI1 (1.Kobe University)

Keywords:Yodo River, sea water intrusion, Red tide, shellfish poison, fluid model

Red tide of Alexandrium tamarense occurred in Yodo River estuary in recent years. A. tamarense is marine phytoplankton and causes shellfish poisoning. Sea water intrusion to Yodo River is one of the reasons of marine phytoplankton survive. We investigated the distribution of the sea water intrusion by in-situ observation, then reproduced it by the fluid model. Fluid structure of Yodo River estuary consists by the runoff of fresh water, the esturey circulation, the tidal current and the wind driven circulation. These had contributed at almost same rate to sea water ascension.