KS-17-J08C cruise:Researches on marine ecosystem dynamics in the Tsunami affected area off Sanriku

Fiscal Year

2017

Title

Project and Theme

Project 3. Research on factors controlling open ocean benthopelagic ecosystem dynamics

Representative Organization: Japan Agency for Marine-Earth Science and Technology

Research on factors controlling open ocean benthopelagic ecosystem dynamics

Representative person	Yoshihiro Fujiwara
Organization	Japan Agency for Marine-Earth Science and Technology
Department	Eastern Japan Marine Ecosystems Dynamics Project team

Research Information

Period and Interval

2017/05/28 - 2017/06/15

Research Area

Off Sanriku
0235_R01_01.png, 0235_R01_02.png

Overview

We conduct the geographic survey off Onagawa for creating a detailed bathymetric map of the Sanriku coast after the earthquake and tsunami. We also conduct the hydrographic observation using CTD-system to obtain the information of hydrographic structure and to collect seawater samples for analyzing biological and chemical components. Lander is deployed about 1,000m depth off Otsuchi to conducting long-term monitoring of marine environments near the seafloor.

Overview of the Observation

Research Point Table

Point

Name	D-3
Coordinates	38.499833,141.8355
Name	D-4
Coordinates	38.500333,142.081
Name	O-1
Coordinates	39.251833,142.1665
Name	O-2
Coordinates	39.233833,142.334333
Name	O-3
Coordinates	39.2685,142.501333
Name	R-2
Coordinates	39.332333,142.461167
Remarks	Lander deployment
Name	O-4
Coordinates	39.249833,142.666167
Name	O-5
Coordinates	39.25,142.917
Name	O-6
Coordinates	39.218833,143.166833
Name	D-8
Coordinates	38.500833,143.083
Name	D-7
Coordinates	38.499,142.833167
Name	D-6
Coordinates	38.522833,142.589
Name	D-5
Coordinates	38.501667,142.335167

Polygon

Name	KS-17-J08C research area
Coordinates	38,141/38,144/39.5,144/39.5,141/38,141

Research Point Map & Track Chart Map & Point List

0235_R01_04.png

Results and Future Plan

We conducted the geographic survey off Onagawa, in which area was not covered with previous cruises, for creating a detailed bathymetric map of the Sanriku coast after the earthquake and tsunami. We also conducted the hydrographic observation using CTD-system to obtain the information of hydrographic structure at 13 stations and to collect seawater samples for analyzing biological and chemical components. Lander was deployed at about 1,000m depth off Otsuchi to conduct long-term monitoring of marine environments near the seafloor.

Investigation Item and Data Acquisition

Investigation Item	Data Acquisition
Measurement of water temperature, salinity, dissolved oxygen, fluorescence and others with CTD system	Water temperature, Salinity, Dissolved Oxygen, Transmission, Fluorescence, water samples
Measurement of water temperature, salinity, dissolved oxygen, fluorescence and turbidity with FRRF-Rinko profiler	Water temperature, Salinity, Dissolved Oxygen, Turbidity, Fluorescence

Reference

Related Observation Plan

FY2017 KS-17-J08C cruise:Researches on marine ecosystem dynamics in the Tsunami affected area off Sanriku

Related Observation Data

Person in charge of Investigation

Representative person	Shuichi Watanabe
Organization	Japan Agency for Marine-Earth Science and Technology
Department	Mutsu Institute for Oceanography (MIO), Research Institute for Global Change (RIGC)

Contact person about data & samples

Representative person	Shuichi Watanabe
Organization	Japan Agency for Marine-Earth Science and Technology
Department	Mutsu Institute for Oceanography (MIO), Research Institute for Global Change (RIGC)

Representative person	Masahide Wakita
Organization	Japan Agency for Marine-Earth Science and Technology
Department	Analyses of Changes in East Japan Marine Ecosystems Research and Development Group (JAM-TEAMS), Marine Biodiversity and Environmental Assessment Research Center (BioEnv)

Keywords

Fiscal Year	2017
Organization	Japan Agency for Marine-Earth Science and Technology
Category	Field survey Mooring system (Observation buoy) Research Cruise
Research Area	South Sanriku
Discipline	Ocean physics -> Water temperature Ocean physics -> Salinity Ocean physics -> Transparency / Turbidity Ocean chemistry -> Salinity Ocean chemistry -> Dissolved oxygen Ocean chemistry -> Total carbonic acid Ocean chemistry -> Alkalinity Ocean environment -> Nutrients Ocean environment -> Plant pigments Ocean biology / Ocean ecology -> Plankton

KS-17-J08C cruise:Researches on marine ecosystem dynamics in the Tsunami affected area off Sanriku

Fiscal Year

Title

Project and Theme

Project 3. Research on factors controlling open ocean benthopelagic ecosystem dynamics

Research on factors controlling open ocean benthopelagic ecosystem dynamics

Research Information

Period and Interval

Research Area

Category

Overview

Overview of the Observation

Research Point Table

Research Point Map & Track Chart Map & Point List

Results and Future Plan

Investigation Item and Data Acquisition

Reference

Related Observation Plan

Related Observation Data

Related Site

Person in charge of Investigation

Contact person about data & samples

Keywords