Fiscal Year
2016
Title
Researches on marine ecosystem dynamics off Sanriku
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 |
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| Organization | Japan Agency for Marine-Earth Science and Technology |
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| Department | Eastern Japan Marine Ecosystems Dynamics Project team |
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Research InformationPeriod and Interval2017/03/12 - 2017/03/31
Research Area
CategoryField survey, Research Cruise
OverviewThe purpose of this cruise is to understand impacts on marine ecosystems by the 2011 Earthquake of the Pacific coast of Tohoku and Tsunami, and to contribute for recover and rebuild of Sanriku fisheries activities in terms of marine science. Target areas are continental slope. This cruise is conducted under the TEAMS project, namely Tohoku Ecosystem Array of Marine Sciences. Detailed investigation subjects are distribution patterns and diversity of benthic organisms, seawater and sediments geochemistry, and sediments characteristics. Based on these data and samples, we will construct habitat map for ecosystem management in Sanriku areas.
Overview of the Observation
Research Point Map & Track Chart Map & Point List
Results and Future PlanPurpose, background
The purpose of this cruise is to understand impacts on marine ecosystems by the 2011 Earthquake of the Pacific coast of Tohoku and Tsunami, and to contribute for recover and rebuild of Sanriku fisheries activities in terms of marine science. Target areas are continental slope. This cruise was conducted under the TEAMS project, namely Tohoku Ecosystem Array of Marine Sciences. Detailed investigation subjects are distribution patterns and diversity of benthic organisms, seawater and sediments geochemistry, and sediments characteristics. Based on these data and samples, we will construct habitat map for ecosystem management in Sanriku areas.
Observations, Activities
1. CTD cast and water sampling/biogeochemical analysis
2. Assessment of phytoplankton photosynthesis by fast repetition rate fluorometry (FRRF)
3. Plankton sampling by using NORPAC net
4. Survey of plankton distribution by quantitative echo sounder
5. Bathymetric survey by the Multi-narrow Beam Echo Sounding system (MBES) equipped on-board
6. Seafloor condition created by Side Scan Sonar (SSS) system under tow
7. Sub-bottom structure by the Sub-Bottom Profiler (SBP) system equipped on-board
Reference
Related Observation Plan
Related Observation Data
Person in charge of Investigation
| Representative person | Masahide Wakita |
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| Organization | Japan Agency for Marine-Earth Science and Technology |
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| Department | Eastern Japan Marine Ecosystems Dynamics Project team |
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| Fiscal Year | 2016 |
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| Organization | Japan Agency for Marine-Earth Science and Technology |
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| Category | Field survey
Research Cruise
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| Research Area | North Sanriku
South Sanriku
Off Tohoku
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| Discipline | Ocean physics -> Water temperature
Ocean physics -> Salinity
Ocean physics -> Transparency / Turbidity
Ocean chemistry -> Salinity
Ocean chemistry -> Dissolved oxygen
Ocean chemistry -> Nutrients
Ocean chemistry -> pH
Ocean chemistry -> Organic matter
Ocean chemistry -> Carbon dioxide
Ocean chemistry -> Methane
Ocean chemistry -> Total carbonic acid
Ocean chemistry -> Alkalinity
Ocean environment -> pH
Ocean environment -> Nutrients
Ocean environment -> Plant pigments
Ocean environment -> Organic carbon
Ocean environment -> Organic nitrogen
Ocean environment -> Carbon dioxide
Ocean environment -> Alkalinity
Ocean environment -> Primary production
Ocean environment -> Seawater
Ocean biology / Ocean ecology -> Biological classification
Ocean biology / Ocean ecology -> Plankton
Topography / Geology / Geophysics -> Bathymetry
Topography / Geology / Geophysics -> Topography
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