Marine ecological dynamics studies on deep-sea off Sanriku region

Fiscal Year

2012

Title

Marine ecological dynamics studies on deep-sea off Sanriku region

Project and Theme

Project 3. Research on factors controlling open ocean benthopelagic ecosystem dynamics
Representative Organization: Japan Agency for Marine-Earth Science and Technology
Theme1. Research on mapping and decomposition of debris in fisheries grounds
Representative personYoshihiro Fujiwara
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team
Theme2. Research on distribution, behavior and population structure of biological resources
Representative personKatsunori Fujikura
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team
Theme3. Long-term monitoring of the physic-chemical environment in fisheries grounds
Representative personShuichi Watanabe
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team
Theme4. Trophic position and bioaccumulation studies in marine organisms
Representative personNaohiko Ohkouchi
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team
Theme5. Habitat and ecosystem mapping
Representative personHiroshi Kitazato
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team

Research Information

Period and Interval
2012/07/30 - 2012/08/07
Research Area
Off Sanriku region
0002_R01_map00.pdf
Category
Research Cruise
Overview
We investigated marine organisms and debris distributions, environmental factors measurements and topography.

Overview of the Observation

Research Point Table
Polygon
NameArea:YK12-12
Coordinates37.5,141.66667/37.5,144/39.75,144.5/39.75,142.11667
RemarksVertexes of the polygon
Research Point Map & Track Chart Map & Point List
0002_R01_list01.pdf, 0002_R01_map01.pdf
Results and Future Plan
Detail investigation subjects are topographic surveys, mapping of scattered debris, distribution patterns and diversity of benthic organisms and sediments components. Based on these data and samples, we will construct habitat map for ecosystem management in Sanriku areas. During this cruise in Off Iwate and Miyagi areas, we investigated following subjects, - Distribution patterns of benthic organism, geological, debris distribution, chemical and physics analyses using 6000 m class deep-towing TV camera system: YKDT, - Topographic surveys using MBES, - Geophysical survey using Gravity & Magnet meters. All data will be analyzed to estimate impact to the marine ecosystems by the 2011 Off Tohoku Earthquake and tsunami.

Investigation Item and Data Acquisition

Investigation ItemData Acquisition
Deep-sea bottom observations using the "Deep tow survey system: YKDT6000"Photo, Movie, Salinity, Conductivity, Pressure, Dissolved oxygen concentration
Bathymetric survey using the multi-beam echo sounderThree-component magnet data, Topography, Gravity

Reference

Related Observation Plan
FY2012 Marine ecological dynamics studies on deep-sea off Sanriku region
Related Observation Data
YK12-12_DT CTD DO Turbidity
YK12-12_DT_movie
YK12-12_DT_picture
YK12-12 Biological sample data
YOKOSUKA YK12-12 Navigation
YOKOSUKA YK12-12 Bathymetry (MBES)
YOKOSUKA YK12-12 Gravity
YOKOSUKA YK12-12 Shipboard Acoustic Doppler Current Profiler (ADCP)
YOKOSUKA YK12-12 Expendable Bathythermograph (XBT)
YOKOSUKA YK12-12 Expendable Bathythermograph (XBT) Fall-rate bias corrected

Person in charge of Investigation

Representative personKatsunori Fujikura
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team

Keywords

Fiscal Year2012
OrganizationJapan Agency for Marine-Earth Science and Technology
CategoryResearch Cruise
Research AreaSouth Sanriku
Off Tohoku
Ishinomaki Bay
North Jouban
DisciplineOcean physics -> Water temperature
Ocean physics -> Salinity
Ocean chemistry -> Salinity
Ocean chemistry -> Dissolved oxygen
Ocean environment -> Others
Ocean environment -> Sediment
Ocean environment -> Creature
Ocean biology / Ocean ecology -> Biological classification
Ocean biology / Ocean ecology -> Biomass
Ocean biology / Ocean ecology -> Ecology
Ocean biology / Ocean ecology -> Fishes
Ocean biology / Ocean ecology -> Fungi
Topography / Geology / Geophysics -> Bathymetry
Topography / Geology / Geophysics -> Topography
Topography / Geology / Geophysics -> Seabed morphology
Topography / Geology / Geophysics -> Marine sediments
Topography / Geology / Geophysics -> Rock
Topography / Geology / Geophysics -> Geomagnetism
Topography / Geology / Geophysics -> Gravity