Diving researches on deep-sea marine ecosystems after Tohoku tsunami using the ROV Hyper-Dolphin

Fiscal Year

2013

Title

Diving researches on deep-sea marine ecosystems after Tohoku tsunami using the ROV Hyper-Dolphin

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
2013/10/06 - 2013/11/04
Research Area
Off Sanriku
0045_P01_map01.pdf
Category
Research Cruise
Overview
And the large purpose of "Studies on the mechanism of offshore bottom layer ecosystem", elucidation of the decomposition process and rubble mapping (1) fishing grounds, the agency in the "Northeast Marine Science COE Business", the distribution of (2) resources and biological analysis of population structure and understanding of behavior, long-term monitoring (3) of living marine resources (fisheries) environment, toxic substances accumulate rating and trophic level (4) organisms, the theme of the five (5) ecosystem habitat mapping I have to carry out original research. In this voyage, of (1), elucidation of rubble decomposition process and precise mapping of rubble and terrain in fishing grounds, out of (2), Bio-tracking and understanding of the distribution of resources organism, living marine resources environment of the (3) seawater monitoring, acquisition of sediment, primarily engaged in the evaluation, of hazardous substances accumulated amount of organisms of the (4) long-term. In addition, by using data on resources biodistribution terrain, mapping and rubble, after investigation, to be used as a basis of information ecosystem Habitat mapping (5).

Investigation Item and Data Acquisition

Investigation ItemData Acquisition
Undersea observation study(Topography, geology, debris, sediment, seawater around) undersea video data
Bottom organisms studyDistribution, and species composition of bottom organisms, grain size distribution
Towed acoustic surveyBack scatter data, subbottom data

Reference

Related Observation Result
FY2013 Diving researches on deep-sea marine ecosystems after Tohoku tsunami using the ROV Hyper-Dolphin

Person in charge of Investigation

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

Keywords

Fiscal Year2013
OrganizationJapan Agency for Marine-Earth Science and Technology
CategoryResearch Cruise
Research AreaSouth Sanriku
DisciplineOcean physics -> Water temperature
Ocean physics -> Salinity
Ocean physics -> Ocean current / Tidal current (Current direction/Current speed)
Ocean physics -> Tide / Tide level / Water level
Ocean physics -> Surface topography
Ocean physics -> Sea ice
Ocean physics -> Tsunami
Ocean physics -> Simulation / Assimilation re-analysis
Ocean physics -> Transparency / Turbidity
Ocean chemistry -> Salinity
Ocean chemistry -> Dissolved oxygen
Ocean chemistry -> Nutrients
Ocean chemistry -> pH
Ocean chemistry -> Trace elements
Ocean chemistry -> Organic matter
Ocean chemistry -> Radioactive isotope
Ocean chemistry -> Radioactive Substance
Ocean chemistry -> Carbon dioxide
Ocean chemistry -> Methane
Ocean chemistry -> Total carbonic acid
Ocean chemistry -> Alkalinity
Ocean chemistry -> Simulation / Assimilation re-analysis
Ocean environment -> Others
Ocean biology / Ocean ecology -> Others
Topography / Geology / Geophysics -> Bathymetry
Topography / Geology / Geophysics -> Topography
Topography / Geology / Geophysics -> Seabed morphology
Topography / Geology / Geophysics -> Stratigraphy
Topography / Geology / Geophysics -> Geological structure
Topography / Geology / Geophysics -> Marine sediments
Topography / Geology / Geophysics -> Tsunami