Marine debris mapping and geo-environmental study

Fiscal Year

2015

Title

Marine debris mapping and geo-environmental study

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. Analysis of marine ecosystem change
Representative personYoshihiro Fujiwara
OrganizationJapan Agency for Marine Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team

Research Information

Period and Interval
2015/06/12 - 2015/06/12
4 times during the Jun.2015 to Feb.2016
Research Area
Otsuchi Bay, Ofunato Bay, Hirota Bay and Onagawa Bay
Research Point Table
Polygon
NameHirota Bay
Coordinates39.01,141.605/39.01,141.7/38.93,141.7/38.93,141.605
NameOfunato Bay
Coordinates39.07,141.705/39.002,141.705/39.002,141.805/39.07,141.805
NameOtuchi Bay
Coordinates39.37,141.887/39.37,141.987/39.325,141.987/39.325,141.887
NameOnagawa Bay
Coordinates38.45,141.44/38.39,141.44/38.39,141.53/38.45,141.53
Category
Field survey
Overview
Our survey purpose is marine debris mapping and geo-environmental mapping (with bottom sampling, benthos sampling and sub bottom video sampling). We use 1)Side scan sonar, 2)Multi beam echo sounder, 3)Sub bottom profiler, 4)ROV and 5)Bottom sampler (Columnar and Grab) for this investigation.

Investigation Item and Data Acquisition

Investigation ItemData Acquisition
Submarine topographyIrregularity bottom surface Map, Bathymetry Map
Sub bottom profilerSubmarine stratigraphy
Bottom sedimentGravel size, Tsunami origin sediment, water content, sea debris observation by ROV
BenthosDistribution of benthos and Species composition

Reference

Related Observation Result
FY2015 Marine debris mapping and geo-environmental study

Person in charge of Investigation

Representative personIzumi Sakamoto
OrganizationTokai University

Keywords

Fiscal Year2015
OrganizationTokai University
CategoryField survey
Research AreaSouth Sanriku
DisciplineOcean physics -> Tsunami
Ocean chemistry -> Trace elements
Ocean chemistry -> Radioactive isotope
Ocean environment -> Heavy metals
Ocean environment -> Flotsam
Ocean environment -> Sediment
Ocean biology / Ocean ecology -> Sea algae
Ocean biology / Ocean ecology -> Mollusks
Ocean biology / Ocean ecology -> Seaweed beds / Tidal flats distribution
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 -> Bottom sediment
Topography / Geology / Geophysics -> Marine sediments
Topography / Geology / Geophysics -> Rock
Topography / Geology / Geophysics -> Tsunami