Tsunami marine debris mapping and sedimentrogical study

Fiscal Year

2013

Title

Tsunami marine debris mapping and sedimentrogical 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. 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

Research Information

Period and Interval
2013/06/23 - 2013/11/30
2times during the period
Research Area
Hirota bay, Ofunato bay, Okirai bay and Toni bay
0051_P01_map01.pdf
Category
Field survey
Overview
Our survey purpose is Tsunami marine debris Maping and make clear the record of tsunami activity using tsunami origine sediment.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 origine sediment, Water content, Tsunami marine debris observation by ROV
BenthosDistribution of benthos by ROV, Species composition

Reference

Related Observation Result
FY2013 Tsunami marine debris mapping and sedimentrogical study

Person in charge of Investigation

Representative personIzumi Sakamoto
OrganizationTokai University
DepartmentDepertment of Marine and Earth Science

Keywords

Fiscal Year2013
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 -> 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