Fiscal Year
2012
Title
Acoustic mapping for the marine environment and ecosystem
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 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 Interval2013/03/09 - 2013/03/18
Research Area
CategoryResearch Cruise
OverviewWe obtained the acoustic survey to back scattaring data and sub-surface structure using a side scan sonar and sub-bottom profiler off Otsuti and off northern area of Miyagi prefecture. We also set up the Lander system for monitoring environmental data off Otsuti, and carried out the aoucstic slant range mesuament to settle the landing position.
Overview of the Observation
Research Point Table
| Polygon | | Name | Area1:Off the coast of Iwate(: 50 m ~ 300 m water depth) |
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| Coordinates | 39,142.08333/39,142.5/39.66667,142.5/39.66667,142.08333 |
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| Remarks | Vertexes of the polygon |
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| Name | Area2:Off the coast of Miyagi (: 50 m ~ 300 m water depth) |
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| Coordinates | 38.875,142/38.875,141.875/39.04167,142/39.04167,142.08333 |
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| Remarks | Vertexes of the polygon |
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Research Point Map & Track Chart Map & Point List
Results and Future PlanWe could obtain enough quality data of a side scan sonar and sub-bottom profiler. We will carry out the data analysis to make a distribution map of seabottom materials and Tsunami debris.
Investigation Item and Data Acquisition
| Investigation Item | Data Acquisition |
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| Sub-bottom profiling | Sub surface structure |
| Seafloor exploration | Seafloor back scattering intensity data |
Reference
Related Observation Plan
Related Observation Data
Person in charge of Investigation
| Representative person | Takafumi Kasaya |
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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 | 2012 |
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| Organization | Japan Agency for Marine-Earth Science and Technology |
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| Category | Research Cruise |
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| Research Area | South Sanriku |
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| Discipline | Topography / Geology / Geophysics -> Seabed morphology
Topography / Geology / Geophysics -> Stratigraphy
Topography / Geology / Geophysics -> Geological structure
Topography / Geology / Geophysics -> Bottom sediment
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