Fiscal Year
2015
Title
Survey of debris distribution in Onagawa Bay
Project and Theme
Project 1. Study on ecological succession of fisheries ground
Representative Organization: Tohoku University
Theme1. Environmental monitoring in coastal sea areas of Miyagi Prefecture| Representative person | Yoshinari Endo |
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| Organization | Tohoku University |
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| Department | Graduate School of Agricultural Science |
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Research InformationPeriod and Interval2015/04/01 - 2016/03/31
once a year
Research Area
Onagawa Bay
CategoryField survey
OverviewA change in the distribution situation of debris in Onagawa Bay were surveied using echo souding machine.
Overview of the Observation
Results and Future PlanIt increased in the measurement impossible areas due to the increase of shipping compared with a last investigation of 2013. The place where becomes shallow with several tens of cm in the water depth, and also agreed with a quay rise phenomenon at the inner part of Onagawa bay.
The 28 debris-like objects more than 1m in height were discovered in the sea bottom, and the number decreased compared with the data of 3 years ago. This decrease was considered according to the outflow of woods and subsidence of the concrete block piece.
Reference
Person in charge of Investigation
| Representative person | Motoyuki Hara |
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| Organization | Tohoku University |
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| Department | Graduate School of Agricultural Science |
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| Fiscal Year | 2015 |
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| Organization | Tohoku University |
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| Category | Field survey |
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| Research Area | South Sanriku |
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| Discipline | Topography / Geology / Geophysics -> Others
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