Temporal variation in dissolved oxygen in the bottom layer of Tokyo Bay observed by the monitoring post at Chiba Light.
Japan Coast Guard has carried out continuous monitoring of sea water, sea current, and wind at the innermost of Tokyo Bay using the monitoring post at Chiba Light from 2003. We report temporal variations in dissolved oxygen (DO) in the bottom layer at a depth of 10 m from 2003 to 2015 (except for 2011 and 2013). Moreover, in order to estimate water quality improvements at Tokyo Bay, we removed from the DO values the influences of the submerging surface water caused by dominating south winds, which is one of the natural phenomena affecting the temporal variations. The compensated DO values remained at the same level during the observation period from 2003 to 2015, which suggests no significant improvements of water quality at Tokyo Bay.
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| Main Authors: | , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
2017
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| Online Access: | http://hdl.handle.net/1834/15513 |
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