DEVELOPMENT OF AN EFFICIENT METHOD FOR ESTIMATION OF TOTAL HYDRGEN SULFIDE IN A DREDGED TRENCH OF TOKYO BAY
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- ICHIOKA Shiho
- 横浜国立大学大学院 工学府社会空間システム学専攻
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- SASAKI Jun
- 横浜国立大学 大学院工学研究院システムの創生部門
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- YOSHIMOTO Yuya
- 横浜国立大学大学院 工学府社会空間システム学専攻
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- MATSUZAKA Shoichi
- 国土交通省関東地方整備局横浜港湾空港技術調査事務所東京湾再生センター環境情報課
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- ARIJI Ryuichi
- 国土交通省関東地方整備局横浜港湾空港技術調査事務所東京湾再生センター
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- MOROHOSHI Kazunobu
- 国土交通省関東地方整備局横浜港湾空港技術調査事務所
Bibliographic Information
- Other Title
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- 東京湾奥部の浚渫窪地における硫化物量の簡易推定手法の提案
Abstract
Blue tides, upwelling of anoxic water, are a major environmental problem in Tokyo Bay because they cause mortality of benthic animals in shallows and tidal flats. There are three types of sources of anoxic water containing hydrogen sulfide: dredged trenches, flat bottom at the head of the bay, and navigation channels. To consider remedies for this problem, it is important to clarify each contribution to occurrence of blue tide. It is, however, difficult because of the lack of time series data for the total amount of hydrogen sulfide in each of water. Thus, in the present study, focusing on dredged trenches as a first step, we developed a simple and reliable methodology for the estimation of the total amount of hydrogen sulfide. We utilized the data of pH and ORP collected using a water quality sensor, which have a good correlation with the concentration of hydrogen sulfide. Moreover, we found that the accuracy of estimation is quite improved if we use information of hydrogen sulfide concentration at the bottom. The proposed method is rather simple and very effective because those data are usually available in conventional monitoring.
Journal
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- PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN
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PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN 24 669-674, 2008
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390001205204445824
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- NII Article ID
- 130003950895
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- ISSN
- 18848265
- 09127348
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed