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Title Transcription
オオハシガワ ヲ ソジョウ スル ヒンサンソ スイカイ ノ ジツジョウ ト シンジコ ニ オヨボス エイキョウ
Title Alternative (English)
Actual Situation of Movement of Anoxic Water through the Ohashi River and Its Effects on Lake Shinji
File
language
jpn
Author
Fujii, Tomoyasu
Moriwaki, Shimpei
Okusa, Setsuo
Description
It is well known that the highly saline water and anoxic water mass in the lower layer of Lake Nakaumi frequently creep up towards the Ohashi River, and this water sometimes directly flow into Lake Shinji through the Ohashi River(fujii, 1996, 1998), but the process of the encroachment of anoxic water mass through the Ohashi River is unknown in detail. Recently, many filed experiment are carried out as a countermeasure of anoxic water extinction in the Ohashi River, but little is known about the effect of countermeasure. As a beginning of the verification on its effects, we calculated the oxygen deficit amount based on observation results. Therefore, we found that the oxygen deficit amount was 242 kg in the period of less than DO 1.5 mg・l.1, and dissolved oxygen concentration deviation flux changed in the range of from 0 to 50 g・sec.1. Consequently, it was found that the supply of oxygen was necessary for several 10 g・sec.1 to satisfy the inhabiting condition of the corbicula japonica PRIME.
Subject
tidal river
saline water intrusion
oxygen deficit amount
Journal Title
Laguna : 汽水域研究
Volume
13
Start Page
1
End Page
7
ISSN
21852995
Published Date
2006-06
NCID
AN10439529
Publisher
島根大学汽水域研究センター
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Estuary Research Center
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