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Title Transcription
アガノガワ ノ エンスイ ソジョウ
Title Alternative (English)
Saline water intrusion into the Aganogawa River
File
language
jpn
Author
Tateishi, Masaaki
Honda, Yu
Tokuoka, Takao
Fukita, Ayumi
Matsuda, Shigeo
Anma, Kei
Nishimura, Kiyokazu
Description
Salt water intrusion into the Aganogawa River was measured on November 19 and 20, 2004, and October 16 and 17, 2005 at spring tide, using mainly a SC-3 acoustic profiling system and water quality meter called TPM CLOROTEC. Velocity, direction and depth were also measured at two stations in the latter observation. SC-3 acoustic profiling system is an improved 200 kHz precision echosounder, that records the distribution of the halocline and the thickness of the saltwater layer as profile records. TPM CLOROTEC is a towing-type water quality meter, and real time data of depth, temperature, salinity, turbidity and chlorophyll-a can be obtained on the ship. These two instruments are very useful to recognize time-space ditiribution and changes of the halocline. At the Aganogawa River saline intrusion has been known to reach up to 14 km from the river mouth, and has been wrongly interpreted to the cause of the Niigata Minamata Disease. Our observation has successfully visualized the bebavior of salt water intrusion into the Aganogawa River
Subject
Aganogawa River
saline wedge
echo-sounding survey
Niigata Minamata Disease
Journal Title
Laguna : 汽水域研究
Volume
13
Start Page
43
End Page
62
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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