Seawater intake

Seawater intake pipe

High-quality seawater for our research is taken from a depth of about 20 m.  Robust intake pipe has been installed through a challenging contruction project.  The details of the costruction are described here (in Japanese).

月刊推進技術 Vol.36 No.1(2022年1月号)に掲載


Logged temperature data

Logger: JFE Advantech DEFI2-T
Δt: 5 min
   ① Outside port at 10m dep: Aug 15, 2018 - Aug 8, 2019
   ② Outside port at 15 m dep: Aug 15, 2018 - Aug 8, 2019
   ③ Intake facility receiving tank: May 17, 2018 -
       (Temperature at the receiving tank corresponds apploximately to that around the intake mouth)
   ④ Intake facility roof tank: May 17, 2018 -
   ⑤ OMSS roof tank (filtered): May 17, 2018 -
   ⑥ OMSS roof tank (non-filtered): May 17, 2018 -
   ⑦ Outdoor tank area (filtered): May 17, 2018 -
   ⑧ Outdoor tank area (non-filtered): Jun 13, 2018 -

Example: Characteristics of the temperature of the seawater supply in summertime

If you need the original or latest data, please contact us via email (, Feedback page, or oral communication.


Realtime monitoring

Temp, Cond, DO, Turb, Chl, and FDOM monitoring using YSI EXO2 at the OMSS outdoor tank area (filtered seawater).  pH sensor is NOT installed since it is quite hard to obtain reliable and stable pH data.

Seawater quality test

Seawater quality test has been carried out by the Nansei Environmental Laboratory Co., Ltd.

Parameters: pH, COD, Total Nitrogen, Total Phosphorus, Nitrate (NO3-), Nitrite (NO2-), Phosphate (PO43-), SS, Chromaticity, and Total Coliform