In situ measurement of time-series two dimensional O2 distributions at sediment-water interface using a planar O2 optode system connected with a submarine cable

• Published in: 2007 Symposium on Underwater Technology and Workshop on Scientific Use of Submarine Cables and Related Technologies pp. 367 - 370
• Main Authors: Oguri, K., Kitazato, H., Glud, R.N., Stahl, H., Wenzhofer, F., Asakawa, K., Iwase, R., Sakai, S., Nomaki, H., Fujikura, K.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.04.2007
• Subjects: Charge-coupled image sensors; Instruments; Marine technology; Monitoring; Phosphorescence; Power supplies; Remotely operated vehicles; Sea measurements; Sensor phenomena and characterization; Underwater cables
• DOI: 10.1109/UT.2007.370814
• ISBN: 9781424412075; 1424412072

The first long time monitoring of O 2 dynamics at sediment-water interface (SWI) was conducted using with a newly developed planar O 2 optode system for in situ measurement. The monitoring was carried out connecting the optode system with Hatsushima permanent station with a 100 meter-long extension cable under supporting by the operation of ROV Hyper-dolphin. The monitoring was successfully carried out for 113.3 hours. During the experiment, 3,141 two dimensional O 2 profiles and the corresponding pseudo-grayscale images across SWI were obtained, respectively. From the results, further understanding of new insights on dynamic interactions between fauna activities and environmental changes are expected.