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Assessing Hydrocarbon presence in the waters of Port au Port bay, Newfoundland and Labrador, for AUV oil spill delineation tests

Citation

Hwang, J and Bose, N and Robinson, B and Nguyen, H, Assessing Hydrocarbon presence in the waters of Port au Port bay, Newfoundland and Labrador, for AUV oil spill delineation tests, The Journal of Ocean Technology, 15, (3) pp. 102-112. ISSN 1718-3200 (2020) [Refereed Article]


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Copyright Statement

Copyright 2020 Journal of Ocean Technology

Abstract

The waters adjacent to the Port au Port Peninsula, in Port au Port Bay, Newfoundland and Labrador, are known to be subject to release of hydrocarbons from natural oil seeps and old abandoned oil wells. An investigation was done to determine whether there were sufficient oil compounds present for planned autonomous underwater vehicle (AUV) test missions to develop adaptive sampling algorithms to delineate oil spills. Fluorometers were used in-situ to measure oil concentrations. Oil-and-water samples were taken at selected waypoints for chemical analysis in the laboratory to validate the sensor measurements and to provide a ground truth. Only one of the fluorometers was found to have a minimum detection level that was capable of sensing the hydrocarbons in the water column. The water sample results indicated hydrocarbon levels up to almost 30 ppm in the east side of the bay, just to the west of Shoal Point, but no detectable levels on the west side of the bay. It was concluded that it would be possible to operate an AUV on a planned fixed mission with a pre-programmed search path and record the levels of signal detected from fluorometers or other sensors. However, it would be difficult to implement an adaptive mission in this case because of the low levels of sensor signals resulting from the low concentrations of hydrocarbon present.

Item Details

Item Type:Refereed Article
Keywords:autonomous underwater vehicle (AUV), adaptive sampling, oil spill delineation, gas chromatography flame ionization detector, gas chromatography mass spectrometry, total petroleum hydrocarbon
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Special vehicles
Objective Division:Defence
Objective Group:Defence
Objective Field:Intelligence, surveillance and space
UTAS Author:Hwang, J (Miss Jimin Hwang)
UTAS Author:Bose, N (Professor Neil Bose)
UTAS Author:Nguyen, H (Dr Hung Nguyen)
ID Code:141999
Year Published:2020
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2020-12-08
Last Modified:2021-06-18
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