Fine-scale autonomous survey of dissolved oxygen in Macquarie Harbour, west coast Tasmania

Select | Print


Wild-Allen, Karen; Revill, Andy ORCID ID icon; Andrewartha, John; Forcey, Karl; Gregor, Rob


2018-02-20


Conference Material


2nd Annual Active Integrated Matter Conference, Melbourne, 20-22 February 2018


00-00


Model simulations and time series observations of dissolve oxygen suggest broad-scale and persistent oxygen depletion in sub-surface waters of Macquarie Harbour, west coast Tasmania. The harbour hosts a successful salmon aquaculture industry, is popular with recreational fishers, has numerous tourism ventures and a portion is recognised as world heritage status. Model simulations provide a hypothesis of current conditions and a short term forecast of water quality to inform managers and other users, however the accuracy of the model is unknown out-with a few isolated observing locations. This paper describes the deployment of an autonomous underwater vehicle (AUV) with a payload of water quality sensors to achieve a series of continuous subsurface survey transects. The observations confirm the broad-scale spatial depletion of dissolved oxygen in subsurface layers and strong gradients in near surface layers, as simulated by the model. The AUV designed at CSIRO and known as Starbug X was demonstrated as a unique and versatile platform to achieve these observations; visualisation and analysis of the 4 dimensional time and space observations and model output was achieved in Matlab. In future studies we envisage animal oceanographers (for example turtles and/or fish) will be equipped with sensors and widely deployed to collect similar observations.


CSIRO


Physical Oceanography


Funding Body NameProject/Grant ID
Fisheries Research & Development Corporation2016-067


EP186183


Conference Poster


English


Wild-Allen, Karen; Revill, Andy; Andrewartha, John; Forcey, Karl; Gregor, Rob. Fine-scale autonomous survey of dissolved oxygen in Macquarie Harbour, west coast Tasmania. In: 2nd Annual Active Integrated Matter Conference; 20-22 February 2018; Melbourne. CSIRO; 2018. 00-00. http://hdl.handle.net/102.100.100/376106?index=1



Loading citation data...

Citation counts
(Requires subscription to view)