Autonomous Online System (AOS) Deployed in Remote Location
David Barber, Centre for Earth Observation Science, University of Manitoba, deploys Nortek Aquadopp Profiler and AOS in Arctic.
Researchers at University of Manitoba's Earth Observation Science lab have an important, and cold, job. They are part of a team tasked with understanding how large chunks of ice in the Canadian Arctic move.
Although Canada is losing a lot of sea ice in the northern hemisphere (both aerial extent and thickness), there still remains significant ice features that can pose a hazard to development activities in the Southern Beaufort Sea. The project will integrate a team of investigators to detect, understand, and eventually to be able to model the distribution and motion of hazardous ice features along the NW flank of the Canadian Arctic Archipelago and their movement over significant oil and gas exploration licenses in the Southern Beaufort Sea.
In April 2012, the team deployed a Nortek 600 kHz Aquadopp Profiler and several meteorological instruments in multi-year ice about 80 miles west of Banks Island, to collect ocean current profiles below the ice, and local wind data above the ice. The ice was about 7 m thick and a deep hole was augured into the ice to deploy the Aquadopp Profiler in the water.
Because the ice is so thick, and the observation site so remote, there is little chance of recovering the Aquadopp Profiler at the end of the project. This necessitated real-time data telemetry of ocean current measurements from one of the most hostile and remote places on the Earth. Nortek partnered with Manitoba researchers to provide the Nortek Autonomous Online System (AOS). AOS is a turn-key Iridium telemetry solution for the Nortek ADCP systems. The AOS Iridium satellite modem communicates data to the AOS-server, and the AOS-server stores and provides data for presentation on the client website. The data volume and cost is kept to a minimum by focusing on vital data subsets. Full current and wave datasets are stored in the instrument memory. The AOS webpage displays a wide range of telemetered parameters, including GPS postion of the system. The combination of these data sets will allow Manitoba researchers to measure the real-time motion of the ice patch and the current profiles below.
Greg McCullough deploys the Aquadopp Profiler and AOS.
AOS display showing the drift of the ice between April and June 2012.
AOS display showing the current speed and direction (top) and water temperature (bottom).