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FORINFRA-Nasj.sats. forskn.infrastrukt

Arctic ABC Development

Alternativ tittel: Arctic ABC Infrastruktur utvikling

Tildelt: kr 20,5 mill.

Arctic ABC Development har utviklet autonome observasjons-plattformer som kan fryses inn i både drivis og fastis i Arktis. Instrumenteringen på plattformene inkluderer akustikk og optiske instrumenter, i tillegg til standard oseanografiske sensorer. De forskjellige sensorene er fordelt på fem ulike typer plattformer som alle kan operere uavhengig av hverandre. Data fra de fleste sensorene er tilgjengelig i sann-tid ved at de blir overført via satellitt. Data fra ekkolodd og hyper spektral avbilder er for store til å kunne sendes via satellitt, noe som har medført at det er utviklet eget eget system for såkalt data harvesting ved hjelp av droner, fly eller skip. Plattformene har til nå vært i bruk både i fastis i Canada og Norge samt i polhavet. Foreløpig siste utsetting ble gjort i forbindelsen med den store MOSAIC kampanjen i Polhavet i 2020.

Arctic ABC Development will develop and successfully deploy a minimum of six under-ice tethered observatories (ITO) that are to be deployed in the Arctic Ocean (See figure 1). The ITO will provide optical and acoustic data from the Arctic Ocean drift ice ecosystem, including during the polar night. Estimated operation time for each deployment is expected to be between 6 and 12 months, depending on ice extend and drift speed. The platforms will have a satellite communication ability that allows for real-time data transfer and monitoring of its performance and location. Data acquisition include optical characterisation of the ice surface and biota using both newly developed and patented underwater hyperspectral imaging (UHI) techniques and more traditional HD cameras, bioacoustics, physical (temperature, salinity and light) and biochemical (chi a, nutrients) characterisation of the water column in the upper 100m, as well as properties of the ice itself (drift, thickness, temperature etc). This novel technological platform will provide crucial data both for Arctic ABC and support future scientific explorations, monitoring and management purposes of the Central Arctic Ocean. Currently data on the physical parameters of the arctic system are collected with much higher temporal and spatial resolution than biological ones. The proposed autonomous system aims to address that imbalance. Together with its partners, Arctic ABC Development will focus on the development of fundamental knowledge on fault-tolerant and autonomous mobile sensor platforms in ice and water through multidisciplinary theoretical, numerical and experimental research within the fields of marine biology, hydrodynamics, arctic technology, navigation and automated control systems. In addition, reliable energy supply using self-charging sea water battery technology will be studied.

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FORINFRA-Nasj.sats. forskn.infrastrukt