Methods and tools for analysis and visualisation of oceanographic and acoustic measurements from the HiAOOS mooring network in the Arctic Ocean

The EU-funded project High Arctic Ocean Observation System (HiAOOS) aims to implement a large-scale network in the Nansen and Amundsen Basin, including four multidisciplinary moorings in the deep basins and two experimental moorings north of Svalbard. Oceanographic sensors provide measurements of temperature, salinity, dissolved oxygen, ocean currents, and sea ice while acoustic instruments measuring ocean sound facilitate for acoustic thermometry, underwater geopositioning, detection of underwater earthquakes, and monitoring of marine mammals and human activities.

Based on data collections from the earlier projects (CAATEX, INTAROS) and new observations from HiAOOS, a variety of methods and tools is developed for analysis of continuous, year-round mooring measurements. New tools for data processing and integrative analysis of ocean and sea ice measurements allow for ingestion of auxiliary products to explore data, generate statistics, and provide advanced visualisations. New methods and tools are developed for detection of earthquakes signatures and automatic identification of sound sources in passive acoustic recordings to understand the environmental impacts and contribution from human activities. New methods for inversions of long-range acoustic receptions to ocean temperature are developed for ocean thermometry. New techniques for detection of low frequency acoustic signals are employed to test ranging and localisation for underwater geopositioning. Methodology for validation of ocean-ice reanalysis using acoustic receptions is established. Selected data and methods are ingested into Blue Insight, a digital modular platform for processing, visualization and sharing of ocean information. The poster will present the overview of methods and tools developed in HiAOOS for enhanced use of new observations.