This work package will be focused on the preparation of a suitable and operational monitoring strategy. It will also include sample and environmental parameters collection from the dumpsites, sample analysis as well as data management and assimilation into the models developed. Equipment tests and selection will be performed within WP3 Survey
Task 4.1 Moored Station
A moored station collecting oceanographic data affecting local mixing and sediment erosion processes will be deployed in the most hydrodynamically important area for the dumpsites region already during the test stage, built from existing equipment of IOPAS and IORAS. This will provide data for selection of best sensors and locations for the moored station in the later stage.
Data collection will start already in month 9, supplementing the data collected within the test period.
Once monitoring areas are established by WP3 Survey, possible repositioning of the moored station to collect oceanographic data influencing monitored sites will be performed. Throughout the project, several cruises are planned which will include data readout, maintenance and deployments of mooring in various areas.
Task 4.2 Environmental data collection
Once the key areas have been identified and surveyed by AUV, ROV and ship-based missions will commence. Missions will be performed from the research vessels participating in the project and from smaller boats, the latter either supplied by IORAS in the frame of national contribution, or hired from the project budget. Small craft handling training will be performed for IOPAS scientists, to enhance their possibilities for operation on hired boats.
During the cruises, oceanographic and chemistry data will be collected, by means of ship based/towed sensors, and AUV based sensors. Key environmental variables will be measured, including oxygen concentration, bottom current speed and direction, turbulence, temperature and salinity. ROVs equipped with video solutions will be used to create pictures of sea bottom for habitat damage evaluation.
Sampling missions include the use of ROV for sampling sediments in the vicinity of chemical munitions. Collected samples will be stored, and if additional funds will become available, will be a subject of detailed chemical contaminant analysis.
For selected samples, laboratory analyses of Arsenic speciation will be performed. Milestones of this stage will include: a study on portable methods suitability for CWA monitoring, pollution distribution near selected objects, and an input into Environmental Risk Assessment calculation.
Starting from the first year, two fish sampling campaigns will be conducted, if possible, connected to AUV data on objects location. Fish health studies will be performed, to assess CWA effect on biota. The data obtained will then be used for WP5 Environmental Risk Assessment.
Task 4.4 Data center
Simultaneously, a data center will be constructed, and procedures established for data collection and sharing between different work packages.
Deliverables of this part are the procedures for data assimilation and the database for collection of monitoring data.
Once the data center is operational, it will receive data from both moored and mobile parts of the monitoring network, providing it for assimilation in WP5.
This WP constitutes 30% of overall project success.