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Irish Sea Marine Aggregate Initiative (IMAGIN) Technical Synthesis Report
Sutton, G (ed)
Sutton, G (ed)
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2008
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Marine Institute
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The Irish Sea Marine Aggregates Initiative (IMAGIN) is a collaborative project between Ireland and Wales focused on the sustainable management of marine aggregate resources. IMAGIN was a 2-year project with a total budget of €1.1 million. IMAGIN was part funded (66%) under the Ireland/Wales Inter Regional (INTERREG) IIIA Community Initiative Programme 2000-2006. The remaining project budget was met by contributions from partner organisations (19%) and aggregate companies – CEMEX, Lagan Ltd., Kilsaran Concrete and Roadstone Ltd. (15%).
The IMAGIN grouping was a collaborative partnership comprising experts in Ireland and Wales from 3rd level Institutes, State agencies and industry. The grouping included the Coastal and Marine Resources Centre – University College Cork, Marine Institute, Geological Survey of Ireland, Geoscience Wales and representatives from the aggregate companies.
The overall aim of the IMAGIN project is to facilitate the evolution of a strategic framework within which the exploitation of marine aggregate resources from the Irish Sea may be sustainably managed with minimum risk of impact on marine and coastal environments, ecosystems and other marine users. IMAGIN was structured around a series of work packages, each focusing on the different aspects of the marine aggregate question.
Marine aggregates can be defined as sedimentary material - sand or gravel of various grain and class sizes (grades). Extraction of marine aggregates typically involves dredging of the deposit to remove it from the seabed. Aggregates may be screened at sea before being transported to a port or wharf facility for unloading and then further processing, if required, and subsequent transportation. In common with terrestrial aggregates, sands and gravels sourced from the seabed are an important economic resource, which can contribute to the development and maintenance of infrastructure, e.g. buildings, roads and bridges. Marine aggregates are also used for beach nourishment and coastal defence purposes, the demands for which have become more pressing when set against the predicted implications of climate change, sea level rise and associated effects on low lying coastal areas. A number of countries have sought to meet the demand for aggregates by utilising sources from the seabed to replace or complement terrestrial sources. Belgium, the Netherlands and the United Kingdom are primary examples of countries within Europe that have a long established practice of marine aggregate extraction, providing an alternative to sole reliance on terrestrial sources.
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Sutton, G. (ed), "Irish Sea Marine Aggregate Initiative (IMAGIN) Technical Synthesis Report", Marine Environment and Health Series No. 36, Marine Institute 2008