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Climate change is threatening an uncalculated number of archaeological sites globally, totaling perhaps hundreds of thousands of culturally and paleoenvironmentally significant resources. As with all archaeological sites, they provide evidence of humanity’s past and help us understand our place in the present world. Coastal sites, clustered at the water’s edge, are already experiencing some of the most dramatic damage due to anthropogenic climate change, and the situation is predicted to worsen in the future. In the face of catastrophic loss, organizations around the world are developing new ways of working with this threatened coastal resource. This paper uses three examples from Scotland, Florida, and Maine to highlight how new partnerships and citizen science approaches are building communities of practice to better manage threatened coastal heritage. It compares methods on either side of the Atlantic and highlights challenges and solutions. The approaches are applicable to the increasing number of heritage sites everywhere at risk from climate change; the study of coastal sites thus helps society prepare for climate change impacts to heritage worldwide.

Much ofthe UK'spotentialarchaeologicalresourceisunder threat from coastalerosion.Undiscovered sites are oftenlost ordamaged by erosion before rescue excavation can take place.Thisproject tested the use of multispectral remote sensing for detecting archaeological features in mobile sanddominated systems, which are common on the western and northern coasts and islands around the UK. Airborne multispectral data were collected for a number of coastal areas on the Islands of Coll and Tiree. A range of data processing techniques were used to enhance the data for visualinterpretation, whichhighlighted potentialfeaturesfor furtherinspectioninthe field.Featuresthat were successfully detected by the methods used included enclosures, cairns, relict field boundaries and cultivation/soil marks, buried walls and buried structures. Multispectral remote sensing provides an extremely useful tool which can be used to significantly enhance the archaeological record, although further workisrequiredtotest thetechniquesunderarange ofconditions

Abstract:Heritage sites are constantly changing due to natural processes, and this change can happen fastest at the coast. Much legislation has been enacted to protect sites of historic interest, but these do not protect sites from natural processes. Change is already happening, and climate change predictions suggest that the pace will accelerate in the future. Instead of seeing the potential destruction of heritage sites as a disaster, we should embrace the opportunity that they can provide for us to learn about the past and to plan for the future. Heritage laws often enshrine a policy of preservation in situ, meaning that our most spectacular sites are preserved in a state of equilibrium, with a default position of no permitted intervention. However, the options for threatened coastal sites mirror those of shoreline management plans, which usually recommend either the construction of a coastal defence or, more likely, a strategy of managed retreat, where erosion is allowed to take its course after appropriate mitigations strategies have been enacted. Managed retreat can lead to a range of research projects, some of which would not normally be possible at similar, unthreatened and legally protected monuments. Such research also has the potential to involve members of the public, who can help in the discovery process, and cascade what they have learned through their communities. Information shared can be about the heritage site itself, including how communities in the past coped at times of climatic stress; and also about the processes that are now threatening the monument, thus helping teach about present day climate change.

The Intergovernmental Panel on Climate Change has documented wide-ranging changes to the world's coasts and oceans, with significant further change predicted. Impacts on coastal and underwater heritage sites, however, remain relatively poorly understood. The authors draw on 30 years of research into coastal and underwater archaeological sites to highlight some of the interrelated processes of deterioration and damage. Emphasising the need for closer collaboration between, on one hand, archaeologists and cultural resource managers and, on the other, climate and marine scientists, this article also discusses research from other disciplines that informs understanding of the complexity of the interaction of natural and anthropogenic processes and their impacts on cultural heritage.

Abstract-On the two hundredth anniversary of the Kildonan clearances, when people were forcibly removed from their homes, the Timespan Heritage centre has created a program of community centred work aimed at challenging pre conceptions and encouraging reflection on this important historical process. This paper explores the innovative ways in which virtual world technology has facilitated community engagement, enhanced visualisation and encouraged reflection as part of this program.An installation where users navigate through a reconstruction of pre clearance Caen township is controlled through natural gestures and presented on a 300 inch six megapixel screen. This environment allows users to experience the past in new ways. The platform has value as an effective way for an educator, artist or hobbyist to create large scale virtual environments using off the shelf hardware and open source software. The result is an exhibit that also serves as a platform for experimentation into innovative ways of community co-creation and co-curation.

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