Abstract
BackgroundGradual changes in weathering rates and mechanisms are the barely visible impacts of climate change on cultural heritage. Long-term monitoring of built and archaeological heritage is therefore necessary to ascertain the nature of loss due to slow onset effects. During research at the Dublin Institute of Technology in 2011 a Legacy Indicator Tool (LegIT) for measuring the weathering of stone surfaces into the far future was developed by the author and piloted at five National Monuments in Ireland. While it is too soon to evaluate the tool in relation to long term climate change trends, this article considers the data from 5 years of exposure and provides an early assessment of the pilot study’s design and implementation.ResultsMeasurements for colour, surface roughness, weight, and dimensions from the 5 year exposure of the LegIT were analysed. Comparisons between sites allows assessment of surface change under different atmospheric conditions. The indications for regional and localized weathering trends will aid managers in understanding risks and setting priorities—both for further monitoring and for conservation interventions.ConclusionsResults from the 5 year pilot trial of the LegIT has allowed preliminary evaluation of its potential as a long term indicator for surface weathering. Recommendations have been made for modifications to the design, manufacture and implementation of the tool. The future aim is to compare results over time at each site, building a picture of surface weathering processes in relation to regional climatic change.
Highlights
The catastrophic impacts of climate change on the historic environment, such as increased flooding and coastal erosion, are increasingly widely recognised
During research at the Dublin Institute of Technology in 2011 a Legacy Indicator Tool (LegIT) for measuring the weathering of stone surfaces into the far future was developed by the author and piloted at five National Monuments in Ireland
While it is too soon to evaluate the tool in relation to long term climate change trends, this article considers the data from 5 years of exposure and provides an early assessment of the pilot study
Summary
The catastrophic impacts of climate change on the historic environment, such as increased flooding and coastal erosion, are increasingly widely recognised. Monitoring of outdoor heritage artefacts and structures is necessary to ascertain the rate and scale of loss due to weathering. The nature (dominant mechanisms, relative severity etc.) of surface weathering at the site, and b. Whether those effects alter over time with changes in the climate. Gradual changes in weathering rates and mechanisms are the barely visible impacts of climate change on cultural heritage. Long-term monitoring of built and archaeological heritage is necessary to ascertain the nature of loss due to slow onset effects. While it is too soon to evaluate the tool in relation to long term climate change trends, this article considers the data from 5 years of exposure and provides an early assessment of the pilot study’s design and implementation
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