Abstract
High resolution panoramic imagery has been systematically captured at the A83 Rest and be Thankful landslide site in Scotland since 2016. This paper describes the derivation of quantitative data from the imagery from two of the stations from which panoramic imagery has been captured. The high-resolution panoramic imagery has been supplemented by earlier lower resolution panoramic and non-panoramic imagery where available to extend the time period that the data covers. The data capture process involves measuring reference areas and areas of apparent instability on each image in the time series. Normalised areas affected are then plotted over time as percentages. The data presented here provide significant and valuable insight into the extent and temporal change in instability on the hillside over the past 15 years and 11 years for the northern and southern parts of the slope, respectively. The data represent percentage areas of apparent instability and show relative change over time. The changes measured and reported confirm other observations that the extent of instability within the last decade has increased significantly and the panoramic imagery monitoring forms an integral part of the overall monitoring and inspection strategy.
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