## 6 Results for AOI-2  
A total of 56,568 PSs has been measured in AOI-2 (Figure 17a). Most of the points are distributed over the urban areas, outside of which the data density drastically decreases. Although this reduced the possibility to detect movements over the central section of the mine, it was still possible to make observations in its northern and south-western extents and in the TSF area. Most of AOI-2, including the urban area of Navan, is unaffected by significant land motion (values in the range of \(\pm\)1.5 mm/year). In comparison to Sentinel-1, the processing of the 2002-2010 ENVISAT images over the same area (Figure 18) provided only 11,740 PSs, which are mainly located over the urban area. In this case, no PSs were obtained over the TSF, either because the embankment surfaces were less reflective at that time (less paved) or because of construction work on the embankment between 2001 and 2005.  
Figure 16: InSAR-derived displacement time series for the center of raised bog vs. precipitation. The data shown here are extracted for the point 3 of Figure 15a. The blue curves represent (**a**) the daily and (**b**) the monthly precipitation amount. Precipitation data obtained from the Carndolla weather station, located 5 km north of the peat area (available from [60]).  
Ground motions in AOI-2 were observed only in the area of mining activity and at the TSF. An area of more recent mining activities [46] under several houses, commercial buildings and part of the M3 motorway (Figure 17b) is associated spatially with InSAR-measured land settlement up to -6.8 mm/year that is linear from mid-2015 to early-2018 (Figure 19). No discernable damage to the buildings or the motorway has been observed during a brief field reconnaissance conducted in the area in July 2018. Points showing both subsidence and uplift are present in the main mining site (Figure 17c). Some of the buildings located in the north of this area appear to be affected consistently by subsidence of up to \(-\)3.7 mm/year (Figure 19). The highest velocities in AOI-2 occur over the TSF area (Figure 17d), the height of which was increased in 2015. The PS-InSAR results indicate subsidence of up to \(-\)17 mm/year (Figure 19) at the top of the TSF's perimeter embankment, with subsidence rates decreasing to the foot of the embankment where stable points have been measured. Analysis of the ascending track images suggests that motion of the embankment is predominantly vertical and is consistent with compaction.  
Figure 17: LOS velocity maps of AOI-2 obtained from Sentinel-1A/B images with the PS-InSAR approach. SAR imagery date range: May 2015-March 2018. **(a)** AOI-2 velocity map; **(b)** close-up map of the south-west section of the Tara mine site; **(c)** close-up map of the main mine site; **(d)** map of the Tailing Storage Facility (TSF) site. The white polygon is the simplified subsurface extent of the Navan orebody (after [46]). The red polygon is the area used to extract the PSs for the statistical analysis reported in the Discussions. The white circles are the locations of the extracted displacement time series shown in Figure 19. Base image source: Esri, DigitalGlobe, GeoEye, Earth Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.  
Figure 18: LOS velocity maps of AOI-1 obtained from ENVISAT images with the PS-InSAR approach. SAR imagery date range: November 2002–July 2010. The white polygon is the simplified subsurface extent of the Navan orebody (after [46]). Base image source: Esri, DigitalGlobe, GeoEye, Earth Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.