Proceedings of the 12th International INQUA meeting on paleoseismology, active tectonic and archaeoseismology

182 PATA Days 2024 M E T H O D S A detailed literature review, historic data complication and analysis was conducted for Trollaskagi highlighting the key factors directly pertaining to the exploration of the DL which include the bedrock geology, structural features, alteration, geothermal regime (location of hot springs), and seismic events. Remote landslide mapping was completed utilizing aerial digital elevation models (DEMs) to manually delineate landslides based on their morphology as polygon features in ArcPro software. The digitized landslide features were plotted with macro and micro- seismicity data accessed from the ICEL-NMAR database as show in figure 1. Field verification and reconnaissance mapping of landslide locations, faults, dikes, and other structural and Late-Quaternary features was undertaken in 2023 to look for indication of active fault structures and movements. Drone photogrammetry was completed at a scale of 1:5000 for some of the areas of interest in North Iceland using the Metashape Pro software in a structure from motion (SfM) workflow. An example of the drone survey images is shown in Figure 2. The correlation between the frequency and proximity of landslides to seismic events was used to determine zones of interest for further fault, dike, and landslide mapping within the DL and environs. Fig. 2: a) Drone image of a landslide south of the town of Dalvik, North Iceland. b) DEM imagery of the same landslide. Black line represents the landslide scar, blue trace indicates the area of the landslide deposits.