## 3 Results
### High-Resolution Remote Sensing Data
#### 3.2.1 Change Detection
Furthermore, the areas with a slope inclination of higher than 45 degrees (red color) were expanded in 2016, and the absolute  
Figure 8: On the (**left**), a Pleiades orthophoto of the Egremni coast in 2016 is presented. On the (**right**), the same area has been displayed in the Pleiades orthophoto in the year 2015. The yellow line indicates the landslide extent. The backwards movement of the cliff is evident on the left image. The orange line indicates the landslide crown while the black line represents the old road to the beach that was destroyed. value of the highest inclination increased 5 degrees after the earthquake (78.6 degrees in 2016 instead of 73.6 in 2015, respectively). Figure 10: On the (**left**), a Pleiades orthophoto of the Egremni coast in 2016 is presented. On the (**right**), the NDVI difference between the years 2015 and 2016 is displayed. The black dotted line indicates the landslide extent. It is obvious that there is a great loss of vegetation as a result of the earthquake that occurred in 2015. Figure 9: On the (**left**), the slope map of the Egremni coast in 2016 is displayed. In the (**middle**), the same area is displayed in the year 2015. Color changes indicate the changes to the cliff inclination before and after the 2015 earthquake. The slope difference values are presented in the (**right**) image. Figure 11: On the (**left**), a Pleiades orthophoto of the Okeanos coast in 2016 is presented. On the (**right**), the same area is displayed in the year 2015, as captured by the Pleiades orthophoto. The yellow line indicates the landslide extent. The backwards movement of the cliff is evident on the left image. Figure 12: Enlargement of the previous figure. On the (**top**), a Pleiades orthophoto of the Okeanos southern coast in the year 2016 is displayed. On the (**bottom**), the same area has been captured with the Pleiades orthophoto in the year 2015. The backwards movement of the cliff is evident on the upper image. The landslide affected the buildings presented on the right part of the area. The orange line indicates the crown of the landslide. Similar topographic changes arising from the 2015 seismicity were mapped in the Gialos coast as presented in Figures 14 and 15. A Pleiades orthophoto of the Gialos coast in 2016 is presented in the left part of Figure 14. The same area in 2015 is displayed in the right part of Figure 7:0 The yellow line indicates the landslide extent. The detected landslides in the specific part have been grown in length and width, while the backwards movement of the cliff is evident on the left image (Figure 14). The loss of vegetation in the south part of the coast reveals the mass-wasting processes moving the material from the upper cliff to the lower areas close to the sea. The total extent of the affected area overpassed 2.7 km in width and 0.9 km in length. The slope maps of the Gialos coast before and after the occurrence of the 2015 earthquake are presented in Figure 7:1 Large inclination changes were identified in the southern part of the coast. Areas with a slope inclination higher than 45 degrees (red color) have been increased in 2016 and the absolute value of the highest inclination has been altered by almost 11 degrees after the earthquake (78.6 degrees in 2016 instead of 67.9 in 2015, respectively). At the same time, areas with slopes ranging from 5-15 degrees have surged, which indicates that the debris material has been moved from the upper part of the cliff to the lower. Finally, Komilio coast, which is located in the northern part of the analyzed western cliffs, was also affected by the 2015 seismicity. Figures 16 and 17 depict the changes to the cliff's morphology and slope. Specifically, a Pleiades orthophoto of the Komilio coast in 2016 is presented in the left part of Figure 16, while on the right, the same area mapped in the year 2015 is displayed. The yellow line indicates the landslide extent and the black line depicts the dirty road network driving to the beach.