DInSAR and topographic techniques applied to study the Tazones Lighthouse landslide (N Spain)

Ground displacements associated to landslides can be analysed by means of geological,geotechnical, topographic and remote sensing techniques. In this work different classicaltopographic techniques are combined with a satellite based remote sensing technique:Differential SAR Interferometry (DInSAR). The topographic techniques provide precisemeasurements on a set of points strategically located for each landslide. The DInSAR techniqueprovides a more opportunistic set of points, usually denser than topographic techniques,providing key information on the area of influence of the movement and its potential impact onthe surroundings. The combination of both approaches provides a complementary set ofmeasurements useful to properly understand the landslide mechanics. The area of study isTazones Lighthouse sector (43º 32’ 54’’N, 5º 23’ 57’’W), located on a coastal cliff in north Asturias (NSpain), where there is an important active mass movement.NO ACK