RT info:eu-repo/semantics/article
T1 Application of multiple geomatic techniques for coastline retreat analysis: The case of gerra beach (Cantabrian coast, Spain)
A1 Sanjosé Blasco, José Juan de
A1 Serrano Cañadas, Enrique
A1 Sánchez Fernández, Manuel
A1 Gómez Lende, Manuel
A1 Redweik, Paula
K1 Geografía
K1 Coastal geomorphology
K1 Shoreline change
K1 Geomatic techniques
K1 Geomorfología costera
K1 Técnicas geomáticas
K1 Cambio de línea de costa
K1 54 Geografía
AB The beaches of the Cantabrian coast (northern Spain) are exposed to strong winter storms that cause the coastline to recede. In this article, the coastal retreat of the Gerra beach (Cantabria) is analyzed through a diachronic study using the following different geomatic techniques: orthophotography of the year 1956; photogrammetric flights from 2001, 2005, 2010, 2014, 2017; Light Detection and Ranging (LiDAR) survey from August 2012; Unmanned Aerial Vehicle (UAV) survey from November 2018; and terrestrial laser scanner (TLS) through two dates per year (spring and fall) from April 2012 to April 2020. With the 17 observations of TLS, differences in volume of the beach and the sea cliff are determined during the winter (November–April) and summer (May–October) periods, searching their relationship with the storms in this eight-year period (2012–2020). From the results of this investigation it can be concluded that the retreat of the base of the cliff is insignificant, but this is not the case for the top of the cliff and for the existing beaches in the Cantabrian Sea where the retreat is evident. The retreat of the cliff top line in Gerra beach, between 1956 and 2020 has shown values greater than 40 m. The retreat in other beaches of the Cantabrian Sea, in the same period, has been more than 200 m. With our measurements, investigations carried out on the retreat of the cliffs on the Atlantic coast have been reinforced, where the diversity of the cliff lithology and the aggressive action of the sea (storms) have been responsible for the active erosion on the face cliff. In addition, this research applied geomatic techniques that have appeared commercially during the period (1956–2020), such as aerial photogrammetry, TLS, LiDAR, and UAV and analyzed the results to determine the precision that could be obtained with each method for its application to similar geomorphological structures.
PB MDPI
YR 2020
FD 2020
LK https://uvadoc.uva.es/handle/10324/58760
UL https://uvadoc.uva.es/handle/10324/58760
LA eng
NO Remote Sens. 2020, vol.12, n. 21, 3669
NO Producción Científica
DS UVaDOC
RD 19-nov-2024