RT journal article
T1 Application of UAV-SfM Photogrammetry to Monitor Deformations of Coastal Defense Structures
A1 García López, Santiago
A1 Vélez Nicolás, María de la Mercedes
A1 Ruiz Ortiz, Verónica
A1 Zarandona Palacio, Pedro
A1 Contreras de Villar, Antonio
A1 Contreras de Villar, Francisco
A1 Muñoz Pérez, Juan José
A2 Biología
A2 Ciencias de la Tierra
A2 Física Aplicada
A2 Ingeniería Industrial e Ingeniería Civil
K1 structure from motion
K1 UAV
K1 breakwater
K1 coastal defense
K1 structure deformation
AB Coastal defense has traditionally relied on hard infrastructures like breakwaters,dykes, and groins to protect harbors, settlements, and beaches from the impacts of longshore drift and storm waves. The prolonged exposure to wave erosion and dynamic loadsof different nature can result in damage, deformation, and eventual failure of these infrastructures, entailing severe economic and environmental losses. Periodic post-constructionmonitoring is crucial to identify shape changes, ensure the structure’s stability, and implement maintenance works as required. This paper evaluates the performance and qualityof the restitution products obtained from the application of UAV photogrammetry to thelongest breakwater in the province of Cádiz, southern Spain. The photogrammetric outputs,an orthomosaic and a Digital Surface Model (DSM), were validated with in situ RTK-GPSmeasurements, displaying excellent planimetric accuracy (RMSE 0.043 m and 0.023 m in Xand Y, respectively) and adequate altimetric accuracy (0.100 m in Z). In addition, the average enveloping surface inferred from the DSM allowed quantification of the deformationof the breakwater and defining of the deformation mechanisms. UAV photogrammetryhas proved to be a suitable and efficient technique to complement traditional monitoringsurveys and to provide insights into the deformation mechanisms of coastal structures.
PB MDPI
SN 2072-4292
YR 2025
FD 2025
LK http://hdl.handle.net/10498/36401
UL http://hdl.handle.net/10498/36401
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-may-2026