RT journal article
T1 Shipwrecks and man-made coastal structures as indicators of historical shoreline position. An interdisciplinary study in the Sancti Petri sand spit (Bay of Cádiz, SW Spain)
A1 Fernández Momblant, Tomás
A1 Río Rodríguez, Laura del
A1 Izquierdo González, Alfredo
A1 Gracia Prieto, Francisco Javier
A1 Bethencourt Núñez, Manuel
A1 Benavente González, Javier
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Ciencias de la Tierra
A2 Física Aplicada
K1 Shoreline retreat
K1 Numerical modelling
K1 Dispersion model
K1 Historical maps
K1 NAO index
AB Shoreline evolution studies are mostly performed by comparison of vertical images (e.g. aerial photographs andsatellite imagery), being limited to the last decades. However, phenomena such as longer term climatic fluctuationsmay cause important secular coastal changes which are mostly unknown. The use of archaeologicalremains as shoreline proxies could overcome this limitation by allowing to expand back in time the historicalshoreline record. The present study endorses the effectiveness of the use of shipwrecks and man-made structuresas proxy data for analyzing historical shoreline evolution. This was confirmed by the evaluation of nearshoreevolution (historical shorelines from 1787 to 1823 and recent changes from 1956 to 2013) and the reconstructionof the palaeobathymetry along Sancti Petri sand spit (SW Spain) by means of the analysis of historicaldocuments, historical maps, modern aerial photographs and a recent bathymetry (2011), along with thearchaeological prospection supported by the numerical modelling of the dispersion of archaeological remains.The analysis of historical maps has revealed a significant shoreline retreat over the medium term scale in SanctiPetri sand spit, averaging −1.2 m·year−1. Results from historical maps and archaeological remains show slightdifferences with respect to the most recent retreat rates (−0.9 m·year−1) obtained from aerial photographs forthe period 1956–2013. Spatial variations in coastal retreat along the sandspit are closely linked to local patternsof wave height and wave-induced currents. Significant temporal variation in rates of shoreline change wasobserved, probably related to storminess variability in the study area, as indicated by the relation between therates of coastal change for each analyzed period and the corresponding rate of change of winter NAO index.
PB ELSEVIER
SN 0025-3227
YR 2018
FD 2018
LK http://hdl.handle.net/10498/34389
UL http://hdl.handle.net/10498/34389
LA eng
NO Spanish Ministry of Economy and Competitiveness
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-may-2026