The Po Delta is restarting progradation: geomorphological evolution based on a 47-years Earth Observation dataset

Abstract From the 1950s, the Po delta, one of the largest anthropogenic world deltas, has been subjected to a fast degradation and shoreline retreat due a marked reduction of sediment supply, mainly controlled by human impacts/factors, including subsidence. Through the interpretation of satellite im...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	A. Ninfo, P. Ciavola, P. Billi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4227a0541b2a4551bd38ea6eaa6ee7b8
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4227a0541b2a4551bd38ea6eaa6ee7b8
record_format	dspace
spelling	oai:doaj.org-article:4227a0541b2a4551bd38ea6eaa6ee7b82021-12-02T15:08:27ZThe Po Delta is restarting progradation: geomorphological evolution based on a 47-years Earth Observation dataset10.1038/s41598-018-21928-32045-2322https://doaj.org/article/4227a0541b2a4551bd38ea6eaa6ee7b82018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-21928-3https://doaj.org/toc/2045-2322Abstract From the 1950s, the Po delta, one of the largest anthropogenic world deltas, has been subjected to a fast degradation and shoreline retreat due a marked reduction of sediment supply, mainly controlled by human impacts/factors, including subsidence. Through the interpretation of satellite images, coupled with the analysis of the flow discharge, and of the annual frequency of marine storms, we show that recently (>2010) the Po River has resumed delta progradation, especially in its northern portion. This happens after decades of erosion, followed by alternating regrowth and degradation phases, indicating conditions of substantial stability (1970–2000). Today the delta shows aggradation of new mouth-bars at the main distributary mouth, a clear evidence of active constructive processes. The ongoing trend marks a countertendency compared to many deltas worldwide.A. NinfoP. CiavolaP. BilliNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-6 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q A. Ninfo P. Ciavola P. Billi The Po Delta is restarting progradation: geomorphological evolution based on a 47-years Earth Observation dataset
description	Abstract From the 1950s, the Po delta, one of the largest anthropogenic world deltas, has been subjected to a fast degradation and shoreline retreat due a marked reduction of sediment supply, mainly controlled by human impacts/factors, including subsidence. Through the interpretation of satellite images, coupled with the analysis of the flow discharge, and of the annual frequency of marine storms, we show that recently (>2010) the Po River has resumed delta progradation, especially in its northern portion. This happens after decades of erosion, followed by alternating regrowth and degradation phases, indicating conditions of substantial stability (1970–2000). Today the delta shows aggradation of new mouth-bars at the main distributary mouth, a clear evidence of active constructive processes. The ongoing trend marks a countertendency compared to many deltas worldwide.
format	article
author	A. Ninfo P. Ciavola P. Billi
author_facet	A. Ninfo P. Ciavola P. Billi
author_sort	A. Ninfo
title	The Po Delta is restarting progradation: geomorphological evolution based on a 47-years Earth Observation dataset
title_short	The Po Delta is restarting progradation: geomorphological evolution based on a 47-years Earth Observation dataset
title_full	The Po Delta is restarting progradation: geomorphological evolution based on a 47-years Earth Observation dataset
title_fullStr	The Po Delta is restarting progradation: geomorphological evolution based on a 47-years Earth Observation dataset
title_full_unstemmed	The Po Delta is restarting progradation: geomorphological evolution based on a 47-years Earth Observation dataset
title_sort	po delta is restarting progradation: geomorphological evolution based on a 47-years earth observation dataset
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/4227a0541b2a4551bd38ea6eaa6ee7b8
work_keys_str_mv	AT aninfo thepodeltaisrestartingprogradationgeomorphologicalevolutionbasedona47yearsearthobservationdataset AT pciavola thepodeltaisrestartingprogradationgeomorphologicalevolutionbasedona47yearsearthobservationdataset AT pbilli thepodeltaisrestartingprogradationgeomorphologicalevolutionbasedona47yearsearthobservationdataset AT aninfo podeltaisrestartingprogradationgeomorphologicalevolutionbasedona47yearsearthobservationdataset AT pciavola podeltaisrestartingprogradationgeomorphologicalevolutionbasedona47yearsearthobservationdataset AT pbilli podeltaisrestartingprogradationgeomorphologicalevolutionbasedona47yearsearthobservationdataset
_version_	1718388117098987520

The Po Delta is restarting progradation: geomorphological evolution based on a 47-years Earth Observation dataset

Ejemplares similares