Present Relative Sea Level Rise in the Northern Adriatic Coastal Area

Carbognin, Laura and Teatini, Pietro and Tosi, Luigi and Strozzi, Tazio and Tomasin, Alberto (2011) Present Relative Sea Level Rise in the Northern Adriatic Coastal Area. In: Coastal and marine spatial planning. Marine Research at CNR, DTA/06 . CNR - Dipartimento Scienze del Sistema Terra e Tecnologie , Roma, pp. 1147-1162.

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Abstract

Relative sea level rise (RSLR), that has been occurred along the entire coastal areas of the Northern Adriatic Sea, includes land subsidence, both natural and maninduced, and eustacy. Their combined effect has produced relative ground settlements ranging from centimetres to meters. RSLR represents one of the geologic hazards threatening the low-lying coast. Recent progresses made in understanding these two processes are presented. Synthetic Aperture Radar (SAR) interferometry has significantly improved the knowledge of actual land subsidence. In particular, comprehensive maps of the vertical displacements occurred over the period 1992-2009 in the region between Venice and Ravenna reveal a significant spatial variability, ranging from a slight 1 to 2 mm/yr uplift, to a serious subsidence of more than 15 mm/yr. The availability of tide gauge data in Trieste, Venice, and Ravenna allows accurate assessment and meaningful observations on sea level change. The period 1896-2006 is characterized by an average rise of 1.2±0.1 mm/yr. The analyses here performed show that a time series at least 50 yr long must be used to obtain statistically significant results and reliable trend, due to the 7-8 year pseudo-cyclicity, recorded at many Mediterranean coastal stations. In Venice and Ravenna the influence of land subsidence on the RSLR amounts to 57% and 85%, respectively. This percentage has been estimated in 95% at the Po Delta.

Item Type:	Book Section
Additional Information:	Monographic series ISSN: 2239-5172
Uncontrolled Keywords:	Relative Sea Level Rise; Northern Adriatic Coastal Area; Trieste; Venice; Ravenna; land subsidence; SAR Interferometry
Subjects:	500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia
Depositing User:	Dr Luigi Tosi
Date Deposited:	08 Oct 2014 09:10
Last Modified:	08 Oct 2014 09:10
URI:	http://eprints.bice.rm.cnr.it/id/eprint/10023

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