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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10276

Authors: Carbognin, Laura*
Teatini, Pietro*
Tosi, Luigi*
Strozzi, Tazio*
Tomasin, Alberto*
Title: Present Relative Sea Level Rise in the Northern Adriatic Coastal Area
Title of journal: Marine Research at CNR - Coastal and Marine Spatial Planning
Series/Report no.: DTA/06-2011
Publisher: CNR - Dipartimento Scienze del Sistema Terra e Tecnologie per l'Ambiente - ex DTA CNR -
Issue Date: Nov-2011
URL: http://www.dta.cnr.it/content/view/7204/45/lang,en/
Keywords: Relative sea level rise
Synthetic Aperture Radar
Land subsidence
Northern Adriatic Coastal Area
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 man-induced, 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-1 uplift, to a serious subsidence of more than 15 mm•yr-1. 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-1. 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.
Appears in Collections:Papers Published / Papers in press
05.08.99. General or miscellaneous

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