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We depict the relative sea-level rise scenarios for the year 2100 from eight areas of the Italian peninsula. Our estimates are based on the Rahmstorf (2007) and IPCC-AR5 reports 2013 for the RCP-8.5 scenarios (www.ipcc.ch) of climate change, adjusted for the rates of vertical land movements (isostasy and tectonics). These latter are inferred from the elevation of MIS 5.5 deposits and from late Holocene sea-level indicators, matched against sea-level predictions for the same periods using the glacio-hydro-isostatic model of Lambeck et al. (2011). We focus on a variety of tectonic settings: the subsiding North Adriatic coast (including the Venice lagoon), three tectonically stable in Sardinia coastal plains (Oristano, Colledonia and Cagliari coastal plain), Marche (Tronto), Abruzzo (Pescara and Sangro coastal areas), Apulia (Lesina), Granelli (Sicily), and Marina di Campo (Tuscany) and the slightly uplifting Taranto coastal plain. Maps of ooding scenarios are shown on high-resolution Digital Terrain Models mostly based on Lidar data. The expected relative sea-level rise by 2100 will change dramatically the present-day morphology, potentially ooding up to about 6000 km2 of coastal plains at elevations close to present-day sea level. The subsequent loss of land will impact the environment and local infrastructures, suggesting land planners and decision makers to take into account these scenarios for a cognizant coastal management. Our method developed for the Italian coast can be applied worldwide in other coastal areas expected to be a ected by marine ingression due to global climate change.

In the last years, the activities of Working Groups (WGs), in the framework of Italian Association of Physical Geography and Geomorphology (AIGeo), were aimed at the new issue of the legend of the Italian Geomorphological Map. The activities were performed keeping in mind the necessity: 1) to add new symbols because the great progress made in geomorphology, in terms of new knowledge on geomorphological processes and landforms, after the first issue of the legend in 1994; 2) to have a legend usable with large scale maps, suitable for applied purposes; 3) to create a legend usable with softwares (GIS environment, etc). The WG on Coastal Morphodynamics contributed to this work, as well, promoting, through meetings and workshops, the debate among the Italian coastal geomorphologists on the approach needed to produce a modern geomorphological legend. The classic dichotomy forms-processes used in the geomorphological mapping is often based to static concepts, especially when applied to marine and coastal areas, affected by fast dynamic events, sometimes paroxysmal. We present the new geomorphological legend to represent both coastal and underwater contexts, aimed to the improvement of classic geomorphological legends. The main goal of the work was the production of a legend suitable to clarify the importance and the need of representing landforms in the context ofthe Quaternary evolution, as well as from more recent or modern processes.

We depict the relative sea-level rise scenarios for the year 2100 from four areas of the Italian peninsula. Our estimates are based on the Rahmstorf (2007) and IPCC-AR5 reports 2013 for the RCP-8.5 scenarios ( www.ipcc.ch ) of climate change, adjusted for the rates of vertical land movements (isostasy and tectonics). These latter are inferred from the elevation of MIS 5.5 deposits and from late Holocene sea-level indicators, matched against sea-level predictions for the same periods using the glacio-hydro-isostatic model of Lambeck et al. (2011). We focus on a variety of tectonic settings: the subsiding North Adriatic coast (including the Venice lagoon), two tectonically stable Sardinia coastal plains (Oristano and Cagliari), and the slightly uplifting Taranto coastal plain, in Apulia. Maps of flooding scenarios are shown on high-resolution Digital Terrain Models mostly based on Lidar data. The expected relative sea-level rise by 2100 will change dramatically the present-day morphology, potentially flooding up to about 5500 km2 of coastal plains at elevations close to present-day sea level. The subsequent loss of land will impact the environment and local infrastructures, suggesting land planners and decision makers to take into account these scenarios for a cognizant coastal management. Our method developed for the Italian coast can be applied worldwide in other coastal areas expected to be affected by marine ingression due to global climate change.