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首页> 外文会议>International Conference on Management of Natural Resources, Sustainable Development and Ecological Hazards >The impact of relative sea level rise on the Northern Adriatic Sea coast, Italy
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The impact of relative sea level rise on the Northern Adriatic Sea coast, Italy

机译：相对海平面上升对意大利北亚得里亚海海岸的影响

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The low-lying coast of the Northern Adriatic Sea, between the Venetian territory to the north and the Ravenna area to the south, is very sensitive to land and sea elevation changes. Subsidence assessments show that geological land subsidence has and continues to occur unevenly at different rates (from less than 1 to more than 5 mm/yr), ascribable primarily to sediment compaction and secondly to deformation of substratum. Anthropogenic subsidence, mainly due to ground-fluid removal, has severely occurred in the second half of 1900 reaching values of some centimetres in the Venice area and a few meters southward. Starting in the 1970s, however, with the halt of groundwater withdrawals, anthropogenic subsidence has been strongly reduced or stopped. The availability of tide gauge data in Trieste, Venice, and Ravenna, along the Northern Adriatic coast, allows accurate assessment and meaningful observations of sea level changes. The analysis of data recorded from 1890 to 2007 shows negative trends of relative sea level equal to 1.2 mm/yr in Trieste, 2.5mm/year in Venice, and 8.5 mm/yr in Ravenna. Since Trieste is known to be stable, the rate of 1.2 mm/yr is attributable to the eustatic rise only. The comparison between Trieste and the other two cities shows that the trend at Venice and Ravenna is significantly influenced by land subsidence that is responsible for about the 57% and 85%, respectively, of the recorded relative sea/ground elevation changes. The relative sea level rise has induced modifications in geomorphologic and ecological features of the entire coast.
机译：位于亚得里亚海北部的低洼海岸，威尼斯境内北部和拉文纳地区南部之间，是海陆高程的变化非常敏感。沉降的评估表明，地质地面沉降具有并继续以不同的速率发生不均匀（从低于1到大于5毫米/年），可归因主要沉积物压实并且其次基质的变形。人为塌陷，主要是由于地面液去除，已经严重发生在威尼斯地区几厘米1900年达到价值和几米下半年向南。在20世纪70年代开始，然而，随着地下水开采的停顿，人为塌陷已经强烈地减少或停止。在的里雅斯特，威尼斯和拉文纳验潮站数据的可用性，沿北亚得里亚海海岸，可以实现精确的评估和海平面变化有意义的意见。从海平面相对的1890年至2007年节目不利趋势记录的数据的分析等于的里雅斯特1.2毫米/年的2.5mm /年在威尼斯，和8.5毫米/年在Ravenna。由于的里雅斯特已知是稳定的，1.2毫米/年的速率可归因​​于仅海平面上升。 ，在威尼斯和拉文纳的趋势显著地面沉降影响的里雅斯特和其他两个城市演出的对比，负责大约分别为57％和85％，所记录的相对海面/地面高程的变化。相对海平面上升已经引起整个海岸地貌和生态功能的修改。

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