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Flooding scenarios due to land subsidence and sea-level rise: a case study for Lipari Island (Italy)

机译:洪水情景因土地沉降和海平面上升:针对Lipari Island(意大利)的案例研究

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摘要

Archaeological and instrumental data indicate that the southern sector of the volcanic island of Lipari has been subsiding for the last 2100 years due to isostatic and tectonic factors, at variable rates of up to similar to 11 mm a(-1). Based on this data, a detailed marine flooding scenario for 2100 AD is provided for the bay of Marina Lunga in the eastern part of the island from (1) an ultra-high-resolution Digital Terrain and Marine Model (DTMM) generated from multibeam bathymetry (MB) and Unmanned Aerial Vehicles (UAV), (2) the rate of land subsidence from Global Positioning System (GPS) data and (3) the regional sea-level projections of the International Panel on Climate Change (IPCC). When land subsidence is considered, the upper bound of sea-level rise is estimated at 1.36 m and 1.60 m for RCP4.5 and RCP8.5 climate change scenarios, respectively. Here, we show the expected impact of marine flooding at Lipari for the next 85 years and discuss the hazard implications for the population living along the shore.
机译:考古和仪器数据表明,在过去2100年里,由于均衡和构造因素,利帕里火山岛的南段一直在以高达11 mm a(-1)的可变速率下沉。基于这些数据,根据(1)由多波束测深(MB)和无人机(UAV)生成的超高分辨率数字地形和海洋模型(DTMM),为该岛东部的马里纳伦加湾(bay of Marina Lunga)提供了公元2100年的详细海洋洪水场景,(2)来自全球定位系统(GPS)数据的地面沉降率;(3)国际气候变化专门委员会(IPCC)的区域海平面预测。考虑地面沉降时,RCP4的海平面上升上限估计为1.36 m和1.60 m。5和RCP8。分别为5种气候变化情景。这里,我们展示了未来85年里利帕里海洋洪水的预期影响,并讨论了对沿岸居民的危害。

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