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首页> 外文期刊>Journal of African Earth Sciences >A methodological approach for mapping Tunisia's lower coast's risk of submersion: The case of the coastal sabkhas of Sidi Khlifa and Halq El Minjel (Central-East Tunisia)
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A methodological approach for mapping Tunisia's lower coast's risk of submersion: The case of the coastal sabkhas of Sidi Khlifa and Halq El Minjel (Central-East Tunisia)

机译：绘制突尼斯低海岸淹没风险的方法学方法：Sidi Khlifa和Halq El Minjel（突尼斯中东部）沿海萨布哈人

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This study presents a method to map the risk of submersion of the lower Tunisian coasts, by taking as an example the coastal sabkhas system of a part of the bottom of the gulf of Hammamet between the sabkhas of Sidi Khlifa and Halq El Minjel. Total Water Levels (TWLs) were estimated by considering a water level rise for 2100 estimated by IPCC scenarios (2007) and the runup during storms. Similarly, local hydrodynamic parameters such as tidal level, storm surge, wave setup, swash and coastal erosion have been taken into consideration. The mapping approach of potentially submersible areas is based on geographic information system (GIS) modeling. Based on a static method, the approach relies on the crossing of topographic data and extreme water levels in order to assess potentially floodable areas.The mapping application has shown that the areas that are likely to be annexed to the sea are important (17.5 km(2)). Part of the Halq El Minjel sabkha of 16.1 km(2) will be transformed into a permanent lagoon. Thus, coastal wetland ecosystems will be threatened by changes in living conditions since the rather saline biocenosis will be transformed into euryhaline and eurytherm lagoon biocenosis. However, reforestation and conservation of the coastal dune in these low-lying areas could help protect the backshore from expected risk of storm surges.
机译：这项研究以西迪·赫利法（Sidi Khlifa）和哈尔克·明吉尔（Halq El Minjel）之间的哈马马特（Hammamet）海湾底部的沿海sabkhas系统为例，提出了一种绘制突尼斯较低海岸淹没风险的方法。总水位（TWLs）是通过考虑IPCC情景（2007年）和暴风雨期间的上升估算的2100年水位上升来估算的。同样，已经考虑了诸如潮汐水位，风暴潮，波浪形成，斜流和海岸侵蚀等局部水动力参数。潜在潜水区域的地图绘制方法基于地理信息系统（GIS）建模。该方法基于静态方法，依赖于地形数据和极端水位的交叉来评估潜在的可洪泛区。地图应用程序显示，可能被附在海面上的区域很重要（17.5 km（ 2））。 16.1 km（2）的Halq El Minjel sabkha的一部分将变成一个永久的泻湖。因此，沿海的湿地生态系统将受到生活条件变化的威胁，因为相当咸的生物犯罪将转变为淡水鱼和淡水泻湖的生物犯罪。但是，在这些低洼地区的植树造林和沿海沙丘的养护可以帮助保护沿海地区免受风暴潮的预期风险。

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