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首页> 外文期刊>Marine Geophysical Researches >Regional-scale seafloor mapping and geohazard assessment. The experience from the Italian project MaGIC (Marine Geohazards along the Italian Coasts)
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Regional-scale seafloor mapping and geohazard assessment. The experience from the Italian project MaGIC (Marine Geohazards along the Italian Coasts)

机译：区域尺度的海底绘图和地质灾害评估。意大利项目MaGIC（意大利沿海的海洋地质灾害）的经验

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摘要

Recent developments in seafloor imaging and mapping techniques greatly improved our capability of identifying marine geohazards affecting continental margins. Geomorphic features can be detected in great detail by high-resolution multibeam imaging and regarded as geohazard indicators; the most common include slide scars and deposits, canyon headscarps and steep erosional flanks, fault-related seafloor unevenness, mud volcanoes, pockmarks, gravity flow deposits, erosional scours and bedforms indicating sediment mobility at diverse temporal/ spatial scale. These processes are widespread on Italian continental margins and are potential indicators of geohazard for human settlements and infrastructures in the offshore and coastal zones. The national Project MaGIC (Marine Geohazards along the Italian Coasts) aims at documenting potential geohazards based on the acquisition of high-resolution multibeam bathymetry and on the production of maps of the geohazard-related geomorphic features for most of the Italian continental margins. With reference to this issue, we discuss some of the most frequent problems dealing with reconnaissance, interpretation and cartographic representation of geohazard-related geomorphic features at a regional scale.
机译：海底成像和制图技术的最新发展大大提高了我们识别影响大陆边缘的海洋地质灾害的能力。地貌特征可以通过高分辨率多束成像进行详细检测，并被视为地质灾害指标;最常见的包括滑坡疤痕和沉积物，峡谷头皮和陡峭的侵蚀面，与断层有关的海底不平整，火山泥，麻子，重力流沉积物，冲刷物和床形，这些特征表明沉积物在不同时空范围内的流动性。这些过程在意大利大陆边缘普遍存在，并且是潜在的人类住区和近海和沿海地区基础设施地质灾害指标。国家MaGIC项目（意大利海岸的海洋地质灾害）旨在基于高分辨率多波束测深技术的获取以及针对意大利大部分大陆边缘与地质灾害相关的地貌特征的地图制作，记录潜在的地质灾害。参考此问题，我们讨论了在区域范围内与地质灾害相关的地貌特征的侦察，解释和制图表达有关的一些最常见的问题。

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