Integration of Remote Sensing and Offshore Geophysical Data for Monitoring the Short-Term Morphological Evolution of an Active Volcanic Flank: A Case Study from Stromboli Island
Integration of Remote Sensing and Offshore Geophysical Data for Monitoring the Short-Term Morphological Evolution of an Active Volcanic Flank: A Case Study from Stromboli Island
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DOI：
10.3390/rs14184605
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发表时间：
2022-09-01
期刊：
影响因子：
5
通讯作者：
Chiocci, Francesco Latino
中科院分区：
文献类型：
--
作者：
Casalbore, Daniele;Di Traglia, Federico;Chiocci, Francesco Latino
斯特龙博利（Stromboli）的Sciara del Fuoco（SdF）塌陷疤痕是一个活火山区，受到爆炸性/喷涌式喷发和质量消耗过程造成的快速形态变化的影响。本文的目的是证明多时相遥感（摄影测量，COSMO-SkyMed合成孔径雷达振幅图像）和海洋地球物理数据（多波束和侧扫声纳数据）的综合分析的重要性，以表征主要形态，纹理和体积的变化，发生沿着SdF斜坡在2020-2021年期间。分析显示，2021年5月19日火山口边缘坍塌产生的火山碎屑密度流具有显著的侵蚀潜力，在Sciara del Fuoco斜坡上动员了44，000 m3的最小体积，仅考虑浅水环境，就侵蚀了350，000 - 400，000 m3的物质。该分析还使我们能够限制在监测期间控制不同熔岩流和溢流的主要因素。尽管陆上和海底斜坡之间的形态连续性，在SDF的纹理变化主要取决于不同的过程和特征的陆上斜坡，沿海地区，近岸，和“更深”的海洋区域。
The Sciara del Fuoco (SdF) collapse scar at Stromboli is an active volcanic area affected by rapid morphological changes due to explosive/effusive eruptions and mass-wasting processes. The aim of this paper is to demonstrate the importance of an integrated analysis of multi-temporal remote sensing (photogrammetry, COSMO-SkyMed Synthetic Aperture Radar amplitude image) and marine geophysical data (multibeam and side scan sonar data) to characterize the main morphological, textural, and volumetric changes that occurred along the SdF slope in the 2020-2021 period. The analysis showed the marked erosive potential of the 19 May 2021 pyroclastic density current generated by a crater rim collapse, which mobilized a minimum volume of 44,000 m(3) in the upper Sciara del Fuoco slope and eroded 350,000-400,000 m(3) of material just considering the shallow-water setting. The analysis allowed us also to constrain the main factors controlling the emplacement of different lava flows and overflows during the monitored period. Despite the morphological continuity between the subaerial and submarine slope, textural variations in the SdF primarily depend on different processes and characteristics of the subaerial slope, the coastal area, the nearshore, and "deeper" marine areas.