Lessons from Sea-Floor and Subsea-Floor Imagery of the Big’95 Debris Flow Scar and Deposit
Lessons from Sea-Floor and Subsea-Floor Imagery of the Big’95 Debris Flow Scar and Deposit
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Big’95 泥石流疤痕和沉积物的海底和海底图像的教训
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
R. Urgeles
中科院分区：
文献类型：
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作者：
G. Lastras;M. Canals;R. Urgeles
海底（多波束测深、多波束后向散射和侧扫声纳数据）和海底（超高分辨率地震反射剖面）图像是通过对 BIG’95 泥石流源区和地中海西北部埃布罗大陆坡和海隆沉积物的一系列调查获得的。侧扫声纳图像提供了有关端盘疤痕形态的宝贵信息，测深和后向散射可用于沉积物成像，而地震则显示内部结构以及与下方沉积物的关系。与该地区获得的岩心一起，BIG’95 的现有数据集是研究泥石流形态和动力学及其进一步建模的强大工具。
Sea-floor (multibeam bathymetry, multibeam-derived backscattering, and side-scan sonar data) and subsea-floor (very-high-resolution seismic reflection profiles) imagery has been obtained in a series of surveys from the BIG’95 debris flow source area and deposit in the Ebro continental slope and rise, Northwestern Mediterranean sea. Side-scan sonar imagery provides valuable information on the morphology of the headwall scar, bathymetry and backscattering are useful for imaging the deposit, while seismics show the internal structure and relationship with the underlying sediments. Together with cores obtained in the area, the existing data set for the BIG’95 is a powerful tool for the study of the morphology and dynamics of debris flows and for their further modelisation.