AUV based acoustic measurements: Multi-beam echosounder, sub-bottom profiler, and side-scan sonar data obtained in the vicinity of the Megaplume natural hydrocarbon seep site in the Gulf of Mexico from 2017-06-18 to 2017-06-19

Multi-beam, side-scan sonar, and sub-bottom profiler data were obtained from 2017-06-18 to 2017-06-19 during a survey of the Green Canyon GC600 block in the region of the Megaplume natural hydrocarbon seep site (90.5710 W, 27.3698 N, water depth ~1186 m). The instruments were mounted on an autonomous underwater vehicle (AUV) deployed from Oceaneering International’s vessel Ocean Intervention II. The AUV was flown in a pre-determined grid pattern ~40m above the bottom to identify seep sites through the backscatter signature of buoyant gasses and oils.本次数据集包含2017年6月18日至2017年6月19日期间，在大羽状流天然烃类渗漏点（Megaplume natural hydrocarbon seep site，坐标：西经90.5710°，北纬27.3698°，水深约1186米）所在区域的Green Canyon GC600区块勘探作业中采集的多波束声呐、侧扫声呐（side-scan sonar）及浅地层剖面仪（sub-bottom profiler）数据。相关探测仪器搭载于自主水下航行器（Autonomous Underwater Vehicle, AUV），该航行器由Oceaneering International公司的"Ocean Intervention II"号作业船部署。AUV以距海底约40米的预定网格航迹开展勘测，通过浮力气体与石油的后向散射特征识别烃类渗漏点位。