METEOR cruise M146 raw data of EM122 multibeam echosounder (bathymetry, beam time series), Tropiquito@en

Multibeam echosounder (MBES) data recorded during RV METEOR cruise M146 between 17.03.2018 and 16.04.2018. The data covers the transit (cruise started in Receive/Brazil) in international waters crossing the Atlantic Ocean, a single survey line crossing Tropiquito seamount (SW of Tropic seamount) and the main target at Henry seamount, southeast of El Hierro, Canary Islands. The main objective of this cruise was to discover hydrothermal venting sites at Henry Seamount as data acquired during the previous cruise M66/1 showed evidences that there might be active hydrothermal circulation at Henry Seamount. Therefore, the bathymetric surveys conducted with hull-mounted MBES and the MARUM AUV SEAL were accompanied with investigations in the water column, heat flow measurements, TV-sled dives and high-resolution reflection seismic. CI Citation: Paul Wintersteller ([e-mail]) as responsible party for bathymetry and backscatter post-processing and its products. […]本数据集为2018年3月17日至2018年4月16日期间，在RV METEOR号研究船第M146航次中采集的多波束测深声呐（Multibeam Echosounder, MBES）数据。 数据涵盖跨大西洋国际水域的航行航段（本航次始于Receive/Brazil）、一条横跨特罗皮基托海山（Tropic海山西南侧）的单条测量测线，以及位于加那利群岛埃尔耶罗岛东南方向的亨利海山（Henry Seamount）核心探测区域。 本次航次的核心目标是探寻亨利海山的热液喷口点位：此前M66/1航次采集的数据已显示，亨利海山区域可能存在活跃的热液循环活动。因此，本次巡航在搭载船载多波束测深声呐与MARUM自主水下航行器（Autonomous Underwater Vehicle, AUV）SEAL开展水深测量的同时，还同步开展了水体调查、热流测量、电视滑橇（TV-sled）潜次作业以及高分辨率反射地震勘探。 数据引用说明：保罗·温特施泰勒（Paul Wintersteller）（邮箱：[e-mail]）为水深与后向散射信号后处理及其成果的负责人。[...]