SVP data collected during the iMAR 2021/Eurofleets+ research cruise in Mid Atlantic Ridge (Azores EEZ)

this dataset was produced during the imar cruise “the integrated assessment of the distribution of vulnerable marine ecosystem along the mid-atlantic ridge (mar) in the azores region”, that took place aboard the research vessel pelagia of the royal netherlands institute for sea research between may 19th and june 2nd 2021. the imar cruise aimed to evaluate the role of the mar in shaping latitudinal and trans-atlantic patterns in deep-sea biogeography, connectivity and assemblages of deep-sea megafauna. this expedition was funded by the sea oceans program of eurofleets+ and the h2020 european project iatlantic, and was led by the university of the azores (portugal) in collaboration with the hydrographic institute and university of porto (portugal), the university of aarhus (denmark), the national oceanography center (united kingdom), geomar (germany), the university museum of bergen (norway), the pp shirshov institute of oceanology (russia), and the university of vale do itajaí (brazil). vertical ctd seabird sbe 32 /rosette profiles were conducted at 19 stations to generate sound velocity profiles (table 1), mainly in the north portion of the mar in the exclusive economic zone around the azores. the “.cnv” files contain the sound velocity data binned to 1 m depth intervals using the “bin average”.

本数据集系在“对大西洋中脊（MAR）沿线脆弱海洋生态系统分布的综合评估”的IMAR巡航活动中生成，该活动于2021年5月19日至6月2日间在荷兰皇家海洋研究所的研究船“Pelagia”上展开。IMAR巡航旨在评估MAR在塑造深海生物地理学纬向和跨大西洋模式、深海巨型生物群落的连接性方面所扮演的角色。此次探险由Eurofleets+海洋计划以及H2020欧洲项目iAtlantic资助，并由亚速尔大学（葡萄牙）牵头，与葡萄牙水文局和波尔图大学、奥尔胡斯大学（丹麦）、英国国家海洋研究中心、德国Geomar、挪威卑尔根大学博物馆、俄罗斯PP Shirshov海洋研究所以及巴西瓦莱杜伊塔雅伊大学共同协作完成。在19个站点进行了垂直CTD海鸟SBE 32/罗塞特剖面测量，以生成声速剖面（见表1），主要在MAR的北端以及亚速尔群岛专属经济区内进行。“.cnv”文件包含了使用“平均取值”方法对声速数据进行分箱，深度间隔为1米的声速数据。