Hydrographic and current velocity data (CTD and LADCP) around the Gazul mud volcano during the MEDWAVES (September 2016)@en

The main objectives of the physical oceanography team during the MEDWAVES-ATLAS cruise were to characterize the hydrographic conditions and the structure of oceanic flow to determine the role of the Mediterranean Water in the circulation, over, and around in the Gazul mud volcano. To achieve the objectives a set of hydrographic stations were carried out to determinate the hydrographic conditions, the geostrophic circulation and to identify the water masses in the area. In each one of these hydrographic stations, a SBE9 s/n 0851 working at 24 Hz, coupled with a SBE11 (deck Unit) and a SBE32, with 24 bottles of 12 litres, was lowered at less than 55m/min. Besides, a Dual RDI Workhorse 300 khz (slave and master) Lowered Acoustic Doppler Current Profiler was used in each station to measure ocean currents.本次MEDWAVES-ATLAS航次中，物理海洋学团队的核心目标为表征加苏尔泥火山（Gazul mud volcano）上方及周边海域的水文状况与大洋流场结构，以明确地中海水团在该区域环流中的作用。为达成上述研究目标，团队布设了多组水文观测站位，用于测定该海域的水文条件、地转环流并识别局地水团。在每个水文站位作业过程中，均采用工作频率为24 Hz的SBE9 序列号0851（SBE9 s/n 0851）设备，该设备与SBE11甲板单元（SBE11 deck Unit）及SBE32设备相连，配套24个12升采水器，以低于55米/分钟的速度下放至海中。此外，每个站位均部署了主从式RDI Workhorse 300 kHz下放式声学多普勒流速剖面仪（Dual RDI Workhorse 300 khz Lowered Acoustic Doppler Current Profiler），用于精准测量海流参数。