Array of Ocean Bottom Tilt Current Meters: data from the EMSO-Azores observatory, 2016-2017

this dataset contains current data acquired between september 2016 and july 2017 using 2 tcm3 ocean bottom tilt current meters installed next to the tour eiffel and montségur hydrothermal vent sites.the tcm-3 ocean bottom tilt current meter from lowell instruments llc (north falmouth, ma, usa) measures current using the drag-tilt principle. the logger is buoyant and is anchored to the bottom via a short flexible tether. drag from moving water tilts the logger in the direction of flow. the logger’s accelerometer and magnetometer channels are used to record the amount of tilt and direction of tilt (compass bearing). the array comprised 3 currentmeters, deployed near the tour eiffel, montségur and white castle hydrothermal vent sites (the instrument at white castle did not recover data). the array is not connected to an energy node. the currentmeter's internal clocks are set to utc time before deployment. clock drift after recovery is not implemented in data but added as metadata in the file "sites and sensor metadata".

本数据集收录了2016年9月至2017年7月期间收集的实时数据，数据采集自位于埃菲尔铁塔及蒙塞古尔地热喷口附近的2台TCM-3海底倾斜流速仪。TCM-3海底倾斜流速仪由洛厄尔仪器公司（位于美国马萨诸塞州北福尔茅斯）制造，采用拖曳倾斜原理测量流速。该记录仪具有浮力，并通过一段短而柔韧的系绳锚定于海底。流动的水对记录仪产生的阻力使其朝向流速方向倾斜。记录仪的加速度计和磁力计通道被用于记录倾斜量及其倾斜方向（罗盘方位）。该阵列由3台流速仪组成，分别部署于埃菲尔铁塔、蒙塞古尔及白城堡地热喷口附近（白城堡的仪器未能恢复数据）。该阵列未与能源节点连接。在部署前，流速仪的内部时钟已设置为协调世界时（UTC）。数据恢复后的时钟漂移未在数据中体现，而是作为元数据添加至名为“站点与传感器元数据”的文件中。