Current meter components and other data from FIXED PLATFORMS from NE Pacific (limit-180) in support of the VENTS program from 1992-05-27 to 1993-08-15 (NODC Accession 9400038)

Current meter components data were collected from FIXED PLATFORMS in the NE Pacific (limit-180) from 27 May 1992 to 15 August 1993. Data were collected by the Pacific Marine Environmental Laboratory (PMEL) in support of the VENTS program. Data were processed by NODC to the NODC standard F015 Current Meter Components format. Full format description is available from NODC at www.nodc.noaa.gov/General/NODC-Archive/f015.html.

The F015 format contains time series measurements of ocean currents. These data are obtained from current meter moorings and represent the Eulerian method of current measurement, i.e., the meters are deployed at a fixed point and measure flow past a sensor. Position, bottom depth, sensor depth and meter characteristics are reported for each station. The data record includes values of east-west (u) and north-south (v) current vector components at specified date and time. Current direction is defined as the direction toward which the water is flowing with positive directions east and north. Data values may be subject to averaging or filtering and are typically reported at 10 - 15 minute time intervals. Water temperature, pressure and conductivity or salinity may also be reported. A text record is available for optional comments.

本数据集的海流计分量数据采集自东北太平洋（经度限定为西经180°以东海域）的固定平台，采集时段为1992年5月27日至1993年8月15日。该数据由美国太平洋海洋环境实验室（Pacific Marine Environmental Laboratory, PMEL）为支持VENTS项目采集。数据已由美国国家海洋数据中心（National Oceanographic Data Center, NODC）按照NODC标准F015海流计分量格式完成处理。完整格式说明可通过NODC官网https://www.nodc.noaa.gov/General/NODC-Archive/f015.html查阅。

F015格式存储的是海洋环流的时间序列观测数据。此类数据源自海流计锚系观测，采用欧拉法（Eulerian method）进行海流测量，即传感器部署于固定点位，监测流经传感器的流体运动。每个测站均会记录站位位置、海底水深、传感器布设深度以及海流计的相关参数信息。数据记录包含指定日期与时刻下的东西向（u分量）与南北向（v分量）海流矢量分量数值。海流流向定义为水体流动的指向，以东向与北向为正方向。数据值可经过平均或滤波处理，通常以10至15分钟的时间间隔进行记录上报。数据中还可附带记录海水温度、压强、电导率或盐度等参数。此外还提供文本记录字段，用于填写可选备注信息。