Current meter data from moored current meter casts in the Columbia River estuary - Washington/Oregon as part of the Low Level Waste Ocean Disposal project from 1979-08-13 to 1984-09-27 (NODC Accession 9500016)

Current meter data were collected using moored current meter casts in the Columbia River estuary - Washington/Oregon from August 13, 1979 to September 27, 1984. Data were submitted by Oregon State University as part of the Low Level Waste Ocean Disposal project. Data were processed by NODC to the NODC standard Current Meter Data (F015) format. Full current meter moorings descriptions are available at http://www.nodc.noaa.gov/General/NODC-Archive/f015.html. The F015 format is used for time series measurements of ocean currents. These data are obtained from current meter moorings and represent 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 comprises 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 and negative directions west and south. 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.本数据集的海流计数据采集于1979年8月13日至1984年9月27日，观测区域为华盛顿州与俄勒冈州交界的哥伦比亚河河口，数据采集采用锚定海流计布设观测方式。数据由俄勒冈州立大学（Oregon State University）作为低放废物海洋处置项目（Low Level Waste Ocean Disposal project）的组成部分提交。国家海洋数据中心（National Oceanographic Data Center, NODC）已将该数据处理为NODC标准海流计数据（F015）格式。完整的锚定海流计观测说明可通过以下链接获取：http://www.nodc.noaa.gov/General/NODC-Archive/f015.html。 F015格式专用于海流时间序列测量。此类数据源自锚定海流计阵列，采用海流观测的欧拉法：即通过将海流计部署于固定点位，测量流经传感器的水流参数。每个测站均会记录站位坐标、海底水深、传感器布设深度以及海流计的设备特性参数。数据记录包含指定日期与时刻下的东西向（u）与南北向（v）海流矢量分量值。海流方向定义为水流流向，正方向为东、北，负方向为西、南。数据值可经过平均化或滤波处理，通常以10至15分钟的时间间隔进行观测记录。数据中还可包含海水温度、压力以及电导率或盐度参数。数据集附带文本记录字段，用于填写可选注释内容。