Oceanographic Station Data from bottle casts from the OCONOSTOTA as part of the International Decade of Ocean Exploration (IDOE) from 06 January 1976 to 14 December 1976 (NODC Accession 7700612)

Oceanographic Station Data were collected from bottle casts from the OCONOSTOTA from 06 January 1976 to 14 December 1976. Data were collected by the Moss Landing Marine Laboratories (MLML) as part of the International Decade of Ocean Exploration (IDOE). Data were processed by NODC to the NODC standard Oceanographic Station Data (SD2) format. Full format description is available from NODC at www.nodc.noaa.gov/General/NODC-Archive/sd2.html.

The Oceanographic Station Data format contains physical-chemical oceanographic data recorded at discrete depth levels. Most of the observations were made using multi-bottle Nansen casts or other types of water samplers. A small amount (about 5 percent) were obtained using electronic CTD conductivity-temperature-depth) or STD (salinity-temperature-depth) recorders. The CTD/STD data were reported to NODC at depth levels equivalent to Nansen cast data, however, and have been processed and stored the same as the Nansen data. Cruise information (e.g., ship, country, institution), position, date, and time, and reported for each station. The principal measured parameters and temperature and salinity , but dissolved oxygen, phosphate, total phosphorus, silicate, nitrate, nitrite, and pH may be reported. Meteorological conditions at the time of the cast (e.g., air temperature and pressure, wind, waves) may also be reported, as well as auxiliary data such as water color (Forel-Ule scale), water transparency (Secchi disk depth), and depth to bottom. Values of density (sigma-t), sound velocity, and dynamic depth anomaly are computed from measured parameters. Each station contains the measurements taken at the observed depth levels, but also includes data values interpolated to a set of standard depth levels.

本海洋站数据集采集自1976年1月6日至1976年12月14日期间，由OCONOSTOTA号开展的采水器站位（bottle casts）作业获取。该数据集由莫斯兰丁海洋实验室（Moss Landing Marine Laboratories, MLML）作为国际海洋勘探十年计划（International Decade of Ocean Exploration, IDOE）的项目内容之一完成采集。数据集由国家海洋数据中心（National Oceanographic Data Center, NODC）按照NODC标准海洋站数据（SD2）格式进行处理。完整的格式说明可通过NODC官网www.nodc.noaa.gov/General/NODC-Archive/sd2.html获取。

海洋站数据格式包含在离散深度层级采集的物理化学海洋学数据。绝大多数观测采用多瓶南森采水器站位或其他类型的水体采样器完成，仅约5%的观测数据通过电子温盐深仪（Conductivity-Temperature-Depth, CTD）或盐温深仪（Salinity-Temperature-Depth, STD）记录仪获取。不过，CTD/STD数据按照与南森采水器站位数据一致的深度层级上报至NODC，其处理与存储流程与南森采水器数据完全一致。每个站位均附带航行信息（如作业船只、所属国家、研究机构）、站位坐标、观测日期与时间等元数据。核心观测参数为温度与盐度，同时可记录溶解氧、磷酸盐、总磷、硅酸盐、硝酸盐、亚硝酸盐及pH值等指标。采样时的气象条件（如气温、气压、风向风速、海浪情况）同样可被记录，同时附带辅助观测数据，包括水体颜色（福勒-于勒色标，Forel-Ule scale）、水体透明度（塞氏盘深度，Secchi disk depth）及水深等。研究人员可通过实测参数计算得到密度距平（σ-t）、声速及动态深度异常值。每个站位既包含实测深度层级的观测数据，同时也附带经过插值得到的标准深度层级数据集。