Water physics and chemistry data from bottle casts from the AQUALAB from 14 October 1968 to 11 December 1968 (NODC Accession 7100270)

Water physics and chemistry data were collected from bottle casts from the AQUALAB from 14 October 1968 to 11 December 1968. Data were submitted by the Southern Maine Vocational Tech Institute. Data were processed by NODC to the NODC standard F004 Water Physics and Chemistry format. Full format description is available from NODC at www.nodc.noaa.gov/General/NODC-Archive/f004.html.

The F004 format is used for data from measurements and analyses of physical and chemical characteristics of the water column. Among chemical parameters that may be recorded are salinity, PH, and concentration of oxygen, ammonia, nitrate, phosphate, chlorophyll, and suspended solids. Physical parameters that may be recorded include temperature, density (sigma-t), transmissivity, and current velocity (east-west and north-south components). Cruise and station information, including environmental conditions of the study site at the time of observations, is also included.

1968年10月14日至1968年12月11日，研究团队通过AQUALAB设备的采水瓶剖面采样获取海水理化数据。该数据集由南缅因州职业技术学院提交，后经国家海洋数据中心（National Oceanographic Data Center，NODC）处理为NODC标准F004海水理化数据格式。完整格式说明可从NODC官网https://www.nodc.noaa.gov/General/NODC-Archive/f004.html获取。

F004格式适用于存储水柱物理与化学特征的测量及分析数据。可记录的化学参数包含盐度、pH值、溶解氧、氨、硝酸盐、磷酸盐、叶绿素及悬浮固体浓度；可记录的物理参数包括温度、密度（σ-t）、透射率以及海流流速（东西向与南北向分量）。此外，数据集还涵盖调查航次与测站信息，其中包含观测时刻研究区域的环境状况。