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Aurora Australis Southern Ocean oceanographic (CTD) data, cruise au9301 (THIRST)

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Research Data Australia2024-08-17 收录
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https://researchdata.edu.au/aurora-australis-southern-au9301-thirst/2822718
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Oceanographic measurements were conducted north of Heard Island from August 1993 to October 1993. A total of 58 CTD (conductivity, temperature and depth) vertical profile stations were taken, most to near bottom. Niskin bottle water samples were collected for the measurement of salinity, dissolved oxygen, nutrients (phosphate, nitrate+nitrite, silicate), chlorofluorocarbons, helium, tritium, dissolved inorganic carbon, alkalinity, carbon isotopes, dissolved organic carbon, dimethyl sulphide/dimethyl sulphoniopropionate, iodate/iodide, oxygen 18, primary productivity, and biological parameters, using a 24 bottle rosette sampler. CTD salinity data have been calibrated against bottle samples. Upcast CTD burst data were no longer available, however comparison of bottle samples to CTD data from the equivalent downcast pressures gives a salinity accuracy of approximately 0.005 (PSS78). The bottle data file contains salinities and dissolved oxygens. Nutrient data exist only in files output from the laboratory analysis program 'DAPA', and are contained on floppy disks held by Andrew Forbes (CSIRO). Measurement and data processing techniques are described, and a summary of the data are presented in graphical and tabular form. The fields in this dataset are: oceanography ship station number date start time bottom time finish time cruise start position bottom position finish position maximum position bottom depth pressure temperature (T-90) salinity sigma-T specific volume anomaly geopotential anomaly dissolved oxygen fluorescence photosynthetically active radiation niskin bottle number

1993年8月至1993年10月,科研人员在赫德岛(Heard Island)北侧开展了海洋学观测作业。本次观测共布设58个CTD(电导率、温度与深度)垂直剖面测站,多数测站延伸至近底区域。研究采用搭载24瓶的罗式采水器(rosette sampler),通过尼斯金采水器(Niskin bottle)采集水样,用于测定盐度、溶解氧、营养盐(磷酸盐、硝酸盐+亚硝酸盐、硅酸盐)、氟氯烃、氦、氚、溶解无机碳、碱度、碳同位素、溶解有机碳、二甲基硫/二甲基巯基丙酸内盐、碘酸盐/碘化物、氧-18、初级生产力及各类生物学参数。 CTD盐度数据已通过采水器水样完成校准。尽管上行CTD快速采样(burst)数据现已无法获取,但通过将采水器水样与对应下行压力下的CTD数据进行比对,可得盐度精度约为0.005(PSS78)。本次采水器数据文件包含盐度与溶解氧数据。营养盐数据仅存储于实验室分析程序‘DAPA’导出的文件中,且由安德鲁·福布斯(Andrew Forbes)所在的澳大利亚联邦科学与工业研究组织(CSIRO)持有相关软盘。 本数据集对观测与数据处理技术进行了详细说明,并以图表与表格形式汇总了数据成果。 本数据集包含以下字段: 海洋学(oceanography)、航次船舶(ship)、测站编号(station number)、日期(date)、开始时间(start time)、近底时间(bottom time)、结束时间(finish time)、巡航航次(cruise)、起始位置(start position)、近底位置(bottom position)、结束位置(finish position)、最大位置(maximum position)、近底水深(bottom depth)、压力(pressure)、温度(T-90)、盐度(salinity)、σ-T值(sigma-T)、比容距平(specific volume anomaly)、位势距平(geopotential anomaly)、溶解氧(dissolved oxygen)、荧光强度(fluorescence)、光合有效辐射(photosynthetically active radiation)、尼斯金采水器瓶号(niskin bottle number)
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Australian Ocean Data Network
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