CTD and water column profiles collected aboard R/V Point Sur cruise PS19_14 in the Gulf of Mexico from 2019-01-26 to 2019-01-28

This dataset reports CTD and water column profiles near the GC-600 natural oil seep in the Gulf of Mexico aboard R/V Point Sur cruise PS19_14 in the Gulf of Mexico from 2019-01-26 to 2019-01-28. Water column profiles were collected at two sampling sites (GC-699, and GC-600) and the data include CTD, dissolved oxygen, Chlorophyll-a Dissolved Organic Matter (DOM) fluorescence (fDOM), altimeter, Photosynthetically Available Radiation (PAR) and Surficial PAR (SPAR). During this cruise, we performed a series of CTD casts in and around both sites to constrain water column structure and radium isotopes. The main objective of the cruise was to use the ROV Odysseus from Pelagic Research Services to directly sample hydrocarbons emanating from MegaPlume at GC-600 (27° 22.199'N 90° 34.262'W). During our time at sea, we further aimed to sample radium isotopes in the water column profiles. The R/V Point Sur cruise PS19_14 was led by chief scientist Dr. Richard Peterson.本数据集记录了2019年1月26日至2019年1月28日期间，搭载“Point Sur号”研究船（R/V Point Sur）执行航次PS19_14时，在墨西哥湾GC-600天然油渗漏点附近获取的温盐深剖面仪（CTD, Conductivity, Temperature, Depth）与水柱剖面数据。研究在两个采样站位（GC-699与GC-600）采集了水柱剖面数据，数据涵盖CTD、溶解氧、叶绿素a、溶解有机物（Dissolved Organic Matter, DOM）荧光（fDOM）、高度计、光合有效辐射（Photosynthetically Available Radiation, PAR）以及表层光合有效辐射（Surficial PAR, SPAR）。本航次期间，团队在两个站位及其周边开展了一系列CTD测站投放作业，以限定水柱结构与镭同位素分布特征。本航次的核心目标是借助远洋研究服务公司（Pelagic Research Services）的“奥德修斯号”遥控无人潜水器（ROV, Remotely Operated Vehicle），直接采集GC-600站位（27°22.199′N 90°34.262′W）巨羽流（MegaPlume）释放的烃类样本。科考期间，团队还额外旨在采集水柱剖面中的镭同位素样本。“Point Sur号”研究船航次PS19_14由首席科学家Richard Peterson博士领衔。