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，搭载于研究船"Point Sur"号的航次PS19_14在墨西哥湾GC-600天然油渗漏区附近获取的CTD（温盐深仪，Conductivity, Temperature, Depth）与水柱剖面数据。本次航次在两个采样站位（GC-699与GC-600）采集了水柱剖面数据，所获数据涵盖CTD、溶解氧、叶绿素a、溶解有机物（Dissolved Organic Matter, DOM）荧光（fDOM）、高度计数据、光合有效辐射（Photosynthetically Available Radiation, PAR）以及表层光合有效辐射（Surficial PAR, SPAR）。本次航次期间，研究团队在两个站位及其周边开展了多轮CTD剖面测量作业，以厘清水柱结构特征并限定镭同位素的分布规律。本航次的核心目标为借助Pelagic Research Services公司的ROV（遥控无人潜水器，Remotely Operated Vehicle）"Odysseus"号，直接采集GC-600站位（27°22.199'N，90°34.262'W）巨型羽状流（MegaPlume）所溢出的烃类物质。本次海上作业期间，研究团队还计划采集水柱剖面中的镭同位素样品。本航次由首席科学家Richard Peterson博士牵头。