Porewater geochemistry from sediment pushcores collected by ROV Doc Ricketts from Southern California Seeps in May 2021

This dataset provides geochemical data (major ions) for porewaters from sediment pushcores collected by a remotely-operated vehicle (ROV) deployed from the R/V Western Flyer in May 2021 (WF05-21) at the Del Mar and Santa Monica Seeps and in Newport Canyon, California, USA. Cores were sectioned into 1-3 centimeter (cm) horizons, and porewater was extracted shipboard using an argon-pressurized squeezer. Porewater samples were frozen at sea and thawed just before analysis. This dataset reports concentrations of fluoride, acetate, formate, chloride, bromide, nitrate, sulfate, thiosulfate, and phosphate anions and lithium, sodium, potassium, magnesium, and calcium cations. Measurements were made using the Thermo Dual Dionex Integrion HPIC ion chromatography system with either a 250-millimeter (mm) Dionex IonPac AS19-4um column (anions) or a 250 mm Dionex IonPac CS16-4um column (cations), in the Resnick Water and Environment Laboratory at the California Institute of Technology (Caltech).本数据集提供了2021年5月由搭载于R/V Western Flyer号研究船的远程操作潜水器（remotely-operated vehicle, ROV）采集的沉积物活塞岩心孔隙水的地球化学数据（主要离子组分），采样点位位于美国加利福尼亚州的德尔马、圣莫尼卡冷泉以及纽波特峡谷，对应航次编号为WF05-21。岩心被切割为1至3厘米（centimeter, cm）的分层段，孔隙水于船上采用氩气加压压榨器进行提取。孔隙水样品在海上进行冷冻保存，并于分析前即刻解冻。本数据集记录了氟离子、乙酸根、甲酸根、氯离子、溴离子、硝酸根、硫酸根、硫代硫酸根与磷酸根等阴离子，以及锂离子、钠离子、钾离子、镁离子与钙离子等阳离子的浓度。所有检测均在美国加州理工学院（California Institute of Technology, Caltech）的雷斯尼克水与环境实验室完成，使用赛默飞Dionex Integrion HPIC双系统离子色谱仪，阴离子检测采用250毫米（millimeter, mm）Dionex IonPac AS19-4um色谱柱，阳离子检测则采用250 mm Dionex IonPac CS16-4um色谱柱。