Dissolved chloride measurements of marine sediment from Long Core Expedition KN195-03

Abstract: The KN195-03 research cruise on board the R/V Knorr (Chief scientist Steven D’Hondt) took place in January-February 2009 and had as primary objective to test and refine quantitative models for the magnitude and geographic distribution of subseafloor biomass and organic-fueled subseafloor respiration. Sediment cores were taken at thirteen sites across the equatorial Pacific and the North Pacific Gyre. Knowledge of the chemical composition of the porewater throughout the collected cores is fundamental to answer the driving research questions of this scientific expedition. The shipboard geochemistry laboratory generated interstitial waters by squeezing 597 individual samples, and by extracting an additional 153 solutions by Rhizon sampling. Due to the time needed to analyze this very high number of samples, not all were analyzed for each dissolved constituent. We present here the shipboard porewater chloride concentration dataset measured by ion chromatography.摘要：本研究依托R/V Knorr号科考船执行的KN195-03研究航次（首席科学家为Steven D’Hondt）于2009年1—2月开展，核心目标为测试并优化用于描述海底深部生物质丰度、地理分布以及有机质驱动的海底深部呼吸作用的定量模型。研究团队在赤道太平洋与北太平洋环流区的13个站位采集了沉积物岩芯。明晰所采集全部岩芯的孔隙水化学组成，是解答本次科考核心研究问题的基础前提。船载地球化学实验室通过挤压法获取了597个独立样品的间隙水，并通过Rhizon采样法额外获得153份溶液。鉴于分析海量样品所需耗时较长，并非所有样品均完成了各溶解组分的检测。本文呈现了通过离子色谱法（ion chromatography）测得的船载孔隙水氯离子浓度数据集。