Dissolved concentrations of rare earth elements (including Y) from Leg 1 of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018

This dataset reports dissolved concentrations of rare earth elements (including Y) from Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018 along 152 W. The data include dissolved concentrations from bottle and towed fish samples. Including the data from Leg 2 (Hilo, HI to Papeete, French Polynesia), the PMT sampled margin interactions, subarctic high nutrient low chlorophyll waters, the oldest deep water in the world's oceans, the distal ends of hydrothermal plumes (Juan de Fuca Ridge and East Pacific Rise) and oxygen minimum zones, equatorial upwelling, and oligotrophic waters in the South Pacific gyre at 20°S. The rare earth element data are pertinent for studies of removal and internal cycling of trace elements, tracing material inputs, and understanding of conservative vs non-conservative tracer distributions.

本数据集报告了2018年9月至10月期间，美国GEOTRACES计划太平洋经向断面（Pacific Meridional Transect，PMT）航次（GP15，RR1814）Leg1段（华盛顿州西雅图至夏威夷希洛）沿152°W经线采集的稀土元素（包括Y）溶解浓度数据，该航次由R/V Roger Revelle号执行。
数据包含瓶样和拖曳鱼探仪（towed fish）样品的溶解浓度。
包括Leg2段（夏威夷希洛至法属波利尼西亚帕皮提）的数据在内，PMT航次采样覆盖了陆缘相互作用（margin interactions）、亚北极高营养盐低叶绿素水域（subarctic high nutrient low chlorophyll waters）、全球海洋中最古老的深层水、热液羽流（hydrothermal plumes）远端（胡安·德富卡海岭和东太平洋海隆）、氧最小层（oxygen minimum zones）、赤道上升流（equatorial upwelling）以及南太平洋环流20°S处的寡营养水域（oligotrophic waters）。
这些稀土元素数据适用于研究微量元素的去除与内部循环、示踪物质输入，以及理解保守性与非保守性示踪剂（conservative vs non-conservative tracers）的分布特征。