Thorium and Uranium Radioisotope Data from HLY-02-01. Version 1.0

This data set includes data corresponding to samples collected by the Moran Geochemistry Lab on the first leg of the SBI Phase II investigation in the Chukchi and Beaufort Seas from 09 May 2002 to 12 June 2002 aboard the U.S. Coast Guard Cutter (USCGC) Healy (WAGB-20). Data are organized by station and sample depth, with station position (latitude and longitude) also included.This data set includes the following radio-isotopes: 234Th, 228Th, and 238U. The thorium data includes dissolved, suspended particulate, and large particulate values in units of disintegrations per minute per liter (dpm/L). The uranium data were derived from salinity (salinity ppt * 0.069 dpm/ppt = 238U dpm/L ; Chen et al, 1986). This data set also includes values for large particulate organic carbon (POC) and large particulate organic nitrogen (PON) .

本数据集包含2002年5月9日至6月12日期间，美国海岸警卫队希利号（USCGC Healy, WAGB-20）执行楚科奇海与波弗特海SBI二期考察第一航次时，由莫兰地球化学实验室（Moran Geochemistry Lab）采集的样品对应数据。数据按站位及样品深度进行组织，同时包含站位坐标（纬度与经度）信息。本数据集涵盖以下放射性同位素：234Th、228Th及238U。其中钍系数据包含溶解态、悬浮颗粒物态及大颗粒物态的浓度值，单位为每分钟每升衰变数（disintegrations per minute per liter，dpm/L）。铀（238U）数据通过盐度计算得到，计算公式为：盐度（ppt）×0.069 dpm/ppt = 238U 浓度（dpm/L）；引用来源为Chen等（1986）。此外，本数据集还包含大颗粒有机碳（Particulate Organic Carbon, POC）及大颗粒有机氮（Particulate Organic Nitrogen, PON）的相关测定值。