Shackleton Glacier region water-soluble salt isotopes

Soil samples were collected from the Shackleton Glacier region, located in the Queen Maud Mountains during the 2017-2018 austral summer. A subset of 27 samples were analyzed for stable isotopes of S, N, C, and O in nitrate, sulfate, and (bi)carbonate. ). δ15N-NO3 values ranged from -47.8 to 20.4‰ and, while all Δ17O-NO3 values are positive, they ranged from 15.7 to 45.9‰. δ34S-SO4 and δ18O-SO4 values ranged from 12.5 and 17.9‰ and -14.5 to -7.1‰, respectively. Total inorganic carbon isotopes ((bi)carbonate) in bulk soil samples ranged from 0.2 to 8.5‰ for δ13C and -38.8 to -9.6‰ for δ18O.

本研究于2017-2018年南半球夏季，在毛德皇后山脉（Queen Maud Mountains）境内的沙克尔顿冰川（Shackleton Glacier）区域采集土壤样本。选取其中27份子样本，针对硝酸盐、硫酸盐以及碳酸盐及碳酸氢盐中的硫、氮、碳、氧稳定同位素开展分析。结果显示，硝酸盐的δ¹⁵N值范围为-47.8‰至20.4‰；所有硝酸盐的Δ¹⁷O值均为正值，区间为15.7‰至45.9‰。硫酸盐的δ³⁴S值与δ¹⁸O值分别处于12.5‰至17.9‰、-14.5‰至-7.1‰区间。整体土壤样品的总无机碳同位素（碳酸盐及碳酸氢盐）中，δ¹³C值范围为0.2‰至8.5‰，δ¹⁸O值范围为-38.8‰至-9.6‰。