Trace metal, ion, and nutrient concentrations in aeolian samples subjected to experimental freeze-thaw cycles, collected from Taylor Valley, McMurdo Dry Valleys, Antarctica (2013-2016)

This data package contains measurements of trace metal, ion, and nutrient concentrations in aeolian samples collected from several locations throughout Taylor Valley in the McMurdo Dry Valleys of Antarctica during the 2013-2014, 2014-2015, and 2015-2016 austral summers. Samples were collected by the McMurdo Dry Valleys Long Term Ecological Research Program (MCM LTER) using Big Spring Number Eight (BSNE) isokinetic wind samplers located at Explorer’s Cove, Lake Fryxell at F6, East Lake Bonney, and Taylor Glacier. Samples were then subjected to experimental freeze-thaw cycles in a controlled laboratory setting to simulate supraglacial weathering processes and then analyzed to understand how freeze-thaw cycles affect nutrient, ion, and trace metal concentrations over time.

本数据包包含2013-2014、2014-2015及2015-2016年南半球夏季（austral summers），于南极洲麦克默多干谷（McMurdo Dry Valleys）泰勒谷（Taylor Valley）多个采样点位采集的风成样品（aeolian samples）中痕量金属（trace metal）、离子（ion）及营养盐浓度的测定数据。样品采集工作由麦克默多干谷长期生态研究计划（McMurdo Dry Valleys Long Term Ecological Research Program, MCM LTER）完成，采用布设于探险家湾（Explorer’s Cove）、F6站点弗莱克塞尔湖（Lake Fryxell at F6）、东湖邦尼（East Lake Bonney）以及泰勒冰川（Taylor Glacier）的大弹簧八号（Big Spring Number Eight, BSNE）等动力风采样器（isokinetic wind samplers）采集样品。随后，采集得到的样品被置于可控实验室环境中开展冻融循环（freeze-thaw cycles）实验，以模拟冰面风化（supraglacial weathering）过程，并通过分析探究冻融循环随时间推移对营养盐、离子及痕量金属浓度的影响规律。