Continuous soil temperature, specific conductance, and volumetric water content measurements from the Green Creek Active Layer Monitoring Station (ALMS04), McMurdo Dry Valleys, Antarctica (2014-2021, ongoing)

As part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project, five Active Layer Monitoring Stations (ALMSs) were established throughout Taylor Valley, Antarctica to support new research foci around the thermal-moisture dynamics of soils that may control habitat conditions and faunal responses to seasonal and annual freezing cycles in this ecosystem. Two ALMSs were established adjacent to streams (Green Creek, Von Guerard Stream), with sensors installed through the active layer from the thalweg out to the shoreline and dry soil beyond. Two ALMSs were similarly established adjacent to water tracks (Wormherder Creek, Water Track B) that are zero-order drainages of snow and ice melt that rarely have surface flow. The remaining station was established in dry soil (F6) to serve as an ambient control. ALMSs measure soil temperature, soil moisture (as volumetric water content; VWC), and specific conductance (as electrical conductivity; EC) through the active layer (soil surface down to the frost table) at several locations from the water’s edge to dry soils. This data package contains measurements from the Active Layer Monitoring Station at Green Creek (ALMS04).

本数据集隶属于麦克默多干谷长期生态研究（McMurdo Dry Valleys Long Term Ecological Research, LTER）项目，研究团队在南极洲泰勒谷范围内布设了5套活动层监测站（Active Layer Monitoring Stations, ALMSs），以支撑围绕土壤热湿动态的全新研究重点——该动态可能调控本生态系统中影响生境条件以及动物群落对季节与年度冻融循环响应的关键过程。其中2套监测站毗邻溪流（格林溪（Green Creek）、冯·盖拉德溪（Von Guerard Stream）），传感器沿活动层从深泓线向岸线及外侧干土区域布设。另有2套监测站设置在水迹带附近（沃姆赫德溪（Wormherder Creek）、水迹带B（Water Track B）），这类区域属于鲜有地表径流的冰雪融水零级汇水区。剩余1套监测站设于干土区域（F6），作为本底对照站点。活动层监测站可在从水边至干土的多个点位，沿活动层（从土壤表面至冻层顶板（frost table））测定土壤温度、土壤体积含水量（volumetric water content, VWC）以及比电导率（以电导率EC计）。本数据集包含格林溪活动层监测站（ALMS04）的观测数据。