Continuous soil temperature, specific conductance, and volumetric water content measurements from the Water Track B Active Layer Monitoring Station (ALMS06), 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 Water Track B (ALMS06).

作为麦克默多干谷长期生态研究（Long Term Ecological Research, LTER）项目的组成部分，科研人员于南极洲泰勒谷全境布设5座活动层监测站（Active Layer Monitoring Stations, ALMSs），旨在支撑围绕土壤热湿动态的全新研究方向——该动态或调控本生态系统的栖息地条件以及动物类群对季节与年度冻融循环的响应。其中2座监测站布设于溪流周边（格林溪、冯·盖拉德溪），传感器沿活动层布设，从河道深槽延伸至岸线及外侧干土区域。另有2座监测站布设于水迹带周边（沃姆赫德溪、B水道），这类区域为冰雪融水形成的零级汇水区，几乎无地表径流。剩余1座监测站布设于干土区域（F6），作为环境对照站点。活动层监测站可在水岸至干土的多个点位，沿活动层（从土壤表层至永冻层顶面）采集土壤温度、土壤含水率（以体积含水率计，VWC）以及比电导（以电导率计，EC）数据。本数据包包含B水道处活动层监测站（ALMS06）的观测数据。