Fox Den Lake bed water temperature, Northwest Seward Peninsula, Alaska, 2009-2013

Fox Den Lake (66.558765°, -164.456696) bed water temperature 2009-2013 measured at 1.5 meters (m). The lake bed temperature data was collected to study the mean annual bottom temperature of thermokarst lakes on the Seward Peninsula, Alaska and the effect of surface waterbodies on the underlying permafrost terrain. Lake temperature data loggers were attached to a 5 pound weight plate that anchored them to the lake bed. A line and buoy were attached the weight plate to facilitate recovery of the sensor for download and maintenance. We deployed an Onset HOBO U020-001-02 water level logger to record water level and temperature in the middle of Fox Den lake between June 2009 and July 2013. Data were recorded on an hourly basis. Fox Den lake was selected as a measurement site because the lake depth is near the threshold for lake ice freezing to the bottom.

本数据集为狐狸穴湖（Fox Den Lake，坐标66.558765°，-164.456696）2009年至2013年间于1.5米水深处采集的湖底水温数据。本次湖底水温数据采集工作旨在研究阿拉斯加州苏厄德半岛上热融湖塘（thermokarst lakes）的年平均湖底温度，以及地表水体对下伏多年冻土区地形的影响。湖温数据记录仪被固定于5磅配重盘上，以此将记录仪锚定至湖床；配重盘还系有缆绳与浮标，便于回收传感器以开展数据下载与维护作业。我们于2009年6月至2013年7月在狐狸穴湖湖心部署了一台Onset HOBO U020-001-02型水位记录仪，用于同步记录水位与水温，数据采集频率为每小时1次。选取狐狸穴湖作为监测站点的原因在于，其水深接近湖冰完全冻结至湖底的临界阈值。