Kuparuk Aufeis Data - Locations, Wells, Met, and Stream data (2016-2017)

The goal of this study is to assess the potential effects of aufeis (i.e., river icings) on the structure and function of arctic river-floodplain ecosystems in a warming climate. Aufeis are massive accumulations of ice that are features of many arctic rivers. They form during freeze-up when thickening surface ice causes local overflows. Successive cycles of overflow result in accumulations of enormous volumes of ice, with aufeis on some Alaskan rivers attaining thicknesses of 3-5 m, covering more than 20 square km, and storing as much as 30% of the annual river discharge. Although aufeis have been studied by hydrologists and are known to be required for winter and spawning habitat for some fish, understanding of their ecology is poor. We propose that aufeis be viewed as winter oases due to their wet bases that supply water and heat to otherwise frozen habitats. Aufeis function as summer oases by providing a stable supply of water to hyporheic and downstream habitats.

These data come from intensive study of the Kuparuk River Aufeis field. We collected stage and water temperature data in 50 wells that were ~1m deep, and stage, temperature, electrical conductivity, and dissolved oxygen data from several points in the surface channel of the aufeis field. Where we could deploy loggers, we have continuous data collection.

NOTE that these data are identical to those uploaded to the Arctic Data Center database (sometime in July or August 2019).

本研究旨在评估在气候变化背景下，aufeis（即河流冰层）对北极河流-河漫滩生态系统结构和功能潜在影响的评估。aufeis是许多北极河流的特征性现象，其形成于冻结期间，由于表面冰层加厚导致的局部溢出。连续的溢出周期导致大量冰块的累积，某些阿拉斯加河流上的aufeis厚度可达3-5米，覆盖面积超过20平方公里，储存的年度河流径流量高达30%。尽管水文学家已对aufeis进行了研究，并且已知其为某些鱼类冬季栖息地和产卵场所所必需，但其生态学认识仍然匮乏。我们提出将aufeis视为冬季绿洲，由于它们的湿润底部为其他冻结的生境提供了水和热量。aufeis作为夏季绿洲，通过为地下河和下游生境提供稳定的水源而发挥作用。这些数据来源于对库帕鲁克河aufeis现场的深入研究。我们在约1米深的50个井中收集了水位和水温数据，并在aufeis场地表水道的几个点上收集了水位、温度、电导率和溶解氧数据。在可部署记录仪的地方，我们进行了连续数据收集。

请注意，这些数据与上传至北极数据中心数据库的数据相同（2019年7月或8月）。