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|Resource type:||Composite Resource|
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|Created:||Jul 26, 2019 at 8:23 p.m.|
|Last updated:|| Jul 26, 2019 at 8:50 p.m.
|Citation:||See how to cite this resource|
|Content types:||Single File Content|
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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).
Resource Level Coverage
Readme file of Metadata to go along with Aufies Data: File: Location Data For Kuparuk Aufeis Instruments.xlsx This file contains high-resolution GPS location data for each of the wells that were installed by hand in the aufeis field. File: Kup Aufeis met station data.xlsx This file contains high-frequency meteorological data from a met station that was deployed adjacent to the aufeis field. All instruments were Onset Hobo instruments. File: Stream Channel Data.xlsx This file contains dissolved oxygen and water temperature data from locations in the stream channel that runs throug the aufeis field. Instruments deployed were MiniDOTs. File: Kup Aufeis Well Data.xlsx This file contains 46 data sheets, each with absolute pressure and temperature from Hobo water pressure loggers deployed in each well. A few of these loggers failed or could not be retrieved (see notes in first sheet). All instruments were Onset Hobo U20 water pressure loggers.
This resource was created using funding from the following sources:
|Agency Name||Award Title||Award Number|
|National Science Foundation||Collaborative Research: Arctic Oases - How does the delayed release of winter discharge from aufeis affect the ecosystem structure and function of rivers?||1504453|
People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.
|Alex Huryn||University of Alabama|
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.http://creativecommons.org/licenses/by/4.0/