期刊
GEOPHYSICAL RESEARCH LETTERS
卷 49, 期 1, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2021GL095152
关键词
Gulf of Alaska; concentration-discharge; solutes
资金
- NSF [OIA-1757347]
- Sloan Indigenous Graduate Partnership Fellowship
- UC Berkeley Miller Institute
- UC President's Postdoctoral Fellowship
High-latitude glacierized coastal catchments of the Gulf of Alaska are experiencing rapid hydrologic changes due to climate change and glacial recession. These catchments deliver important nutrients to the marine environment, yet there is limited knowledge about the sediment and solute generation processes and total yields.
High-latitude glacierized coastal catchments of the Gulf of Alaska (GoA) are undergoing rapid hydrologic changes in response to climate change and glacial recession. These catchments deliver important nutrients in the form of both inorganic and organic matter to the nearshore marine environment, yet are relatively understudied with respect to characterization of the sediment and solute generation processes and total yields. Using multiple linear regression informed by Bayesian Information Criterion analysis we empirically demonstrate how watershed characteristics affect suspended sediment and solute generation as represented by concentration-discharge relationships. We find that watershed mean slope and relief control solute generation and that solute yields are influenced most by glacier coverage. We contribute a new flux and concentration-discharge based conceptualization for understanding solute cycles across a hydroclimatic gradient of GoA watersheds that can be used to better understand future watershed responses to rapid hydrologic change.
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