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AGU: Water Resources Research

 

Keywords

  • streamflow
  • trends
  • glaciers
  • Alaska
  • Pacific Decadal Oscillation

Index Terms

  • Hydrology: Hydroclimatology
  • Hydrology: Time series analysis
  • Global Change: Regional climate change
  • Cryosphere: Glaciers
  • Cryosphere: Snowmelt

Abstract

WATER RESOURCES RESEARCH, VOL. 45, W06502, 5 PP., 2009
doi:10.1029/2008WR007575

Streamflow changes in Alaska between the cool phase (1947–1976) and the warm phase (1977–2006) of the Pacific Decadal Oscillation: The influence of glaciers

Glenn A. Hodgkins

U.S. Geological Survey, Augusta, Maine, USA

Streamflow data from 35 stations in and near Alaska were analyzed for changes between the cool phase (1947–1976) and the warm phase (1977–2006) of the Pacific Decadal Oscillation. Winter, spring, and summer flow changes and maximum annual flow changes were different for glaciated basins (more than 10% glacier-covered area) than for nonglaciated basins, showing the influence of glaciers on historical streamflow changes. Mean February flows, for example, increased for the median of available stations by 45% for glaciated basins and by 17% for nonglaciated ones.

Received 7 November 2008; accepted 3 April 2009; published 20 June 2009.

Citation: Hodgkins, G. A. (2009), Streamflow changes in Alaska between the cool phase (1947–1976) and the warm phase (1977–2006) of the Pacific Decadal Oscillation: The influence of glaciers, Water Resour. Res., 45, W06502, doi:10.1029/2008WR007575.

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