نتایج جستجو برای: snowline

تعداد نتایج: 133  

2014
Emrys Phillips Andrew Finlayson Tom Bradwell Jez Everest Lee Jones

Over the past two decades Iceland’s glaciers have been undergoing a phase of accelerated retreat set against a backdrop of warmer summers and milder winters. This paper demonstrates how the dynamics of a steep outlet glacier in maritime SE Iceland have changed as it adjusts to recent significant changes in mass balance. Geomorphological evidence from Falljökull, a high-mass turnover temperate g...

Journal: :Environmental science & technology 2014
Emily C Lawson Maya P Bhatia Jemma L Wadham Elizabeth B Kujawinski

Runoff from glaciers and ice sheets has been acknowledged as a potential source of bioavailable dissolved organic matter (DOM) to downstream ecosystems. This source may become increasingly significant as glacial melt rates increase in response to future climate change. Recent work has identified significant concentrations of bioavailable carbon and iron in Greenland Ice Sheet (GrIS) runoff. The...

2004
Gheorghe Stancalie Simona Catana Anisoara Iordache

The paper describes the working methods developed in the Remote Sensing Lab of the National Institute of Meteorology and Hydrology in Bucharest and the obtained results for: basin snowcover areal extent and snowline elevation determination, new snowfalls identification, melting zones discrimination, snowpack water volume determination, snowcover depletion curves, etc. The method for evaluation ...

2004
Jessica D. Lundquist Michael Dettinger

Hourly streamflow timing, as revealed by diurnal fluctuations in discharge in snowfed watersheds, provides a new tool for understanding transport times and processes in river basins. Travel time delays at different basin scales were measured in nested subbasins (6 to 775 km) of the Tuolumne River in Yosemite National Park throughout the spring 2002 and 2003 melt seasons. The travel time increas...

2012
Andrew J. King Emily C. Farrer Katharine N. Suding Steven K. Schmidt

Plants and soil microorganisms interact to play a central role in ecosystem functioning. To determine the potential importance of biotic interactions in shaping the distributions of these organisms in a high-alpine subnival landscape, we examine co-occurrence patterns between plant species and bulk soil bacteria abundances. In this context, a co-occurrence relationship reflects a combination of...

Journal: :Remote Sensing 2016
Benjamin Aubrey Robson Daniel Hölbling Christopher Nuth Tazio Strozzi Svein Olaf Dahl

In this paper, we semi-automatically classify clean and debris-covered ice for 145 glaciers within Hohe Tauern National Park in the Austrian Alps for the years 1985, 2003, and 2013. We also map the end-summer transient snowline (TSL), which approximates the annual Equilibrium Line Altitude (ELA). By comparing our results with the Austrian Glacier Inventories from 1969 and 1998, we calculate a m...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Oliver Korup David R Montgomery Kenneth Hewitt

Despite longstanding research on the age and formation of the Tibetan Plateau, the controls on the erosional decay of its margins remain controversial. Pronounced aridity and highly localized rock uplift have traditionally been viewed as limits to the dissection of the plateau by bedrock rivers. Recently, however, glacier dynamics and landsliding have been argued to retard headward fluvial eros...

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