Frozen debris lobes (FDLs) are slow-moving landslides in permafrost, many of which are present within the Dalton Highway corridor in the Brooks Range of Alaska. During this phase of the research, we continued our investigations of FDL-A (the closest to the Dalton Highway), and extended the research to include monitoring of seven additional FDLs. The investigated FDLs move at a variety of rates from less than a meter per year to 20 m per year. All of the FDLs investigated during this phase of research have characteristics of increasing instability. As analysis of subsurface data from FDL-A indicates, the movement of FDLs is temperature-dependent, which suggests the need for ongoing monitoring as temperature and precipitation in the area change in the future. Many FDLs are located uphill of important infrastructure within the State of Alaska. Changes within these permafrost features may yield insight into how frozen slopes throughout the State respond to changing climate. We recommend continued annual measurements of the surfaces of the eight investigated FDLs, additional drilling and geophysical surveys of FDL-A for better subsurface characterization, and development of a slope stability model that incorporates temperature effects.
This bibliography represents a collection of 1650 bibliographic citations on remote sensing of the physical characteristics of the Earth. This bibliog...
Eastern Washington Intermodal Transportation Study
1995-04-01
Abstract:
This study examined the importance of the U.S. 395 corridor area for local and regional commerce. The analysis focuses on the use and importance of th...
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