scholarly journals Using Stereo Satellite Imagery to Account for Ablation, Entrainment, and Compaction in Volume Calculations for Rock Avalanches on Glaciers: Application to the 2016 Lamplugh Rock Avalanche in Glacier Bay National Park, Alaska

2018 ◽  
Vol 123 (4) ◽  
pp. 622-641 ◽  
Author(s):  
Erin K. Bessette-Kirton ◽  
Jeffrey A. Coe ◽  
Wendy Zhou
Keyword(s):  
Satellite Imagery ◽  
National Park ◽  
Rock Avalanche ◽  
Glacier Bay ◽  
Volume Calculations ◽  
Rock Avalanches ◽  
Glacier Bay National Park

Interactions between instream wood and hydrogeomorphic development within recently deglaciated streams in Glacier Bay National Park, Alaska

Geomorphology ◽  
2011 ◽  
Vol 130 (3-4) ◽  
pp. 208-220 ◽  
Author(s):  
Megan J. Klaar ◽  
David F. Hill ◽  
Ian Maddock ◽  
Alexander M. Milner
Keyword(s):  
National Park ◽  
Glacier Bay ◽  
Glacier Bay National Park ◽  
Instream Wood

Emplacement dynamics of supraglacial rock avalanches: details from the 2016 Lamplugh event, Alaska

2020 ◽  
Author(s):  
Anja Dufresne ◽  
Gabriel Wolken ◽  
Clément Hibert ◽  
Erin Bessette-Kirton ◽  
Jeffrey Coe ◽  
...  
Keyword(s):  
Seismic Data ◽  
Granular Flow ◽  
Rock Avalanche ◽  
Strong Interactions ◽  
Low Friction ◽  
Field Surveys ◽  
Glacier Bay ◽  
Rock Avalanches ◽  
Digital Elevation ◽  
Stage 1

<p>In Glacier Bay Park and Preserve, Alaska, at least 25 rock avalanches occurred since the mid-1980s. The 2016 Lamplugh rock avalanche, with roughly 70 Mm<sup>3 </sup>deposit volume, is one of the larger events within the park. It originated from a north-facing bedrock ridge without any obvious trigger, and spread 10 km down Lamplugh Glacier. Based on field surveys, high-resolution digital elevation models, and continuous seismic data, we show that the emplacement dynamics of this supraglacial rock avalanche can be described by two distinct stages. Clear long-period seismic signals during Stage-1 record strong interactions of the rock avalanche debris with the ground, suggesting dynamic processes such as grain collisions and fragmentation ('active or dynamic emplacement' of a granular flow). During this first stage, the debris traveled about 5 km from the base of the slope; its deposit is thin and stretched with a dominant dry and flat area in the center, and has narrow raised margins. Stage-2 was essentially aseismic at long periods and dominated by low-friction sliding at slow deceleration rates ('passive sliding'). This sliding produced the distal roughly third of the total runout length where the deposit has a higher density of flowbands and more prominent, raised margins from entrainment and bulldozing of snow. The higher apparent mobility of supraglacial landslides (relative to their counterparts in other runout environments) may be explained by this two-stage model.</p>

Mapping Glacier Bay National Park, Alaska

2010 ◽  
pp. 29-42
Author(s):  
Tom Patterson
Keyword(s):  
National Park ◽  
National Park Service ◽  
Cruise Ship ◽  
Careful Planning ◽  
Glacier Bay ◽  
Braided Rivers ◽  
Glacier Bay National Park ◽  
Park Service ◽  
A Site ◽  
Shaded Relief

Making a National Park Service (NPS) visitor map of a large, famous park such as Glacier Bay involves careful planning and many people. Preliminary work on the Glacier Bay map required a site visit to Alaska, consultations with park staff, and observing visitors using maps on board a cruise ship. The paper examines various mountain-mapping challenges, including shaded relief, landcover, glaciers, fjord bathymetry, braided rivers, and place names. The paper then ties these strands together by discussing the design of the final brochure map.

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