scholarly journals Creation of a full color geologic map by computer: A case history from the Port Moller project resource assessment, Alaska Peninsula: A section in Geologic studies in Alaska by the U.S. Geological Survey, 1988

1989 ◽  
Keyword(s):  
Case History ◽  
Resource Assessment ◽  
Geological Survey ◽  
Alaska Peninsula ◽  
Full Color ◽  
Geologic Map ◽  
The U.S

Historical Retreat of Alpine Glaciers in the Ahklun Mountains, Western Alaska

2015 ◽  
Vol 6 (1) ◽  
pp. 255-263
Author(s):  
Patrick Walsh ◽  
Darrell Kaufman ◽  
Tess McDaniel ◽  
Jai Chowdhry Beeman
Keyword(s):  
Average Rate ◽  
Aerial Imagery ◽  
Geological Survey ◽  
Aerial Photos ◽  
Alaska Peninsula ◽  
Mountain Glaciers ◽  
Alpine Glaciers ◽  
Current Century ◽  
The U.S ◽  
Southwestern Alaska

Abstract The Ahklun Mountains support the only extant glaciers in southwestern Alaska north of the Alaska Peninsula. The glaciers were originally mapped by the U.S. Geological Survey using photogrammetry methods based on 1972–1973 aerial photos. We surveyed for presence or absence of the glaciers by fixed-wing aircraft in 2006. Of 109 glaciers originally mapped, 10 (9%) had disappeared. Using aerial imagery of a subset of 76 glaciers at three time steps between 1957 and 2009, we determined the average rate of areal loss was 45% over 52 y. At this rate, it is likely that all Ahklun Mountain glaciers will be extinguished by the end of the current century.

scholarly journals Dr. John C. Reed, Jr.: Pioneering Geologist, Mountaineer, and Author of Creation of the Teton Landscape

2013 ◽  
Vol 36 ◽  
pp. 10-17
Author(s):  
Carol Frost ◽  
John Reed
Keyword(s):  
Geological Survey ◽  
Mountain Range ◽  
The Public ◽  
Geologic Map ◽  
Field Notes ◽  
Field Geology ◽  
The U.S

Few geologists today possess the mountaineering skills to study rocks exposed in the topographically challenging terrain of the Tetons. Even fewer can claim the accomplishment of making the first geologic map of an entire mountain range. One of these pioneering geologists is John C. Reed, Jr., who joined the U.S. Geological Survey in 1953, and who is now scientist emeritus at the U.S. Geological Survey in Denver (Figure 1). In addition to his field geology expertise, Dr. Reed also has a special talent for communicating complex geologic concepts to the public. The purpose of this project was to profile this pioneering mountaineer-geologist and accomplished writer, and to archive his maps, field notes, and photographs for use by future scientists and for the public, particularly park visitors.

Sign in / Sign up

Export Citation Format

Share Document