Columbia Glacier 2001
Clinton Bailey, College of Wooster
In the summer of 2001, I had the privilege of traveling with Dr. Greg Wiles and Dr. Parker Calkin to study the Columbia Glacier in Alaska. This website is a brief report including a description of the trip, its purpose, and a summary of the laboratory work that is an ongoing part of this project.
Figure 1. This is an aerial photograph of the Columbia Glacier. The glacier's terminus meets the ice choked Columbia Bay between the two bedrock exposures at a width of approximately 5 kilometers. Over the past 20 years the Columbia Glacier has retreated several kilometers, making it one of the fastest melting glaciers on earth.
*This material is based upon work supported by the National Science Foundation under Grant No. 9910805. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation.
Today glaciers cover an impressive 10% of the world's landmass. In the United States alone, glaciers spread over 75,000 square kilometers of earth. Most of the glaciers found in the U.S., such as the Columbia Glacier (Fig.1), are located in Alaska.
There are many important reasons to study glaciers. One popular reason is to establish a link between glacial melting and global warming. A glacier's behavior is dependent upon two variables, climate and precipitation. Today glaciers from the Himalayas to Africa to Alaska are retreating dramatically, while at the same time, worldwide precipitation has remained constant over the past few decades. Given the undeniable link between glacial activity and climate, the fact that glaciers are retreating around the world (almost without exception) makes an interesting case for global warming.
The purpose of the study of Columbia Glacier in 2001 was to extend an existing tree ring chronology for the Prince William Sound from 1100 A.D. to 700 A.D. At the same time, samples from many sites along the walls of the Columbia Bay will be added to strengthen the master chronology already in use. These samples will provide a better understanding of the behavior of the Columbia Glacier over the past 2000 years as well as a year by year record of climate in the area over that span. A third reason for this summer's study was to collect more evidence for a climate and precipitation link between Alaska and the rest of the United States called the Pacific Decadal Oscillation.
To learn more about glaciers visit this page.
Also, check this site for recent press releases concerning glaciers.
Read more about the Pacific Decadal Oscillation here.
Other links to the Columbia Glacier, Photographs, and Research are found above.
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