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SATELLITE IMAGE ATLAS OF GLACIERS OF THE WORLD

Edited by Richard S. Williams, Jr., and Jane G. Ferrigno

Glaciers of North America — GLACIERS OF ALASKA

By Bruce F. Molnia

With sections on COLUMBIA AND HUBBARD TIDEWATER GLACIERS
By ROBERT M. KRIMMEL
THE 1986 AND 2002 TEMPORARY CLOSURES OF RUSSELL FIORD BY THE HUBBARD GLACIER
By BRUCE F. MOLNIA, DENNIS C. TRABANT, ROD S. MARCH, and ROBERT M. KRIMMEL
GEOSPATIAL INVENTORY AND ANALYSIS OF GLACIERS: A CASE STUDY FOR THE EASTERN ALASKA RANGE
By WILLIAM F. MANLEY

Description

This chapter is the eighth chapter to be released in U.S. Geological Survey Professional Paper 1386, Satellite Image Atlas of Glaciers of the World, a series of 11 chapters. In each chapter, remotely sensed images, primarily from the Landsat 1, 2, and 3 series of spacecraft, are used to study the glacierized regions of our planet and to monitor glacier changes. Landsat images, acquired primarily during the middle to late 1970s, were used by an international team of glaciologists and other scientists to study various geographic regions or to discuss glaciological topics. In each geographic region, the present areal distribution of glaciers is compared, wherever possible, with historical information about their past extent. The atlas provides an accurate regional inventory of the areal extent of glacier ice on our planet during the 1970s as part of a growing international scientific effort to measure global environmental change on the Earth's surface. This chapter is divided into three parts: Part I, Background and History; Part II, Glaciological Topics; and Part III, Regional Distribution of Alaska Glaciers.

About 5 percent (about 75,000 km²) of Alaska is presently glacierized, including 11 mountain ranges, 1 large island, an island chain, and 1 archipelago. The total number of glaciers in Alaska is estimated at >100,000, including many active and former tidewater glaciers. Glaciers in every mountain range and island group are experiencing significant retreat, thinning, and (or) stagnation, especially those at lower elevations, a process that began by the middle of the 19th century. In southeastern Alaska and western Canada, 205 glaciers have a history of surging; in the same region, at least 53 present and 7 former large ice-dammed lakes have produced jökulhlaups (glacier-outburst floods). Ice-capped Alaska volcanoes also have the potential for jökulhlaups caused by subglacier volcanic and geothermal activity. Satellite remote sensing provides the only practical means of monitoring regional changes in glaciers in response to short-and long-term changes in the maritime and continental climates of Alaska. Geospatial analysis is used to define selected glaciological parameters in the eastern part of the Alaska Range.

Obtaining the Book

Professional Paper 1386-K is available in print (ISBN 0–607–98291-8; see below) or in PDF format. The book is available as one large PDF file or as a group of smaller files. Right-click (PC) or command-click (Mac) to download the PDF files.

Get Adobe Reader.

Photographs and Images

Those photographs and satellite images from this book that are listed in the captions as being available as larger images online (high-quality JPEG files) are contained in the directory figures. Captions are not included with the photographs.

Color-infrared aerial photographs are identified by number and can be ordered on a CD-ROM from the GeoData Center at the University of Alaska.

Contact

The printed version of this publication is available from:

USGS Information Services
Federal Center, Box 25286
Denver, CO 80225
e-mail: infoservices@usgs.gov

Telephone: 1-888-ASK-USGS.

For questions about the content of this report, contact Bruce F. Molnia.

Suggested Citation

Molnia, B.F., 2008, Glaciers of North America -- Glaciers of Alaska, in Williams, R.S., Jr., and Ferrigno, J.G., eds., Satellite image atlas of glaciers of the world: U.S. Geological Survey Professional Paper 1386-K, 525 p.

Professional Paper 1386 Home Page