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Image of report cover (click for pdf; 2.3 MB)

Photogrammetric Data Set, 1957-2000 and Bathymetric Measurements for Columbia Glacier, Alaska

by Robert M. Krimmel

U.S. GEOLOGICAL SURVEY
Water-Resources Investigations Report 01-4089

ABSTRACT

Major changes in the length, speed, surface altitude, and calving rate of Columbia Glacier, Alaska have been recorded with stereo vertical photography acquired on 119 dates from 1957 to 2000. Photogrammetric analysis of this photographic record has resulted in precise measurement of these changes. From 1982 to 2000 Columbia Glacier retreated 12 kilometers, reduced its thickness by as much as 400 meters, increased its speed from about 5 to 30 meters per day, and increased its calving rate from 3 to 18 million cubic meters per day. All photogrammetric data for Columbia Glacier from 1957 to 2000 are included in this report, as well as supplemental data of ice-dammed lake surface levels, stagnant ice ablation rate, forebay bathymetry, ground control, and camera calibrations. These data are contained in 481 files, all preserved on a CD-ROM included with this report.

CONTENTS

Abstract
Introduction
Data Acquired
Data Files and Storage
Other Sources for These Data Types
Conclusions References


Krimmel, R.M., 2001, Photogrammetric Data Set, 1957-2000 and Bathymetric Measurements for Columbia Glacier, Alaska: U.S. Geological Survey Water-Resources Investigations Report 01-4089, 46 p.

Full Report, Acrobat PDF (2.3 MB)  pdficon.gif (224 bytes)

Data files from report CD in zip format (76 MB) (Suggested to read report first to be sure you want these; contains 513 files, mostly text or examine CD readme file.)

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Maintainer: Rod March
Last update: Monday, October 03, 2011 12:37 PM
URL: http://ak.water.usgs.gov/glaciology/columbia/reports/wri 01-4089/index.htm