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Professional Paper 544–D

Effects of the March 1964 Alaska Earthquake on Glaciers

By Austin Post

Thumbnail of and link to report PDF 18.9 MB)Abstract

The 1964 Alaska earthquake occurred in a region where there are many hundreds of glaciers, large and small. Aerial photographic investigations indicate that no snow and ice avalanches of large size occurred on glaciers despite the violent shaking. Rockslide avalanches extended onto the glaciers in many localities, seven very large ones occurring in the Copper River region 160 kilometers east of the epicenter. Some of these avalanches traveled several kilometers at low gradients; com-pressed air may have provided a lubricating layer. If long-term changes in glaciers due to tectonic changes in altitude and slope occur, they will probably be very small. No evidence of large-scale dynamic response of any glacier to earthquake shaking or avalanche loading was found in either the Chugach or Kenai Mountains 16 months after the 1964 earthquake, nor was there any evidence of surges (rapid advances) as postulated by the Earthquake-Advance Theory of Tarr and Martin.

First posted October 31, 2012
Revised August 21, 2013

For additional information:
Contact Information, Menlo Park, Calif.
   Office—Earthquake Science Center
U.S. Geological Survey
345 Middlefield Road, MS 977
Menlo Park, CA 94025
http://earthquake.usgs.gov/

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Suggested citation:

Post, A., 1967, Effects of the March 1964 Alaska earthquake on glaciers: U.S. Geological Survey Professional Paper 544–D, 54 p., https://pubs.usgs.gov/pp/0544d/.



Contents

Abstract

Introduction

Hydroseismic Data

Hydroseismograpms from the Nunn-Bush Shoe Co. Well, Wisconsin

Geographic Distribution of Hydrologic Effects

Hydroseisms from Aftershocks

Conclusions

References Cited


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