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Document Type

Research

Abstract

The Des Moines Seismograph Station started operation December 20, 1934, using a single component to record east-west motion. On March 15, 1935, a second instrument was placed in operation to record north-south motion.

Publication Date

1935

Journal Title

Proceedings of the Iowa Academy of Science

Volume

42

Issue

1

First Page

133

Last Page

138

Copyright

© Copyright 1935 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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