Bulletin of the Seismological Society of America
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Bulletin of the Seismological Society of America; April 1948; v. 38; no. 2; p. 95-104
© 1948 Seismological Society of America
This Article
Right arrow Full Text (PDF)
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by GANE, P. G.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

An electrostatic seismometer*

P. G. GANE

THE BERNARD PRICE INSTITUTE FOR GEOPHYSICAL RESEARCH, WITWATERSRAND UNIVERSITY,, JOHANNESBURG, South Africa

Abstract

THEORY and description are given of sensitive capacity-type seismometers having small size, eddy-current damping, and an undamped period of 0.23 second. The voltage output is taken to the grid of a cathode-follower tube within the instrument and is thereafter amplified. The suspension of the mass (by torsion wire) is of identical character in both vertical- and horizontal-component instruments. Records are given of tremors observed with a magnification of 7,000.

Footnotes

* Manuscript received for publication, October 17, 1947.




This article has been cited by other articles:


Home page
 Bulletin of the Seismological Society of AmericaHome page
P. G. GANE, H. J. LOGIE, and J. H. STEPHEN
Triggered telerecording seismic equipment
Bulletin of the Seismological Society of America, April 1, 1949; 39(2): 117 - 143.
[Abstract] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1948 by the Seismological Society of America.