Bulletin of the Seismological Society of America
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Bulletin of the Seismological Society of America; June 1970; v. 60; no. 3; p. 717-739
© 1970 Seismological Society of America
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The symmetrical triaxial seismometer—Its design for application to long-period seismometry

BEN S. MELTON and B. M. KIRKPATRICK*

203 ROCKBROOK DRIVEROCKWALL, TEXAS 75087

Abstract

The symmetrical triaxial seismometer is one in which the orthogonal directions of response form equal angles of about 55 degrees with the vertical. The symmetrical design facilitates matching the response of the three elements, and in the long-period configuration minimizes some problems encountered from variations in the natural period caused by local tilting of the earth. A compact design suited to installation in a cased hole is feasible, which in turn permits more widespread application and allows reduction of localized, non-propagating surface noise and tilts.

Footnotes

* Project Engineer, Teledyne Geotech, Garland, Texas.




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