Performance characteristics of a rotational seismometer for near-field and engineering applications

Ramanath Cowsik, Tsitsi Madziwa-Nussinov, Kasey Wagoner, Douglas Wiens, Michael Wysession

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

Based on the concept that torsion balances act as good filters for rotational oscillations at frequencies above their natural frequency of oscillations, we have fabricated a simple prototype to serve as a rotational seismometer for near-field and engineering studies. This instrument displays a nearly flat response at frequencies above 10 mHz, and the preliminary data taken with this instrument show a sensitivity of 5 × 10-6(ν/0:01 Hz) rad sec-1 Hz-1/2. Marginal improvements of the fabrication and housing will be needed to fully cover the sensitivities recommended by a U.S. Geological Survey (USGS) panel for studies at these frequencies.

Original languageEnglish (US)
Pages (from-to)1181-1189
Number of pages9
JournalBulletin of the Seismological Society of America
Volume99
Issue number2 B
DOIs
StatePublished - Jul 13 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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