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 journalArticlepeer-review

15 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 - 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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