USGS Open-File Report 2008-1311: A Brief Test of the Tokyo Sokushin VSE

A Brief Test of the Tokyo Sokushin VSE–355G3 Strong Motion Velocity Seismometer

By Charles R. Hutt, John R. Evans, and Isamu Yokoi

Introduction

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The VSE–355G3 seismometer is a broadband seismometer (called a “servo velocity meter” by Tokyo Sokushin) with a specified clip level of 2 m/s and a flat response to earth velocity from 0.008 Hertz (Hz) to 70 Hz. Mr. Yokoi and Mr. Kurahashi of Tokyo Sokushin shipped one instrument to the U. S. Geological Survey’s Albuquerque Seismological Laboratory (ASL) for testing in early September 2007. They gave a presentation on this instrument and some of their other products to the authors and others on September 6, 2007. Testing of the VSE–355G3, Serial Number 70520, commenced on Friday, September 7, 2007.

Version 1.0

Posted October 2008

Report PDF (4.2 MB)

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Suggested citation:

Hutt, C. R., Evans, J. R., and Yokoi, I., 2008, A Brief Test of the Tokyo Sokushin VSE–355G3 Strong Motion Velocity Seismometer: U.S. Geological Survey Open–File Report, 2008–1311, 44 p.

Contents

1 INTRODUCTION

2 PHYSICAL CHARACTERISTICS

3 TESTS PERFORMED

4 SUMMARY

5 STRONG MOTION VELOCITY METER VS. ACCELEROMETER

6 APPENDIX