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U.S. Geological Survey Open-File Report 80–302

Hawaiian Volcano Observatory Seismic Network History 1950-79

By Fred W. Klein and Robert Y. Koyanagi

Thumbnail of and link to report PDF (44 MB)Introduction

The purpose of this report is to assemble information on the growth and recording of the Hawaiian Volcano Observatory’s seismic network. It is meant as a guide for those using the seismic records to determine the availability, format, and characteristics of records on a station-by-station basis. This report is intended to be kept up to date with new entries made when stations, their recording, or their characteristics change. The emphasis is on the most recent information (1967–1 October 1979), but effort has been made to include some network characteristics back to 1950.

This report also includes information on the growth of the network as recording capacity increased. Response curves and calibration factors are given in an attempt to allow users of the data to relate measured amplitudes to ground displacement, at least for data after 1974. Also included is a brief description of scale factors presently in use in setting up network electronics which relates Develocorder to magnetic tape amplitudes.

Detailed descriptions of seismic instrumentation, particularly the variety of types in use before 1970, can be found in several original sources. The information presented here is drawn from these original sources, as well as log books and notebooks maintained by the technical staff.

  • This report is available only on the Web.

For additional information:
Contact Information, Earthquake Science Center, Menlo Park Science Center
U.S. Geological Survey
345 Middlefield Road, MS 977
Menlo Park, California 94025
http://earthquake.usgs.gov/

This report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Klein, F.W., and Koyanagi, R.Y., 1980, Hawaiian Volcano Observatory seismic network history 1950–79: U.S. Geological Survey Open-File Report 80–302, 84 p. (Available at http://pubs.usgs.gov/of/1980/0302/.)



Contents

Introduction

Brief History of the Seismic Network

Seismograph Instrumentation

Instrumentation and Recording History by Station

Develocorder Trace Assignments


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