Old seismographs still in operation in Northern California

Earthquake Information Bulletin (USGS)


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Felt earthquakes are frequent on the Cape Mendocino end of the northern San Andreas fault in Humboldt County, California. For this reason a Bosch-Omori seismograph was installed by Horace Winslow of the U.S Coast and Geodetic Survey in teh old city jail in Ferndale as early as 1932. In 1981 the seismograph was moved to the Ferndale Museum where it is monitored now by James Scalvini. Data from the seismograph are sent to the Survey's National Earthquake Information Service in Golden, Colorado. 

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Old seismographs still in operation in Northern California
Series title Earthquake Information Bulletin (USGS)
Volume 16
Issue 5
Year Published 1984
Language English
Publisher U.S Geological Survey
Description 2 p.
First page 194
Last page 195
Online Only (Y/N) N
Additional Online Files (Y/N) N