Installation of a High Gain Long Period Seismograph Station
Abstract
Two high gain (100K) long period (To=30 sec) horizontal seismic systems have been added to the White Pine Seismological Observatory. They have been installed in a subsurface vault adjacent to, but separate from the vertical instrumental vault completed in 1973. They have proved to be extremely stable, more so in fact than the vertical, for long term recording. The high gain vertical seismic system was switched from phototube amplifier to solid state Geotech AS-650 amplifier. The vertical velocity output amplified with the Geotech 5240-A phototube amplifier was compared with simultaneously recorded vertical velocity output amplified with the Geotech AS-650 solid state amplifier. A surface recording facility has been established.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1974
- Accession Number
- ADA004137
Entities
People
- F. J. Mauk
- James T. Mauk
Organizations
- University of Michigan