Application of a Vertical Strain Seismograph to the Enhancement of P Waves.
Abstract
Enhancement of P waves is obtained by the suppression of microseisms with a combination of vertical linear strain seismograph and vertical inertial seismograph outputs. Significant suppression is observed at sites where the predominant microseisms consist of essentially single-mode Rayleigh waves in contrast to that observed at a site where the microseismic noise is compositionally more complex. A description is given of the vertical linear strain seismograph used in these investigations. Consideration is given to the use of a vertical transverse strain seismograph at sites where the microseismic noise field is complex. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 12, 1969
- Accession Number
- AD0850352
Entities
People
- Richard H. Kirklin
- Robert C. Shopland
Organizations
- Geotech Instruments (United States)