Interactive high-resolution polarization analysis of broad-band seismograms

Main Article Content

A. Plešinger
M. Hellweg
D. Seidl

Abstract

In the laterally heterogeneous and anisotropic Earth the particle motions of seismic waves are three-dimensionally polarized. This paper presents a method for determining a local wave coordinate system using the zeros of some component operators in rotated systems. It is applicable to broad-band composite waveforms and offers higher precision and resolution for the determination of azimuth and incidence angle than the usual least-squares techniques. The algorithms have been implemented in an interactive program for preprocessing three-component digital recordings. In addition, the program allows the use of particle motion diagrams and component products for the determination of wave types, onset times and pulse durations. Its performance is demonstrated on regional and teleseismic events recorded at the European broad-band stations GRF (Grafenberg, West Germany), KRC (Kasperske Hory, Czechoslovakia) and KSP (Ksiaz, Poland).


Google Scholar           ARK: https://n2t.net/ark:/88439/y034913


Permalink: https://geophysicsjournal.com/article/203


 

Article Details

How to Cite
Plešinger, A., M. Hellweg, and D. Seidl. 1986. “Interactive High-Resolution Polarization Analysis of Broad-Band Seismograms”. Journal of Geophysics 59 (1), 129-39. https://journal.geophysicsjournal.com/JofG/article/view/203.
Bookmark and Share

References

Aki, K., Richards, P.G. (1980) Quantitative seismology, pp. 103-104. San Francisco: Freeman

Bamford, D. (1977) Seismic anisotropy - the state of the art. Geophys. J. 49:1-8

Brustle, W. (1985) Der Bruchvorgang im Erdbebenherd - Untersuchung ausgewahlter Erdbeben mit beobachteten und synthetischen Seismogrammen. Berichte des Instituts fur Meteorologie und Geophysik der Universitat. Frankfurt/M., Nr. 63

Chandra, U. (1972) Angles of incidence of S waves. Bull. Seismal. Soc. Am. 62:903-915

Cormier, V.F. (1984) The polarization of S waves in a heterogeneous isotropic earth model. J. Geophys. 56:20-23

Crampin, S.H. (1977) A review of the effects of anisotropic layering on the propagation of seismic waves. Geophys. J. 49:9-27

Crampin, S., Chesnokov, E.M., Hipkin, R.G. (1984) Seismic anisotropy - the state of the art: II. Geophys. J. 76:1-16

Harjes, H.-P., Seidl, D. (1978) Digital recording and analysis of broad-band seismic data at the Graefenberg (GRF)-array. J. Geophys. 44:511-523

Kanasewich, E.R. (1981) Time sequence analysis in geophysics, 3rd ed. Alberta: The University of Alberta Press

Keith, C.M., Crampin, S. (1977a) Seismic body waves in anisotropic media: reflection and refraction at a plane interface. Geophys. J. 49:181-208

Keith, C.M., Crampin, S. (1977b) Seismic body waves in anisotropic media: propagation through a layer. Geophys. J. 49:209-223

Keith, C.M., Crampin, S. (1977c) Seismic body waves in anisotropic media: synthetic seismograms. Geophys. J. 49:225-243

Kind, R. (1979) Observations of sPn from Swabian Alb earthquakes at the GRF array. J. Geophys. 45:337-340

Matsumura, S. (1981) Three-dimensional expression of seismic particle motions by the trajectory ellipsoid and its application to the seismic data observed in the Kanta district, Japan. J. Phys. Earth 29:221-239

Nuttli, O., Whitmore, J.D. (1961) An observational determination of the variation of the angle of incidence of P waves with the epicentral distance. Bull. Seismal. Soc. Am. 51:269-276

Pho, H.-T., Behe, L. (1972) Extended distances and angles of incidence of P waves. Bull. Seismal. Soc. Am. 62:885-902

Plešinger, A., Horalek, J. (1976) The seismic broadband recording and data processing system FBV /DPS and its seismological applications. J. Geophys. 42:201-217

Plešinger, A. (1981) Acquisition, processing and interpretation of broadband seismic data. In: Geophysical syntheses in Czechoslovakia, pp. 58-78. Bratislava: VEDA

Rademacher, H., Odom, R.I., Kind, R. (1983) The upper mantle structure under south-east Europe derived from broadband records of Greek earthquakes. J. Geophys. 52:7-13

Seidl, D. (1980) The simulation problem for broad-band seismograms. J. Geophys. 48:84-93

Seidl, D., Stammler, W. (1984) Restoration of broad-band seismograms (Part I). J. Geophys. 54:114-122