| More

APPLICATION OF CLEAN ALGORITHM IN INCOMPLETE MICROTREMORS RECORDINGS

Views: 239 Downloads: 216
G. Hloupis, M. Moisidi, F. Vallianatos, J. P. Makris, J. Stonham, D. Triantis
G. Hloupis, M. Moisidi, F. Vallianatos, J. P. Makris, J. Stonham, D. Triantis

Abstract


The reconstruction of gapped microtremors recordings with the aid of CLEAN algorithm, which originally developed for spectral analysis of unevenly spaced time series, is studied. As proved in previous relative studies the algorithm has the ability to "clean" the spectrum of a discrete signal from artifacts and additionally (through an Inverse DFT) to reconstruct the signal in time domain. We studied the algorithm's effectiveness of reconstruction in microtremors recordings. We saw that for continuous gap with length up to 10% of the total length of microtremor recording, the algorithm was able to reconstruct efficiently.


Full Text:

PDF

References


Baisch, S., Bokelmann, G.,1999, "Spectral analysis with incomplete time series: an example from seismology", Computer and Geosciences, 25, pp.739-750

Bour, M.,Fouissac, D., Dominique, P., Martin, C.,1996, On the use of microtremor recording in seismic microzonation. Soil Dynamics and Earthquake Engineering, vol.17, issue 7-8, pp.465-474

Ding, Y., Li, Z., Diwu, Y., 1999, The CLEAN method of spectral analysis and its application to the oscillations of the cataclysmic variable TT Ariets", Chinese Astronomy and Astrophysics, 23 , pp.484-492

Giampiccolo, E., Gresta, S., Mucciarelli, M., de Guidi, G., Gallipoli, M., 2001, Information on subsoil geological structure in the city of Catania from microtremors measurements. Annali di Geofisica, Vol.44, N.1

Gitterman. Y., Zaslavsky, Y., Shapira, Α., Shtivelman, V., 1996, Empirical site response evaluations: case studies in Israel. Soil Dynamics and Earthquake Engineering, vol.15, pp.447-463

Mucciarelli, M., 1998, Reliability and applicability of Nakamura's technique using microtremors: an experimental approach, Journal of Earthquake Engineering, Vol.2, No.4, pp.625-638.

Nakamura, Y.„ 1989, A method for dynamic characteristics estimation of subsurface using microtremor on the ground surface, Rep. Railway Tech. Inst. Jpn, 30, 1, pp.25-33.

Nogoshi, M., 1978, On fundamental nature of microtremors and its application. J.Min. Coll. Akita Univ. Jpn, Ser.A5 3, pp.1-51

Roberts, D., Lehar, J., Dreher, J., 1987, Time series analysis with CLEAN. I: Derivation of a spectrum, Astronomical Journal, 93 (4), pp.968-989


Refbacks

  • There are currently no refbacks.


Copyright (c) 2018 G. Hloupis, M. Moisidi, F. Vallianatos, J. P. Makris, J. Stonham, D. Triantis

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.