Improved imaging with phase-weighted common conversion point stacks of receiver functions

A. Frassetto, G. Zandt, H. Gilbert, T. J. Owens, C. H. Jones

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Broad-band array studies frequently stack receiver functions to improve their signal-to-noise ratio while mapping structures in the crust and upper mantle. Noise may produce spurious secondary arrivals that obscure or mimic arrivals produced by P-to-S conversions at large contrasts in seismic impedance such as the Moho. We use a Hilbert transform to calculate phase-weights, which minimize the constructive stacking of erroneous signal in receiver function data sets. We outline this approach and demonstrate its application through synthetic data combined with different types of noise, a previously published example of signal-generated noise, and a large data set from the Sierra Nevada EarthScope Project. These examples show that phase-weighting reduces the presence of signal-generated noise in receiver functions and improves stacked data sets.

Original languageEnglish (US)
Pages (from-to)368-374
Number of pages7
JournalGeophysical Journal International
Volume182
Issue number1
DOIs
StatePublished - Jul 1 2010

Keywords

  • Crustal structure
  • Image processing
  • Interface waves
  • Site effects
  • Wave scattering and diffraction

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

Fingerprint Dive into the research topics of 'Improved imaging with phase-weighted common conversion point stacks of receiver functions'. Together they form a unique fingerprint.

  • Cite this