Reliable workflow for inversion of seismic receiver function and surface wave dispersion data: a “13 BB Star” case study

Chrapkiewicz, Kajetan; Wilde−Piórko, Monika; Polkowski, Marcin; Grad, M.

doi:10.1007/s10950-019-09888-1

Cited by 4 publications

(5 citation statements)

References 56 publications

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“…Checkerboard tests can ensure additional insight into the data and are designated to investigate the adequacy of the initial model and the stability of the inversion scheme (Chrapkiewicz et al 2020). The checkerboard tests can be used to test the ability of the inversion scheme to reconstruct velocity anomalies (in the presented study with depth).…”

Section: Checkerboard Testsmentioning

confidence: 99%

“…However, the typically analysed maximum period of surface waves recorded by broadband seismometers is 100-180 s (e.g. Stehly et al 2009;Chrapkiewicz et al 2020). A resolving power of a given inversion scheme can be estimated based on the resolution matrix whenever possible (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al 2010;Verbeke et al 2012). Chrapkiewicz et al (2020) have proposed to adopt a checkerboard test to 1D problem to tackle the credibility of the final model of the distribution of V s with depths, inverted based on a velocity dispersion curve of the surface wave.…”

Section: Introductionmentioning

confidence: 99%

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Determination of the Earth’s structure based on intermediate-period surface wave recordings of tidal gravimeters: a case study

Karkowska

Wilde−Piórko

2022

Earth Planets Space

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Tidal gravimeters can detect intermediate-period surface waves with high accuracy. Three gravimetric stations with estimated transfer functions and co-located with seismic stations were selected: two in Belgium (Membach and Rochefort, in Western Europe) and one in Germany (Black Forest, in Central Europe). The compatibility of gravimetric and seismic recordings of earthquakes in the period range of 10-180 s has been presented. The series of monochromatic signals separated from surface waves for selected events have been calculated using the multiple-filtering procedure, and averaged fundamental-mode Rayleigh wave group-velocity curves have been estimated on a regional scale. Next, averaged dispersion curves for three regions (Italy, Greece, and Western Turkey) were inverted by weighted linear inversion methods. Additionally, a quantitative analysis of resolution tests of inverted models was presented to show the capabilities of the gravimetric data to retrieve a shear-wave velocity distribution with a depth. In particular, a method for determining the depth range of the inverted model has been proposed. Results obtained based on gravimetric data were verified by results from seismic data obtained by applying the same procedure. This study shows the novel application of tidal gravimetric data in the determination of the regional Earth’s structure based on intermediate-period surface waves recordings, as well as a comprehensive approach to the quantitative estimation of a final model resolution. Graphical Abstract

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Section: Checkerboard Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determination of the Earth’s structure based on intermediate-period surface wave recordings of tidal gravimeters: a case study

Karkowska

Wilde−Piórko

2022

Earth Planets Space

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“…Such functions can be extracted from the model resolution matrix (Jackson, 1972;. Several examples of the use of resolution matrices to analyze various inversion problems can be found in the literature (Alumbaugh and Newman, 2000;Routh and Miller, 2006;Fichtner and Leeuwen, 2015;Chrapkiewicz et al, 2020;. A few publications have also briefly discussed applications of the model resolution matrix within CSEM inversion but with limited demonstrations .…”

Section: R E F E R E N C E Smentioning

confidence: 99%

Revisiting holistic migration

Thorkildsen

Gelius

Robinson³

2021

The Leading Edge

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If an optical hologram is broken into pieces, a virtual object can still be reconstructed from each of the fragments. This reconstruction is possible because each diffraction point emits waves that reach every point of the hologram. Thus, the entire object is encoded into each subset of the hologram. Analogous to the broken hologram, the use of undersampled seismic data violating the Nyquist-Shannon sampling theorem may still give a well-resolved image of the subsurface. A theoretical framework of this idea has already been introduced in the literature and denoted as holistic migration. However, the general lack of seismic field data demonstrations has inspired the study presented here. Since the optical hologram is diffraction-driven, we propose to employ diffraction-separated data and not conventional reflection data as input for holistic migration. We follow the original idea and regularly undersample the data spatially. Such a sampling strategy will result in coherent noise in the image domain. We therefore introduce a novel signal processing technique to remove such noise. The feasibility of the proposed approach is demonstrated employing the Sigsbee2a controlled data set and field data from the Barents Sea.

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“…Such functions can be extracted from the model resolution matrix (Jackson, 1972;Menke, 2012). Several examples of the use of resolution matrices to analyze various inversion problems can be found in the literature (Alumbaugh and Newman, 2000;Friedel, 2003;Routh and Miller, 2006;Kalscheuer et al, 2010;Fichtner and Leeuwen, 2015;Chrapkiewicz et al, 2020;Ren and Kalscheuer, 2020). A few publications have also briefly discussed applications of the model resolution matrix within CSEM inversion but with limited demonstrations (Grayver et al, 2014;Mattsson, 2015;Mckay et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Resolution enhancement of 2D controlled-source electromagnetic images by use of point-spread function inversion

Thorkildsen

Gelius

2023

Front. Earth Sci.

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The marine controlled-source electromagnetic technique is employed both in large-scale geophysical applications as well as within the exploration of hydrocarbons and gas hydrates. Because of the diffusive character of the EM field, only very low frequencies are used, leading to inversion results with low resolution. In this paper, we calculated the resolution matrix associated with the inversion and derived the corresponding point-spread functions. The PSFs provided information about how much the actual inversion was blurred. Using a space-varying deconvolution can thus further improve the inversion result. The actual deblurring was carried out using the nonnegative flexible conjugate gradient least-squares (NN-FCGLS) algorithm, which is a fast iterative restoration technique. To attain completeness, we also introduced the results obtained using a blind deconvolution algorithm based on the maximum likelihood estimation with unknown PSFs. The potential of the proposed approach has been demonstrated using both complex synthetic data and field data acquired at the Wisting oil field in the Barents Sea. In both cases, the resolution of the final inversion result was improved and showed greater agreement with the known target area.

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Reliable workflow for inversion of seismic receiver function and surface wave dispersion data: a “13 BB Star” case study

Cited by 4 publications

References 56 publications

Determination of the Earth’s structure based on intermediate-period surface wave recordings of tidal gravimeters: a case study

Determination of the Earth’s structure based on intermediate-period surface wave recordings of tidal gravimeters: a case study

Revisiting holistic migration

Resolution enhancement of 2D controlled-source electromagnetic images by use of point-spread function inversion

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