Seismic Coda-Waves Imaging Based on Sensitivity Kernels Calculated Using an Heuristic Approach
In this paper we review and discuss the seismic method based on the analysis of seismic coda waves used in the last 10 years by the present authors and/or their co-workers, to produce separate images of intrinsic- and scattering attenuation in zones of peculiar geological interest (mainly volcanoes)...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-08-01
|
| Series: | Geosciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3263/10/8/304 |
| _version_ | 1797559581730144256 |
|---|---|
| author | Edoardo Del Pezzo Jesús M. Ibáñez |
| author_facet | Edoardo Del Pezzo Jesús M. Ibáñez |
| author_sort | Edoardo Del Pezzo |
| collection | DOAJ |
| description | In this paper we review and discuss the seismic method based on the analysis of seismic coda waves used in the last 10 years by the present authors and/or their co-workers, to produce separate images of intrinsic- and scattering attenuation in zones of peculiar geological interest (mainly volcanoes). Such separate attenuation images are considered by the scientific community as complementary to those from ordinary velocity-tomography and useful to improve the geological interpretation in volcanoes and in tectonically active zones. In this review we only list but do not discuss the most significative papers showing the images obtained, as we are focused to review the method and not the interpretation of data analysis. For sake of completeness, we anyway show also a new analysis applied to data from Stromboli volcano. We thus first introduce the physical model describing the seismogram Energy Envelope (derived from the solution of the Energy Transport integral Equation) and discuss its asymptotic approximations (Diffusion- and Single-scattering model). Then, we describe a numerical method to heuristically calculate the Sensitivity Kernels for the propagation of the scattered waves in the assumption of isotropic scattering. We attribute to these Sensitivity Kernels the physical meaning of probability that for a single source-receiver couple the measured attenuation parameters can be associated with the space coordinates. Based on this definition, the attenuation image can be obtained mapping the estimated attenuation parameters onto the zone under study weighting with the Sensitivity Kernels. We further discuss how to estimate the uncertainties associated with the results and report the list of the papers describing the (separated) scattering- and intrinsic-attenuation structures investigated using this approach. |
| first_indexed | 2024-03-10T17:47:27Z |
| format | Article |
| id | doaj.art-f390038594bf414a84948b07f1e0f204 |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-10T17:47:27Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-f390038594bf414a84948b07f1e0f2042023-11-20T09:30:33ZengMDPI AGGeosciences2076-32632020-08-0110830410.3390/geosciences10080304Seismic Coda-Waves Imaging Based on Sensitivity Kernels Calculated Using an Heuristic ApproachEdoardo Del Pezzo0Jesús M. Ibáñez1Istituto Andaluz de Geofisica, Universidad de Granada, 18071 Granada, SpainIstituto Andaluz de Geofisica, Universidad de Granada, 18071 Granada, SpainIn this paper we review and discuss the seismic method based on the analysis of seismic coda waves used in the last 10 years by the present authors and/or their co-workers, to produce separate images of intrinsic- and scattering attenuation in zones of peculiar geological interest (mainly volcanoes). Such separate attenuation images are considered by the scientific community as complementary to those from ordinary velocity-tomography and useful to improve the geological interpretation in volcanoes and in tectonically active zones. In this review we only list but do not discuss the most significative papers showing the images obtained, as we are focused to review the method and not the interpretation of data analysis. For sake of completeness, we anyway show also a new analysis applied to data from Stromboli volcano. We thus first introduce the physical model describing the seismogram Energy Envelope (derived from the solution of the Energy Transport integral Equation) and discuss its asymptotic approximations (Diffusion- and Single-scattering model). Then, we describe a numerical method to heuristically calculate the Sensitivity Kernels for the propagation of the scattered waves in the assumption of isotropic scattering. We attribute to these Sensitivity Kernels the physical meaning of probability that for a single source-receiver couple the measured attenuation parameters can be associated with the space coordinates. Based on this definition, the attenuation image can be obtained mapping the estimated attenuation parameters onto the zone under study weighting with the Sensitivity Kernels. We further discuss how to estimate the uncertainties associated with the results and report the list of the papers describing the (separated) scattering- and intrinsic-attenuation structures investigated using this approach.https://www.mdpi.com/2076-3263/10/8/304seismic scatteringseismic imagingseismic attenuation |
| spellingShingle | Edoardo Del Pezzo Jesús M. Ibáñez Seismic Coda-Waves Imaging Based on Sensitivity Kernels Calculated Using an Heuristic Approach Geosciences seismic scattering seismic imaging seismic attenuation |
| title | Seismic Coda-Waves Imaging Based on Sensitivity Kernels Calculated Using an Heuristic Approach |
| title_full | Seismic Coda-Waves Imaging Based on Sensitivity Kernels Calculated Using an Heuristic Approach |
| title_fullStr | Seismic Coda-Waves Imaging Based on Sensitivity Kernels Calculated Using an Heuristic Approach |
| title_full_unstemmed | Seismic Coda-Waves Imaging Based on Sensitivity Kernels Calculated Using an Heuristic Approach |
| title_short | Seismic Coda-Waves Imaging Based on Sensitivity Kernels Calculated Using an Heuristic Approach |
| title_sort | seismic coda waves imaging based on sensitivity kernels calculated using an heuristic approach |
| topic | seismic scattering seismic imaging seismic attenuation |
| url | https://www.mdpi.com/2076-3263/10/8/304 |
| work_keys_str_mv | AT edoardodelpezzo seismiccodawavesimagingbasedonsensitivitykernelscalculatedusinganheuristicapproach AT jesusmibanez seismiccodawavesimagingbasedonsensitivitykernelscalculatedusinganheuristicapproach |