Modelling of Residual Gravity Data due to a Near Surface Dyke Structure Using Damped SVD and Marquardt Inverse Methods
Fuente:
Redalyc
Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad Nacional Autónoma de México
2022
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1876427620473634816 |
|---|---|
| author | Ata Eshaghzadeh |
| author_facet | Ata Eshaghzadeh |
| contents | Modelling of Residual Gravity Data due to a Near Surface Dyke Structure Using Damped SVD and Marquardt Inverse Methods Ata Eshaghzadeh Alireza Hajian Ciencias de la Tierra gravity and Marquardt Damped singular value decomposition (DSVD) In this paper, two inverse modeling methods based on the damped singular value decomposition (DSVD) as a linear inverter and Marquardt optimization algorithm as a nonlinear inverter are described. The damped SVD solve the ill-posed problems and specify the subsurface density contribution directly. The Marquardt inversion estimate the model parameters. The efficiency of the both methods is investigated using the synthetic gravity data, with and without random noise, as the acceptable results attained. The introduced approaches are employed for the interpretation of a real gravity data set from Iran. The gravity causative mass in the study area are almost the magmatic deposit with a high percent of the Manganese dioxide where there have penetrated inside of the fractures and have approximately formed the tabular structures. The inverted structures from the both methods are almost corresponding. The evaluated width, extension and depth to the top and bottom for the buried structure via the damped SVD technique are 15 m, 22 m, 7.5 m and 25 m, respectively and by the Marquardt's algorithm are 15.8 m, 20.3 m, 9.4 m and 21.9 m, respectively. The simulated source has a trend NW-SE with a dip of 38.04 degree. 2022 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56875429004 https://www.redalyc.org/journal/568/56875429004/ https://www.redalyc.org/journal/568/56875429004/html/ https://www.redalyc.org/journal/568/56875429004/56875429004.epub https://www.redalyc.org/journal/568/56875429004/movil https://doi.org/10.22201/igeof.00167169p.2022.61.4.2203 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.4 Vol.61 |
| format | Artículo científico |
| id | redalyc_56875429004 |
| institution | Redalyc |
| language | en |
| publishDate | 2022 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Modelling of Residual Gravity Data due to a Near Surface Dyke Structure Using Damped SVD and Marquardt Inverse Methods Ata Eshaghzadeh Ciencias de la Tierra gravity and Marquardt Damped singular value decomposition (DSVD) Modelling of Residual Gravity Data due to a Near Surface Dyke Structure Using Damped SVD and Marquardt Inverse Methods Ata Eshaghzadeh Alireza Hajian Ciencias de la Tierra gravity and Marquardt Damped singular value decomposition (DSVD) In this paper, two inverse modeling methods based on the damped singular value decomposition (DSVD) as a linear inverter and Marquardt optimization algorithm as a nonlinear inverter are described. The damped SVD solve the ill-posed problems and specify the subsurface density contribution directly. The Marquardt inversion estimate the model parameters. The efficiency of the both methods is investigated using the synthetic gravity data, with and without random noise, as the acceptable results attained. The introduced approaches are employed for the interpretation of a real gravity data set from Iran. The gravity causative mass in the study area are almost the magmatic deposit with a high percent of the Manganese dioxide where there have penetrated inside of the fractures and have approximately formed the tabular structures. The inverted structures from the both methods are almost corresponding. The evaluated width, extension and depth to the top and bottom for the buried structure via the damped SVD technique are 15 m, 22 m, 7.5 m and 25 m, respectively and by the Marquardt's algorithm are 15.8 m, 20.3 m, 9.4 m and 21.9 m, respectively. The simulated source has a trend NW-SE with a dip of 38.04 degree. 2022 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56875429004 https://www.redalyc.org/journal/568/56875429004/ https://www.redalyc.org/journal/568/56875429004/html/ https://www.redalyc.org/journal/568/56875429004/56875429004.epub https://www.redalyc.org/journal/568/56875429004/movil https://doi.org/10.22201/igeof.00167169p.2022.61.4.2203 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.4 Vol.61 |
| title | Modelling of Residual Gravity Data due to a Near Surface Dyke Structure Using Damped SVD and Marquardt Inverse Methods |
| topic | Ciencias de la Tierra gravity and Marquardt Damped singular value decomposition (DSVD) |
| url | https://www.redalyc.org/articulo.oa?id=56875429004 https://www.redalyc.org/journal/568/56875429004/ https://www.redalyc.org/journal/568/56875429004/html/ https://www.redalyc.org/journal/568/56875429004/56875429004.epub https://www.redalyc.org/journal/568/56875429004/movil https://doi.org/10.22201/igeof.00167169p.2022.61.4.2203 |