Computationally Effective Gravity Inversion Allows for High-Resolution Regional Density Modeling of Earth's Crust with the Inclusion of the Topography Layer
The problem of inverting measured gravity data for large regions is of a great importance for planetary structure studies. Unfortunately, the usual methods of local gravity field inversion do not scale up well. There are three primary factors that start to play significant role: topography or terrai...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Russian Academy of Sciences, The Geophysical Center
2022-05-01
|
| Series: | Russian Journal of Earth Sciences |
| Subjects: | |
| Online Access: | http://doi.org/10.2205/2022ES000789 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849706492295380992 |
|---|---|
| author | Martyshko Pyotr Byzov Denis Chernoskutov Aleksandr |
| author_facet | Martyshko Pyotr Byzov Denis Chernoskutov Aleksandr |
| author_sort | Martyshko Pyotr |
| collection | DOAJ |
| description | The problem of inverting measured gravity data for large regions is of a great importance for planetary structure studies. Unfortunately, the usual methods of local gravity field inversion do not scale up well. There are three primary factors that start to play significant role: topography or terrain surface with large height differences, spherical geometry of the planet, and high computational complexity. In our previous work we were separately considering each of those problems in detail. In this paper however, we will address those issues simultaneously, offering a complete and computationally effective method of recovering spherical density model of Earth's crust with the upper topography layer. The method utilizes a closed form expression for the discretized model's gravity field which allows for great accuracy and speed without enforcing restrictions on model geometry or gravity field data grid. Inversion process is based on the conjugate gradient method. An example of inversion for a synthetic regional model is presented. |
| format | Article |
| id | doaj-art-fa46a141118e4f6ba7cc6862fc149aab |
| institution | DOAJ |
| issn | 1681-1208 |
| language | English |
| publishDate | 2022-05-01 |
| publisher | Russian Academy of Sciences, The Geophysical Center |
| record_format | Article |
| series | Russian Journal of Earth Sciences |
| spelling | doaj-art-fa46a141118e4f6ba7cc6862fc149aab2025-08-20T03:16:11ZengRussian Academy of Sciences, The Geophysical CenterRussian Journal of Earth Sciences1681-12082022-05-012221710.2205/2022ES000789Computationally Effective Gravity Inversion Allows for High-Resolution Regional Density Modeling of Earth's Crust with the Inclusion of the Topography LayerMartyshko Pyotr0https://orcid.org/0000-0002-2481-7328Byzov Denis1https://orcid.org/0000-0002-4107-6488Chernoskutov Aleksandr2Institute of Geophysics named after Yu.P. Bulashevich Ural Branch of the Russian Academy of SciencesBulashevich Institute of Geophysics, UB RASBulashevich Institute of GeophysicsThe problem of inverting measured gravity data for large regions is of a great importance for planetary structure studies. Unfortunately, the usual methods of local gravity field inversion do not scale up well. There are three primary factors that start to play significant role: topography or terrain surface with large height differences, spherical geometry of the planet, and high computational complexity. In our previous work we were separately considering each of those problems in detail. In this paper however, we will address those issues simultaneously, offering a complete and computationally effective method of recovering spherical density model of Earth's crust with the upper topography layer. The method utilizes a closed form expression for the discretized model's gravity field which allows for great accuracy and speed without enforcing restrictions on model geometry or gravity field data grid. Inversion process is based on the conjugate gradient method. An example of inversion for a synthetic regional model is presented.http://doi.org/10.2205/2022ES000789spherical density model terrain density model gravity field inversion gravimetry |
| spellingShingle | Martyshko Pyotr Byzov Denis Chernoskutov Aleksandr Computationally Effective Gravity Inversion Allows for High-Resolution Regional Density Modeling of Earth's Crust with the Inclusion of the Topography Layer Russian Journal of Earth Sciences spherical density model terrain density model gravity field inversion gravimetry |
| title | Computationally Effective Gravity Inversion Allows for High-Resolution Regional Density Modeling of Earth's Crust with the Inclusion of the Topography Layer |
| title_full | Computationally Effective Gravity Inversion Allows for High-Resolution Regional Density Modeling of Earth's Crust with the Inclusion of the Topography Layer |
| title_fullStr | Computationally Effective Gravity Inversion Allows for High-Resolution Regional Density Modeling of Earth's Crust with the Inclusion of the Topography Layer |
| title_full_unstemmed | Computationally Effective Gravity Inversion Allows for High-Resolution Regional Density Modeling of Earth's Crust with the Inclusion of the Topography Layer |
| title_short | Computationally Effective Gravity Inversion Allows for High-Resolution Regional Density Modeling of Earth's Crust with the Inclusion of the Topography Layer |
| title_sort | computationally effective gravity inversion allows for high resolution regional density modeling of earth s crust with the inclusion of the topography layer |
| topic | spherical density model terrain density model gravity field inversion gravimetry |
| url | http://doi.org/10.2205/2022ES000789 |
| work_keys_str_mv | AT martyshkopyotr computationallyeffectivegravityinversionallowsforhighresolutionregionaldensitymodelingofearthscrustwiththeinclusionofthetopographylayer AT byzovdenis computationallyeffectivegravityinversionallowsforhighresolutionregionaldensitymodelingofearthscrustwiththeinclusionofthetopographylayer AT chernoskutovaleksandr computationallyeffectivegravityinversionallowsforhighresolutionregionaldensitymodelingofearthscrustwiththeinclusionofthetopographylayer |