A High-Resolution Earth’s Gravity Field Model SGG-UGM-2 from GOCE, GRACE, Satellite Altimetry, and EGM2008

Liang, Wei; Li, Jiancheng; Xu, Xinyu; Zhang, Shengjun; Zhao, Yuchen

doi:10.1016/j.eng.2020.05.008

Cited by 72 publications

(37 citation statements)

References 42 publications

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“…Earth gravity model SGG-UGM-2 is a high-resolution earth gravity model combined from GOCE, Gravity Recovery and Climate Experiment (GRACE) data, and EGM2008. This model shows promising performance in GPS validation (Liang et al, 2020).…”

Section: Introductionmentioning

confidence: 90%

A Comparison of Geologic Structure Detection of Sumatera Island Using Goce Satellite Gravity Data and Sgg-Ugm-2 Data

Natul

Heliani

2022

J. Geoscience Eng. Environ. Technol.

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GOCE gravity satellite data can be used for regional fault detection because the observation area is wide and not limited by area. In this study, GOCE satellite data is used to detect geological structures on the island of Sumatra, the results of which are used as the basis for disaster mitigation. GOCE data and SGG-UGM-2 were processed using the GOCE User Toolbox (GUT) software to produce a gravity disturbance map and a complete bouguer anomaly map. The GOCE obtained results were validated using the SGG-UGM-2 high-resolution gravity model data. The calculation results obtained that the gravity disturbance value from the GOCE data was around -140 to 200 mGal, while the value of the gravity disturbance from the SGG-UGM-2 data was around -180-300 mGal. The GOCE gravity disturbance map and the SGG-UGM-2 can detect the Subduction Trench, Mentawai Fault, and West Andaman Fault on Sumatra Island with negative values, while the Sumatran Fault Zone (SFZ) along Sumatra Island with positive values in line with the presence of mountain ranges. The results of the SGG-UGM-2 data processing for the gravity disturbance are more detailed than GOCE because the SGG-UGM-2 data degree is higher than that of GOCE. GOCE complete bouguer anomaly value is around 40-560 mGal, while the value of complete bouguer anomaly SGG-UGM-2 is around 60-560 mGal. The complete bouguer anomaly maps from GOCE and SGG-UGM-2 can detect patterns from the Subduction Trench, Mentawai Fault, and West Andaman Fault but cannot clearly detect SFZ. The complete bouguer anomaly can also detect differences between oceanic and continental crust. The GOCE and the SGG-UGM-2 complete bouguer anomaly map show almost similar patterns and the ability to detect geological structures for sub and regional Sumatra Island. In addition, GOCE data detect geological structures more clearly than GRACE data.

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Section: Introductionmentioning

confidence: 90%

A Comparison of Geologic Structure Detection of Sumatera Island Using Goce Satellite Gravity Data and Sgg-Ugm-2 Data

Natul

Heliani

2022

J. Geoscience Eng. Environ. Technol.

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“…The Bouguer gravity anomaly data are from the gravity field model SGG-UGM-2 (Ariff NSE et al, 2021;Liang W et al, 2020). The model used Gravity Field and Steady-State Ocean Circulation Explorer (GOCE), Gravity Recovery and Climate Experiment (GRACE), satellite altimetry data, and EGM2008 model gravity anomaly data to solve the resolution of 5′× 5 ′ Earth gravity field model.…”

Section: Gravity Anomaly Of Moho In the Tpmentioning

confidence: 99%

Moho depth inversion in the Tibetan Plateau from high-precision gravity data

He¹,

Fang²,

Sun³

et al. 2023

Earth and Planetary Physics

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 The 2159-order high-precision gravity field model (SGG-UGM-2) is combined with the CRUST1.0 model to remove the influence of other factors to accurately obtain the high-precision Moho gravity anomaly of the Tibetan Plateau.  With the constraints of multiple seismic profiles, the inversion parameters (average depth and interface density difference) required for Moho inversion are obtained.  The Bott iteration method is introduced to improve the iteration efficiency and accuracy of the Parker-Oldenburg inversion method, and the high-precision Moho depth in the Qinghai-Tibet Plateau is obtained quickly and effectively. It is found that the Moho in this area has the characteristics of two depressions and two uplifts.

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“…Finalmente, el modelo SGG-UGM-2 (Liang et al, 2020) incorpora información de las últimas misiones GOCE y GRACE, presenta una base actualizada de anomalías de gravedad marinas y se completa con el EGM2008.…”

Section: Modelos De Geoide Utilizadosunclassified

Análisis de modelos de geoide globales y locales en la zona de El Shincal de Quimivil (Londres, Catamarca)

Cogliano

Gomez

Romano

et al. 2023

AGL

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El Shincal de Quimivil es un sitio arqueológico de origen incaico, ubicado en la localidad de Londres (Catamarca, Argentina) y cuya preservación se halla comprometida por la extensión de cárcavas. Con el fin de controlar la degradación del sitio,además de otros estudios, se elaboró un modelo digital de terreno (MDT) basado en LIDAR aéreo, que permitió representar la superficie con precisión próxima a 10 cm. Las alturas del MDT, originalmente elipsoidales, deben ser referidas a una superficie física con el fin de estudiar el comportamiento del agua, para lo cual es necesario contar con un modelo de geoide de calidad similar. En este trabajo presentamos los avances realizados en este sentido, sobre diferentes modelos geopotenciales globales y uno regional, a partir de información altimétrica existente y de un nuevo tramo denivelación que corre entre la ruta nacional 40 y El Shincal de Quimivil.

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A High-Resolution Earth’s Gravity Field Model SGG-UGM-2 from GOCE, GRACE, Satellite Altimetry, and EGM2008

Cited by 72 publications

References 42 publications

A Comparison of Geologic Structure Detection of Sumatera Island Using Goce Satellite Gravity Data and Sgg-Ugm-2 Data

A Comparison of Geologic Structure Detection of Sumatera Island Using Goce Satellite Gravity Data and Sgg-Ugm-2 Data

Moho depth inversion in the Tibetan Plateau from high-precision gravity data

Análisis de modelos de geoide globales y locales en la zona de El Shincal de Quimivil (Londres, Catamarca)

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