GRAV3D Validation using Generalized Cross-Validation (GCV) Algorithm by Lower Bounds Approach for 3D Gravity Data Inversion

Mochamad Aryono Adhi, Wahyudi Wahyudi, Wiwit Suryanto, Muh Sarkowi


The completion of gravitational data inversion results in a smooth recovered model. GRAV3D is one software that can be used to solve 3D inversion problems of gravity data. Nevertheless there are still fundamental problems related to how to ensure the validity of GRAV3D to be used in 3D inversion. One approach used is to use lower bounds as inversion parameters. In this study lower bounds are set from  to . The results obtained show that the use of lower bounds decreases resulting in a larger data misfit which means that the more data that meets the tolerance calculation, the better recovered model produced.


GRAV3D, 3D inversion, Validation, lower bounds

Full Text:



P. Macqueen, “Forward Modeling to Assess and Improve Gravity Network Geometry at Kilauea Volcano , Hawai ` i,” Interpret. A J. Bible Theol., vol. 1, pp. 24–44, 2011.

P. G. Macqueen, “Geophysical Investigations of Magma Plumbing Systems at Cerro Negro Volcano , Nicaragua,” 2013.

O. Mahmoodi, R. S. Smith, and B. Spicer, “Using constrained inversion of gravity and magnetic field to produce a 3D litho-prediction model,” Geophys. Prospect., vol. 65, no. 6, pp. 1662–1679, 2017.

UBC, “GRAV3D Version 3.0 A Program Library for Forward Modelling and Inversion of Gravity Data over 3D Structures.,” Vancouver, British Columbia, 2005.

Y. Deng, Z. Zhang, J. Badal, and W. Fan, “3-D density structure under South China constrained by seismic velocity and gravity data,” Tectonophysics, vol. 627, pp. 159–170, 2014.

J. Zurek and G. Williams-Jones, “The shallow structure of Kīlauea caldera from high-resolution Bouguer gravity and total magnetic anomaly mapping: Insights into progressive magma reservoir growth,” J. Geophys. Res. Solid Earth, vol. 118, no. 7, pp. 3742–3752, 2013.



  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.