2026-06-29T09:28:58Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/574602026-01-28T13:24:36Zcom_20.500.14352_14col_20.500.14352_15

Gravity inversion by means of growing bodies Camacho, AG, A.G. González Montesinos, Fuensanta Vieira, Ricardo 550.3 Canary-Islands Gran-Canaria Geochemistry & Geophysics Geofísica 2507 Geofísica This paper presents a gravity inversion method for determining the volumes of bodies with pre-established density contrasts. The method works step-by-step on a prismatic partition of the subsurface volume, expanding the anomalous bodies to fit the observed gravity values in a systematic exploration of model possibilities. The process is treated in a 3-D context; at the same time, it can determine a simple regional trend. Moreover, positive and negative density contrasts are simultaneously accepted. The solution is obtained by a double condition: (1) the e(2)-fitness to the observed gravity data (model fitness) and (2) the minimization of the total (weighted) anomalous mass (model smoothness). A positive parameter is used to balance the two minimization terms. The method is applied to a simulated example and also to a real example: the volcanic island of Gran Canaria (Canary Islands, Spain). In both cases, the results obtained show the possibilities of the method. Unidad Deptal. de Astronomía y Geodesia Fac. de Ciencias Matemáticas TRUE pub 2023-06-20T16:56:06Z 2023-06-20T16:56:06Z 2000 journal article https://hdl.handle.net/20.500.14352/57460 0016-8033 10.1190/1.1444729 eng open access application/pdf SOC EXPLORATION GEOPHYSICISTS