A MatLab Script to Perform Gravity Terrain Corrections Using DEM-EU Digital Elevation Model in a Teaching Lab

Almeida, Fernando; Matias, M.J. Senos; Lourenco, Marisa; Martins, A.

doi:10.3997/2214-4609.201802654

Cited by 1 publication

(1 citation statement)

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“…Due to the complex topography of the study area, the terrain correction for each location, ∆g i T , was also computed. Its computation was performed with the prism method (e.g., Almeida et al., 2018; Nagy, 1966) considering the regional DEM shown in Figure S1 in Supporting Information and compared with another independent method (Hammer, 1939). The complete Bouguer anomaly can be then computed as

{\increment}{g}_{i}^{\text{CB}}={\increment}{g}_{i}^{B}+{\increment}{g}_{i}^{T}

…”

Section: Methodsmentioning

confidence: 99%

Gravity Data Allow to Image the Shallow‐Medium Subsurface Below Mud Volcanoes

Nespoli,

Antonellini,

Albarello

et al. 2023

Geophysical Research Letters

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The debate about the conceptual model of mud volcanoes functioning is still alive in the literature. A large part of the literature focuses on the characterization of the deep reservoir where expelled fluids are expected to originate. Another part of literature is focused on the study of the shallow system of mud volcanoes, which could influence the short‐term variations in mud volcanoes activity. We present and analyze a new data set of micro‐gravimetric data to study the area of the Nirano Salse, Italy. Unlike what is commonly assumed for the study area, our results suggest that the geomorphology of the Nirano Salse is not related to a caldera collapse above a shallow mud chamber, but to the surface expression of slip distribution of a fault termination along which the fluids ascended to the surface. We believe that gravimetric data can significantly improve the study of hydrocarbon seeps and mud volcanism.

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