Results 41 to 50 of about 6,478 (164)
Artificial Neural Network for Downward Continuation of Anomalous Magnetic Fields
Russian Journal of Earth SciencesThe downward continuation of an anomalous magnetic field is used for many applications in geophysics. However, such a problem is ill-posed, so it does not have a unique and stable solution.
Rytov Ruslan
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A Recursive Truncated Taylor Expansion Downward Continuation Method for Geomagnetic Field
Applied SciencesIn aeromagnetic detection and geomagnetic navigation, the reference geomagnetic maps usually need to be continued to different altitudes. Traditionally, the geomagnetic field upward continuation is stable.
Ke Wan +9 more
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Open Geosciences, 2023 In Cameroon, the drying up of wells and boreholes during the dry season is characterized by a lack of knowledge about the surface structures of the subsoil and the spatial distribution of groundwater.
Ndongmo Ghislain Nkamgan +3 more
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Terrestrial, Atmospheric and Oceanic Sciences, 2010 We investigated the Fourier transform-based downward continuation (DWC) of airborne gravity anomalies around Taiwan assisted by topographic information. The topographic data are from the latest collections of elevations and ocean depths.
Yu-Shen Hsiao Cheinway Hwang
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Remote Sensing, 2019 Time-variable gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) and GRACE-Follow On (GRACE-FO) missions and satellite altimetry measurements from CryoSat-2 enable independent mass balance estimates of the Earth’s ...
Ingo Sasgen +3 more
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Migration Using a Transversely Isotropic Medium with Symmetry Normal to the Reflector Dip
International Journal of Geophysics, 2011 A transversely isotropic (TI) model in which the tilt is constrained to be normal to the dip (DTI model) allows for simplifications in the imaging and velocity model building efforts as compared to a general TI (TTI) model. Although this model cannot be
Tariq Alkhalifah, Paul Sava
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Predicting Depth of Mineral Deposit using Gravity-Density Downward Correlation by Fourier Transform
Геофизический журнал, 2016 Residual gravity anomalies are the superposition of effects originating from several interfaces in the subsurface. In downward projection of the anomalies for the determination of the depth of the particular substructure which accounts for the bulk of ...
E. E. Epuh +2 more
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A combination of downward continuation and local approximation for harmonic potentials [PDF]
Inverse Problems, 2014 This paper presents a method for the approximation of harmonic potentials that combines downward continuation of globally available data on a sphere $Ω_R$ of radius $R$ (e.g., a satellite's orbit) with locally available data on a sphere $Ω_r$ of radius ...
openaire +2 more sources
The nature and origin of magnetic anomalies over the Gölcük caldera; Isparta; South-Western Turkey
Геофизический журнал, 2018 For the first time; ground magnetic survey was performed which data were inverted by means of total horizontal derivative; horizontal gradient analytic signal; and hyperbolic tilt angle techniques to identify subsurface volcanic structures around ...
M. N. Dolmaz +4 more
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Remote SensingGravity inversion plays a crucial role in mineral exploration and resource evaluation, yet conventional depth-weighting methods often impose uniform resolution across all depths and fail to effectively delineate anomaly boundaries. This study presents an
Zhe Qu +6 more
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