Downward continuation (DC) of the gravity potential field is an important approach used to understand and interpret density structure boundary anomalous bodies. It widely delineate highlight local shallow sources. However, it well known that direct DC transformation in frequency domain unstable easily affected by high-frequency noise. Recent deep learning applications have led development image...

We introduce 2D potential field migration for the interpretation of gravity gradiometry data. This method is based on a direct integral transformation of the observed gravity gradients into subsurface density distributions which can be used for realtime imaging or as an a priori model for subsequent 3D regularized inversion. Potential field migration is very fast and stable with respect to nois...

The Green's function of the Poisson equation, and its spatial derivatives, lead to a family of wavelets specifically tailored to potential fields. Upward continuation of the field is seen to be identical to these wavelets' scale change operation. The maxima at all heights of the field's horizontal gradients are termed the field's multiscale edges. A multiscale edge's field strength variation an...

Potential field data are of great significance to the study geological characteristics. Downward continuation potential converts from a high plane low plane. Since this method is mathematically an inverse problem solution, it unstable. The Tikhonov regularization strategy effective means downward field. However, achieving high-precision requirements in stage precise geophysical exploration stil...

Thepresentpaper reviews thecontemporary stateofdefinitionand theoryof thegeoid. Key features are: quasigeoid, externalgravitational field from satellites and its analytical downward continuation to the Earth's interior, data combination by least-squares collocation, and a new view of gravity reduction. This is done under the modern systematic perspective provided by the possibility of a purely ...

SUMMARY The purpose of marine seismic experiments is to provide information the structure and physical properties subsurface. P-wave velocity distribution most commonly modelled property, usually by inversion arrival times or waveform attributes. In wide-angle reflection/refraction (WAS) experiments, phases identified in data recorded ocean bottom seismometers (OBS) are used image relatively de...