Results 261 to 270 of about 108,737 (297)

Adaptive multinary inversion of gravity and gravity gradiometry data

GEOPHYSICS, 2017
We have developed a novel approach for inversion of gravity and gravity gradiometry data based on multinary transformation of the model parameters. This concept is a generalization of binary density inversion to the models described by any number of discrete model parameters.
Michael S. Zhdanov, Wei Lin
openaire   +1 more source

Optic Nerve Dysfunction During Gravity Inversion

Archives of Ophthalmology, 1987
Inversion in a head-down position (gravity inversion) results in an intraocular pressure of 35 to 40 mm Hg in normal subjects. We used computerized static perimetry to measure the visual fields of normal subjects during gravity inversion. There were no visual field changes in the central 6 degrees of the visual field compared with the baseline ...
G E, Sanborn, T R, Friberg, R, Allen
openaire   +2 more sources

Convergence of iterative gravity inversion

GEOPHYSICS, 1986
Oldenburg (1974) presented an iterative inversion procedure based on (a rearrangement of) Parker’s (1973) formula for rapid calculation of the gravity anomaly caused by an uneven layer; the algorithm proved effective in practice (Sprenke and Kanasewich, 1982).
openaire   +1 more source

3D joint inversion of gravity-gradient and borehole gravity data

Exploration Geophysics, 2017
Borehole gravity is increasingly used in mineral exploration due to the advent of slim-hole gravimeters. Given the full-tensor gradiometry data available nowadays, joint inversion of surface and borehole data is a logical next step. Here, we base our inversions on cokriging, which is a geostatistical method of estimation where the error variance is ...
Meixia Geng, Qingjie Yang, Danian Huang
openaire   +1 more source

Joint Gravity and Gravity Gradient Inversion for Subsurface Object Detection

IEEE Geoscience and Remote Sensing Letters, 2013
A novel approach of joint gravity and gravity gradient inversion is presented for passive subsurface object detection in this letter. Gravity and gravity gradient anomalies induced by an object can be measured and inversed to estimate the mass, orientation, and distance of the object.
null Lin Wu, null Xiaoping Ke, null Houtse Hsu, null Jian Fang, null Chengyi Xiong, null Yong Wang   +5 more
openaire   +1 more source

Inversion of Gravity Data

2016
The inversion process for gravity interpretation has to treat the intrinsic ambiguities of the gravimetric data; for this reason, the possible investigated models need to be constrained in order to recover the uniqueness of the inversion process. In this work, a novel approach to gravimetric inversion is presented. Geometric information on the existing
Vandone, V., Chiappa, F., Marchetti, P., Bernasconi, G., Dell'Aversana, P.   +4 more
openaire   +1 more source

Memory-efficient implementation of gravity inversion

GEOPHYSICS
The distribution of density plays a crucial role in interpreting subsurface geologic structures for resource exploration and deep-structure research. However, conventional gravity inversion often involves storing a dense, large sensitivity matrix, demanding significant computational resources.
Tao Chen, Ying Rao
openaire   +1 more source

Solvable models of quantum black holes: a review on Jackiw–Teitelboim gravity

Living Reviews in Relativity, 2023
Thomas Mertens, Gustavo Joaquin Turiaci
exaly  

Gravity Inversion

2017
Lars E. Sjöberg, Mohammad Bagherbandi
openaire   +1 more source

Gravity inversion therapy

Postgraduate Medicine, 1985
openaire   +1 more source