Seismic Raypath and Wavefront Models in the Lithofacies of the Niger Delta, Nigeria
Journal Title: Current Journal of Applied Science and Technology - Year 2017, Vol 20, Issue 2
Abstract
Seismic raypaths and wavefronts model in the vertically anisotropic lithofacies of the Niger Delta are presented. These models based on the linear increase of velocity with depth are defined by the parametric equations: For raypaths [ (centre) and (radii)]; and for Wavefronts [ (centre) and (radii)]. The take-off velocity, V0 = 1656 ms-1 and vertical velocity gradient, k = 0.44 s-1 previously determined for the Niger Delta served as input to these equations to generate the models in Graph (version 4.3) software. Raypaths are at offsets from 400 to 2000 m at 400 m intervals while the wavefronts are at travel times from 20 to 100 ms at 20 ms intervals. Raypaths are observed to be different from straight lines and travel in circular paths while wavefronts are circular arcs travelling greater distance in the vertical direction than in the horizontal for equal travel times. These models provide a basic framework in the Niger Delta for accurate ray tracing, velocity models development and traveltime calculations in seismic processing.
Authors and Affiliations
G. I. Alaminiokuma
Keywords
Related Articles
- EP ID EP318950
- DOI 10.9734/BJAST/2017/5100
- Views 82
- Downloads 0
Analysis of Dispersion and Nonlinear Property in Doping Defected Core Spiral Photonic Crystal Fiber
We propose a novel nearly zero-dispersion fiber (NZDF) at the operating wavelength based on GeO2 doped SiO2 square defected core spiral photonic crystal fiber (dd-SPCF). The 2-D finite element method with perfectly match...
Molecular Identification and Characterization of Alphasatellites Associated with Okra Enation Leaf Curl Virus
Symptomatic okra plants showing leaf curling, typical yellowing and thickening of veins were collected and characterized. Full genome of the virus was amplified using phi-29 polymerase exploiting rolling circle amplifica...
Superluminal Hydrogen Atom in a Constant Magnetic Field in (3+1)-dimensional Spacetime (II)
As has usually been the case in the tradition of some scientific novel ideas, we use the hydrogen atom as a “test particle”, in the context of superluminal dynamical system theory. In Paper (I) of this series, the fundam...
Climate Change and Its Impact on Crop Productivity
The changing patterns in day to day weather situations, rising CO2 concentrations, rising sea level, increasing temperature is an indicative of the fact that climate change being encountered by the life of earth at prese...
Effect of the Stage of Ripening on the Nutrients, Anti-nutrients and Functional Properties of Flours Made from Whole Plantain Fruit
Background and Aim: Plantain processing generates large quantities of peel that is discarded despite its nutritional and bioactive constituents. The aim of the study was to produce whole plantain flour at unripe, semi-ri...