A new water-wave model has been derived which is based on variational techniques and combines a depth-averaged vertical (component of) vorticity with depth-dependent potential flow. The model facilitates the further restriction of the vertical profile of the velocity potential to n-th order polynomials or a finite-element profile with a small number of elements (say), leading to a framework for...

A computationally fast scheme has been developed which accurately evaluates the vertical integral of the transmission function for longwave radiative transfer, incorporating with the multi-parameter random model. In this scheme transmittances are calculated only between the half-levels of the vertical coordinate, while the Planck fluxes are evaluated at both the halfand full-levels. The vertica...

mhd boundary layer flow of two phase model nanofluid over a vertical plate is investigated both analytically and numerically. a system of governing nonlinear partial differential equations is converted into a set of nonlinear ordinary differential equations by suitable similarity transformations and then solved analytically using homotopy analysis method and numerically by the fourth order rung...

primary assumption in most problems of elasticity theory in petroleum geophysics is that the elastic media is isotropic. laboratory experiments confirmed that most rocks are anisotropic. if in one medium, properties vary with directions, it is named as anisotropic. knowledge about anisotropy reduces risk and cost of hydrocarbon production. in the present study, anisotropy of a carbonate reservo...

Snow sampling, either by inserting a tube through the entire snowpack or taking samples from vertical profile, is widely applied to measure snow depth, density, and water equivalent (SWE). A comparative study of snow-sampling methods was carried out on 24 March 2022 in Sodankylä, Finland. Six groups five countries (Estonia, Finland, Greenland, Iceland, Sweden) participated, using 12 different s...

We study the origin of cores and density profiles of gaseous baryonic structures in cosmology. By treating the baryons as a viscous gas, we find that both spheres and disks are possible solutions. We find analytically that the density profiles have inner and outer solutions, which in general are different. For disks we identify a central core, with density profile ρd = constant, and the outer p...

We present new measurements of the vertical density profile Earth's atmosphere at altitudes between 70 and 200 km, based on Earth occultations Crab Nebula observed with X-ray Imaging Spectrometer onboard Suzaku Hard Imager Hitomi. spectral variation due to atmospheric absorption is used derive tangential column densities absorbing species, i.e., N O including atoms molecules, along line sight. ...