# Geophysics

## 1701 Submissions

[4] **viXra:1701.0605 [pdf]**
*replaced on 2017-02-07 03:28:33*

### Why Don't Clouds Fall?

**Authors:** Solomon I. Khmelnik

**Comments:** 4 Pages.

Based on gravitomagnetism theory, a mathematical model of cloud is suggested. It allows answering the question put in the header.

**Category:** Geophysics

[3] **viXra:1701.0570 [pdf]**
*replaced on 2017-02-07 03:29:37*

### Why do Clouds not Fall Down? \\ Почему облака не падают?

**Authors:** Solomon I. Khmelnik

**Comments:** 4 Pages.

Based gravitoelectromagnetism theory, described by the mathematical model of the cloud , that allows you to answer the question posed in the title. \\ На основе теории гравитомагнетизма предлагается математическая модель облака, которая позволяет ответить на вопрос, поставленный в заглавии.

**Category:** Geophysics

[2] **viXra:1701.0314 [pdf]**
*submitted on 2017-01-07 04:07:08*

### The Geometry of Non-Linear Adjustment of the Trisection Problem in the the Option of the 3-Dimensional Geodesy

**Authors:** Abdelmajid Ben Hadj Salem

**Comments:** 10 Pages. In French.

In an article, E. Grafarend and B. Schaffrin studied the geometry of non-linear adjustment of the planar trisection problem using the Gauss Markov model and the method of the least squares. This paper develops the same method working on an example of the determination of a point by trilateration in the three-dimensional geodetic option for determining the coordinates (x, y, z) of an unknown point from measurements known distances to n points.

**Category:** Geophysics

[1] **viXra:1701.0303 [pdf]**
*submitted on 2017-01-06 08:12:02*

### Geometric Theory of Inversion and Seismic Imaging II: Inversion + Datuming + Static + Enhancement

**Authors:** August Lau, Chuan Yin

**Comments:** 8 pages, 11 figures

The goal of seismic processing is to convert input data collected in the field into a meaningful image based on signal processing and
wave equation processing and other algorithms. It is normally a global approach like tomography or FWI (full waveform inversion).
Seismic imaging or inversion methods fail partly due to the thin-lens effect or rough surfaces. These interfaces are non-invertible. To
mitigate the problem, we propose a more stable method for seismic imaging in 4 steps as layer stripping approach of INVERSION + DATUMING + STATIC + ENHANCEMENT.

**Category:** Geophysics