Geophysics

2603 Submissions

[6] viXra:2603.0123 [pdf] submitted on 2026-03-25 00:07:48

Summary of the Main Technical Procedures for Linking Tunisian Airports to the WGS84 Global Geodetic System

Authors: Abdelmajid Ben Hadj Salem
Comments: 3 Pages. In French

This article is a summary of the main technical procedures for linking Tunisian airports to the WGS84 global geodetic system.
Category: Geophysics

[5] viXra:2603.0109 [pdf] submitted on 2026-03-22 00:07:18

Examples of Exams of Physical Geodesy of The German Geodesy School

Authors: Abdelmajid Ben Hadj Salem
Comments: 12 Pages. In French

This document includes the exams for the physical geodesy course given at the Institute of Geodesy of the University of Stuttgart during the period 2007-2013. It is an invitation to the students of the French school of Physical Geodesy.
Category: Geophysics

[4] viXra:2603.0106 [pdf] submitted on 2026-03-19 23:58:17

Reflections on the Implementation of a New Geodetic System

Authors: Abdelmajid Ben Hadj Salem
Comments: 4 Pages. In French

This note, which I wrote in 1988, is a reflection on a methodology for setting up a geodetic system for a country without geodesy.
Category: Geophysics

[3] viXra:2603.0095 [pdf] submitted on 2026-03-18 09:27:45

Establishment of a Network of Permanent GPS Stations and a Basic Geodetic Network in Algeria

Authors: Abdelkader Sellal, Abdelmajid Ben Hadj Salem
Comments: 8 Pages.

This article summarizes the IT equipment requirements (software and hardware) and technical methodologies for establishing a network of permanent GPS stations and a basic geodetic network for Algeria.
Category: Geophysics

[2] viXra:2603.0074 [pdf] submitted on 2026-03-15 00:24:12

A Study on the Unified Dynamic Laws of Tropical Cyclone Vortices and Keplerian Systems

Authors: Yi Wang
Comments: 5 Pages. (Note by viXra Admin: Please submit article written with AI assistance to ai.viXra.org)

This study takes typically near-circular tropical cyclones over multiple global sea areas as the research objects, and deploys observation profiles around the 64 kt, 50 kt and 34 kt wind radii. The core objective is to verify whether the V²R value in the full-scale main circulation region of tropical cyclones is a constant. All study cases adopt the wind circle data of the same tropical cyclone at the identical observation time to ensure the energy stability of the cyclone. The verification results show that the V²R conservation characteristic of tropical cyclones has cross-sea universality, and the fluctuation range of measured data is within a reasonable error interval; V²R is a deformation of the Kepler constant K (R³/T² = K), and tropical cyclones and the Keplerian system follow the unified dynamic law of central force field vortices.
Category: Geophysics

[1] viXra:2603.0053 [pdf] submitted on 2026-03-09 20:49:11

Gravimetry and The Era of Development

Authors: Abdelmajid Ben Hadj Salem
Comments: 31 Pages. In French

This [article] represents the national report about the gravimetry activity in Tunisia, of the year 1970.
Category: Geophysics