Geophysics

2211 Submissions

[6] viXra:2211.0148 [pdf] submitted on 2022-11-24 13:47:51

Puzzling, Very Slow Oscillations of the Air Pressure in Europe

Authors: Herbert Weidner
Comments: 3 Pages.

If one compares long-term recordings of the air pressure measured by neighboring barometers, one observes synchronous oscillations at certain frequencies for which there is no known cause. Are they excited by gravitational waves?
Category: Geophysics

[5] viXra:2211.0141 [pdf] submitted on 2022-11-23 13:08:52

List of Documents Donated By Abdelmajid Ben Hadj Salem

Authors: Abdelmajid Ben Hadj Salem
Comments: 58 Pages. In Arabic, French and English. The documents can be consulted at the OTC library.

It is a list of documents donated by Abdelmajid Ben Hadj Salem, General Geographer Engineer retired from the textit{Office de la Topographie et du Cadastre de la Tunisie} (OTC) to the OTC library, August 2019. It is about 900 items. The fields of the documents are Mathematics, Physics, Geodesy, Cartography, Photogrammetry, Astronomy, Geophysics, Theory of the errors, Theory of the Least squares, Celestial Mechanics, Real Estate, Land Management, Languages, Divers,...
Category: Geophysics

[4] viXra:2211.0132 [pdf] submitted on 2022-11-22 18:41:35

The New Tunisian Triangulation -NTT- : The Decree of 10 February 2009

Authors: Abdelmajid Ben Hadj Salem, Kamel Naouali
Comments: 8 Pages. In French. The paper was presented at the Scientific Symposium on " Buildings in Co-ownership’’ Tunis, 28-29 April 2009.

In this article, we detail the decree of February 10, 2009, which defines the New Tunisian Triangulation -NTT- consisting of the three basic foundations of topographic, cartographic, and geodetic work, namely:- The official terrestrial geodetic system of Tunisia.- The new cartographic mapping representation.- The general precision leveling network.Some historical elements are given to explain the necessity and the interest of this order.
Category: Geophysics

[3] viXra:2211.0070 [pdf] submitted on 2022-11-12 00:16:25

The Digital Level

Authors: Abdelmajid Ben Hadj Salem
Comments: 8 Pages. In French

In this communication, we present the digital level. The principle of operation and measurements as well as the advantages of the digital level are detailed.
Category: Geophysics

[2] viXra:2211.0069 [pdf] submitted on 2022-11-12 00:17:53

Land Registration: Achievements and Future Prospects

Authors: Magtouf Rezgui, Abdelmajid Ben Hadj Salem
Comments: 39 Pages. In Arabic

We present the achievements and future prospects in terms of geodetic works and land registration (compulsory and optional) at the Office of Topography and Cartography of Tunisia (OTC)(October 2006).
Category: Geophysics

[1] viXra:2211.0030 [pdf] submitted on 2022-11-05 02:06:44

Transformation of Altitudes From One Geodetic System to Another

Authors: Abdelmajid Ben Hadj Salem
Comments: 11 Pages. In French

With the introduction of GPS (Global Positioning System) technology, which provides the user with his three-dimensional (X,Y,Z) position in the global geocentric system called WGS84 (World Geodetic System 1984), it is necessary to know the transformation of altitudes from the world geodetic system to the national or local geodetic system. We present below some models of transformations of passage of altitudes between geodetic systems.
Category: Geophysics