| viXra.org > Geophysics > 2305 |
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| viXra.org > Geophysics > 2305 |
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[6] viXra:2305.0175 [pdf] submitted on 2023-05-30 04:01:27
Authors: Abdelmajid Ben Hadj Salem
Comments: 20 Pages. In French
In this lecture, we present the basic elements necessary for reading topography maps and terrestrial positioning.
Category: Geophysics
[5] viXra:2305.0097 [pdf] submitted on 2023-05-12 14:57:23
Authors: Abdelmajid Ben Hadj Salem, Helmut Moritz
Comments: 16 Pages.
This paper is a tribute to the memory of professor and geodesist Helmut Moritz who passed away in December 2022. We present a paper about the theory of geodetic refraction written by him and presented during the International Symposium " Figure of the Earth and Refraction ",Vienna, March 14th-l7th, 1967.
Category: Geophysics
[4] viXra:2305.0095 [pdf] submitted on 2023-05-13 02:48:38
Authors: Richard A. Peters
Comments: 96 Pages.
The periodic table is a tabular representation of the 118 known chemical elements, including 92 naturally occurring elements. These elements are classified based on their atomic structure and properties, and are essential components of all matter in the universe.The elements can be broadly categorized into metals, non-metals and metalloids. Metals, such as iron, copper and gold are good conductors of electricity and have high melting and boiling points. Non-metals, such as carbon, nitrogen and oxygen, are poor conductors of electricity and have lower melting and boiling points. Metalloids, such as silicon and germanium, have properties that are intermediate between metals and non-metals.The properties of the elements vary widely, from noble gasses that are chemically inert and have low boiling points, to the highly reactive alkali metals that are easily oxidized and have low melting points. Many of the elements are essential for life, such as carbon, nitrogen and oxygen, while others have important industrial applications, such as iron, aluminum and copper.The study of the elements and their properties is essential to understanding the behavior of matter and the natural world. Advances in science and technology have led to the discovery of new elements and the development of new materials with unique properties and applications.
Category: Geophysics
[3] viXra:2305.0082 [pdf] submitted on 2023-05-10 00:32:08
Authors: Abdelmajid Ben Hadj Salem
Comments: 17 Pages. In French
It is a tribute to the memory of my professor of geodesy Jacques Le Menestrel. We give a numerical version of the two first chapters of his booklet "Dynamical Geodesy". It is part of his complete geodesy course, taught in the 70s of the last century, at the Ecole Nationale des Sciences Géographiques (ENSG), France.
Category: Geophysics
[2] viXra:2305.0071 [pdf] submitted on 2023-05-09 01:28:34
Authors: Umbar Esanov
Comments: 4 Pages.
This paper presents the results of experimental work with liquid benzene derivatives using the Mandelstam-Brillouin spectroscopy method. It shows the results of measuring the hypersound velocity and absorption in the pressure range 0.1—100 MPa and temperatures 293K-313K in the investigated liquids. With increasing pressure, an increase in hypersound velocity and a decrease in its absorption are found.
Category: Geophysics
[1] viXra:2305.0019 [pdf] submitted on 2023-05-03 01:14:37
Authors: Richard A. Peters
Comments: 22 Pages.
Magnetic anomalies are variations in the Earth's magnetic field that are caused by differences in the magnetic properties of rocks in the Earth's crust. These anomalies can be used to study the geology and structure of the Earth's crust and can provide important information about the location and size of geological features, includingasteroid impact structures. Asteroid impact structures are large depressions in the Earth's crust that are formed by the impact of an asteroid or other celestial body. When an asteroid impacts the Earth's surface, it can cause significant disruption to the local geology, including alterations to the magnetic properties of the rocks. This disruption can result in a measurable magnetic anomaly that is associated with the impact structure. By studying the magnetic anomalies associated with asteroid impact structures, scientists can gain important insights into the size, shape, and structure of the impact structure, as well as the nature of the rocks that were impacted. Magnetic surveys can be used to map the extent and characteristics of the anomaly, providing valuable information for geologists and mineral exploration companies. In addition to providing insights into the geology and structure of asteroid impact structures, the study of magnetic anomalies can also help scientists to better understand the history of the Earth's magnetic field and the processes that have shaped the Earth's crust over geological time.
Category: Geophysics
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