Topic
Eötvös effect
About: Eötvös effect is a research topic. Over the lifetime, 3 publications have been published within this topic receiving 10 citations.
Papers
TL;DR: The first engineering test flight occurred on 11 October 1983, during the seasonal wind reversal and was very successful as mentioned in this paper, with two hours of data collected at each of 30 km and 26 km altitudes.
7 citations
1 Jan 1997
TL;DR: In this article, the Eotvos effect is also a major error source which restricts the accuracy of the gravity survey accuracy, particularly at short wavelengths, and a low pass filter with a time constant of 3 to 5 minutes is used to remove the vertical acceleration.
Abstract: Marine gravity survey systems have been developed for many decades. The main error sources for such systems are well known and the dominant errors are associated with the dynamic motion of the ship. With the current systems, the horizontal ship acceleration is normally isolated by using a stabilised platform which aligns the gravity sensor to the local vertical. The vertical acceleration is removed by using a low pass filter with a time constant of 3 to 5 mins. This process, however, inevitably reduces the accuracy and the resolution of the gravity measurement, particularly at short wavelengths. The Eotvos effect is also a major error source which restricts the gravity survey accuracy.
1 citations
TL;DR: In this article, the relationship between weight and gravitation is established in a direct and pedagogical manner readily understandable by undergraduate students, and the analysis applies to the Newtonian limit of gravitation, which coincides with the Earth's gravitational force modified by diurnal rotation around a polar axis and nonuniformity of external gravitational bodies.
Abstract: This paper deals with the factors that influence the weight of an object near the Earth's surface. They are: (1) the Earth's gravitational force, (2) the centrifugal force due to the Earth's diurnal rotation, and (3) tidal forces due to the gravitational field of the Moon and Sun, and other solar system bodies to a lesser extent. Each of these three contributions is discussed and expressions are derived. The relationship between weight and gravitation is thus established in a direct and pedagogical manner readily understandable by undergraduate students. The analysis applies to the Newtonian limit of gravitation. The derivation is based on an experimental (or operational) definition of weight, and it is shown that it coincides with the Earth's gravitational force modified by diurnal rotation around a polar axis and non-uniformity of external gravitational bodies (tidal term). Two examples illustrate and quantify these modifications, respectively the Eotvos effect and the oceanic tides; tidal forces due to differential gravitation on a spacecraft and an asteroid are also proposed as examples. Considerations about inertia are also given and some comments are made about a widespread, yet confusing, explanation of tides based on a centrifugal force. Finally, the expression of the potential energy of the tide-generating force is established rigorously in the appendix.
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2015 | 1 |
| 1997 | 1 |
| 1985 | 1 |