RESEARCH ON METHODS OF DETERMINING LEVEL SURFACES OF THE EARTH'S GRAVITY FIELD.
Abstract
Part I deals with the theoretical possibility of determining refraction by measuring the dispersion angle between rays of visible light with different wave-lengths. Part II describes two instruments for measuring such dispersion-angles. Part III deals with another method of determining geoidal deflections, including also geoidal connections over open sea-areas and medium distances. This method, introduced by the author, uses gravity data together with astro-geodetic reflections. Part IV describes an extrapolation method for the upwards continuation of gravity and deflections. Part V introduces the problem of an eventual secular variation of gravity, due to the dynamical properties of the outer core, and has been studied by dr Andreas Vogel. An attempt of using horisontal pendulums for the purpose of detecting such an effect has been started.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1964
- Accession Number
- AD0613012
Entities
People
- Andreas Vogel
- Erik Tengstrom
Organizations
- Uppsala University