NDLI: A refined conversion from normal height to orthometric height

Content Provider	Springer Nature Link
Author	Sjöberg, L. E.
Copyright Year	2006
Abstract	The difference between orthometric and normal heights (or the height anomaly and the geoid height) is usually approximated by a term consisting of the Bouguer anomaly times elevation divided by normal gravity. We derive an improved formula, which includes a topographic roughness term (terrain correction) and a term due to the lateral variation of topographic density, for the practical application of this conversion. It is shown that for high mountainous areas with rough topography these two terms are of the same order as the Bouguer anomaly related term. Already for elevations of a few hundred metres they could reach the order of a centimetre. In addition, for the more precise computations in high mountainous areas, a term related with the downward continuation of topographic potential from the surface to sea level could be significant.
Starting Page	595
Ending Page	606
Page Count	12
File Format	PDF
ISSN	00393169
Journal	Studia Geophysica et Geodaetica
Volume Number	50
Issue Number	4
e-ISSN	15731626
Language	English
Publisher	Kluwer Academic Publishers-Consultants Bureau
Publisher Date	2006-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	normal height orthometric height terrain correction topographic potential Structural Geology Geophysics/Geodesy Meteorology/Climatology
Content Type	Text
Resource Type	Article
Subject	Geochemistry and Petrology Geophysics

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A refined conversion from normal height to orthometric height