FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2749611605> ?p ?o ?g. }

• W2749611605 endingPage "1161" @default.
• W2749611605 startingPage "1154" @default.
• W2749611605 abstract "In many European countries, normal heights referred to the quasi-geoid as introduced by Molodenskij in the mid-20th century are preferred to the classical height system that consists of orthometric heights and the geoid as a reference surface for these heights. The rationale for this choice is supposed to be that in the classical height system, neither the geoid, nor the orthometric height can be ever known with centimetre level accuracy because one would need to know the topographical mass density to a level that can never be achieved. The aim of this paper is to question the validity of this rationale. The common way of assessing the congruency of a local geoid model and the orthometric heights is to compare the geoid heights with the difference between orthometric heights provided by leveling and geodetic heights provided by GNSS. On the other hand, testing the congruency of a quasi-geoidal model with normal height a similar procedure is used, except that instead of orthometric heights, normal heights are employed. For the area of Auvergne, France, which is now a more or less standard choice for precise geoid or quasi-geoid testing, only the normal heights are supplied by the Institute Geographic National, the provider of the data. This is clearly the consequence of the European preference for the Molodenskij system. The quality of the height system is to be judged by the congruency of the difference of the geoid/quasi-geoid heights subtracted from the geodetic heights and orthometric/normal heights. To assess the congruency of the classical height system, the Helmert approximation of orthometric heights is typically used as the transformation between normal and Helmert's heights is easily done. However, the evaluation of the differences between Helmert's and the rigorous orthometric heights is somewhat more involved as will be seen from the review in this paper. For the area of interest, the differences between normal and Helmert's heights at the control leveling points range between − 9.5 and 0 cm, differences between Helmert's and the rigorous orthometric heights vary between − 3.6 and 1.1 cm. The local gravimetric geoid model of Auvergne, computed by the Stokes–Helmert technique, is used here to illustrate the accuracy of the classical height system. Results show a very reasonable standard deviation (STD) of 3.2 cm of the differences between geoid values, derived from control leveling points, and gravimetric geoid heights when Helmert's heights are employed and even a smaller STD of 2.9 cm when rigorous orthometric heights are used. A corresponding comparison of a quasi-geoid model, computed by Least-Squares Modification of Stokes method, with normal heights show an STD of 3.4 cm." @default.
• W2749611605 created "2017-08-31" @default.
• W2749611605 creator A5022459985 @default.
• W2749611605 creator A5047873935 @default.
• W2749611605 creator A5052441241 @default.
• W2749611605 creator A5065272392 @default.
• W2749611605 creator A5084243789 @default.
• W2749611605 date "2017-08-26" @default.
• W2749611605 modified "2023-10-14" @default.
• W2749611605 title "In defense of the classical height system" @default.
• W2749611605 cites W1972452461 @default.
• W2749611605 cites W2158136626 @default.
• W2749611605 cites W2160503736 @default.
• W2749611605 doi "https://doi.org/10.1093/gji/ggx366" @default.
• W2749611605 hasPublicationYear "2017" @default.
• W2749611605 type Work @default.
• W2749611605 sameAs 2749611605 @default.
• W2749611605 citedByCount "9" @default.
• W2749611605 countsByYear W27496116052018 @default.
• W2749611605 countsByYear W27496116052019 @default.
• W2749611605 countsByYear W27496116052021 @default.
• W2749611605 countsByYear W27496116052022 @default.
• W2749611605 countsByYear W27496116052023 @default.
• W2749611605 crossrefType "journal-article" @default.
• W2749611605 hasAuthorship W2749611605A5022459985 @default.
• W2749611605 hasAuthorship W2749611605A5047873935 @default.
• W2749611605 hasAuthorship W2749611605A5052441241 @default.
• W2749611605 hasAuthorship W2749611605A5065272392 @default.
• W2749611605 hasAuthorship W2749611605A5084243789 @default.
• W2749611605 hasConcept C113346285 @default.
• W2749611605 hasConcept C127313418 @default.
• W2749611605 hasConcept C13280743 @default.
• W2749611605 hasConcept C14279187 @default.
• W2749611605 hasConcept C180966878 @default.
• W2749611605 hasConcept C41008148 @default.
• W2749611605 hasConcept C58754882 @default.
• W2749611605 hasConcept C60229501 @default.
• W2749611605 hasConcept C76155785 @default.
• W2749611605 hasConcept C8058405 @default.
• W2749611605 hasConcept C80989030 @default.
• W2749611605 hasConceptScore W2749611605C113346285 @default.
• W2749611605 hasConceptScore W2749611605C127313418 @default.
• W2749611605 hasConceptScore W2749611605C13280743 @default.
• W2749611605 hasConceptScore W2749611605C14279187 @default.
• W2749611605 hasConceptScore W2749611605C180966878 @default.
• W2749611605 hasConceptScore W2749611605C41008148 @default.
• W2749611605 hasConceptScore W2749611605C58754882 @default.
• W2749611605 hasConceptScore W2749611605C60229501 @default.
• W2749611605 hasConceptScore W2749611605C76155785 @default.
• W2749611605 hasConceptScore W2749611605C8058405 @default.
• W2749611605 hasConceptScore W2749611605C80989030 @default.
• W2749611605 hasIssue "2" @default.
• W2749611605 hasLocation W27496116051 @default.
• W2749611605 hasOpenAccess W2749611605 @default.
• W2749611605 hasPrimaryLocation W27496116051 @default.
• W2749611605 hasRelatedWork W2184605615 @default.
• W2749611605 hasRelatedWork W2236387267 @default.
• W2749611605 hasRelatedWork W2767783069 @default.
• W2749611605 hasRelatedWork W2888098859 @default.
• W2749611605 hasRelatedWork W2901164268 @default.
• W2749611605 hasRelatedWork W2954792388 @default.
• W2749611605 hasRelatedWork W3107672957 @default.
• W2749611605 hasRelatedWork W3126153698 @default.
• W2749611605 hasRelatedWork W3182578896 @default.
• W2749611605 hasRelatedWork W4289389770 @default.
• W2749611605 hasVolume "211" @default.
• W2749611605 isParatext "false" @default.
• W2749611605 isRetracted "false" @default.
• W2749611605 magId "2749611605" @default.
• W2749611605 workType "article" @default.