Matches in SemOpenAlex for { <https://semopenalex.org/work/W134160483> ?p ?o ?g. }
Showing items 1 to 79 of
79
with 100 items per page.
- W134160483 endingPage "77" @default.
- W134160483 startingPage "55" @default.
- W134160483 abstract "Different procedures for considering the effects of topographic masses in Stokes-Helmert scheme of geoid determination are reviewed. Classical integral formulae use a planar approximation of the geoid and a limited area of integration, and thus account only for the local contributions of topographic effects. In the other hand, the spherical harmonic representation of the topographic effects normally only includes the long-wavelength information. Another description of the effects of topographic masses given by Martinec & Vaniěek (1994a), Martinec & Vaniěek (1994b) uses near and far-zone integration areas and a spherical approximation of the geoid. Finally, two formulae, that combine short and long-wavelength contributions, are presented for topographical effects. These recent formulae imply that the integral formulae for determining the topographic effects may have some numerical problems in representing global information (for truncated integration domain). On the other hand, a representation of the effects by a set of spherical harmonic coefficients of the topography to, say, degree and order 360 leads to omission of significant short-wavelength information. All above-mentioned procedures were used for computation and comparisons in a test area in Iran with the maximum elevation of 3053 m. The results of these comparisons show that the Martinec & Vaniěek (1994a), Martinec & Vaniěek (1994b) integral formulae and the recent combination formulae presented by Sjoberg & Nahavandchi (1999) and Nahavandchi (2000) are in good agreement with each other. These formulae use a spherical approximation of the geoid, contrary to the classical formulae which use a planar approximation. Only the combined formulae include, however, all wavelength constituents and are recommended for precise geoid determination. The gravimetric geoidal heights were also computed applying different procedures of handling the topographic effects. The results were then compared with 7 Global Positioning System (GPS)-leveling stations in Iran. The standard deviation of the fit with the combined formulae is the best among the other methods and is equal to ±14.1 cm." @default.
- W134160483 created "2016-06-24" @default.
- W134160483 creator A5008141761 @default.
- W134160483 date "2003-01-01" @default.
- W134160483 modified "2023-09-22" @default.
- W134160483 title "Comparison of the classical and recent formulae of handling the effects of close and distant topographic masses in gravimetric geoid computations" @default.
- W134160483 hasPublicationYear "2003" @default.
- W134160483 type Work @default.
- W134160483 sameAs 134160483 @default.
- W134160483 citedByCount "0" @default.
- W134160483 crossrefType "journal-article" @default.
- W134160483 hasAuthorship W134160483A5008141761 @default.
- W134160483 hasConcept C11413529 @default.
- W134160483 hasConcept C120665830 @default.
- W134160483 hasConcept C121332964 @default.
- W134160483 hasConcept C127313418 @default.
- W134160483 hasConcept C13280743 @default.
- W134160483 hasConcept C134306372 @default.
- W134160483 hasConcept C17744445 @default.
- W134160483 hasConcept C180966878 @default.
- W134160483 hasConcept C199539241 @default.
- W134160483 hasConcept C2524010 @default.
- W134160483 hasConcept C2776359362 @default.
- W134160483 hasConcept C33923547 @default.
- W134160483 hasConcept C37054046 @default.
- W134160483 hasConcept C3768446 @default.
- W134160483 hasConcept C45374587 @default.
- W134160483 hasConcept C6260449 @default.
- W134160483 hasConcept C80989030 @default.
- W134160483 hasConcept C94625758 @default.
- W134160483 hasConceptScore W134160483C11413529 @default.
- W134160483 hasConceptScore W134160483C120665830 @default.
- W134160483 hasConceptScore W134160483C121332964 @default.
- W134160483 hasConceptScore W134160483C127313418 @default.
- W134160483 hasConceptScore W134160483C13280743 @default.
- W134160483 hasConceptScore W134160483C134306372 @default.
- W134160483 hasConceptScore W134160483C17744445 @default.
- W134160483 hasConceptScore W134160483C180966878 @default.
- W134160483 hasConceptScore W134160483C199539241 @default.
- W134160483 hasConceptScore W134160483C2524010 @default.
- W134160483 hasConceptScore W134160483C2776359362 @default.
- W134160483 hasConceptScore W134160483C33923547 @default.
- W134160483 hasConceptScore W134160483C37054046 @default.
- W134160483 hasConceptScore W134160483C3768446 @default.
- W134160483 hasConceptScore W134160483C45374587 @default.
- W134160483 hasConceptScore W134160483C6260449 @default.
- W134160483 hasConceptScore W134160483C80989030 @default.
- W134160483 hasConceptScore W134160483C94625758 @default.
- W134160483 hasIssue "1" @default.
- W134160483 hasLocation W1341604831 @default.
- W134160483 hasOpenAccess W134160483 @default.
- W134160483 hasPrimaryLocation W1341604831 @default.
- W134160483 hasRelatedWork W1998274242 @default.
- W134160483 hasRelatedWork W2019740403 @default.
- W134160483 hasRelatedWork W2092298966 @default.
- W134160483 hasRelatedWork W2105918692 @default.
- W134160483 hasRelatedWork W2112713623 @default.
- W134160483 hasRelatedWork W2123685048 @default.
- W134160483 hasRelatedWork W2151559541 @default.
- W134160483 hasRelatedWork W2164233479 @default.
- W134160483 hasRelatedWork W2271907779 @default.
- W134160483 hasRelatedWork W2605544712 @default.
- W134160483 hasRelatedWork W2605891076 @default.
- W134160483 hasRelatedWork W2607191225 @default.
- W134160483 hasRelatedWork W2626056102 @default.
- W134160483 hasRelatedWork W28290383 @default.
- W134160483 hasRelatedWork W2904175495 @default.
- W134160483 hasRelatedWork W315017070 @default.
- W134160483 hasRelatedWork W600737219 @default.
- W134160483 hasRelatedWork W78079707 @default.
- W134160483 hasRelatedWork W783059522 @default.
- W134160483 hasRelatedWork W823793070 @default.
- W134160483 hasVolume "1" @default.
- W134160483 isParatext "false" @default.
- W134160483 isRetracted "false" @default.
- W134160483 magId "134160483" @default.
- W134160483 workType "article" @default.