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The deflection of the vertical in the Western and Central Mediterranean area

  • Notices Scientifiques
  • Published:
Bulletin Géodésique (1946-1975)

Abstract

The deflection of the vertical at 23 stations was determined by gravimetrical methods and compared to the difference of astronomic observations and geodetic values of the European adjustment.

The results show a fair agreement between the two independent sets of values, indicating that doubts about the relative reliability of submarine gravity observations are not justified. A systematic discrepancy in the meridian components of the deflection may reflect on theHayford ellipsoid as used in the European adjustment.

Zusammenfassung

Auf 23 Stationen wurde die Lotabweichung gravimetrisch bestimmt und den astro-geodätischen Werten der europäischen Ausgleichung gegenübergestellt.

Die beiden Ergebnisse stimmen sehr gut überein. Damit werden die Bedenken hinfällig, die sich gegen den Wert von Messungen in Unterseebooten richteten. Systematische Abweichungen in den meridionalen Komponenten beruhen möglicherweise auf der art der Anwendung des Hayfordschen Ellipsoids in der Ausgleichung des Zentraleuropäischen Netzes.

Resumen

La desviación de la vertical en 23 estaciones ha sido determinada por el método gravimétrico y compara con los resultados astrogeodéticos de la compensación europea.

Existe muy buen acuerdo entre los dos conjuntos de datos, que demuestra que las dudas emitidas en cuanto al valor de las observaciones en submarino son injustificadas. Una discordancia sistemática en las componentes meridianas podria ser debida al empleo del elipsoide deHayford en la compensación de la red europea.

Résumé

La déviation de la verticale en 23 stations a été déterminée par la méthode gravimétrique et comparée aux résultats astrogéodésiques de la compensation européenne.

Il y a très bon accord entre les 2 ensembles de données, ce qui montre que les doutes émis quant à la valeur des observations en sous-marins sont injustifiés. Une discordance systématique dans les composantes méridiennes pourrait être due à la façon dont on a employé l'ellipsoïde deHayford dans la compensation du réseau central européen.

Sommario

E'stata determinata col metodo gravimetrico la deviazione della verticale in 23 stazioni e comparata ai risultati astro-geodetici della compensazione europea.

Vi é molto buon accordo tra i due insiemi di dati, ciò che dimostra che i dubbi emessi circa il valore delle osservazioni in sottomarino sono ingiustificati. Una discordanza sistematica tra le componenti maridiane potrebbe essere dovuta all'impiego nella compensazione della rete central europea dell'ellisoide diHayford.

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References

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Authors and Affiliations

  1. Army Map Service, Washington, D.C.

    Irene Fischer

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  1. Irene Fischer
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Fischer, I. The deflection of the vertical in the Western and Central Mediterranean area. Bull. Geodesique 34, 343–353 (1954). https://doi.org/10.1007/BF02529948

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  • DOI: https://doi.org/10.1007/BF02529948

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