Comptes Rendus
Novaya Zemlya effect and Fata Morgana. Raytracing in a spherically non-symmetric atmosphere
Comptes Rendus. Physique, Volume 23 (2022) no. S1, pp. 365-389.

Raytracing in a non-symmetric atmosphere is discussed and illustrated by new simulations of both historical and mythical observations, such as the Novaya Zemlya phenomenon seen by the Dutch in 1597 and Nansen’s sighting of it in 1894. An alternative interpretation is given of the mythical hafstramb monster in the Greenland Sea. Recent photographic material that shows mirages of the water surface is analyzed and a simulation presented. Raytracing techniques are reviewed and it is shown that numerical integration by distance is much preferred over other choices of the integration parameter.

Le tracé de rayons dans une atmosphère non-symétrique est discuté et illustré par de nouvelles simulations numériques d’observations, historiques et mythiques, tel le phénomène de la Nouvelle-Zemble observé par le Hollandais en 1597 et rapporté par Nansen en 1894. Une interprétation nouvelle est donnée du monstre mythique halfstramb dans la mer du Groenland. Des documents photographiques récents, montrant des mirages de la surface de l’eau, sont analysés et leur simulation présentée. Les techniques de tracé de rayons sont revues et il est montré qu’une intégration numérique sur la distance est bien préférable à d’autres choix du paramètre d’intégration.

Online First:
Published online:
DOI: 10.5802/crphys.102
Keywords: Raytracing, Simulations, Mirages, Novaya Zemlya phenomenon, Fata Morgana
Mot clés : Tracé de rayons, Simulations, Mirages, Phénomène de la Nouvelle-Zemble, Fata Morgana
Siebren van der Werf 1

1 University of Groningen (Retired), Groningen, Netherlands
License: CC-BY 4.0
Copyrights: The authors retain unrestricted copyrights and publishing rights
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Siebren van der Werf. Novaya Zemlya effect and Fata Morgana. Raytracing in a spherically non-symmetric atmosphere. Comptes Rendus. Physique, Volume 23 (2022) no. S1, pp. 365-389. doi : 10.5802/crphys.102. https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.102/

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