Norges Tekniske Vitenskapsakademi, NTVA, og Norges Vitenskapsakademi for Polarforskning, NVP, inviterer til fellesmøte i Bergen i anledning 150-års jubileum for Fridtjof Nansen og 25-års jubileum for Nansensenteret.

Tema: Nansen og Johannessen i isen i Arktis

Program:

Eventyrlyst – a sense of adventure
Et bildespill om Fridtjof Nansens liv og virke.

Fridtjof Nansens bidrag til moderne oseanografi
Foredrag av Professor Ola M Johannessen, Nansen senter for miljø og fjernmåling

Tirsdag 24. januar 2012 kl. 19:00

Sted: Nansensenteret på Marineholmen, Thormøhlens gate 47

Møtet er åpent for alle interesserte.

Påmelding til admin@nesrc.no eller 55205800 innen 19. januar er bare nødvendig for de som vil delta på måltidet etter møtet.

Fridtjof Nansens contribution to modern Oceanography by Ola M. Johannessen

Fridtjof Nansens 3 year expedition with Fram to the Arctic ocean 1893 - 1896 laid the foundation for modern physical oceanography. He observed that the ice drifted to the right of the wind direction and interpreted that this was caused by the earth rotation. This result pioneered the wind driven circulation of the world oceans and was expanded by Ekman, Sverdrup, Munk and others.

On the Fram expedition he also observed to his surprise that the Arctic ocean was deep up to 4000 m and that the warm-saline Atlantic water penetrated the Arctic ocean at subsurface level and also that internal waves were present at the so called dead water.

Later Nansen carried out fundamental process studies in the Norwegian Sea together with Helland-Hansen and they were the first to formulate and observe the deep water formation and the existence of mesoscale eddies - the weather in the ocean.

In conclusion Nansen made fundamental contribution to the modern oceanography such as wind driven ocean circulation - deep water formation, internal waves and mesoscale eddy circulation - important topics of continuing studies of today - important for future climate.