1936-48: Member of the Executive Committee of the International Seismological Association.
1938: Tagea Brandt Award.
1951-54; 57-60: Member of the Executive Committee of the International Association of Seismology and Physics of the Earth's Interior.
1957: Associate Royal Astronomical Society, London.
1959: Honorary Fellow Royal Society, Edinburgh.
1960: The Harry Oscar Wood Award in Seismology.
1963-67: Vice-President of the Executive Committee of the International Association of Seismology and Physics of the Earth's Interior.
1964: Doctor of Science (Sc.D.) h.c. Columbia University in the City of New York.
1964: Deutsche Geophysikalische Gesellschaft, Emi-Wiechert Medal.
1965: Kgl. Danske Videnskabernes Selskab (Royal Danish Academy of Sciences and Letters) Gold Medal.
1967: Tagea Brandt Award.
1968: Doctor of Philosophy (Dr.phil.) h.c. University of Copenhagen.
1969: Foreign Member Royal Society, London.
1977: Medal of the Seismological Society of America.
