Matti Kullervo Seppälä (5 September 1941 in Vaasa – 24 November 2020 in Hämeenlinna[1]) was a Finnish geomorphologist specialized in cold climate aeolian processes.
[3] Seppälä got a one-year Humboldt grant by the German Research Foundation as guest professor at the Heidelberg University in 1977/78.
Seppälä was the national representative for Finnland in the International Permafrost Association for almost 20 years.
Palsas as permafrost phenomena were generally known in northern Finland and Sweden since the beginning of the 20th century.
[5][6][7][8][9][10] He was also the first Scandinavian geomorphologist initiating permafrost research in the mountains of northern Finland in the year 1985, together with German colleagues.