Henning Filip Hjulström (6 October 1902 – 26 March 1982) was a

Swedish Swedish or ' may refer to: Anything from or related to Sweden, a country in Northern Europe. Or, specifically: * Swedish language, a North Germanic language spoken primarily in Sweden and Finland ** Swedish alphabet, the official alphabet used by ...

geographer A geographer is a physical scientist, social scientist or humanist whose area of study is geography, the study of Earth's natural environment and human society, including how society and nature interacts. The Greek prefix "geo" means "earth" a ...

. Hjulström was professor of

geography Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, an ...

Uppsala University Uppsala University ( sv, Uppsala universitet) is a public research university in Uppsala, Sweden. Founded in 1477, it is the oldest university in Sweden and the Nordic countries still in operation. The university rose to significance during ...

from 1944, and in 1949, when the subject of geography was split, he became professor of

Physical Geography Physical geography (also known as physiography) is one of the three main branches of geography. Physical geography is the branch of natural science which deals with the processes and patterns in the natural environment such as the atmosphere, ...

. Filip Hjulström's doctoral thesis, "The River Fyris", contained one of the first quantitative studies of geomorphological processes ever published. It was a study of sediment transport and soil erosion in the drainage area of the river Fyrisån, based on a daily water sample that he took as he passed on the way to the department, and analyzed for suspended sediment content. His students followed in the same vein, making quantitative studies of mass transport (

Anders Rapp Anders Rapp (1927–1998) was a Swedish geomorphologist and geographer who pioneered quantitative geomorphological approach on mass movements and erosion. He was the first to make a comprehensive study on avalanche boulder tongues. Most of Rapp' ...

), fluvial transport (

Åke Sundborg Åke Sundborg (15 October 1921 – 23 May 2007) was a Swedish geographer and geomorphologist known for his contributions to the hydrology and geomorphological dynamics of rivers. He was active at Uppsala University where he studied under the s ...

), delta deposition ( Valter Axelsson), and coastal processes ( John O. Norrman). This developed into "the Uppsala School of

". Hjulström is most known for creating the

Hjulström curve The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment. It was originally published in his doctoral thesis "Studies ...

, which describes the thresholds for

erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is dis ...

and deposition of particles in running water.Hjulström's Diagram

Idaho State University , mottoeng = "The truth will set you free" , established = , former_names = Academy of Idaho(1901–1915)Idaho Technical Institute(1915–1927) University of Idaho—Southern Branch(1927–1947)Idaho Stat ...

Family

Hjulström's son

Lennart Hjulström Lennart Hjalmar Hjulström (18 July 1938 – 3 July 2022) was a Swedish actor and director. He was married to Gunilla Nyroos and father of Niklas and Carin Hjulström. His father was Filip Hjulström. Partial filmography *1983: '' Berget på ...

went on to become a notable Swedish actor that had two children with Ulla (née Söderdal),

Niklas Hjulström Niklas Hjulström (born 15 February 1962) is a Swedish actor, singer and director. He is brother to Carin Hjulström, grandson to Filip Hjulström and son to Lennart Hjulström. Hjulström was born in Mölndal, Sweden, and finished his educ ...

and Carin Hjulström, also actors. Lennart also had a child, Hannah Nyroos with his current wife, Gunilla Nyroos, an actress.

References

External links

Filip Hjulström
(Swedish) Swedish geographers 1902 births 1982 deaths Process geomorphologists Academic staff of Uppsala University Swedish geomorphologists Swedish hydrologists Sedimentologists 20th-century geographers Members of the Royal Swedish Academy of Sciences {{geographer-stub