Filip Hjulström
Encyclopedia
Henning Filip Hjulström was a Swedish
geographer
. Hjulström was professor of geography
at Uppsala University
from 1944, and in 1949, when the subject of geography was split, he became professor of Physical Geography
.
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
), fluvial transport (Åke Sundborg), delta deposition (Valter Axelsson), and coastal processes (John O Norrman). This developed into "the Uppsala School of Physical Geography
".
Hjulström is most known for creating the Hjulström curve
, which describes the thresholds for erosion
and deposition
of particles in running water.
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....
geographer
Geographer
A geographer is a scholar whose area of study is geography, the study of Earth's natural environment and human society.Although geographers are historically known as people who make maps, map making is actually the field of study of cartography, a subset of geography...
. Hjulström was professor of geography
Geography
Geography is the science that studies the lands, features, inhabitants, and phenomena of Earth. A literal translation would be "to describe or write about the Earth". The first person to use the word "geography" was Eratosthenes...
at Uppsala University
Uppsala University
Uppsala University is a research university in Uppsala, Sweden, and is the oldest university in Scandinavia, founded in 1477. It consistently ranks among the best universities in Northern Europe in international rankings and is generally considered one of the most prestigious institutions of...
from 1944, and in 1949, when the subject of geography was split, he became professor of Physical Geography
Physical geography
Physical geography is one of the two major subfields of geography. Physical geography is that branch of natural science which deals with the study of processes and patterns in the natural environment like the atmosphere, biosphere and geosphere, as opposed to the cultural or built environment, the...
.
Filip Hjulström's doctoral thesis, "The River Fyris,", contained one of the first quantitative studies of geomorphological processes
Geomorphology
Geomorphology is the scientific study of landforms and the processes that shape them...
ever published. It was a study of sediment transport
Sediment transport
Sediment transport is the movement of solid particles , typically due to a combination of the force of gravity acting on the sediment, and/or the movement of the fluid in which the sediment is entrained...
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
Anders Rapp was a Swedish geomorphologist and geographer who first made a comprehensive study on avalanche boulder tongues. Most of Rapp's works were made in the Scandinavian mountains and Spitsbergen including the areas of Kärkevagge near Abisko and Kebnekaise.Studying under Filip Hjulström, Rapp...
), fluvial transport (Åke Sundborg), delta deposition (Valter Axelsson), and coastal processes (John O Norrman). This developed into "the Uppsala School of Physical Geography
Physical geography
Physical geography is one of the two major subfields of geography. Physical geography is that branch of natural science which deals with the study of processes and patterns in the natural environment like the atmosphere, biosphere and geosphere, as opposed to the cultural or built environment, the...
".
Hjulström is most known for creating the Hjulström curve
Hjulstrom curve
The Hjulström curve, named after Filip Hjulström , is a graph used by hydrologists to determine whether a river will erode, transport, or deposit sediment. It was originally published in his doctoral thesis "The River Fyris" in ?...
, which describes the thresholds for erosion
Erosion
Erosion is when materials are removed from the surface and changed into something else. It only works by hydraulic actions and transport of solids in the natural environment, and leads to the deposition of these materials elsewhere...
and deposition
Sedimentation
Sedimentation is the tendency for particles in suspension to settle out of the fluid in which they are entrained, and come to rest against a barrier. This is due to their motion through the fluid in response to the forces acting on them: these forces can be due to gravity, centrifugal acceleration...
of particles in running water.
External links
- Filip Hjulström (Swedish)