Arthur Newell Strahler (February 20, 1918 – December 6, 2002) was a geoscience professor at

Columbia University Columbia University (also known as Columbia, and officially as Columbia University in the City of New York) is a private research university in New York City. Established in 1754 as King's College on the grounds of Trinity Church in Manhatt ...

who in 1952 developed the

Strahler Stream Order In mathematics, the Strahler number or Horton–Strahler number of a mathematical tree is a numerical measure of its branching complexity. These numbers were first developed in hydrology by and ; in this application, they are referred to as t ...

system for classifying streams according to the power of their tributaries. Strahler was largely responsible for the shift from qualitative to quantitative

geomorphology Geomorphology (from Ancient Greek: , ', "earth"; , ', "form"; and , ', "study") is the scientific study of the origin and evolution of topographic and bathymetric features created by physical, chemical or biological processes operating at or ...

during the mid 20th century.

Significant works

*Strahler, A. N. (1952). "Dynamic basis of geomorphology". ''Geological Society of America Bulletin'' 63: 923–938. *Strahler, A. N. (1952). "Hypsometric (Area-Altitude) analysis of erosional topography". ''Geological Society of America Bulletin'' 63: 1117–1142. *Strahler, A. N. (1957). "Quantitative analysis of watershed geomorphology". ''Eos, Transactions American Geophysical Union'', ''38''(6), 913–920. *Strahler, A. N. (1980). "Systems theory in physical geography". ''Physical Geography'' 1: 1–27. *Strahler, A. N. (1992). "Quantitative/dynamic geomorphology at Columbia 1945-60: a retrospective". ''Progress in Physical Geography'' 16: 65–84.

Books

*Strahler, A. N. (1951). ''Physical geography''. New York: Harper & Row. *Strahler, A. N. (1960). ''Objective and Quantitative Field methods of terrain analysis''. New York: Harper & Row. *Strahler, A. N. (1963). ''Earth sciences''. New York: Harper & Row. *Strahler, A. N. (1965). ''Introduction to physical geography''. New York: Harper & Row. *Strahler, A. N. (1966). ''A geologist's view of Cape Cod''. Natural History Press. *Strahler, A. N. (1971). ''Earth sciences''. New York: Harper & Row. *Strahler, A. N. (1972). ''Planet Earth: its physical systems through geologic time''. New York: Harper & Row. *Strahler, A. N. (1973). ''Introduction of physical geography''. New York: John Wiley. *Strahler, A. N. (1974). ''Introduction to environmental science''. New York: John Wiley. *Strahler, A. N. (1976). ''Elements of physical geography''. New York: John Wiley. *Strahler, A. N. (1978). ''Modern physical geography''. New York: John Wiley. *Strahler, A. N. (1987). ''Science and Earth History: The Evolution/Creation Controversy''. New York: John Wiley. *Strahler, A. N. (1990). ''Plate tectonics''. New York: John Wiley.

References

Texas A&M University Biography
{{DEFAULTSORT:Strahler, Arthur Newell 20th-century American geologists American geographers American hydrologists 1918 births 2002 deaths 20th-century geographers