A multiresolution index of valley bottom flatness for mapping depositional areas

John C. Gallant; Trevor I. Dowling

doi:10.1029/2002wr001426

journal article Open Access Dec 01, 2003

A multiresolution index of valley bottom flatness for mapping depositional areas

John C. Gallant Trevor I. Dowling

Water Resources Research Vol. 39 No. 12 · American Geophysical Union (AGU)

View at Publisher Save 10.1029/2002wr001426

Abstract

Valley bottoms function as hydrological buffers that significantly affect runoff behavior. Distinguishing valley bottoms from hillslopes is an important first step in identifying and characterizing sediment deposits for hydrologic and geomorphic purposes. Valley bottoms occur at a range of scales from a few meters to hundreds of kilometers in extent. This paper describes an algorithm for using digital elevation models to identify valley bottoms based on their topographic signature as flat low‐lying areas. The algorithm operates at a range of scales and combines the results at different scales into a single multiresolution index. This index classifies degrees of valley bottom flatness, which may be related to depth of deposit. The index can also be used to identify groundwater constrictions and to delineate hydrologic and geomorphic units.

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References

Details

Published: Dec 01, 2003
Vol/Issue: 39(12)
License: View

Authors

J

John C. Gallant

CSIRO Land and Water Canberra, ACT Australia

T

Trevor I. Dowling

CSIRO Land and Water Canberra, ACT Australia

Cite This Article

John C. Gallant, Trevor I. Dowling (2003). A multiresolution index of valley bottom flatness for mapping depositional areas. Water Resources Research, 39(12). https://doi.org/10.1029/2002wr001426

A multiresolution index of valley bottom flatness for mapping depositional areas

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