TIME, SPACE, AND CAUSALITY IN GEOMORPHOLOGY

Autores

  • S. A SCHUMM U. S. Geological Survey, Denver, Colorado
  • R. W LICHTY U. S. Geological Survey, Denver, Colorado

Resumo

The distinction between cause and effect in the development of landforms is a function of time and space (area) because the
factors that determine the character of landforms can be either dependent or independent variables as the limits of time and
space change. During moderately long periods of time, for example, river channel morphology is dependent on the geologic
and climatic environment, but during a shorter span of time, channel morphology is an independent variable influencing the
hydraulics of the channel.
During a long period of time a drainage system or its components can be considered as an open system which is
progressively losing potential energy and mass (erosion cycle), but over shorter spans of time self-regulation is important,
and components of the system may be graded or in dynamic equilibrium. During an even shorter time span a steady state may
ex1st. Therefore, depending on the temporal and spacial dimensions of the system under consideration, landforms can be
considered as either a stage in a cycle of erosion or as a system in dynamic equilibrium.

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Publicado

2021-04-23

Como Citar

SCHUMM, S. A., & LICHTY, R. W. (2021). TIME, SPACE, AND CAUSALITY IN GEOMORPHOLOGY. William Morris Davis - Revista De Geomorfologia, 2(1), 1–9. Recuperado de //williammorrisdavis.uvanet.br/index.php/revistageomorfologia/article/view/111