FS
fluvial systems
fluvial systems
Kartei Details
| Karten | 88 |
|---|---|
| Sprache | Deutsch |
| Kategorie | Naturkunde |
| Stufe | Grundschule |
| Erstellt / Aktualisiert | 27.01.2014 / 18.01.2020 |
| Lizenzierung | Kein Urheberrechtsschutz (CC0) |
| Weblink |
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what is a fluvial system?
biotic/abiotic -> interact on different scales in space + time
driven by water + sediment
sensitivity to disturbance is low on basin scale, high on habitat scale
structure: long, lat, verical & time
production, transfer & deposition zone
upstream/ downstream controlled
very dynamic
basin + floodplain scale = not manageable
name the 6 geomorph concepts of landscape change
uniformity
threaholds
landscape evolution
complexity
self organized criticality SOC
optimality
uniformity concept
process laws remain the same for past, present and future
narure of processes does not change, frequency distr does not change
threshold concept
system only responds when treshold is exceeded
external or internal thresholds
examples of internal thresholds
critical slope
meander cutoff
concept of landscape evolution
uplift and erosion form landscape
river is in equilibrium of transport cap and sediment supply
after disturbance: re-establishing of equilibrium
two models: progressive change, episodic change
concept of landscape evolution
uplift and erosion form landscape
river is in equilibrium of transport cap and sediment supply
after disturbance: re-establishing of equilibrium
two models: progressive change, episodic change
important factors for landscape evolution concept
rates of U(t) and e(t)
their temp variability
intermitency (periodizität)
prob dist of large events
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