Class 25: Hydrology. Class updates:  Reading: Section 11.1-11.5 Today’s topics:  Water on Earth  Water transport  Water and geology Class 25: Hydrology.

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Presentation transcript:

Class 25: Hydrology

Class updates:  Reading: Section Today’s topics:  Water on Earth  Water transport  Water and geology Class 25: Hydrology

Water where?

Hydrologic (aka water) cycle

Evaporation & transpiration

Condensation

Precipitation

Transport to ocean

Slow Transport

Fast transport: River Drainage Basin

Drainage basin II

River runoff

Erosion & Base Level

River Valley Development

River Erosion (denundation) Challenge question: Why so high in N India? Think of sediment source

Velocity Profile Flow velocity in channel depends on friction:  bottom and sides  friction due to boulders, gravel, vegetation  water flows - middle of the channel - near the surface

River Types - braiding

River Types - meanders

Meanders II

Sediment Transport

Floods I

Floods II

Features: Stream Patterns Regular Guided by cracksGuided by layers Guided by elevationGuided by depressions

Features: Alluvial Fans

Features: River Terraces

Features: River Deltas

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