Movie:Delta lab experiment

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Information Page: Delta lab experiment

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Lab experiment of growing delta with all external controls kept constant.



Key Attributes

Domain: coastal, marine
Keywords: Laboratory experiments
Model name: Animation model name
Name: Erica, Powell
Where: Nagasaki University, Japan
When: 3:00 min


Short Description

Grade level: Middle (6-8), High (9-12), Under graduate (13-16), Graduate / Professional

Statement: Autogenic Storage and Release

Abstract: This movie shows an experimental delta built into standing water (constant depth of 3 cm). All external controls are constant (sediment flux, water discharge, base level changes). Fluvial system alternates between sediment release (channelization) and sediment storage (sheet flow).

Theory

Fluvial system alternates between sediment storage and release due to autogenic slope fluctuations on the deltaic surface. Shoreline progradation rates increase during release events and slow during sediment storage. This process is entirely autogenic (internally generated, i.e., no external controls were changing to induce this process).

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