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• Breaker index - Defines the wave height at which waves start to break. The maximum wave height is defined by the breaker index times the local waterdepth. Value should be between 0.0001 and 1.
• Depth of closure - Maximum waterdepth at which waves still induce sediment transport. Beach volume changes are calculated up to this waterdepth. Value should be between 0.0001 and 30 m.
• Active height - Maximum height (on of the dry beach ) which can still be considered active by sediment transport gradients. Beach volume changes are calculated up to this active height. Value should be between 0.0001 and 40 m
• Water density - Value should be between 1000 kg/m³ (e.g. fresh water) and 1025 kg/m³ (e.g. salty water).

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