RUNNING — click to pause
TIDE AMPLITUDE
TIDE PERIOD (frames)
ASYMMETRY (M4)
NET TRANSPORT RATE
CHANNEL WIDTH
CHANNEL BED ELEV
STRUCTURES — off
CHANNEL END — dead-end
EDGE — vegetated edge
MORPHOLOGY — on
FLOW — on
SPOT ELEVATIONS — on
RESET BED + SEDIMENT
NOTES · DIMENSIONLESS
A sketching instrument, not a calibrated hydrodynamic model — values are abstract, not meters or hours.
Bed elevations: channel ≈ 40, marsh ≈ 130 (lower = deeper)
Flow: pixels per frame (~5 peak in the channel)
Tide: one cycle = 360 frames = one full flood + ebb
Asymmetry (M4): quarter-diurnal harmonic, 2× the tide frequency — drives net transport
Morphology: deposition/erosion, ramp saturates at ±60
TIDE
accretion
+60 erosion
−60
flow
sediment
spot elev.
+12
drag dredge · shift+drag fill
|
sea ← inlet · land → right
STRUCTURE
×
MATERIAL — hardened wall
HEIGHT
30