One more concept from Airy Wave Theory Wave

One more concept from Airy Wave Theory … Wave Period Does Not Change!

Littoral Sediment Budgets

Contributions from Riverine Sources Best and Griggs (1991) - Santa Cruz Littoral Cell Map and Budget

Total and Littoral Suspended Load used these rating curves along with probabilities of discharge events to estimate riverine contribution.

Bed Load and Discharge so. . . just determine combine the rating curves with frequency of event to get mean annual contribution from streams/rivers, right? What’s the assumption?

Contribution from Sea Cliffs 18 -20% is the estimate from Best and Griggs (1991)

Contribution from Sea Cliffs Lidar study by Young and Ashford, 2004 77, 000 m 3/yr from sea cliffs

Kujykuri Beach, Japan (Sunamura and Horikawa, 1977) work through the budget - does it work?

Setting

Homer Littoral Cell (HLC) Anchor River Mouth (source? ) Se a. C liff s( so urc Lesser Streams (source? ) K-Bay Submarine Trough (sink) e)

Calculation of sea cliff retreat rate Qv = 4, 400 – 6, 300 m 3/yr L = 30 km b = 10 m f = 0. 15 Estimated contribution from Sea Cliffs = 100% ? R = 9 - 14 cm/yr

Barrier Island sediment budgets Oregon inlet migration is 23 m/yr southward and 5 m/yr landward QLST = 500, 000 - 1, 000 m 3/yr

Littoral Cells coasts divided up into a series of compartments Inman and Chamberlain, 1960

Lowstand (and Highstand) fan deposition The sinks of the system - turbidite fans Story of their activity is widely debated. Covault et al. , 2007

Paleo- vs. Modern sink behavior

Subcells - Bowen and Inman (1966) Identified offshore sources?