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

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.

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

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

  2. Littoral Sediment Budgets

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

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

  5. 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?

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

  7. Contribution from Sea Cliffs Lidar study by Young and Ashford, 2004 77,000 m3/yr from sea cliffs

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

  9. Setting

  10. Anchor River Mouth (source?) Sea Cliffs (source) K-Bay Submarine Trough (sink) Homer Littoral Cell (HLC) Lesser Streams (source?)

  11. Calculation of sea cliff retreat rate Qv = 4,400 – 6,300 m3/yr L = 30 km b = 10 m f = 0.15 Estimated contribution from Sea Cliffs = 100% ? R = 9 - 14 cm/yr

  12. Barrier Island sediment budgets Oregon inlet migration is 23 m/yr southward and 5 m/yr landward QLST = 500,000 - 1,000,000 m3/yr

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

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

  15. Paleo- vs. Modern sink behavior

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

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