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Woods Hole , Aug 28 2014, COAWST training

FROM SEA WAVES TO MUD WAVES. modeling wave-ocean processes , dense water dynamics , sediment transport and continental margin reshaping in the Adriatic Sea. D. Bonaldo. Contributions from A. Benetazzo , A. Bergamasco, S. Carniel , F.M. Falcieri , M. Sclavo , F. Trincardi.

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Woods Hole , Aug 28 2014, COAWST training

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  1. FROM SEA WAVES TO MUD WAVES modelingwave-oceanprocesses, dense water dynamics, sedimenttransport and continentalmarginreshaping in the AdriaticSea D. Bonaldo ContributionsfromA. Benetazzo, A. Bergamasco, S. Carniel, F.M. Falcieri, M. Sclavo, F. Trincardi Woods Hole, Aug 28 2014, COAWST training

  2. COAWST Training Woods Hole, Aug 28 ,2014 DENSE WATER IN THE ADRIATIC SEA Model generation, propagation and cascadingofDW in Winter 2012 Identify dense water and sedimentpathways Assess the roleofdifferent forcing factors in controlling mass transport ExplainBedformpatchyness in the SouthernAdriaticMargin (SAM)

  3. COAWST Training Woods Hole, Aug 28 ,2014 MODEL SET UP Dx=1 km 272 X 752 X 30 cells Vtransform= 2 Vstretching= 4 THETA_S = 1 THETA_B = 3.0 TCLINE = 1.9 8 Tidalcomponents M2, S2, N2, K2, O1, K1, P1, Q1 20 River mouths 18 (W) + 2 (E) 8 non-cohesiveSedimentclasses (4 grainsizes) Seabed: 15, 63, 125, 225 mm Alpine, Apennine: 15, 63 mm UncoupledROMS VS Samegrid, 36 directions, 40 intrinsicfrequencies 2 Way CoupledROMS+SWAN

  4. COAWST Training Woods Hole, Aug 28 ,2014 MODEL SET UP BC (Otranto Strait): MediterraneanForecasting System (MFS) 1/16° x 1/16° hor. resolution Radiation-Nudging 3-D momentum and tracersfluxes Chapman Free-surface and tangentialcomponentof the barotropicvelocity Flather  Normalcomponentof the barotropicvelocity IC (Nov 1, 2011), Hydrodynamics: AdriaticSea op. ROMS, 2x2 km hor. res. Bot. Sediment: Harris et al., 2008; Sclavoet al., 2013 Atmospheric forcing: COSMO-I7, 7x7 km hor. res., 35 sigma levels Coupling: #defineWEC_VF #defineWDISS_WAVEMOD #defineUV_KIRBY #define COARE_TAYLOR_YELLAND #defineZOS_HSIG #defineTKE_WAVEDISS #defineBEDLOAD_SOULSBY

  5. COAWST Training Woods Hole, Aug 28 ,2014 COUPLING AND SURFACE DYNAMICS CTRS UTRS Effectsofcoupling on surfacecirculation… • Bottom stress, sedimentresuspension • Tracersadvection and patterns • Momentumofoutflowing DW • Warm and salty water intrusion UV … and enhancedair-seaheatfluxes SST • Physicalpropertiesof dense waters • Overall dense water production

  6. COAWST Training Woods Hole, Aug 28 ,2014 MASS FLUXES IN THE SOUTHERN ADRIATIC SEA

  7. COAWST Training Woods Hole, Aug 28 ,2014 MASS FLUXES IN THE SOUTHERN ADRIATIC SEA Sediment-induced density  along-shelfDW pathway

  8. COAWST Training Woods Hole, Aug 28 ,2014 MASS FLUXES IN THE SOUTHERN ADRIATIC SEA Sediment-induced density  Along-shelfDW pathway Waveseffect on DW  Produced volume  DW trajectory

  9. COAWST Training Woods Hole, Aug 28 ,2014 MASS FLUXES IN THE SOUTHERN ADRIATIC SEA Sediment-induced density  Along-shelfDW pathway Waveseffect on DW  Produced volume  DW trajectory Waveseffect on sed. transport Total sediment volume  Sedimenttrajectory

  10. COAWST Training Woods Hole, Aug 28 ,2014 HYDRODYNAMIC REGIME AND BEDFORM PATCHYNESS Perturbationstogeostrophicequilibrium are controlledbyvariations in seabed curvature and slope Cascading-relatedacceleration and decelerationpatterns are compatiblewitherosional and depositionalbedformconfiguration

  11. COAWST Training Woods Hole, Aug 28 ,2014 OUR COMMENTS (whataboutyours?) DENSE WATER DYNAMICS SHOW DIVERSE RESPONSE TO VARIABLE FORCING FACTORS CENTRAL ROLE OF WAVES AND TOPOGRAPHY GREAT EXPECTATIONS ON NESTING ON KEY MORPHOLOGICAL FEATURES… …AND ON COHESIVE/MIXED SEDIMENT FORMULATION!

  12. THANK YOU FOR YOUR ATTENTION davide.bonaldo@ve.ismar.cnr.it

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