Predicting the Fate of Artefacts in Energetic, Shallow Marine Environments: an Approach to Site Management

A poor understanding of the physical environment often hinders management of marine artefacts. A study was conducted of an early‐18th‐century shipwreck to test whether the wreckage could have settled through ∼3.5 m of substrate. Results indicate that the wreck could have settled via episodic scour processes driven by storms and tidal inlet migration. A numerical model, modified to include characteristics of the underlying geology, predicts continued scour under moderate waves. Scour processes appear to have been interrupted by an erosion‐resistant underlying layer, so that the wreck now remains exposed, subject to degradation. A generalized approach to predict burial or exposure of other shallow‐water artefacts is developed. © 2006 The Authors

[1]  H. V. Tilburg,et al.  Maritime archaeology : a reader of substantive and theoretical contributions , 1998 .

[2]  B. Sumer,et al.  The mechanics of scour in the marine environment , 2002 .

[3]  Robert G. Dean,et al.  Water wave mechanics for engineers and scientists , 1983 .

[4]  P. Larcombe,et al.  Sedimentary Processes and the Pandora Wreck, Great Barrier Reef, Australia , 1999 .

[5]  James A. Bailard,et al.  An energetics total load sediment transport model for a plane sloping beach , 1981 .

[6]  R. Soulsby.  Dynamics of marine sands : a manual for practical applications , 1997 .

[7]  Edward B. Thornton,et al.  Bar/trough generation on a natural beach , 1996 .

[8]  S. Heron,et al.  The Outer Banks of North Carolina , 1994 .

[9]  M. Hayes.  General morphology and sediment patterns in tidal inlets , 1980 .

[10]  A E DeWall.  An Investigation of Scour Protection for Small Footings in the Nearshore Zone. , 1983 .

[11]  Justin K. Dix,et al.  The Mary Rose site–geophysical evidence for palaeo‐scour marks , 1997 .

[12]  Steve Elgar,et al.  Observations of sand bar evolution on a natural beach , 1998 .

[13]  Rory Quinn,et al.  Integrated Geophysical Surveys of The French Frigate La Surveillante (1797), Bantry Bay, Co. Cork, Ireland , 2002 .

[14]  A. Hine,et al.  Tidal Inlet Variability — Cape Hatteras to Cape Canaveral , 1977 .

[15]  Å. Sundborg.  The River Klarälven a Study of Fluvial Processes , 1956 .

[16]  Martin C. Miller,et al.  Threshold of sediment motion under unidirectional currents , 1977 .

[17]  Richard Whitehouse,et al.  Scour at Marine Structures: A Manual for Practical Applications , 1998 .

[18]  P. Elmore,et al.  Predicting Seabed Burial of Cylinders by Wave-Induced Scour: Application to the Sandy Inner Shelf Off Florida and Massachusetts , 2007, IEEE Journal of Oceanic Engineering.

[19]  David G. Aubrey,et al.  Hydrodynamics and Sediment Dynamics of Tidal Inlets , 1988, Lecture Notes on Coastal and Estuarine Studies.

[20]  W. McGillis,et al.  The Martha ’ s Vineyard Coastal Observatory , 2022 .

[21]  Ingrid Ward,et al.  A New Process-based Model for Wreck Site Formation , 1999 .