Accession Number:

AD0770638

Title:

Tidal Currents, Sediment Transport, and Sand Banks in Chesapeake Bay Entrance, Virginia.

Descriptive Note:

Technical rept.,

Corporate Author:

OLD DOMINION UNIV NORFOLK VA INST OF OCEANOGRAPHY

Personal Author(s):

• Ludwick,John C.

Report Date:

1973-11-15

Pagination or Media Count:

29.0

Abstract:

Taking the mean over all stations in the entrance area, and with reference only to a level 100 cm above the bed, tidal currents at ebb and flood strength are nearly equal in speed and average 42 cmsec. Taking different individual stations, ebb maximum is 79 cmsec flood maximum is 66 cmsec however, at more than half the observation stations, maximum flood speed and duration exceed maximum ebb speed and duration. In Chesapeake Bay entrance, a wide entrance of moderate tidal range, net sediment transport at the headlands is directed seaward. Individual shoals within the entrance are bounded on one side by a net sediment transport to seaward and on the other side by a net sediment transport to landward. Ebb deltas and flood deltas occur in alternate succession across the entrance with 4 to 5 of the former and 3 to 4 of the latter. There is also an interior flood delta found where ebb-directed sediment is interdicted and swept landwards in a flood-dominated channel. Modified author abstract

Descriptors:

• *Ocean currents
• *Sediment transport
• *Tides
• Shallow water
• Shores
• Deltas
• Chesapeake Bay

Subject Categories:

• Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE