Document Type



Virginia Institute of Marine Science

Publication Date



Data report (Virginia Institute of Marine Science) ; no. 42.


The Virginia Institute of Marine Science, in cooperation with the Virginia Department of Conservation and Recreation, Division of Soil and Water Conservation, has identified as one of its major goals the systematic study of hydrodynamic processes that affect recreational, shoreline and benthic resources in the coastal zone of the Commonwealth. In pursuit of that goal, a long-term study of the wave climate in the Virginia portion of Chesapeake Bay was initiated in 1988 with support from the National Oceanographic and Atmospheric Administration through the Coastal Zone Management Program administered by the Virginia Council on the Environment (Grant No. NA89AA-D-CZ134).


For the period November 6, 1989 through August 2, 1990, a bottom-mounted wave gage was maintained at latitude 37° 24.S'N, longitude 76° 11.S'W at a mean depth of approximately 6.5 meters (21 feet) below mean sea level. Wave data were sensed and recorded by a Sea Data Model 635-9RS directional wave gage with Paroscientific high-precision quartz pressure transducer, Digicourse internal compass, and Marsh-McBirney remote 2-axis electromagnetic flow sensor with 4-cm diameter sphere. The flow sensor was co-located with (20 cm below) the pressure (P) sensor and oriented to obtain measures of the horizontal flow (UV) components at a height of 1. 5 meters above the bottom. All components of the wave gage were attached to an aluminum tetrapod which was retrieved and re-deployed at monthly intervals using an acoustic recall system to permit data recovery and servicing. Divers inspected the tetrapod as deployed and verified proper orientation on the rippled, coarse sand bottom of the location.



Water waves -- Chesapeake Bay (Md. and Va.)

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