Linear Sandbanks (Broad Fourteens) in the southern North Sea Data Set (1991)
Data set information
| Query EDMED |
| General | |
| Data holding centre | Proudman Oceanographic Laboratory |
| Country | United Kingdom  |
| Time period | From 04 to 19 December 1991 |
| Ongoing | No |
| Geographical area | Sandwave area 40km off Dutch coast - Broad Fourteens, Southern North Sea |
| Observations | |
| Parameters | Air pressure; Electrical conductivity of the water column; Wind strength and direction; Vertical velocity of the water column (currents); Sedimentation flux quantification in the water column; Salinity of the water column; Horizontal velocity of the water column (currents); Temperature of the water column; Concentration of suspended particulate material in the water column; Spectral wave data parameters; Turbulence in the water column; Transport in the water column; Bathymetry and Elevation |
| Instruments | Anemometers; current meters; radar altimeters; sediment traps; sediment grabs; CTD; current profilers; sidescan sonars; single-beam echosounders; sediment settling tubes; wave recorders |
| Description | |
| Summary | The Broad Fourteens study area, characterised by large tidal currents, moderate wave activity and regular, well developed sandwaves, is located approximately 40km off the Dutch coastline. Data were collected on RRS Challenger cruise 87, which had the following objectives: measurement of near- bed turbulence; vertical current structure; waves (especially directional spectra) and currents at two sites separated by 10km; determination of wave and current dissipation; measurement of suspended sediments; measurements of bedload transport; study of turbulent bursting events; observation of the response of bedforms to bottom stress and determination of drag partitioning over bedforms. The data collected in support of this include 10 moorings each deployed for 7 days at two sites separated by 10km and aligned with the average tidal flow directions. Moorings included STABLE, bottom mounted ADCP, current meters, waverider buoys. Fluorescent sand was released during a tracer experiment and grab samples of sand obtained subsequently. Wave data were also obtained using the secondary navigation on RRS Challenger. Meteorological data were also collected. CTD profiles were taken hourly over a 13 hour period. A side-scan sonar and echo-sounding survey was carried out. |
| Originators | Proudman Oceanographic Laboratory |
| Availability | |
| Organisation | Proudman Oceanographic Laboratory |
| Availability | By negotiation |
| Contact | The Director |
| Address | Proudman Oceanographic Laboratory |
| Telephone | +44 151 795 4800 |
| Administration | |
| Collating centre | British Oceanographic Data Centre |
| Local identifier | 1054008 |
| Global identifier | 745 |
| Last revised | 2009-10-19 |
