Description: Data sets contain vertical profiles of current velocity measured by upward-looking Nortek AquaPro Acoustic Doppler Current Profilers (ADCP) deployed at two stations, an oyster bank (6.899° lng/ 53.546° lat, -32cm N.N) and a sand bank (6.898° lng/ 53.545° lat, -78cm N.N.), at Randzel 1 oyster reef in the Wadden Sea. Oyster bank station was located at the western edge of oyster reef, while sand bank station was positioned approximately 80 m to the southwest on a sandy seabed for comparison. Instruments were deployed near the seabed and operated in burst mode, consisting of 3-minute measurement intervals followed by 12-minute pauses. Two sampling configurations were applied: (1) April to May 2023: Oysterbank 1 (6.899° lng/ 53.546° lat, -32cm N.N) and April to May 2023: Sandbank 1 (6.898° lng/ 53.545° lat, -78cm N.N.) were recorded at 1 Hz with a vertical bin size of approximately 0.02 m. (2) After 14 May 2023 (Oysterbank 2 and Sandbank 2), sampling frequency was increased to 4 Hz, resulting in a vertical bin size of approximately 0.08 m. Raw ADCP data were processed using Nortek software and MATLAB routines. Processing included conversion of acoustic backscatter signals into orthogonal velocity components (u, v, w). Data with signal correlation values below 40 were excluded. Raw velocity components (u, v, w) were averaged over 60-second intervals, resulting in a temporal resolution of 1 minute. The vertical reference is distance above the instrument (bin height). The ADCP transducers were located approximately 0.13 m above the seafloor, so vertical profiles start at this offset above bed level. Time is given in UTC. Each dataset contains time-resolved vertical profiles of current velocity for the respective station. No further post-processing or filtering was applied.
Global identifier:
Doi(
"10.1594/PANGAEA.995164",
)
DataMeasurements(
DataMeasurements {
domain: Unspecified,
station: None,
measured_variables: [
"Current velocity, east-west",
"Current velocity, north-south",
"DATE/TIME",
"DEPTH, water",
"Event label",
],
methods: [
"Acoustic Doppler Current Profiling (ADCP), Nortek Aquadopp",
],
},
)
Tags: Auster ? Akustik ? Wattenmeer ? Sand ? Software ? Wasser ? Daten ? ADCP ? Aquadopp ? current velocity profiles ? flow measurements ? long term measurements ?
Region: Hotel Residence Starnberger Se
Bounding boxes: 6.898° .. 6.898° x 53.545° .. 53.545° 11.301° .. 11.301° x 47.953° .. 47.953°
License: Creative Commons Namensnennung 4.0 (Data access requires registration)
Language: Englisch/English
Modified: 2026-11-10
Last harvest: 11.11.2026 03:09
Time ranges: 2023-05-15 - 2023-06-27
Accessed 3 times.