Bathymetry of the southern part of the Baltic Sea in the vicinity of the Coastal Research Station (CRS) in Lubiatowo - year 2017 and 2018

2020-03-17T06:42:58Z (GMT) by Magdalena Stella
Date of the measuring works: November 07-08, 2017 and December 17-18, 2018 The coordinates of the vertices of the polygon: 54 ° 50'14 "N 17 ° 48'37" E, 54 ° 49'57 "N 17 ° 48'45" E, 54 ° 50'22 "N 17 ° 51'03 "E, and 54 ° 50'38" N 17 ° 50'54 "E. Coordinate system: The Polish height coordinate system Kronsztad 86 (PL-KRON86-NH) and the horizontal coordinate system UTM 33 (PL-UTM-33). Conditions during the measurements on 2017: Wave direction: N-E Wave height [m]: 0.2 – 0.4 Wind direction: N-W Wind velocity [m/s]: 3 - 4 Additional information: a small swell wave from the east Conditions during the measurements on 2018: Wave direction: W Wave height [m]: 0.2 – 0.4 Wind direction: N-W Wind velocity [m/s]: 3 - 4 In 2017, measurements were carried out with a multibeam sonar MultibeamResonSeaBat 8101 at a frequency of 240 kHz. In 2018, the study was performed with a multibeam sonar MultibeamResonSeaBat 7125 at a frequency of 400 kHz. Both sonars were mounted centrally on the bow of the boat. 25 profile passes were made, each 2500 m long, every 20 m. Before measurements, the sonar was calibrated on the Margaret wreck. Prior to calibration and measurements, the sound velocity was measured in a water column at intervals of 0.5 m. RTK corrections were downloaded from Leica SmartNet, which resulted in a position accuracy of up to 2 - 5 cm. A positioning compensator IXBlueOctans 1000 was also used to support positioning.

License

CC BY 4.0