This resource contains the following two datasets:19 Mp4/avi files containing clips of modelresults, including descriptive excel file1 excel file containing data on dipole source level spectra that were determined for the TSHDs at Maasvlakte 2Furthermore several reports are available.Taken from summary of TNO-DM_2012 R10818.PDFThe Port of Rotterdam is expanding to meet the growing demand to accommodatelarge cargo vessels. The construction of Maasvlakte 2 (MV2) started in September2008. The ‘Milieueffectrapport Aanleg Maasvlakte 2’ [1] provided a preliminaryassessment of the underwater sound produced during the construction of MV2.One of the licence conditions for Maasvlakte 2 is the monitoring of the underwatersound produced during its construction [2], with an emphasis on the establishmentof acoustic source levels of the Trailing Suction Hopper Dredgers (TSHDs) duringthe various activities at MV2: dredging, transport and discharge of sediment.TNO carried out measurement and analysis activities for this monitoring. During aninitial measurement campaign in September 2008, background measurements wereperformed in the absence of dredging. Those earlier measurements are describedin [3]. Source level and background noise measurements were made between22 September and 1 October 2009 in the MV2 dredging activities area.The measurement procedures are described in [4]. Analysis and results for the2009 measurements are reported in [5].[1] G.J.M. Meulepas, G.C. Duyckinck Dörner en W.C. van der Lans, 2007,Milieueffectrapport Aanleg Maasvlakte 2, Bijlage Milieukwaliteit, available athttp://www.maasvlakte2.com/kennisbank/Milieukwaliteit.pdf (last accessed 4October 2011)[2] Havenbedrijf Rotterdam N.V., Projectorganisatie Maasvlakte 2, 2008,Monitoringsplan Aanleg Maasvlakte 2, available athttp://www.maasvlakte2.com/kennisbank/2008-08 Monitoringsplan AanlegMaasvlakte 2 .pdf (last accessed 4 October 2011)[3] J. Dreschler, M.A. Ainslie, W. Groen; Measurements of underwaterbackground noise Maasvlakte 2, TNO-DV 2009 C212, May 2009, available athttp://www.noordzeeloket.nl/overig/bibliotheek.asp (last accessed 20 February2012)[4] P.A. van Walree, M.A. Ainslie, W. Groen; Measurement plan underwatersound Maasvlakte 2, TNO-DV 2008 C302, update, February 2009[5] C.A.F. de Jong, M.A. Ainslie, J. Dreschler, E. Jansen, E. Heemskerk,W. Groen; Underwater noise of Trailing Suction Hopper Dredgers at Maasvlakte2: analysis of source levels and background noise, TNO-DV 2010 C335,November 2010, available at http://www.noordzeeloket.nl/overig/bibliotheek.asp(last accessed 20 February 2012).

The data contains a series of bathymetry measurements performed during the extension of the port of Rotterdam (Maasvlakte 2). The measurements were performed at the site where the dredgers collected the sand. Data are gathered with:Multi-beamSide scan SonarMagnometerData is available at various resolutions:1 x 1 m (sonar)5 x 5 m (sonar)20 x 20 m (multi-beam)2.5 x 2.5 km (multi-beam aggregate)