{"projectrec":{"ProID":5248,"StandardTitle":"Mapping gradients in seafloor characteristics in the Belgian Part of the North Sea: MBES bases classification of the diverse sediment types and sediment plume dispersion due to sand extraction: detection and delimiation of sediment plumes with the MBES","OrigTitle":null,"Acronym":null,"AbstractEnglish":"Both research projects are part of the continuous study of the impact of human \r\nactivities on the seabed and water column in collaboration with ILVO and RBINS/OD \r\nNature, and are essential for the sustainable management of sand and gravel \r\nextraction on the Belgian Continental Shelf and in the Belgian territorial sea.\r\n1. Over the last 20 years, multibeam echosounder (MBES) bathymetry and\r\nbackscatter data and sediment samples have been acquired at regular \r\nintervals to monitor the impact of marine aggregate extraction in the Belgian \r\npart of the North Sea (BPNS). Although very valuable to monitor changes in \r\nseabed characteristics, no systematic and repetitive classifications of the \r\nseafloor were produced with these data until now. Anticipating on the next \r\nera in multibeam monitoring with the new RV Belgica and RV Simon Stevin, a \r\nspecific approach will be developed to (1) classify gradients in seafloor \r\ncharacteristics based on MBES data acquired at different frequencies and (2) \r\nidentify gradual changes in seafloor characteristics over time. To achieve this, \r\na detailed characterization of the acoustic, sedimentological, geotechnical and \r\nmacrobenthic properties of archetypal morpho-sedimentological \r\nenvironments of the BPNS is required on reference areas. \r\nDuring the cruises predefined reference area’s will be studied in detail: multi\u0002frequency acoustic mapping with EM2040D multibeam echosounder and \r\nsedimentological definition of the elementary sediment types through \r\nmultiple sampling and imaging/video recording with accurate positioning on \r\nthe seafloor. The location of the ground truthing positions will be defined on \r\nthe basis of the backscatter and acoustic classification maps, constructed \r\nonboard after the initial multibeam survey. The quantitative acoustic approach \r\nrequires a prior quality evaluation and calibration of the acoustic\r\nmeasurements with the EM2040D with surveys on the Kwinte reference zone.\r\n2. The planned sustainable adaptation of the fees for sand extraction in the \r\nBelgian part of the North Sea will take into account the specific environmental \r\nimpact of each extraction activity. In order to determine this objectively and \r\nscientifically based, additional and innovative research into the impact by \r\nmeans of sediment plumes is necessary, in particular into the range and \r\nnature of the impact. In this study, acoustic measurements are planned with \r\nthe EM2040D and Norbit on board the Simon Stevin and Zeekat. In addition, \r\nwater samples in the sediment plumes and continuous measurements of the \r\nsediment concentration in the water column are planned. This specific \r\nexperiment with sediment plumes from sand extraction activities fits in \r\nseamlessly with the objectives of the TURBEAMS project in which VLIZ, \r\nRBINS/OD Nature and Continental Shelf Service are already working together.\r\nThe research is part of the tasks of the Continental Shelf Service: to carry out \r\ncontinuous research into the influence of the exploitation of non-living resources of \r\nthe territorial sea and the continental shelf on the sediment deposits and the marine \r\nenvironment (Law of 13 June 1969 on the exploration and exploitation of non-living \r\nresources of the territorial sea and the continental shelf), and aims to enhance the \r\nscientific knowledge and expertise on this subject.\r\nThe regular (and legally required) monitoring of the impact of sand extraction is \r\ncarried out with RV Belgica. These specific projects, for which we work together with \r\nILVO, RBINS/OD Nature and VLIZ (TURBEAMS), will be carried out both with RV \r\nBelgica and RV Simon Stevin. The measurements and results of the research with \r\nboth research vessels can be combined to a large extent, and will contribute to a \r\ncomprehensive common quality evaluation and optimally promote the future \r\ninterchangeability of the acoustic measurements.","AbstractOtherLang":"Deze beide projecten kaderen binnen de continue studie naar de impact van \r\nmenselijke activiteiten op de zeebodem en waterkolom, en zijn noodzakelijk voor het \r\nduurzame beheer van de zand- en grindwinning op het Belgisch Continentaal Plat en \r\nin de Belgische territoriale zee.\r\n1. In de afgelopen 20 jaar zijn op gezette tijden met RV Belgica en RV Simon \r\nStevin bathymetrie- en backscattergegevens opgenomen met de multibeam \r\nechosounders (MBES) aan boord, en werden sedimentmonsters ingezameld\r\nom de impact van zandwinning in het Belgische deel van de Noordzee (BPNS) \r\nte monitoren. Hoewel zeer waardevol om veranderingen in de kenmerken van \r\nde zeebodem op te volgen, werden er tot nu toe geen systematische en \r\nrepetitieve classificaties van de zeebodem met deze gegevens geproduceerd. \r\nVooruitlopend op het volgend tijdperk in MBES monitoring met de nieuwe RV \r\nBelgica en RV Simon Stevin, zal een specifieke aanpak worden ontwikkeld om \r\n(1) gradiënten in zeebodemkenmerken te classificeren op basis van MBES\u0002gegevens die op verschillende frequenties zijn verkregen en (2) geleidelijke \r\nveranderingen in de kenmerken van de zeebodem in de loop van de tijd te \r\nidentificeren. Om dit te bereiken, is een gedetailleerde karakterisering van de \r\nakoestische, sedimentologische, geotechnische en macrobenthische \r\neigenschappen van archetypische morfo-sedimentologische omgevingen in \r\nhet BPNS vereist.\r\nTijdens de campagne worden vooraf gedefinieerde referentiezones in detail \r\nbestudeerd: multifrequente akoestische kartering met de EM2040D \r\nmultibeam echosounder en definiëring van de elementaire sedimenttypen \r\ndoor middel van meervoudige bemonstering en beeld- en video-opnames\r\nmet nauwkeurige positionering op de zeebodem. De locatie van de \r\nbemonsteringsposities wordt gedefinieerd op basis van de backscatter en \r\nakoestische classificatiekaarten, aan boord opgesteld na de voorgaande MBES \r\nkartering. De kwantitatieve akoestische aanpak vereist een voorafgaande \r\nkwaliteitsevaluatie en kalibratie van de akoestische metingen met de \r\nEM2040D op de Kwinte referentiezone.\r\n2. De geplande duurzame aanpassing van de tarieven voor zandwinning in het \r\nBelgisch deel van de Noordzee zal rekening houden met de specifieke milieu\u0002impact van elke ontginningsactiviteit. Om dit objectief en wetenschappelijk\r\ngefundeerd te bepalen is aanvullend en innovatief onderzoek naar de impact \r\nd.m.v. sedimentpluimen noodzakelijk, in het bijzonder naar het bereik en de \r\naard van de impact. In dit onderzoek worden akoestische metingen gepland \r\nmet de EM2040D en Norbit aan boord van de Simon Stevin en Zeekat. \r\nAanvullend worden watermonsters in de sedimentpluimen en continue \r\nmetingen van de sedimentconcentratie in de waterkolom gepland. Dit\r\nspecifieke experiment met sedimentpluimen afkomstig van \r\nzandwinningsactiviteiten sluit naadloos aan bij de objectieven van het project \r\nTURBEAMS waarin VLIZ, KBIN/OD Natuur en Dienst Continentaal Plat reeds \r\nsamenwerken.\r\nBeide specifieke onderzoeken kaderen binnen de opdrachten van de Dienst \r\nContinentaal Plat: continu onderzoek verrichten naar de invloed van de exploitatie \r\nvan niet-levende rijkdommen van de territoriale zee en het continentaal plat op de \r\nsedimentafzettingen en het mariene milieu (Wet van 13 juni 1969 inzake de \r\nexploratie en exploitatie van niet-levende rijkdommen van de territoriale zee en het \r\ncontinentaal plat), en bijdragen tot de wetenschappelijke kennis en expertise over dit \r\nonderwerp.\r\nDe reguliere (en wettelijk verplichte) monitoring van de impact van de zandwinning \r\ngebeurt met RV Belgica. Deze specifieke projecten, waarvoor samengewerkt wordt \r\nmet ILVO, KBIN/OD Natuur en VLIZ (TURBEAMS), zullen zowel uitgevoerd worden \r\nmet de RV Belgica en RV Simon Stevin. De metingen en resultaten van het onderzoek \r\nmet beide onderzoeksschepen zijn in hoge mate combineerbaar, en zullen bijdragen \r\ntot een uitgebreide gemeenschappelijke kwaliteitsevaluatie en de toekomstige \r\nuitwisselbaarheid van de akoestische metingen optimaal bevorderen","DateLastModified":{"date":"2024-05-06 10:25:46.257000","timezone_type":1,"timezone":"+00:00"},"ParentProID":null,"BeginYear":2021,"EndYear":2023,"BMonth":null,"EMonth":null,"BeginMonth":null,"EndMonth":null,"OrigTitleLangCode":null,"OrigTitleLangID":null,"OrigTitleLangNL":null,"OrigTitleLang":null,"OtherAbstractLangCode":"nl","OtherAbstractLangID":41,"OtherAbstractLang":"Dutch","OtherAbstractLangNL":"Nederlands","Progress":"Completed","ProgressNL":"Afgelopen","PublicFlag":1,"CheckedFlag":0,"ND":"2022-09-26","UD":"2024-01-01","DMPFlag":0,"Budget":null,"BudgetCurrency":"EUR"},"parent":null,"persons":null,"projects":null,"events":null,"datasets":null,"institutes":[{"instituterec":{"Acronym":"ILVO","ProPartID":17567,"PublicFlag":1,"OrigNameLangCode":"en","OrigNameLangID":15,"FullOrigName":"Flanders Research Institute for Agriculture, Fisheries and Food","Line1":"Burgemeester Van Gansberghelaan 92","Line2":"9820 Merelbeke","Line3":null,"Line4":null,"InsID":5442,"FullStandardName":"Instituut voor Landbouw-, Visserij- en 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