{"refrec":{"BRefID":110146,"RR":"<b>Buijsman, M.C.; Ridderinkhof, H.</b> (2007). Long-term ferry-ADCP observations of tidal currents in the Marsdiep inlet. <i>J. Sea Res. 57(4)</i>: 237-256. <a href=\"https://dx.doi.org/10.1016/j.seares.2006.11.004\" target=\"_blank\">https://dx.doi.org/10.1016/j.seares.2006.11.004</a>","BEntID":104813,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>J. Sea Res. 57(4)</i>: 237-256. <a href=\"https://dx.doi.org/10.1016/j.seares.2006.11.004\" target=\"_blank\">https://dx.doi.org/10.1016/j.seares.2006.11.004</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Buijsman, M.C.; Ridderinkhof, H.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Buijsman, M.C.; Ridderinkhof, H.","Englishabstract":"A unique, five-year long data set of ferry-mounted ADCP measurements in the Marsdiep inlet, the Netherlands, obtained between 1998 and 2003, is presented. A least-squares harmonic analysis was applied to the water transport, (depth-averaged) currents, and water level to study the contribution of the tides. With 144 tidal constituents, maximally 98% of the variance in the water transport and streamwise currents is explained by the tides, whereas for the stream-normal currents this is maximally 50%. The most important constituent is the semi-diurnal M<sub>2</sub> constituent, which is modulated by the second-largest S<sub>2</sub> constituent (about 27% of M<sub>2</sub>). Compound and overtides, such as 2MS<sub>2</sub>, 2MN<sub>2</sub>, M<sub>4</sub>, and M<sub>6</sub>, are important in the inlet. Due to interaction of M<sub>2</sub> with its quarter-diurnal overtide M<sub>4</sub>, the tidal asymmetry in the southern two thirds of the inlet is flood dominant. The amplitudes of all non-astronomic constituents are largest during spring tides, strongly distorting the water level and velocity curves. The M<sub>2</sub> water transport is 40° ahead in phase compared to the M<sub>2</sub> water level, reflecting the progressive character of the tidal wave in the inlet. The currents are strongly rectilinear and they are sheared vertically and horizontally, with the highest currents at the surface above the deepest part of the inlet. During spring tides, near-surface currents can be as large as 1.8 m s<sup>− 1</sup>. Due to the relative importance of inertia compared to friction, the M<sub>2</sub> currents near the centre (surface) lag maximal 20° (3°) in phase with the currents near the sides (bottom). The tidal-mean currents are directed into the basin in the shallower channel to the south and out of the basin in the deeper channel to the north.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Long-term ferry-ADCP observations of tidal currents in the Marsdiep inlet","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-10 01:31:33.379678","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"ADCP; Least-squares harmonic analysis","OtherDescriptors":null,"Notes":null,"AnaPub":2007,"MonPub":null,"DateUpdate":"2020-10-22","DateCreate":"2007-05-07","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000246389500001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.seares.2006.11.004"},"refs":null,"anarec":{"AnaID":110146,"PubliDate":2007,"Pagination":"237-256","XtraPublOfAnaID":null,"ISBN":null,"Volume":"57","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43261,"SerRR":"Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg.  ISSN 1385-1101; e-ISSN 1873-1414","StandardTitleSer":"Journal of Sea Research","ISSN":"1385-1101","AbbrevSer":"J. 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