{"refrec":{"BRefID":355841,"RR":"<b>de Bakker, A.T.M.; Tissier, M.F.S.; Ruessink, B.G.</b> (2014). Shoreline dissipation of infragravity waves. <i>Cont. Shelf Res. 72</i>: 73-82. <a href=\"https://dx.doi.org/10.1016/j.csr.2013.11.013\" target=\"_blank\">https://dx.doi.org/10.1016/j.csr.2013.11.013</a>","BEntID":353555,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Cont. Shelf Res. 72</i>: 73-82. <a href=\"https://dx.doi.org/10.1016/j.csr.2013.11.013\" target=\"_blank\">https://dx.doi.org/10.1016/j.csr.2013.11.013</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"de Bakker, A.T.M.; Tissier, M.F.S.; Ruessink, B.G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"de Bakker, A.T.M.; Tissier, M.F.S.; Ruessink, B.G.","Englishabstract":"Infragravity waves (0.005–0.05 Hz) have recently been observed to dissipate a large part of their energy in the short-wave (0.05–1 Hz) surf zone, however, the underlying mechanism is not well understood. Here, we analyse two new field data sets of near-bed pressure and velocity at up to 13 cross-shore locations in ≲2:5 m depth on a ≈ 1 : 80 and a ≈ 1 : 30 sloping beach to quantify infragravity-wave dissipation close to the shoreline and to identify the underlying dissipation mechanism. A frequency- domain Complex Eigenfunction analysis demonstrated that infragravity-wave dissipation was frequency dependent. Infragravity waves with a frequency larger than ≈ 0:0167–0:0245 Hz were predominantly onshore progressive, indicative of strong dissipation of the incoming infragravity waves. Instead, waveswith a lower frequency showed the classic picture of cross-shore standing waves with minimal dissipation. Bulk infragravity reflection coefficients at the shallowest position (water depth ≈ 0:7 m) were well below 1 (≈ 0:20), implying that considerable dissipation took place close to the shoreline.We hypothesise that for our data sets infragravity-wave breaking is the dominant dissipation mechanism close to the shoreline, because the reflection coefficient depends on a normalised bed slope, with thehigher infragravity frequencies in the mild-sloping regime where breaking is known to dominate dissipation. Additional numerical modelling indicates that, close to the shoreline of a 1:80 beach, bottom friction contributes to infragravity-wave dissipation to a limited extent, but that non-linear transfer of infragravity energy back to sea–swell frequencies is unimportant.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Shoreline dissipation of infragravity waves","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-12 01:32:12.641216","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Infragravity waves, Energy flux, Reflection, Dissipation, Wave breaking","OtherDescriptors":null,"Notes":null,"AnaPub":2014,"MonPub":null,"DateUpdate":"2022-09-29","DateCreate":"2022-09-29","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000329880000007","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.csr.2013.11.013"},"refs":null,"anarec":{"AnaID":355841,"PubliDate":2014,"Pagination":"73-82","XtraPublOfAnaID":null,"ISBN":null,"Volume":"72","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42769,"SerRR":"Continental Shelf Research. Pergamon Press: Oxford; New York.  ISSN 0278-4343; e-ISSN 1873-6955","StandardTitleSer":"Continental Shelf Research","ISSN":"0278-4343","AbbrevSer":"Cont. 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