{"refrec":{"BRefID":363975,"RR":"<b>Batchelor, C.L.; Christie, F.D.W.; Ottesen, D.; Montelli, A.; Evans, J.; Dowdeswell, E.K.; Bjarnadóttir, L.R.; Dowdeswell, J.A.</b> (2023). Rapid, buoyancy-driven ice-sheet retreat of hundreds of metres per day. <i>Nature (Lond.) 617(7959)</i>: 105-110. <a href=\"https://dx.doi.org/10.1038/s41586-023-05876-1\" target=\"_blank\">https://dx.doi.org/10.1038/s41586-023-05876-1</a>","BEntID":361695,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Nature (Lond.) 617(7959)</i>: 105-110. <a href=\"https://dx.doi.org/10.1038/s41586-023-05876-1\" target=\"_blank\">https://dx.doi.org/10.1038/s41586-023-05876-1</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Batchelor, C.L.; Christie, F.D.W.; Ottesen, D.; Montelli, A.; Evans, J.; Dowdeswell, E.K.; Bjarnadóttir, L.R.; Dowdeswell, J.A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Batchelor, C.L. <i>et al.</i>","Englishabstract":"Rates of ice-sheet grounding-line retreat can be quantified from the spacing of corrugation ridges on deglaciated regions of the seafloor providing a long-term context for the approximately 50-year satellite record of ice-sheet change. However, the few existing examples of these landforms are restricted to small areas of the seafloor, limiting our understanding of future rates of grounding-line retreat and, hence, sea-level rise. Here we use bathymetric data to map more than 7,600 corrugation ridges across 30,000 km<su>2</sup> of the mid-Norwegian shelf. The spacing of the ridges shows that pulses of rapid grounding-line retreat, at rates ranging from 55 to 610 m day<sup>−1</sup>, occurred across low-gradient (±1°) ice-sheet beds during the last deglaciation. These values far exceed all previously reported rates of grounding-line retreat across the satellite and marine-geological records. The highest retreat rates were measured across the flattest areas of the former bed, suggesting that near-instantaneous ice-sheet ungrounding and retreat can occur where the grounding line approaches full buoyancy. Hydrostatic principles show that pulses of similarly rapid grounding-line retreat could occur across low-gradient Antarctic ice-sheet beds even under present-day climatic forcing. Ultimately, our results highlight the often-overlooked vulnerability of flat-bedded areas of ice sheets to pulses of extremely rapid, buoyancy-driven retreat.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Rapid, buoyancy-driven ice-sheet retreat of hundreds of metres per day","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-13 01:32:00.075712","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2023,"MonPub":null,"DateUpdate":"2023-05-04","DateCreate":"2023-05-04","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000990835100006","VABBcode":null,"OpenAcc":0,"DOI":"10.1038/s41586-023-05876-1"},"refs":null,"anarec":{"AnaID":363975,"PubliDate":2023,"Pagination":"105-110","XtraPublOfAnaID":null,"ISBN":null,"Volume":"617","Issue":"7959","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43431,"SerRR":"Nature: International Weekly Journal of Science. 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