{"refrec":{"BRefID":324643,"RR":"<b>Dowdeswell, J.A.; Batchelor, C.L.; Montelli, A.; Ottesen, D.; Christie, F.D.W.; Dowdeswell, E.K.; Evans, J.</b> (2020). Delicate seafloor landforms reveal past Antarctic grounding-line retreat of kilometers per year. <i>Science (Wash.) 368(6494)</i>: 1020-1024. <a href=\"https://dx.doi.org/10.1126/science.aaz3059\" target=\"_blank\">https://dx.doi.org/10.1126/science.aaz3059</a>","BEntID":318120,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Science (Wash.) 368(6494)</i>: 1020-1024. <a href=\"https://dx.doi.org/10.1126/science.aaz3059\" target=\"_blank\">https://dx.doi.org/10.1126/science.aaz3059</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Dowdeswell, J.A.; Batchelor, C.L.; Montelli, A.; Ottesen, D.; Christie, F.D.W.; Dowdeswell, E.K.; Evans, J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Dowdeswell, J.A. <i>et al.</i>","Englishabstract":"A suite of grounding-line landforms on the Antarctic seafloor, imaged at submeter horizontal resolution from an autonomous underwater vehicle, enables calculation of ice sheet retreat rates from a complex of grounding-zone wedges on the Larsen continental shelf, western Weddell Sea. The landforms are delicate sets of up to 90 ridges, <1.5 meters high and spaced 20 to 25 meters apart. We interpret these ridges as the product of squeezing up of soft sediment during the rise and fall of the retreating ice sheet grounding line during successive tidal cycles. Grounding-line retreat rates of 40 to 50 meters per day (>10 kilometers per year) are inferred during regional deglaciation of the Larsen shelf. 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