@article {apr, title = {Asynchronous behavior of outlet glaciers feeding Godth{\aa}bsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia{\textquoteright}s retreat in SW Greenland}, journal = {J. Glaciol.}, volume = {63}, year = {2017}, month = {apr}, pages = {288{\textendash}308}, abstract = {We assess ice loss and velocity changes between 1985 and 2014 of three tidewater and five-land terminating glaciers in Godth{\aa}bsfjord (Nuup Kangerlua), Greenland. Glacier thinning accounted for 43.8 {\textpm} 0.2 km 3 of ice loss, equivalent to 0.10 mm eustatic sea-level rise. An additional 3.5 {\textpm} 0.3 km 3 was lost to the calving retreats of Kangiata Nunaata Sermia (KNS) and Narsap Sermia (NS), two tidewater glaciers that exhibited asynchronous behavior over the study period. KNS has retreated 22 km from its Little Ice Age (LIA) maximum (1761 AD), of which 0.8 km since 1985. KNS has stabilized in shallow water, but seasonally advects a 2 km long floating tongue. In contrast, NS began retreating from its LIA moraine in 2004{\textendash}06 (0.6 km), re-stabilized, then retreated 3.3 km during 2010{\textendash}14 into an over-deepened basin. Velocities at KNS ranged 5{\textendash}6 km a -1 , while at NS they increased from 1.5 to 5.5 km a -1 between 2004 and 2014. We present comprehensive analyses of glacier thinning, runoff, surface mass balance, ocean conditions, submarine melting, bed topography, ice m{\'e}lange and conclude that the 2010{\textendash}14 NS retreat was triggered by a combination of factors but primarily by an increase in submarine melting.}, keywords = {glacier calving, glacier discharge, glacier mass balance, ice/atmosphere interactions, ice/ocean interactions, tidewater glaciers}, issn = {0022-1430}, doi = {10.1017/jog.2016.138}, author = {Motyka, Roman J. and Cassotto, Ryan and Truffer, Martin and Kjeldsen, Kristian K. and Van As, Dirk and Korsgaard, Niels J. and Fahnestock, Mark and Howat, Ian and Langen, Peter L. and Mortensen, John and Lennert, Kunuk and Rysgaard, S{\o}ren} } @article {357, title = {Rapid thinning of lake-calving Yakutat Glacier and the collapse of the Yakutat Icefield, southeast Alaska, USA}, journal = {J. Glaciol.}, volume = {59}, year = {2013}, pages = {149{\textendash}161}, issn = {00221430}, doi = {10.3189/2013J0G12J081}, url = {http://www.igsoc.org/journal/59/213/t12J081.html}, author = {Tr{\"u}ssel, Barbara L. and Motyka, Roman J. and Truffer, M. and Larsen, C. F.} } @article {360, title = {Observing calving-generated ocean waves with coastal broadband seismometers, Jakobshavn Isbr{\ae}, Greenland}, journal = {Annals Of Glaciology}, volume = {53}, year = {2012}, pages = {79{\textendash}84}, doi = {10.3189/2012/AoG60A200}, author = {Amundson, J. M. and Clinton, John F and Fahnestock, M.A. and Truffer, M. and Motyka, Roman J. and L{\"u}thi, Martin P.} } @article {364, title = {Episodic reactivation of large-scale push moraines in front of the advancing Taku Glacier, Alaska}, journal = {J. Geophys. Res.}, volume = {111}, year = {2006}, pages = {{\textendash}01009}, issn = {0148-0227}, doi = {10.1029/2005JF000385}, url = {http://www.agu.org/pubs/crossref/2006/2005JF000385.shtml}, author = {Kuriger, Elsbeth Maria and Truffer, M. and Motyka, Roman J. and Bucki, Adam K.} } @article {dec, title = {Rapid erosion of soft sediments by tidewater glacier advance: Taku Glacier, Alaska, USA}, journal = {Geophys. Res. Lett.}, volume = {33}, year = {2006}, month = {dec}, pages = {1{\textendash}5}, issn = {0094-8276}, doi = {10.1029/2006GL028467}, url = {http://www.agu.org/pubs/crossref/2006/2006GL028467.shtml}, author = {Motyka, Roman J. and Truffer, M. and Kuriger, Elsbeth Maria and Bucki, Adam K.} } @article {373, title = {Subglacial drilling at Black Rapids Glacier, Alaska, U.S.A : drilling method and sample descriptions}, journal = {J. Glaciol.}, volume = {45}, year = {1999}, pages = {495{\textendash}505}, author = {Truffer, M. and Motyka, Roman J. and Harrison, W.D. and Echelmeyer, K. A. and Fisk, B. and Tulaczyk, S.} }