Carrivick, Jonathan L., TWEED, Fiona, Carling, Paul, Alho, Petteri, Marren, Philip M., Staines, Kate, Russell, Andrew J., Rushmer, E. Lucy and Duller, Robert (2013) Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012. Geomorphology, 201. pp. 512-519. ISSN 0169555X