Turbulent Mixing Regimes at the Termini of Three Marine-Terminating Glaciers in Southeast Kalaallit Nunaat (Greenland)

These data represent approximately 10% of those collected in 2024 during SD041 aboard the RRS Sir David Attenborough (SDA) as part of the Kang-Glac project (NERC grant NE/V006509/1). These data accompany the manuscript submitted to GRL: 'Multiple Turbulent Mixing Regimes at the Termini of Three Marine-Terminating Glaciers in Southeast Kalaallit Nunaat (Greenland)'.Laura Castro de la Guardia¹,², Mark E. Inall¹,², E. Povl Abrahamsen³, Lea Riehn², Bryony Freer⁴, Vicent Doñate Felip⁵, Lewis Drysdale¹,², Martim Mas e Braga³, John A. Howe¹,², Colm ÓCofaigh⁶, Kelly A. Hogan³ The data support our findings of several different types of mixing patterns along the glacier front. Mixing was strongest right next to where the underwater flows rose, but much weaker further away from the glacier. Areas not affected by these flows, but still close to the glacier, as well as places where meltwater came from land as runoff or via melting icebergs, showed moderate mixing. DATA – Instruments: 1) AUV Water column profiles and Bottom CTD transects were measured using Teledyne Gavia autonomous underwater vehicle (AUV). 2) Erebus water column profiles of CTD and turbidity at the glacier terminus were measured using a Sea-Bird Scientific SBE 19plus V2 (“SeaCAT”). The SeaCat was deployed from the workboat Erebus.3) SDA water column profiles CTD-turbidity through the fjord and on the shelf were measured using a Sea-Bird Scientific SBE 911plus CTD system with dual temperature/conductivity sensors and turbidity.4) MSS Water column profiles of CTD, energy dissipation (ϵ) and vertical diffusivity (K_z) were measured using Sea & Sun Technology microstructure and shear profiles MSS90