Submarine geomorphology of the northeastern Baffin Island fiords and cross-shelf troughs

• Main Authors: Brouard, Etienne, Lajeunesse, Patrick
• Format: Dataset
• Language: unknown
• Published: Taylor & Francis 2021
• Subjects: 59999 Environmental Sciences not elsewhere classified; FOS Earth and related environmental sciences; Ecology; FOS Biological sciences; 69999 Biological Sciences not elsewhere classified; Inorganic Chemistry; FOS Chemical sciences; Arctic; Baffin Island; Canada; Baffin; Ice Sheet
• Online Access: https://dx.doi.org/10.6084/m9.figshare.9569684; https://tandf.figshare.com/articles/dataset/Submarine_geomorphology_of_the_northeastern_Baffin_Island_fiords_and_cross-shelf_troughs/9569684

This paper presents a series of 50 geomorphological maps of the seabed of northeastern Baffin Island fiords and cross-shelf troughs, in eastern Arctic Canada. The mapping was produced using swath bathymetry imagery from multiple bathymetry datasets. A total of 24 types of landform were systematically mapped (>55,000 landforms) and reflect processes linked to subglacial, ice-marginal or paraglacial to postglacial environments. The landforms record the transition of the seabed from being covered by a marine-terminating ice sheet to the establishment of postglacial conditions. The landform assemblages allow the distinction of ice-flows orientation and ice-stream pathways along fiords and cross-shelf troughs. The multiple moraines and grounding-zone wedges indicate that the ice margin stabilized during retreat and that the overall deglaciation occurred by steps. These maps provide a framework for future investigations in northeastern Baffin Island fiords and shelf and can also provide a template for future seabed geomorphological studies in Arctic Canada.