Consolidation of fresh ice ridges for different scales

Salganik, Evgenii; Høyland, Knut V.; Maus, Sönke

doi:10.1016/j.coldregions.2019.102959

Cited by 5 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Multi-year ice in the Pacific and eastern sectors of the Arctic Ocean is being depleted gradually (Serreze and Meier, 2018), resulting in the domination of seasonal ice. Consequently, a deformation of the ice field creates unfrozen first-year ice ridges (Salganik et al, 2020). These new ridge areas, together with the newly formed thin ice area in leads, are mechanically vulnerable parts of the ice field, and predispose the ice field to further deformation under external forces.…”

Section: Discussionmentioning

confidence: 99%

“…Cracks or leads in the pack ice serve as windows that expose the ocean to sunlight, promoting under-ice haptophyte algae blooms (Assmy et al, 2017). Especially under converging conditions, ice blocks are packed randomly during the formation of sea ice pressure ridges, creating water-filled voids that act as thermal buffers for subsequent ice growth (Salganik et al, 2020). The high porosity of pressure ridges results in an abundance of nutrients for ice algae communities.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal changes in sea ice kinematics and deformation in the Pacific Sector of the Arctic Ocean in 2018/19

Lei¹,

Hoppmann²,

Cheng³

et al. 2020

Preprint

View full text Add to dashboard Cite

Abstract. Arctic sea ice kinematics and deformation play significant roles in heat and momentum exchange between atmosphere and ocean. However, mechanisms regulating their changes at seasonal scales remain poorly understood. Using position data of 32 buoys in the Pacific sector of the Arctic Ocean (PAO), we characterized spatiotemporal variations in ice kinematics and deformation for autumn–winter 2018/19. In autumn, sea ice drift response to wind forcing and inertia were stronger in the southern and western than in the northern and eastern parts of the PAO. These spatial heterogeneities decreased gradually from autumn to winter, in line with the seasonal evolution of ice concentration and thickness. Areal localization index decreased by about 50 % from autumn to winter, suggesting the enhanced localization of intense ice deformation as the increased ice mechanical strength. In winter 2018/19, a highly positive Arctic Dipole and a weakened high pressure system over the Beaufort Sea led to a distinct change in ice drift direction and an temporary increase in ice deformation. During the freezing season, ice deformation rate in the northern part of the PAO was about 2.5 times that in the western part due to the higher spatial heterogeneity of oceanic and atmospheric forcing in the north. North–south and east–west gradients in sea ice kinematics and deformation of the PAO observed in autumn 2018 are likely to become more pronounced in the future as sea ice losses at higher rates in the western and southern than in the northern and western parts.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%