Water masses, circulation and change in the modern Southern Ocean

Carter, Lionel; Bostock-Lyman, Helen; Bowen, Melissa

doi:10.1016/b978-0-12-819109-5.00003-7

Cited by 10 publications

(3 citation statements)

References 141 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While this is an extreme (and some consider to be unlikely) scenario (IPCC, 2021), the fact that such controversies exist in this field is testament to the uncertainties that remain concerning future climate change impacts on ocean conditions. Southern Ocean currents are also responding to increasing winds but in the case of the Antarctic Circumpolar Currentthe world's largest flowit is unclear if the current is intensifying or becoming more turbulent (Carter et al, 2022). In essence, there is far from scientific consensus on ocean current responses to climate J o u r n a l P r e -p r o o f change as feedbacks are dynamic and complicated.…”

Section: Changing Patterns In Ocean Currentsmentioning

confidence: 99%

Climate change hotspots and implications for the global subsea telecommunications network

Clare

Yeo

Bricheno

et al. 2023

Earth-Science Reviews

View full text Add to dashboard Cite

Section: Changing Patterns In Ocean Currentsmentioning

confidence: 99%

Climate change hotspots and implications for the global subsea telecommunications network

Clare

Yeo

Bricheno

et al. 2023

Earth-Science Reviews

View full text Add to dashboard Cite

“…The Antarctic Circumpolar Current (ACC), which is the most prominent oceanographic feature in the Southern Ocean, flows eastward around Antarctica (Whitworth, 1988;Cunningham et al, 2003;Carter et al, 2022) (upper right inset of Figure 1). Located south of the ACC, the Ross Gyre is a clockwise circulation element influenced by the advance and retreat of the Antarctic ice sheets (Kennedy et al, 2015;Carter et al, 2022). The Ross Gyre can entrain the CDW to the Ross Sea outer continental margin (Orsi and Wiederwohl, 2009).…”

Section: Oceanographic Settingmentioning

confidence: 99%

“…In the Ross Sea, ASC is a bottom water current that is located further south of Ross Gyre. The ASC flows westward along the Antarctic margin slope, driven by the easterly polar winds (Chavanne et al, 2010;Armitage et al, 2018;Carter et al, 2022).…”

Section: Oceanographic Settingmentioning

confidence: 99%

Hunting paleoceanographic archives of ice sheet-ocean interaction in the northwestern Ross Sea, Antarctica

Kim,

De Santis,

Hong

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

The analysis of sedimentary deposits influenced by bottom currents in glaciated continental margins provides crucial insights into paleo-depositional and oceanographic conditions. These reconstructions enable the assessment of interactions between advance and retreat of grounded ice sheets and past ocean circulation patterns. However, questions regarding these interactions and their specific mechanisms remain largely unanswered due to a lack of data in this remote area. In this study, we conducted a comprehensive analysis by integrating marine geophysical data, surficial sediment cores, oceanographic measurements, and ocean circulation models. Our aim was to understand spatial and temporal variations in sedimentary and oceanographic conditions during the past glacial and interglacial periods in combination with the long-term stratigraphic evolution. By integrating and cross-referencing diverse datasets, we were able to infer how bottom-current-controlled deposits (i.e., contourites) developed along the western bathymetric high of the Central Basin in the northwestern Ross Sea margin, Antarctica. Contouritic deposits lying over and along the flanks of bathymetric highs were identified through their mound-shaped external geometry and acoustically stratified facies, characterized by reflectors pinching toward the moat. Acoustic facies and multi-beam backscatter results, in conjunction with sedimentary core data, revealed contrasting patterns. Bathymetric highs exhibited thin (<10 m thick) coarser-grained sedimentary layers with higher backscatter, while the lower slope and rise displayed thick (>10 m thick), finer-grained stratified sediments with lower backscatter. These findings indicate that seabed winnowing occurred by strong bottom current during past glacial periods as supported by sedimentological analysis. The pathways of the westward-deflected dense shelf water outflow and the westward-flowing along-slope current, as simulated by oceanographic models, explain the distinctive development of contourites influenced by bottom-current processes. Moreover, the large accumulations of sediment in the contourites, resulting from bathymetric barriers in the north of the Central Basin, may contribute to submarine slope failures.

show abstract

The Antarctic Continent in Gondwana: a perspective from the Ross Embayment and Potential Research Targets for Future Investigations

Talarico

Ghezzo

Kleinschmidt

2022

Antarctic Climate Evolution

View full text Add to dashboard Cite

Water masses, circulation and change in the modern Southern Ocean

Cited by 10 publications

References 141 publications

Climate change hotspots and implications for the global subsea telecommunications network

Climate change hotspots and implications for the global subsea telecommunications network

Hunting paleoceanographic archives of ice sheet-ocean interaction in the northwestern Ross Sea, Antarctica

The Antarctic Continent in Gondwana: a perspective from the Ross Embayment and Potential Research Targets for Future Investigations

Contact Info

Product

Resources

About