Results 171 to 180 of about 217,287 (287)

Standing Meanders of the Antarctic Circumpolar Current: Evidence for Ridge‐Controlled Eddy Saturation

Journal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.
Abstract The standing meanders of the Antarctic Circumpolar Current are key sites of mixing and meridional transport in the Southern Ocean, but their long‐term variability and trends remain poorly understood. Here, we investigate the Pacific‐Antarctic Ridge meander using satellite altimetry data from 1993 to 2023.
Xinlong Liu, Chengcheng Yang, Yanyu Chen
wiley   +1 more source

Antarctic bottom water flow through the Vema fracture zone [PDF]

, 1980
During the October-November 1977 R/V "Jean Charcot" cruise, bathymetric and hydrological surveys of the Eastern Vema Fracture Zone were carried out in order to moor current meters on the silliocated in the area, with the aim of evaluating the bottom water flow through this passage in the Mid-Atlantic Ridge.
openaire  

Seasonal Changes in Marine Archaeal Tetraether Lipid Export Depth Linked to Net Primary Productivity

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract Marine ammonia oxidizing archaea (AOA) produce isoprenoid glycerol dibiphytanyl glycerol tetraethers (GDGTs) which form the basis of seawater temperature proxy TEX86. Although most studies use TEX86 for sea surface temperature (SST) reconstructions, maximum GDGT production occurs at and below the nitracline. Moreover, sedimentary GDGT‐2/GDGT‐3
Addison Rice, Eunmi Park, Gesine Mollenhauer, Daisy Bouwmans, Anouk van Boxtel, Gert J. de Lange, Ryan Paul, Francesca Sangiorgi, Ryan Smulders, Jan‐Berend Stuut, Martin Ziegler, Appy Sluijs, Francien Peterse   +12 more
wiley   +1 more source

Plio‐Pleistocene Antarctic Bottom Water Production in the Ross Sea Reconstructed From Hillary Canyon Levee Turbidites

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract Dense shelf water (DSW) formed on Antarctica's continental shelves is a significant precursor for Antarctic Bottom Water (AABW), a critical component of global overturning circulation. We hypothesize that DSW cascades off the central Ross Sea shelf generated density currents that entrained sediment as they flowed down Hillary Canyon, resulting
Natalia Varela, Brian W. Romans, Zoltán Sylvester, Molly O. Patterson, Denise K. Kulhanek, Laura De Santis, Robert McKay   +6 more
wiley   +1 more source

Pliocene–Pleistocene Redox Evolution of the Peruvian Margin: A Multi‐Proxy Approach

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract Due to upwelling of nutrient‐rich waters, the Peruvian Margin is one of the most productive regions of the global ocean, hosting one of the most pronounced and shallowest oxygen minimum zones. This combination of high productivity and low oxygen makes the Peruvian margin a critical site for reconstructing past environmental changes.
P. L. Fraga‐Ferreira, C. Siebert, M. F. Lehmann, M. Frank, F. Scholz   +4 more
wiley   +1 more source

An Explicit Test of Kill the Winner: Protistan Grazing and Phage Lysis Differentially Impact Fast‐Growing Bacterial Taxa in the Coastal Antarctic

Environmental Microbiology, Volume 28, Issue 2, February 2026.
We evaluated whether predators ‘kill the winner’ wherein protists and phages preferentially impact the most abundant members of bacterial assemblages over an austral summer with weekly dilution experiments. Seawater from 10 m was divided into two serial dilutions with either 0.2 μm (to evaluate protist grazing) or 30 kDa (to evaluate protist grazing ...
Elizabeth Connors, Abigail Coker, Grace S. Wang, Lisa Zeigler, Jeff S. Bowman   +4 more
wiley   +1 more source

A review of autonomous reef monitoring structures (ARMS) for monitoring hard‐bottom benthic biodiversity

Methods in Ecology and Evolution, Volume 17, Issue 2, Page 435-455, February 2026.
Abstract Amid increasing anthropogenic pressures on ecosystems, standardised biodiversity monitoring is critical for assessing biodiversity change. Marine hard‐bottom habitats, though ubiquitous and biodiverse, present challenges for biodiversity monitoring due to their complex structure and limited accessibility. Autonomous reef monitoring structures (
Aaron Jessop, Margaux Steyaert, Nauras Daraghmeh, Justine Pagnier, Melody S. Clark, Lloyd S. Peck, Keiron P. P. Fraser   +6 more
wiley   +1 more source

Deep Argo reveals bottom water properties and pathways in the Australian‐Antarctic Basin

Journal of Geophysical Research: Oceans, 2021
A. Foppert, S. Rintoul, S. Purkey, N. Zilberman, Taiyo Kobayashi, J. Sallée, Esmee M. Wijk, Luke O. Wallace   +7 more
semanticscholar   +1 more source

Unravelling echinoid mass mortalities: a global overview of mechanisms, spatio‐temporal trends, and taxonomic insights

Biological Reviews, Volume 101, Issue 1, Page 221-236, February 2026.
ABSTRACT Mass mortality events (MMEs) have been occurring since the dawn of time. However, in contrast to terrestrial events, most marine MMEs remain undetected, largely due to the inaccessibility of many marine environments. One of the most notorious and best‐studied marine MMEs in modern times is that of the population collapse of the echinoid ...
Lisa‐Maria Schmidt, Guillermo Anderson Benaim, Omri Bronstein   +2 more
wiley   +1 more source

Reduced Antarctic Bottom Water overturning rate during the early last deglaciation inferred from radiocarbon records. [PDF]

Nat Commun
Gu S, Liu Z, Zhao N, Chen T, Yu J, Zhang J, He C, Chen S, Zhang Z, Li L, Jahn A.   +10 more
europepmc   +1 more source