oceanography

This chilly patch of ocean is likely a result of a vital ocean current system’s instability

Earth has exactly 5 major ocean gyres. The SOL 7-node geometry on a sphere predicts 7 × 2 hemispheres = 14 possible gyre positions, reduced to 5 active gyres by continental blocking (4 of 14 blocked) — consistent with the observed count. Gyre centers align with SOL 7-node longitude positions to within 14.3° for all 5 gyres (0.0°, 0.4°, 7.9°, 13.6°, 14.3° deviations). The SOL atmospheric coherence…

Abstract Eddies play an important role in the regulation of oceanic heat redistribution. This study investigates and analyzes submesoscale eddies in the upper ocean from the edge of the Beaufort Shelfbreak to the southern Canada Basin using data from the MITgcm LLC4320 model, focusing on their spatiotemporal distribution, trajectories, heat content, and variations in anomalous heat content. The r…

Abstract The Agulhas Return Current (ARC) transports warm, salty subtropical waters eastward into the South Indian Ocean, where it meets cold, fresh Southern Ocean waters to the south, creating strong meridional surface temperature and salinity gradients. Analysis of Argo data reveals coherent interannual variations in surface temperature (~ 1 °C) and salinity (~ 0.2 g/kg) downstream of the ARC f…

Smart Sound Connect Subsurface extends the capabilities offered through the UK's premier marine autonomy testbed beneath the ocean surface

Tahitian big-wave surfer Tikanui Smith prefers to paddle his surfboard into monster waves, rather than be towed behind a jet ski. Smith explains what it's like to ride monster swell in Nazare, Portugal. The post No Jet Ski, No Problem. What It’s Like to Paddle into a 70-Foot Wave. appeared first on Outside Online .

Nature Communications, Published online: 19 June 2026; doi:10.1038/s41467-026-74612-w Rising seas threaten the capacity of coral reefs to maintain their structure and ecosystem services on which millions depend. This study analyses Indo-Pacific Holocene fossil records to show that 76% of reefs risk submergence by 2100, with reef growth unlikely to be sufficient when sea-level rise exceeds 5.3 mm …

Surface current observations collected from December 2024 to February 2025 were analyzed to investigate tidal dynamics and residual circulation in the coastal waters off the Red River Delta, northern Vietnam. Harmonic analysis was applied to identify the dominant tidal constituents and their spatial characteristics, while residual currents were obtained by removing the principal tidal components.…

Update on Ocean Observatories Initiative The U.S. National Science Foundation appreciates the concerns raised by the range of stakeholders that have informed us they rely on data from the Ocean Observatories Initiative (OOI). Effective immediately, NSF will not proceed with further removal or descoping of equipment from the remaining arrays and will continue operations including planned maintenan…

Move to dismantle $368m sea observatory initiative faced opposition from experts and lawmakers The Donald Trump administration has reversed its decision to dismantle a $368m deep-sea observation system following an outcry from lawmakers and ocean experts . On Thursday, the National Science Foundation announced that it would halt plans to dismantle the Ocean Observatories Initiative, stating: “eff…

In 1997, NOAA researchers recorded a mysterious ultra-low-frequency noise so powerful it registered on sensors thousands of miles apart.

The effort to pull some 900 ocean-monitoring buoys and sensors from the water drew backlash from scientists and lawmakers

This paper constitutes Part C of a three-part review series addressing tsunamigenic earthquakes in the Makran Subduction Zone (MSZ), with a specific focus on tsunami hazard and risk assessment methodologies. It provides a comprehensive, multidisciplinary synthesis of probabilistic and deterministic tsunami hazard assessments and associated risk analyses developed for the MSZ, integrating advances…

Nature, Published online: 17 June 2026; doi:10.1038/s41586-026-10614-4 Although Antarctic ice loss projections diverge widely by 2100, this Perspective shows that present-day rates robustly predict mid-century sea level rise, providing a firm basis for near-term planning, while highlighting priorities for model development aimed at resolving longer-term sea level rise uncertainty.

An abnormally cold patch of water in the North Atlantic Ocean has triggered changes in the Indian summer monsoon via the jet stream winds, new research suggests.

Florida State University researchers have identified key differences in the root causes of long-term sea-surface temperature changes across the Atlantic and Pacific oceans, a finding that could help guide future research on ocean variability.

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