Long-Term Monitoring of Gas Emissions at Southern Hydrate Ridge

Methane bubble emissions detected by the MARUM overview sonar over the Southern Hydrate Ridge summit. The location and size of the bubble plumes vary considerably over time.

Identifying the parameters that control or influence seabed methane release is important to refining understanding of the carbon cycle. Data from the Regional Cabled Array are providing time-series required to quantify the flux of methane from the seafloor.

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Facilitating Observatory-Based Subseafloor Science

Data flowing from the Regional Cabled Array forms an unparalleled foundation to understand the relationships between microbial, hydrological, geochemical, and geophysical processes in active oceanic crust. Proposed Axial drilling will provide a unique opportunity to determine the nature of subseafloor hydrological properties and develop a 3-D understanding of subseafloor processes in unsedimented crust.

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Discovery of Axial Seamount Deep Melt-Mush Feeder Conduit

Recent observations at Axial Seamount provide new seismic images of the deep magma plumbing system, revealing a stacked sill complex beneath the main magma reservoir of this submarine volcano. The discovery of this deep melt-mush conduit at Axial, where long-term monitoring observations are supported by the Regional Cabled Array, is providing new understanding of magmatic systems on Earth.

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A Data Assimilative Reanalysis at the New England Shelf Pioneer Array

Scientists undertook a four-year retrospective reanalysis of ocean circulation at the Pioneer Coastal Array site. The system captures circulation features that characterize the inhomogeneous, rapidly evolving, and ephemeral submesoscale circulation.

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Shelfbreak Productivity Interdisciplinary Research

The continental shelfbreak of the Mid-Atlantic Bight supports a productive and diverse ecosystem, driven by primary production by phytoplankton. The Coastal Pioneer Array provided unprecedented spatial and temporal resolution of the frontal system, including a four-dimensional context to conduct a detailed study of frontal dynamics and plankton communities.

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Shelf Water Subduction and Cross-Shelf Exchange

In recent years, the Gulf Stream in the Northwest Atlantic has become increasingly unstable and is shedding more warm core rings in the Slope Sea.The Coastal Pioneer Array at the Mid-Atlantic Bight shelf edge identified a form of offshore transport of water for the first time, supporting an ocean model to study the dynamics of the shelf-water offshore transport.

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Forecasting Hypoxia to Support the Dungeness Crab Fishery

Hypoxia is regularly experienced in Washington and Oregon waters and has been linked to mass mortality events of hypoxia-intolerant species, including the valuable Dungeness crab. The Coastal Endurance Array is aiding the development of a hypoxia forecasting system in this region.

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Identifying Impacts of Ocean Acidification and Hypoxia

Ocean acidification has emerged as a leading threat to marine ecosystems, and the fisheries and shellfish growers that depend on a productive and vibrant ocean. The Coastal Endurance Array in the Pacific Northwest array is situated in an epicenter for early impacts from the co-occurrence of ocean acidification and hypoxia.

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Drivers of Ocean Overturning Circulation Revealed

rminger Surface Mooring data were used to identify a new mechanism by which the atmosphere controls ocean heat loss leading to dense water formation. The results are particularly important as the connection between air-sea exchanges and the ocean circulation is still poorly understood, hindering attempts to understand the climate change induced slowdown of the Atlantic circulation.

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Southern Ocean Air-Sea Interaction

The Southern Ocean is an important region in the global ocean uptake of heat and carbon. Data collected by OOI’s Global Southern Ocean Surface Mooring helped identify extreme heat loss events driven by cold Antarctic winds in driving the seasonal mixed layer deepening in the region and dramatic year-to-year variations.

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