Abyssal Ocean Reveals Active Bottom Mixing
Researchers published in the journal Ocean Science report that the abyssal Pacific’s bottom mixed layer is highly variable, based on new trans-Pacific surface-to-seafloor measurements and two decades of repeat data. They found layer thicknesses ranging from under 100m to over 700m, driven by seafloor topography and tidal-wave interactions, with implications for climate models, sediment transport and high-seas management.
Key Points
- 1Finds bottom mixed layer varies from less than 100m to over 700m in abyssal Pacific regions
- 2Shows seafloor topography and tidal-wave interactions control mixing, altering heat and nutrient transport
- 3Impels climate modelers and policymakers to incorporate seabed mixing for better projections and management
Scoring Rationale
Robust, peer-reviewed abyssal observations reveal key mixing mechanisms, but sparse spatial sampling limits immediate global model parameterization.
Sources
Public references used for this report.
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