Acoustic Doppler Current Profiler (ADCP) Deployment & Retrieval | Kuala Kerteh, Terengganu Malaysia | 3-18 June 2020

Acoustic Doppler Current Profiler (ADCP) Deployment & Retrieval Kuala Kerteh, Terengganu Malaysia 3-18 June 2020
Depth ~15m ADCP is a hydroacoustic current meter similar to a sonar, used to measure water current velocities over a depth range using the Doppler effect of sound waves scattered back from particles within the water column.

Abstract

While the sinking formation of Antarctic Bottom Water (AABW) is well understood, how this bottom water "returns home" through upwelling within ocean basins, particularly the Indo-Pacific, remains shrouded in uncertainty. In the 1960s, Munk’s classic "Abyssal Recipes" theory sought to explain these abyssal flows, yet later observations exposed two significant conflicts with real-world data. In 2016, Ferrari, McDougall, and colleagues proposed the "Towards a New Abyssal Recipe" framework, introducing bottom boundary layer (BBL) upwelling to address Munk’s inconsistencies. Drawing on recent evidence of a potential cooling trend in the deep ocean, this talk revisits these debates, offering a fresh interpretation of Munk’s discrepancies and proposing a new mechanism for abyssal upwelling in the Indo-Pacific. It contributes to the ongoing quest to unravel how bottom waters complete their global journey.

Presented by: Prof. Dr. HAN Lei
Affiliation: China-ASEAN College of Marine Science, Xiamen University, Malaysia
Address: Sepang, Selangor, Malaysia

 

 

 

 

 

 

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