scholarly journals The Manihiki Plateau-A multistage volcanic emplacement history

2015 ◽  
Vol 16 (8) ◽  
pp. 2480-2498 ◽  
Author(s):  
Ricarda Pietsch ◽  
Gabriele Uenzelmann-Neben
Keyword(s):  
Manihiki Plateau

scholarly journals Post-Eocene intensification of deep-water circulation in the central South Pacific: Micropalaeontological clues from dredged sites along the eastern Manihiki Plateau margin

Terra Nova ◽  
2018 ◽  
Vol 31 (1) ◽  
pp. 28-38
Author(s):  
Atsushi Ando ◽  
Junichiro Kuroda ◽  
Reinhard Werner ◽  
Kaj Hoernle ◽  
Brian T. Huber
Keyword(s):  
Deep Water ◽  
South Pacific ◽  
Water Circulation ◽  
Central South ◽  
Manihiki Plateau

New evidence for the production of EM-type ocean island basalts and large volumes of volcaniclastites during the early history of the Manihiki Plateau

1995 ◽  
Vol 122 (3) ◽  
pp. 181-205 ◽  
Author(s):  
Helmut Beiersdorf ◽  
Wolfgang Bach ◽  
Robert Duncan ◽  
Joerg Erzinger ◽  
Wolfgang Weiss
Keyword(s):  
Early History ◽  
Ocean Island ◽  
Ocean Island Basalts ◽  
History Of ◽  
New Evidence ◽  
Manihiki Plateau

The Manihiki Plateau

1966 ◽  
Vol 13 (3) ◽  
pp. 445-458 ◽  
Author(s):  
Bruce C. Heezen ◽  
Bill Glass ◽  
H.W. Menard
Keyword(s):  
Manihiki Plateau

scholarly journals Pacific Abyssal Transport and Mixing: Through the Samoan Passage versus around the Manihiki Plateau

2019 ◽  
Vol 49 (6) ◽  
pp. 1577-1592 ◽  
Author(s):  
Larry J. Pratt ◽  
Gunnar Voet ◽  
Astrid Pacini ◽  
Shuwen Tan ◽  
Matthew H. Alford ◽  
...  
Keyword(s):  
North Pacific ◽  
Strong Mixing ◽  
Hydraulic Jumps ◽  
Bypass Flow ◽  
Frictional Drag ◽  
The North ◽  
Abyssal Circulation ◽  
Transport And Mixing ◽  
The North Pacific ◽  
Manihiki Plateau

AbstractThe main source feeding the abyssal circulation of the North Pacific is the deep, northward flow of 5–6 Sverdrups (Sv; 1 Sv ≡ 106 m3 s−1) through the Samoan Passage. A recent field campaign has shown that this flow is hydraulically controlled and that it experiences hydraulic jumps accompanied by strong mixing and dissipation concentrated near several deep sills. By our estimates, the diapycnal density flux associated with this mixing is considerably larger than the diapycnal flux across a typical isopycnal surface extending over the abyssal North Pacific. According to historical hydrographic observations, a second source of abyssal water for the North Pacific is 2.3–2.8 Sv of the dense flow that is diverted around the Manihiki Plateau to the east, bypassing the Samoan Passage. This bypass flow is not confined to a channel and is therefore less likely to experience the strong mixing that is associated with hydraulic transitions. The partitioning of flux between the two branches of the deep flow could therefore be relevant to the distribution of Pacific abyssal mixing. To gain insight into the factors that control the partitioning between these two branches, we develop an abyssal and equator-proximal extension of the “island rule.” Novel features include provisions for the presence of hydraulic jumps as well as identification of an appropriate integration circuit for an abyssal layer to the east of the island. Evaluation of the corresponding circulation integral leads to a prediction of 0.4–2.4 Sv of bypass flow. The circulation integral clearly identifies dissipation and frictional drag effects within the Samoan Passage as crucial elements in partitioning the flow.

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