Pathways of water between the Pacific and Indian oceans in the Indonesian seas

Gordon, Arnold L.; Fine, Rana A.

doi:10.1038/379146a0

Cited by 462 publications

(372 citation statements)

References 20 publications

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“…While the North Banda Sea communicates with the Maluku Sea and the North Pacific water masses through the Lifamatola strait, most of the South Equatorial Current (SEC) turns eastward to join the North Equatorial Countercurrent. A small fraction of the flow, however, makes it way to the Banda Sea, in agreement with salinity data, which point to the presence of South Pacific lower thermocline waters in the eastern basins [Gordon and Fine, 1996;Hautala et al, 1996].…”

Section: Introductionsupporting

confidence: 70%

“…[3] There is convincing evidence [e.g., Ffield and Gordon, 1992;Gordon and Fine, 1996] for the North Pacific origin of the waters following the western route including tritium and radiocarbon tracer data [e.g., Fine, 1985;Moore et al, 1997]. These waters are transported southward by the Mindanao current, one branch of which enters the Celebes Sea while the rest of it turns eastward into the North Equatorial Countercurrent.…”

Section: Introductionmentioning

confidence: 99%

“…[2] Pacific waters entering the Indonesian Archipelago follow two main routes [Gordon and Fine, 1996]. The western route, which is the predominant pathway, enters the Celebes Sea from the North Pacific and proceeds through the Makassar Strait toward the Flores Sea.…”

Section: Introductionmentioning

confidence: 99%

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Temporally integrated estimate of the Indonesian throughflow using tritium

Jean-Baptiste

Jenkins

Dutay

et al. 2004

Geophysical Research Letters

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[1] Because of the high interannual and seasonal variability, transports from the various methods used to estimate the Indonesian throughflow encompass a large range of values. Here, we estimate a temporally integrated transport for the throughflow from comparison of the tritium water column inventory on both sides of the throughflow. Our approach is based on the simple idea that tritium, with a radioactive decay half-life of 12.32 yr, is well suited to infer the transit time (and consequently the mass flow) of the waters through the Indonesian archipelago. We show that the tritium budget implies a flow of 8.6 ± 4 Sv, corresponding to a transit time of 10.5 yr. This result, which represents an average over seasons and several ENSO and non-ENSO periods, shows that repeated tritium measurements on both sides of the Indonesian Seas could provide a useful method for monitoring the long-term evolution of the throughflow.

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Section: Introductionsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

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Temporally integrated estimate of the Indonesian throughflow using tritium

Jean-Baptiste

Jenkins

Dutay

et al. 2004

Geophysical Research Letters

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“…On the other hand, the present results suggest that SEIR may not act as a corridor to the Pacific Ocean, as most of the southwestern Pacific vent fauna showed relatively low similarity to the CIR vent fauna, while relatively high similarity was observed between the CIR and the equatorial western Pacific vent faunas. The historical seafloor spreading (Heirtzler et al 1968) or Indonesian Throughflow (Gordon and Fine 1996) may be among the important factors influencing faunal connectivity between the CIR and western Pacific vent fields.…”

Section: Faunal Similarities With Other Biogeographical Regionsmentioning

confidence: 99%

Vent Fauna on the Central Indian Ridge

Watanabe

Beedessee

2014

Subseafloor Biosphere Linked to Hydrothermal Systems

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In deep-sea hydrothermal vent fields, faunal distribution is associated with the geochemical environments generated by hydrothermal vent activity. Hydrothermal vent fields on the Central Indian Ridge (CIR) are associated with vent fauna which is thought as a mixture of Atlantic and Pacific and are discretely distributed along the ridge axis of more than 1,000 km apart. In this chapter, faunal distribution in hydrothermal vent fields on the CIR is summarized at the intra-and inter-field levels. The species composition of the vent fauna in the four vent fields hitherto known is reviewed and updated, and faunal resemblance among the four vent fields of the CIR appears to reflect the number of species recorded, indicating that faunal surveys are not sufficient in describing the whole vent fauna on the CIR. All the genetic studies of the CIR vent fauna have indicated a high genetic connectivity among the local populations, despite the many potential dispersal barriers existing between the vent fields. On the basis of the spatial distribution of vent species in a vent field, typical vent fields on the CIR were classified into six zones, of which the central two zones are often covered by Rimicaris swarms in the Kairei and Edmond fields. The close relationship between vent fauna from the CIR and the western Pacific, compared to those from other regions, is highlighted. Knowledge of the Indian Ocean vent fauna is limited, and further quantitative information on the biodiversity of vent fauna will provide clues to the formation of biogeographical regions and the dispersal of vent fauna among deep-sea hydrothermal vent fields. Keywords

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“…There are three major surface water currents in the study area: 1) north equatorial current (NEC), 2) equatorial counter current (ECC), and 3) south equatorial current (SEC). West-bound equatorial currents (NEC and SEC) are the major forces behind the piling up of warm water in the WPWP (Gordon and Fine, 1996). Moreover, an eastbound subsurface water current, equatorial undercurrent (EUC), is also important from the viewpoint of affecting the sinking particle flux along the equator (Hansell et al, 1997).…”

Section: Study Areamentioning

confidence: 99%