The Flow of Water into the Deep Sea Basins of the Western South Pacific Ocean

1961 ◽  
Vol 12 (1) ◽  
pp. 1 ◽  
Author(s):  
K Wyrtki
Keyword(s):  
Pacific Ocean ◽  
Deep Sea ◽  
New Caledonia ◽  
Potential Temperature ◽  
South Pacific ◽  
Central Pacific ◽  
South Pacific Ocean ◽  
Coral Sea ◽  
New Hebrides ◽  
Bottom Waters

The hydrographic conditions in the deep sea basins of the western South Pacific Ocean are analysed using relations between potential temperature and salinity, based on observations made from H.M.A.S. Gascoyne in 1960. It is shown that the bottom waters in the Coral Sea Basin and in the Solomon Basin are both characterized by a comparatively high salinity and that they come from the East Australian Basin. The bottom waters in the New Hebrides Basin, the New Caledonia Trough, and the Fiji Basin come from the central Pacific Basin. The water in the New Hebrides Basin and that in the New Caledonia Trough both have a slight admixture of water of higher salinity which has escaped over the ridges on the east sides of the Coral Sea Basin and the Solomon Basin. The Coral Sea Basin and the Solomon Basin considered as a unit is an example, probably the unique case, of . the inflow into a basin occurring at a higher level than the outflow. The sill depths of the different basins are determined by using potential temperature characteristics. The water exchange of the Coral Sea Basin is discussed theoretically. The upward velocity at depths between 3000 and 4000 m is of the order of 1.5 × 10-5 cm/sec and the rate of inflow 0.04 million m3/sec.

Some trichinelloid nematodes from marine fishes off New Caledonia, including description of Pseudocapillaria novaecaledoniensis sp. nov. (Capillariidae)

2010 ◽  
Vol 55 (1) ◽  
Author(s):  
František Moravec ◽  
Jean-Lou Justine
Keyword(s):  
New Species ◽  
Deep Sea ◽  
New Caledonia ◽  
South Pacific ◽  
Marine Fishes ◽  
Cuticular Membrane ◽  
South Pacific Ocean ◽  
Different Types ◽  
First Time ◽  
A New Species

AbstractExaminations of materials of trichinelloid nematodes recently collected from the digestive tract of marine fishes off New Caledonia, South Pacific, revealed the presence of several species of the families Capillariidae and Trichosomoididae, including capillariids Pseudocapillaria novaecaledoniensis sp. nov. from the deep-sea Pristipomoides argyrogrammicus (Valenciennes) (Lutjanidae) and Pseudocapillaria echenei (Parukhin, 1967) from Echeneis naucrates Linnaeus (Echeneidae), and the trichosomoidid Huffmanela sp. (female) from Bodianus perditio (Quoy et Gaimard) (Labridae). P. novaecaledoniensis is characterized mainly by the structure and length (318–321 µm) of spicule and the presence of a dorsal cuticular membrane interconnecting both ventrolateral caudal lobes in the male (subgenus Ichthyocapillaria Moravec, 1982). The previously poorly known P. echenei is redescribed and recorded for the first time from the South Pacific Ocean. In addition, five morphologically different types of capillariid females without generic identification, designated as Capillariidae gen. spp. 1–5, each of them probably representing a new species, were recorded from Fistularia commersonii Rüppell (Fistulariidae), Synodus dermatogenys Fowler (Synodontidae), Carangoides oblongus (Cuvier) (Carangidae), Diagramma pictum (Thunberg) (Haemulidae) and Stegostoma fasciatum (Hermann) (Stegostomidae), respectively. Capillaria decapteri is transferred to Pseudocapillaria Mendonça, 1963 as P. decapteri (Luo, 2001) comb. nov.

Dissolved inorganic Radiocarbon content of the Western Coral sea: Implications for Intermediate and Deep Water Circulation

Radiocarbon ◽  
2019 ◽  
Vol 61 (6) ◽  
pp. 1685-1696 ◽  
Author(s):  
Aymeric PM Servettaz ◽  
Yusuke Yokoyama ◽  
Shoko Hirabayashi ◽  
Markus Kienast ◽  
Yosuke Miyairi ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Deep Water ◽  
South Pacific ◽  
Intermediate Water ◽  
The South ◽  
Central Pacific ◽  
South Pacific Ocean ◽  
Deep Waters ◽  
Coral Sea ◽  
South Pacific Gyre

ABSTRACTThe South Pacific Ocean contributes to the global carbon cycle by exchanging CO2 between the atmosphere and intermediate to deep water masses. The path of the Antarctic Intermediate Water (AAIW) in the South Pacific gyre has been inferred from salinity, oxygen, and nutrient measurements, but radiocarbon (14C) measurements—a direct tracer of the carbon cycle—remain sparse. Here, we present the first radiocarbon profiles in the western Coral Sea and compare our measurements with South Pacific stations from GLODAPv2, a database of ocean hydrochemistry. Surface and subsurface waters in the Coral Sea cannot be attributed to a single source based on their Δ14C signatures, and we observe a penetration of bomb-produced 14C. AAIW in the western Coral Sea shows Δ14C values comparable to those in the South Pacific gyre, consistent with circulation of AAIW in the lower part of the southern equatorial current. The deep waters of the western Coral Sea have significantly higher 14C than the South Pacific at the same isopycnal, consistent with a northward intrusion of Circumpolar Deep Water from the Tasman Sea, along with a westward influx of deep waters from the Central Pacific. In accordance with silicate concentrations published previously, this shows the dual origin of deep waters in the Coral Sea.

Seven new species of Grania (Annelida: Clitellata: Enchytraeidae) from New Caledonia, South Pacific Ocean

Zootaxa ◽  
2007 ◽  
Vol 1426 (1) ◽  
pp. 27-50 ◽  
Author(s):  
PIERRE DE WIT ◽  
CHRISTER Erseus
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
New Caledonia ◽  
South Pacific ◽  
Phylogenetic Affinity ◽  
South Pacific Ocean ◽  
Surrounding Areas

In meiofauna of the intertidal and subtidal zones (to 20 m depth) of New Caledonia seven species of the marine enchytraeid genus Grania were found, all of which were previously undescribed: G. novacaledonia sp.n., G. cinctura sp. n., G. galbina sp. n., G. curta sp. n., G. fustata sp. n., G. papillata sp. n. and G. fiscellata sp. n. On the basis of morphology, these new species seem to have a phylogenetic affinity to congeners in Australia and possibly Antarctica, although little is known about the enchytraeid fauna of the surrounding areas.

Sign in / Sign up

Export Citation Format

Share Document