scholarly journals III.—Polychæta of the family Nereidæ, collected by the Scottish National Antarctic Expedition (1902–1904).

1914 ◽  
Vol 50 (1) ◽  
pp. 41-48 ◽  
Author(s):  
L. N. G. Ramsay
Keyword(s):  
Deep Water ◽  
Falkland Islands ◽  
The South ◽  
Orkney Islands ◽  
The Family ◽  
Antarctic Expedition ◽  
South Orkney Islands ◽  
Chief Interest ◽  
The Antarctic

The collection of Nereidæ brought home by the Scotia proves to be of considerable interest. As other expeditions have indicated, the family is but poorly represented in the antarctic or sub-antarctic regions; and although a large number of specimens were collected at the South Orkney Islands, these have all proved to belong to one species, N. kerguelensis M'Int. No nereids were obtained at any of the deep-water stations farther south—the family being decidedly littoral in its range.The chief interest, however, lies in the material collected so assiduously throughout the vessel's wanderings. Six other species were obtained, including one from the Falkland Islands, hitherto undescribed.

Antarctic Ecosystems The freshwater lakes of Signy Island and their fauna

1967 ◽  
Vol 252 (777) ◽  
pp. 347-362 ◽  
Keyword(s):  
Summer Season ◽  
Falkland Islands ◽  
Freshwater Lakes ◽  
Orkney Islands ◽  
Signy Island ◽  
Antarctic Expedition ◽  
South Orkney Islands ◽  
The Antarctic ◽  
Taxonomic Evaluation ◽  
British Sector

Prior to 1962 work on freshwater within the British Sector of the Antarctic had been confined to the collection of specimens and their subsequent taxonomic evaluation. Collections were made by such expeditions as the Scottish National Antarctic Expedition 1902- 04, the various Discover y Investigations in this region 1925-37, the British Graham Land Expedition 1934-37 and the Falkland Islands Dependencies Survey 1945-62. During the 1961/1962 summer season an ecological investigation of the freshwater lakes of Signy Island, South Orkney Islands, was started. This paper is an interim report on that work.

Antarctic Place-names given by the Scottish National Antarctic Expedition, 1902–04

Polar Record ◽  
1943 ◽  
Vol 4 (26) ◽  
pp. 61-62 ◽  
Author(s):  
R. N. Rudmose Brown
Keyword(s):  
Place Names ◽  
The South ◽  
Orkney Islands ◽  
Antarctic Expedition ◽  
South Orkney Islands ◽  
Antarctic Continent ◽  
Scientific Results ◽  
The Antarctic

The following place-names in the South Orkney Islands and the Antarctic Continent were proposed by Dr W. S. Bruce; they were first published in the maps accompanying his paper in the Scottish Geographical Magazine for June 1905, and in the Reports on the Scientific Results of the Voyage of S.Y. Scotia, 1902–04 (Edinburgh, 1907–).

scholarly journals Variability of the Antarctic Slope Current System in the Northwestern Weddell Sea

2017 ◽  
Vol 47 (12) ◽  
pp. 2977-2997 ◽  
Author(s):  
Marina Azaneu ◽  
Karen J. Heywood ◽  
Bastien Y. Queste ◽  
Andrew F. Thompson
Keyword(s):  
Current System ◽  
Water Layer ◽  
Bottom Layer ◽  
Weddell Sea ◽  
The South ◽  
Orkney Islands ◽  
Dense Water ◽  
South Orkney Islands ◽  
Antarctic Slope Current ◽  
The Antarctic

AbstractThe dense water outflow from the Antarctic continental shelf is closely associated with the strength and position of the Antarctic Slope Front. This study explores the short-term and spatial variability of the Antarctic Slope Front system and the mechanisms that regulate cross-slope exchange using highly temporally and spatially resolved measurements from three ocean gliders deployed in 2012. The 22 sections along the eastern Antarctic Peninsula and west of the South Orkney Islands are grouped regionally and composited by isobaths. There is consistency in the front position around the Powell Basin, varying mostly between the 500- and 800-m isobaths. In most of the study area the flow is bottom intensified. The along-slope transport of the Antarctic Slope Current (upper 1000 m) varies between 0.2 and 5.9 Sv (1 Sv ≡ 106 m3 s−1) and does not exhibit a regional pattern. The magnitude of the velocity field shows substantial variability, up to twice its mean value. Higher eddy kinetic energy (0.003 m2 s−2) is observed in sections with dense water, possibly because of baroclinic instabilities in the bottom layer. Distributions of potential vorticity show an increase toward the shelf along isopycnals and also in the dense water layer. Glider sections located west of the South Orkney Islands indicate a northward direction of the flow associated with the Weddell Front, which differs from previous estimates of the mean circulation. This study provides some of the first observational confirmation of the high-frequency variability associated with an active eddy field that has been suggested by recent numerical simulations in this region.

scholarly journals XXIX.—Turbellaria of the Scottish National Antarctic Expedition.

1907 ◽  
Vol 45 (3) ◽  
pp. 819-827 ◽  
Author(s):  
J. F. Gemmill ◽  
R. T. Leiper
Keyword(s):  
South America ◽  
Orkney Islands ◽  
Kerguelen Island ◽  
Antarctic Expedition ◽  
South Orkney Islands ◽  
The Antarctic

There were seven Turbellaria in the material handed to us by Mr W. S. Bruce, all obtained in April 1903 from Scotia Bay, South Orkney Islands (9–10 fms., Station 325, lat. 60° 44′ S., long. 44° 51′ W.). Their occurrence is interesting, as, although Studer (Ueber Seethiere aus dem Antarktischen Meere, 1876) mentions, without adequately describing it, a Eurylepta from Kerguelen Island, there are no definite records, so far as we have been able to ascertain, of Turbellarian species from nearer the Antarctic than the coasts of South America.

The diet of the Antarctic fur seal Arctocephalus gazella at the South Orkney Islands in ten consecutive years

Polar Biology ◽  
2016 ◽  
Vol 39 (7) ◽  
pp. 1197-1206 ◽  
Author(s):  
Ricardo Casaux ◽  
Mariana Juares ◽  
Alejandro Carlini ◽  
Aldo Corbalán
Keyword(s):  
Arctocephalus Gazella ◽  
The South ◽  
Antarctic Fur Seal ◽  
Orkney Islands ◽  
Fur Seal ◽  
South Orkney Islands ◽  
The Antarctic

A new macroflora from the South Orkney Islands, Antarctica: evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate

2000 ◽  
Vol 12 (2) ◽  
pp. 185-195 ◽  
Author(s):  
David J. Cantrill
Keyword(s):  
Antarctic Peninsula ◽  
Middle Jurassic ◽  
Initial Phase ◽  
The South ◽  
Orkney Islands ◽  
Continental Deposits ◽  
Geological Evolution ◽  
South Orkney Islands ◽  
Break Up ◽  
The Antarctic

A macroflora from John Peaks, Powell Island, contains Sagenopteris nilssoniana, Cladophlebis oblonga, Brachyphyllum sp., Elatocladus confertus, and Sphenopteris sp. The macroflora is best correlated with the Botany Bay Group flora, suggesting an Early to Middle Jurassic age for the Powell Island Conglomerate. This age supports new interpretations for the geological evolution of the Antarctic Peninsula that suggest the initial phase of Gondwana break-up was manifested as small rift grabens with continental deposits.

The cryptostigmatid mite Halozetes belgicae (Michael) in the maritime Antarctic

1991 ◽  
Vol 3 (1) ◽  
pp. 53-59 ◽  
Author(s):  
L.B. Minto ◽  
G.J. Shepherd ◽  
M.B. Usher
Keyword(s):  
South Shetland Islands ◽  
Maritime Antarctic ◽  
The South ◽  
Macquarie Island ◽  
Shetland Islands ◽  
Orkney Islands ◽  
South Orkney Islands ◽  
South Sandwich Islands ◽  
The Antarctic ◽  
Morphometrical Study

Halozetes belgicae is distributed widely in the Subantarctic and maritime Antarctic, with subspecies described from Macquarie Island and the South Sandwich Islands. A morphometrical study, based largely on the development of the setae, indicates that the nominate subspecies is confined to the Antarctic Peninsula and its offshore islands (including the South Shetland Islands), whilst specimens from the South Orkney Islands are probably consubspecific with individuals on the South Sandwich Islands. In comparison with other studies of the Acari, the results strengthen the case for the recognition of a South Orkadian biogeographical zone.

scholarly journals Scottish National Antarctic Expedition. “Scotia” Collections. Collembola from the South Orkney Islands

1906 ◽  
Vol 26 (1) ◽  
pp. 473-483 ◽  
Author(s):  
George H. Carpenter ◽  
William Evans
Keyword(s):  
Present Writer ◽  
Tierra Del Fuego ◽  
The Arctic ◽  
Careful Study ◽  
Orkney Islands ◽  
Arctic Regions ◽  
Victoria Land ◽  
Antarctic Expedition ◽  
South Orkney Islands ◽  
The Antarctic

Our knowledge of Antarctic Aptera has been growing rapidly during the last few years, a number of species from remote southern regions having been described by Willem (1902) from the countries south of Patagonia explored by the Belgica, by Schaffer (1897) from Tierra del Fuego, by Enderlein (1903) from Kerguelen, and a single Isotoma by the present writer (1902) from South Victoria Land. We find in the Antarctic as in the Arctic regions that in our advance towards the most remote and inhospitable lands, where winged insects eease to be represented, the primitive Aptera are still found fairly numerous in species, and often multitudinous in individuals. A careful study of these small frail insects fully repays the naturalist, both on account of the interest of their structure and the light which their distribution throws on geographical problems.

scholarly journals Spatial Structure and Intra-Annual Variability of Weddell Sea Front based on the Data of NOAA OISST Reanalysis

2020 ◽  
Author(s):  
Yu. V. Artamonov ◽  
E. A. Skripaleva ◽  
N. V. Nikolsky ◽  
◽  
◽  
...  
Keyword(s):  
Spatial Structure ◽  
Antarctic Peninsula ◽  
Time Lag ◽  
Water Area ◽  
Weddell Sea ◽  
The South ◽  
Orkney Islands ◽  
Bransfield Strait ◽  
South Orkney Islands ◽  
The Antarctic

Based on the NOAA OISST reanalysis data, the spatial structure of the Weddell Sea Front in the climatic field of the sea surface temperature was analyzed and the seasonal variability of front’s characteristics was estimated. The spatial position of the frontal zone in the Weddell Sea was analyzed using distributions of the total horizontal temperature gradient. The characteristics of the front (the position of the gradients' extrema corresponding to the front, their magnitude and temperature on the front axis) were determined for each month on the profiles of meridional and zonal temperature gradients along meridians and parallels with a discreteness of 2.5° of longitude and 0.25° of latitude. It is shown that the interaction of Weddell Sea cold waters, which are transported by currents northward along the Antarctic Peninsula coasts, with the warmer waters of the eastern shelf of the Antarctic Peninsula and the Bransfield Strait surface water causes formation of two branches of the Weddell Sea Front. These branches round from a vast shelf at the Antarctic Peninsula tip and the Joinville archipelago the south and north and are traced further east along the boundaries of the bottom rise located approximately between 62.5S and 64.5S. To the south of the South Orkney Islands shelf, the two branches merge into one front, which follows to the east along the depth dump of the relative shallow between the South Orkney and South Sandwich Islands. In the seasonal cycle of the Weddell Sea Front intensity, a time lag was revealed of the front intensification period in the direction from west to east. In Bransfield Strait the front is most intense in February, between the Antarctic Peninsula tip and the South Orkney Islands – in March, east of the South Orkney Islands – in April. The branch of the Weddell Sea Front off the northeastern of the Antarctic Peninsula coasts intensifies in November – January, in the western part of the water area east of the James Ross and Snow Hill Islands – in January – February.

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