The genus Anonyx (Crustacea, Amphipoda) in the North Pacific and Arctic oceans: Anonyx compactus group

1989 ◽  
Vol 67 (8) ◽  
pp. 1945-1954 ◽  
Author(s):  
D. H. Steele
Keyword(s):  
North Atlantic ◽  
North Pacific ◽  
Pacific Region ◽  
North Atlantic Region ◽  
Atlantic Region ◽  
Normal Length ◽  
The North ◽  
North Pacific Region ◽  
The North Atlantic ◽  
The North Pacific

The Anonyx compactus group is characterized by the morphology of the inner ramus of the second uropod, which is of normal length and depth but is completely constricted distally and bears a long spine at the constriction. This group comprises eight species of which three, Anonyx attenuatus, Anonyx stappersi, and Anonyx stebbingi, are newly described. Anonyx stappersi was identified as Chironesimus debruyni by L. Stappers and A. stebbingi as A. ampulloides by T. R. R. Stebbing. Seven of these species are known from the North Pacific region, and three from the North Atlantic region, but none has a circumpolar distribution.

The genus Anonyx (Crustacea, Amphipoda) in the North Pacific and Arctic oceans: Anonyx laticoxae group

1986 ◽  
Vol 64 (11) ◽  
pp. 2603-2623 ◽  
Author(s):  
D. H. Steele
Keyword(s):  
New Species ◽  
North Atlantic ◽  
North Pacific ◽  
Pacific Region ◽  
North Atlantic Region ◽  
Atlantic Region ◽  
The North ◽  
North Pacific Region ◽  
The North Atlantic ◽  
The North Pacific

Thirteen species of the Anonyx laticoxae group (uropod 2 with the rami not broadened and with the inner ramus not constricted) are listed for the North Pacific region. Five new species, Anonyx schefferi, Anonyx stegnegeri, Anonyx gurjanovai, Anonyx hurleyi, and Anonyx petersoni are described. Anonyx japonicus is synonymized with Anonyx affinis, and Anonyx lebedi and A. orientalis are raised to full species. Eleven of these species are known only from the North Pacific region. Anonyx laticoxae and Anonyx affinis are the only two that are also found in the North Atlantic region.

scholarly journals Alcataenia longicervica sp. n. from murres, Uria lomvia (Linnaeus) and Uria aalge (Pontoppidan) in the North Pacific basin, with redescriptions of Alcataenia armillaris (Rudolphi, 1810) and Alcataenia meinertzhageni (Baer, 1956) (Cestoda: Dilepididae)

1984 ◽  
Vol 62 (10) ◽  
pp. 2044-2052 ◽  
Author(s):  
Eric P. Hoberg
Keyword(s):  
North Atlantic ◽  
North Pacific ◽  
Pacific Basin ◽  
North Atlantic Region ◽  
Uria Lomvia ◽  
Atlantic Region ◽  
The North ◽  
The Pacific ◽  
The North Pacific ◽  
North Pacific Basin

Alcataenia longicervica sp. n. (Cestoda: Dilepididae) is described from murres, Uria spp., in Alaska and other localities in the Pacific basin. From Alcataenia armillaris (Rudolphi, 1810), which it most closely resembles, A. longicervica is distinguished by larger size of organs (cirrus sac, vitelline gland, and seminal receptacle), greater number of testes, and extremely long neck. In specimens of A. longicervica there are 22–27 rostellar hooks distributed in two rows. Hooks in the anterior row measure 41–49 μm in length while those in the posterior are 38–48 μm. Two species of Alcataenia, A. armillaris and A. meinertzhageni (Baer, 1956), both characteristic cestodes of birds of the genus Uria Brisson, are redescribed from material from the North Pacific basin and are compared with descriptions of specimens from the North Atlantic region.

The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation

2020 ◽  
Vol 33 (6) ◽  
pp. 2111-2130
Author(s):  
Woo Geun Cheon ◽  
Jong-Seong Kug
Keyword(s):  
Ocean Circulation ◽  
North Atlantic ◽  
North Pacific ◽  
Global Ocean ◽  
The North ◽  
Westerly Winds ◽  
The North Atlantic ◽  
Global Ocean Circulation ◽  
The Antarctic ◽  
The North Pacific

AbstractIn the framework of a sea ice–ocean general circulation model coupled to an energy balance atmospheric model, an intensity oscillation of Southern Hemisphere (SH) westerly winds affects the global ocean circulation via not only the buoyancy-driven teleconnection (BDT) mode but also the Ekman-driven teleconnection (EDT) mode. The BDT mode is activated by the SH air–sea ice–ocean interactions such as polynyas and oceanic convection. The ensuing variation in the Antarctic meridional overturning circulation (MOC) that is indicative of the Antarctic Bottom Water (AABW) formation exerts a significant influence on the abyssal circulation of the globe, particularly the Pacific. This controls the bipolar seesaw balance between deep and bottom waters at the equator. The EDT mode controlled by northward Ekman transport under the oscillating SH westerly winds generates a signal that propagates northward along the upper ocean and passes through the equator. The variation in the western boundary current (WBC) is much stronger in the North Atlantic than in the North Pacific, which appears to be associated with the relatively strong and persistent Mindanao Current (i.e., the southward flowing WBC of the North Pacific tropical gyre). The North Atlantic Deep Water (NADW) formation is controlled by salt advected northward by the North Atlantic WBC.

They did not Live by Grass Alone: the Politics and Palaeoecology of Animal Fodder in the North Atlantic Region

1998 ◽  
Vol 1 (1) ◽  
pp. 41-54 ◽  
Author(s):  
Tom Amorosi ◽  
Paul C. Buckland ◽  
Kevin J. Edwards ◽  
Ingrid Mainland ◽  
Tom H. McGovern ◽  
...  
Keyword(s):  
North Atlantic ◽  
North Atlantic Region ◽  
Atlantic Region ◽  
The North ◽  
The North Atlantic

Satellite-Derived Tropical Cyclone Intensity in the North Pacific Ocean Using the Deviation-Angle Variance Technique

2014 ◽  
Vol 29 (3) ◽  
pp. 505-516 ◽  
Author(s):  
Elizabeth A. Ritchie ◽  
Kimberly M. Wood ◽  
Oscar G. Rodríguez-Herrera ◽  
Miguel F. Piñeros ◽  
J. Scott Tyo
Keyword(s):  
Tropical Cyclone ◽  
North Atlantic ◽  
North Pacific ◽  
Western North Pacific ◽  
North Pacific Ocean ◽  
Deviation Angle ◽  
Intensity Estimation ◽  
The North ◽  
The North Atlantic ◽  
The North Pacific

Abstract The deviation-angle variance technique (DAV-T), which was introduced in the North Atlantic basin for tropical cyclone (TC) intensity estimation, is adapted for use in the North Pacific Ocean using the “best-track center” application of the DAV. The adaptations include changes in preprocessing for different data sources [Geostationary Operational Environmental Satellite-East (GOES-E) in the Atlantic, stitched GOES-E–Geostationary Operational Environmental Satellite-West (GOES-W) in the eastern North Pacific, and the Multifunctional Transport Satellite (MTSAT) in the western North Pacific], and retraining the algorithm parameters for different basins. Over the 2007–11 period, DAV-T intensity estimation in the western North Pacific results in a root-mean-square intensity error (RMSE, as measured by the maximum sustained surface winds) of 14.3 kt (1 kt ≈ 0.51 m s−1) when compared to the Joint Typhoon Warning Center best track, utilizing all TCs to train and test the algorithm. The RMSE obtained when testing on an individual year and training with the remaining set lies between 12.9 and 15.1 kt. In the eastern North Pacific the DAV-T produces an RMSE of 13.4 kt utilizing all TCs in 2005–11 when compared with the National Hurricane Center best track. The RMSE for individual years lies between 9.4 and 16.9 kt. The complex environment in the western North Pacific led to an extension to the DAV-T that includes two different radii of computation, producing a parametric surface that relates TC axisymmetry to intensity. The overall RMSE is reduced by an average of 1.3 kt in the western North Pacific and 0.8 kt in the eastern North Pacific. These results for the North Pacific are comparable with previously reported results using the DAV for the North Atlantic basin.

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