scholarly journals A Recent Shift in the Monsoon Centers Associated with the Tropospheric Biennial Oscillation

2017 ◽  
Vol 31 (1) ◽  
pp. 325-340 ◽  
Author(s):  
Lei Wang ◽  
Jin-Yi Yu
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
Summer Monsoon ◽  
Indian Monsoon ◽  
Tropical Atlantic ◽  
Tropospheric Biennial Oscillation ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Biennial Oscillation ◽  
Australian Summer

Abstract The tropospheric biennial oscillation (TBO) is conventionally considered to involve transitions between the Indian and Australian summer monsoons and the interactions between these two monsoons and the underlying Indo-Pacific Oceans. Here it is shown that, since the early 1990s, the TBO has evolved to mainly involve the transitions between the western North Pacific (WNP) and Australian monsoons. In this framework, the WNP monsoon replaces the Indian monsoon as the active Northern Hemisphere TBO monsoon center during recent decades. This change is found to be caused by stronger Pacific–Atlantic coupling and an increased influence of the tropical Atlantic Ocean on the Indian and WNP monsoons. The increased Atlantic Ocean influence damps the Pacific Ocean influence on the Indian summer monsoon (leading to a decrease in its variability) but amplifies the Pacific Ocean influence on the WNP summer monsoon (leading to an increase in its variability). These results suggest that the Pacific–Atlantic interactions have become more important to the TBO dynamics during recent decades.

Taxonomy of the genus Thyonella (Holothuroidea: Dendrochirotida), with mention of the first record of T. sabanillaensis from the southwestern Atlantic Ocean

Zootaxa ◽  
2018 ◽  
Vol 4527 (1) ◽  
pp. 75
Author(s):  
LUCIANA MARTINS
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
First Record ◽  
Morphological Characters ◽  
Sem Analysis ◽  
Southwestern Atlantic ◽  
Internal Morphology ◽  
The Pacific ◽  
Southwestern Atlantic Ocean ◽  
The Pacific Ocean

The genus Thyonella currently comprises four species which occur in the Atlantic and Pacific Oceans. Thyonella mexicana is the only species known to occur in the Pacific Ocean. The main morphological characters used to distinguish Thyonella species are their dermal ossicles. Since the differences among these characters are subtle, this contribution provides a detailed description and comparison of the ossicle assemblage of the concerned taxa. In addition, description of the internal morphology of three of the concerned species is also provided. Further, this study reports on the first record of Thyonella sabanillaensis for the Southwestern Atlantic. A worldwide revision of the distributional records of Thyonella species is presented and their taxonomy is discussed, concluding that some traditional taxonomic characters should be used cautiously. A brief discussion about the importance of SEM analysis is also provided. 

1755, Lisbon

Tsunami ◽  
2021 ◽  
pp. 151-160
Author(s):  
James Goff ◽  
Walter Dudley
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
North Africa ◽  
Tsunami Waves ◽  
The Pacific ◽  
The Pacific Ocean ◽  
The Caribbean ◽  
The City

Most Europeans do not worry about tsunami waves as much as those who live around the rim of the Pacific Ocean, but they should. On All Saint’s Day, 1755, a huge earthquake struck Lisbon, Portugal, causing most stone buildings to collapse, including churches, monasteries, nunneries, and chapels, trapping the faithful inside the ruins, which votive candles quickly turned into burning pyres. Voltaire would write, “The sole consolation is that the Jesuit Inquisitors of Lisbon will have disappeared.” To add to the irony, among the few buildings safely left standing following the disaster were the lightly constructed wooden bordellos of the city. Most of Lisbon’s prostitutes but few of her nuns survived. Tsunami waves would not only kill thousands around Lisbon’s harbor but also travel south to Spain and North Africa, north to Ireland and Wales, and across the Atlantic Ocean to the Caribbean, flooding the streets of Barbados.

scholarly journals GEOSECS Pacific Radiocarbon

Radiocarbon ◽  
1980 ◽  
Vol 22 (1) ◽  
pp. 25-53 ◽  
Author(s):  
H G Östlund ◽  
Minze Stuiver
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
Preceding Paper ◽  
Section Study ◽  
The Pacific ◽  
The Pacific Ocean

In the preceding paper (Stuiver and Östlund, this issue), some of the general features of the Geochemical Ocean Section Study (GEOSECS) were outlined and results were listed for the Atlantic Ocean. This paper will deal with the second major cruise, which was described by Craig and Turekian (1976), covering the Pacific Ocean in 1973-74 (cf fig 1).

scholarly journals Diazotrophic Diversity and Distribution in the Tropical and Subtropical Atlantic Ocean

2005 ◽  
Vol 71 (12) ◽  
pp. 7910-7919 ◽  
Author(s):  
Rebecca J. Langlois ◽  
Julie LaRoche ◽  
Philipp A. Raab
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
Heterotrophic Bacteria ◽  
Pcr Amplification ◽  
Environmental Dna ◽  
Degenerate Primers ◽  
Community Shift ◽  
The Pacific ◽  
Group A ◽  
The Pacific Ocean

ABSTRACT To understand the structure of marine diazotrophic communities in the tropical and subtropical Atlantic Ocean, the molecular diversity of the nifH gene was studied by nested PCR amplification using degenerate primers, followed by cloning and sequencing. Sequences of nifH genes were amplified from environmental DNA samples collected during three cruises (November-December 2000, March 2002, and October-November 2002) covering an area between 0 to 28.3°N and 56.6 to 18.5°W. A total of 170 unique sequences were recovered from 18 stations and 23 depths. Samples from the November-December 2000 cruise contained both unicellular and filamentous cyanobacterial nifH phylotypes, as well as γ-proteobacterial and cluster III sequences, so far only reported in the Pacific Ocean. In contrast, samples from the March 2002 cruise contained only phylotypes related to the uncultured group A unicellular cyanobacteria. The October-November 2002 cruise contained both filamentous and unicellular cyanobacterial and γ-proteobacterial sequences. Several sequences were identical at the nucleotide level to previously described environmental sequences from the Pacific Ocean, including group A sequences. The data suggest a community shift from filamentous cyanobacteria in surface waters to unicellular cyanobacteria and/or heterotrophic bacteria in deeper waters. With one exception, filamentous cyanobacterial nifH sequences were present within temperatures ranging between 26.5 and 30°C and where nitrate was undetectable. In contrast, nonfilamentous nifH sequences were found throughout a broader temperature range, 15 to 30°C, more often in waters with temperature of <26°C, and were sometimes recovered from waters with detectable nitrate concentrations.

Description of three new species of Bradyidius (Copepoda: Calanoida), the new aetideids from the deep Pacific Ocean, with notes on the genera Bradyidius and Aetideopsis

Zootaxa ◽  
2021 ◽  
Vol 5004 (2) ◽  
pp. 343-369
Author(s):  
ELENA L. MARKHASEVA ◽  
JASMIN RENZ
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
World Ocean ◽  
Weddell Sea ◽  
Lateral Spine ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Three New Species ◽  
Argentine Basin ◽  
Exopod Segment

Three new aetideid species, Bradyidius abyssalis sp. nov., Bradyidius parabyssalis sp. nov., and B. kurilokamchaticus sp. nov. are described from female specimens collected near the seafloor in the abyss of the Pacific and Atlantic Oceans. Specimens of Bradyidius parabyssalis sp. nov. were obtained in both the Atlantic and Pacific Oceans (Argentine Basin, area of the Meteor Seamount and the Kurile-Kamchatka Trench). Bradyidius abyssalis sp. nov. was found only in the Atlantic Ocean, (Brazil and Guinea Basins and area of the Meteor Seamount) and Bradyidius kurilokamchaticus sp. nov. was recorded from the Kurile-Kamchatka Trench of the Pacific Ocean. Three new herein described Bradyidius species constitute the first documented records of the genus from the abyss of the World Ocean. In addition, three Bradyidius species from the Weddell Sea, the Atlantic Ocean and the Kurile-Kamchatka Trench, are briefly described without biological names due to their bad condition. Bradyidius parabyssalis sp. nov. and B. abyssalis sp. nov. are distinguished from all known congeners by the presence of 3 setae at the basis of the mandible and morphological details of the prosome posterior corners and P1. They show close resemblance to each other but differ in body size, rostrum structure, P4 coxa armament and length of the setae of the antennule ancestral segment I and the mandible basis. Bradyidius kurilokamchaticus sp. nov. shares with B. curtus Markhaseva, 1993, B. pacificus (Brodsky, 1950) and B. arnoldi Fleminger, 1957 a rostrum with non-divergent or parallel points, but differs from these species in the size, the well developed lateral spine on exopod segment 1, in the number of setae at the antenna exopod segment 1 and some morphological details of the prosome posterior corners. Characters that define the genus Bradyidius Giesbrecht, 1897 from Aetideopsis Sars, 1903, i.e. the shape of lateral spines of P1exopod segments 1 and 2; the endopod of P2 segmentation and the setation of the antennule ancestral segments XII, XV and XVII are discussed.

DISTRIBUTION OF ALASKA POLLOCK (GADUS CHALCOGRAMMUS) IN NORTHERN PACIFIC OCEAN: A RESULT OF INFLUENCE OF ECOLOGICAL FACTORS DURING EARLY DEVELOPMENT

2021 ◽  
pp. 73-88
Author(s):  
S.S. Grigoryev ◽  
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
Gadus Morhua ◽  
Atlantic Cod ◽  
Ecological Factors ◽  
Wide Distribution ◽  
Early Ontogenesis ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Northern Pacific

The hypothesis of invasion of Alaska pollock (Gadus chalcogrammus) to the Northern Pacific Ocean during the Bering Strait opening is discussed. Alaska pollock, a fish from the family Gadidae, is the most widespread and abundant commercial species in northern part of the Pacific Ocean. It is considered that the northern part of the Atlantic Ocean was the center of formation of Gadids in the Northern hemisphere. Species Gadus morhua and G. chalcogrammus differ on their features of early ontogenesis and requirements to environment conditions. Life history of the Atlantic cod G. morhua depends on the systems of warm currents in the northern part of the Atlantic Ocean. Unlike Northern Atlantic, all space of northwest part of the Pacific Ocean is occupied by the water of subarctic structure mass. The species G. chalcogrammus occurs more deep-water, differ by benthonic spawning (from 100 to 500 m of bottom depth) and embryonic development at lower (about 0ºC), even negative, water temperature at surface. During their development, the eggs drift under the influence of cold currents. Suitability of early ontogenesis of Alaska pollock to severe conditions promoted its survival and a wide distribution in northern part of the Pacific Ocean during evolution.

First record of the dinoflagellate Metadinophysis sinensis (Dinophysales, Dinophyceae) in the Atlantic Ocean

Phytotaxa ◽  
2019 ◽  
Vol 420 (1) ◽  
pp. 79-83
Author(s):  
HELEN MICHELLE DE JESUS AFFE ◽  
JOSÉ MARCOS DE CASTRO NUNES ◽  
LUIS ANTÔNIO DE OLIVEIRA PROENÇA ◽  
RENATA STOCK FONSECA ◽  
MARIÂNGELA MENEZES
Keyword(s):  
Atlantic Ocean ◽  
Coastal Waters ◽  
New Caledonia ◽  
First Record ◽  
Northeastern Brazil ◽  
Tropical Atlantic ◽  
Coastal Systems ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Made In

The genus Metadinophysis was proposed by Nie & Wang (1941) based on their description of the new species Metadinophysis sinensis Nie & Wang, from collections in Ching-lan Bay, Hainan Province, China. In addition to the Pacific Ocean, coastal waters of Japan, Thailand, and Vietnam, the genus was recorded for the southern coast of Myanmar (Su-Myat et al. 2012) and more recently in New Caledonia (Chomérat 2016).  The present study constitutes the first record of Metadinophysis sinensis for the tropical Atlantic Ocean, from collections made in five coastal systems located in the coast of Bahia (13°01’30” S and 038°34’40” W, 13°52’44” S and 038°57’58” W), northeastern Brazil (Fig. 1).

scholarly journals The occurrence of Callinectes arcuatus ordway, 1863 (Crustacea, Decapoda, Portunidae) in Bahia, Brazil

1987 ◽  
Vol 4 (1) ◽  
pp. 59-62
Author(s):  
Edilson Pires de Gouvêa
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
Galapagos Islands ◽  
Brazilian Coast ◽  
Galápagos Islands ◽  
The Pacific ◽  
First Occurrence ◽  
The Pacific Ocean

During the study of the Carcinofauna of the Bahian Coast, some Brachyura Portunidae were found. Some of these animals were Callinectes arcuatus Ordway, 1863 which has its distribution restricted to the Pacific Ocean, from California to Peru and the Galapagos Islands. This is the first occurrence of this species reported from the Atlantic Ocean and the Brazilian Coast (Bahia, 38º50'Wand 12º50'S).

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