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Physical oceanography of the Caroline M4 seamount in the tropical western pacific ocean in summer 2017

Journal of oceanology and Limnology 2021年第5期39卷 1634-1650页

作者： Xingyu SHI Zhenyan WANG Haijun HUANG CAS Key Laboratory of Marine Geology and Environment Institute ofOceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory forMarine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China Center for ocean Mega-Science Chinese Academy of SciencesQingdao266071China

Physical oceanography plays an important role in the formation of submarine sediments,and the distribution of nutriments and biocenoses in *** M4 seamount is located in the Caroline Island Ridge of the western pacific *** physical properties around M4 seamount are preliminarily analyzed based on the in-situ data obtained in summer 2017 in Caroline M4 seamount and open-sourced *** found that the water in the upper 200 m is controlled by the westward North Equatorial Current(NEC),while the water between 300-1000 m is dominated by the eastward North Equatorial Undercurrent(NEUC).The current direction fluctuates significantly below 300 m at upstream *** the same depth of the lee sides,the current direction changes with the distance from *** are likely caused by the obstacle of M4 *** calculation results show that there is an anticyclonic cap above M4 seamount caused by tidal *** currents in M4 seamount are squeezed by the topography and amplified,and the amplified tidal currents play a dominant role in M4 ***,the circulation system generated by the interaction of the amplified tidal current and M4 seamount drives the upward/downward movement of the ***,the thickness of the surface turbulent layer is changed with the tidal ***,high turbulent diffusivities are found in the bottom of M4 seamount,and these are most likely attributed to the turbulent mixing induced by the mutual effect between semidiurnal tidal currents and steep *** article of physical oceanography provides scientific basis for further analysis of the distribution of biological community and deposition mechanism in M4 seamount.

关键词： Caroline seamount tropical western pacific ocean currents water masses tides turbulent diffusivities

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Observation of physical oceanography at the Y3 seamount (Yap Arc) in winter 2014

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Journal of oceanology and Limnology 2022年第4期40卷 1314-1332页

作者： Zhenyan WANG Xingyu SHI Haijun HUANG CAS Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Center for ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Seamounts aff ect the surrounding physical oceanography and form unique dynamic *** infl uences of these processes on biological and sedimentary distributions are quite diff erent in seamount areas at diff erent *** Y3 seamount is located in the Yap Arc of the tropical western Pacifi c *** water depth of its summit is~280 *** on fi eld data obtained in December 2014 and other open-access data,the physical oceanography around the Y3 seamount was preliminarily *** results show that the upper layer(0-150 m)was under the infl uence of the westward-fl owing North Equatorial Current(NEC),while the eastward-fl owing North Equatorial Undercurrent(NEUC)controlled the water between 200-800 *** NEC was strong and steady,but the NEUC was disturbed by the Y3 *** cold dome above the Y3 seamount was not caused by a Taylor cap or tidal rectifi cation but probably by upwelling during the survey *** currents were squeezed against topography and greatly amplifi ed in the Y3 *** thicknesses of the surface turbulent layers were greatly infl uenced by the spring-neap tidal *** turbulent diff usivities in the sea surface layer above the Y3 seamount were much larger than those in the open *** showed that the surface wind stress greatly aff ected the turbulent mixing in the surface layer of the Y3 *** reciprocal action between the amplifi ed tidal currents and topography was the most likely cause of the turbulent mixing near the bottom of the Y3 *** study can provide a scientifi c basis for further study of biological and depositional characteristics at the Y3 seamount.

关键词： Yap seamount tropical western pacific ocean current water mass tides turbulent diffusivity

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Two new species of the genus Munidopsis Whiteaves,1874(Crustacea:Anomura:Munidopsidae)from the Caroline Ridge,South of the Mariana Trench

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Journal of oceanology and Limnology 2021年第5期39卷 1841-1853页

作者： Dong DONG Xinzheng LI Department of Marine Organism Taxonomy&Phylogeny Institute of OceanologyChinese Academy of SciencesQingdao 266071China Center for ocean Mega-Science Chinese Academy of SciencesQingdao266071China University of Chinese Academy of Sciences Beijing 100049China Laboratory for Marine Biology and Biotechnology Pilot NationalLaboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

The genus Munidopsis has high biodiversity in seamount *** this study,two new Munidopsis species,Munidopsis ahyongi *** Munidopsis carolinensis *** the Caroline Ridge in the tropical western pacific ocean were *** *** very similar to a group of species in the *** complex,but can be readily distinguished from the related species in having the oblique posterior orbital margins,2 spines on the lateral carapace margin,and a relatively longer rostral median *** *** different from two related species primarily in having oblique frontal margins,blunt outer orbital angles,straight lateral margins of the rostrum,scale-like rugae on sternites 5-7,and less spinose pereopod 1(chelipeds,P1)merus and *** from the morphological comparisons,DNA barcode analysis and phylogenetic analysis based on the cytochrome c oxidase subunit I gene(COI)were employed for the identification of these new species.

关键词： Munidopsis new species seamount tropical western pacific ocean DNA barcodes

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Characteristics of change of the SST in the tropical western Pa-cific and the tropical Indian ocean and its response to thechange of the Antarctic ice area

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Chinese Journal of Polar Science 2000年第1期11卷 9-17页

作者：陈锦年秦曾灏 Institute of oceanology Chinese Academy of Sciences Qingdao 266071 China Qingdao oceanology University Qingdao 266003 China

In this paper, by using ocean surface temperature data(COADS), the study is made of the characteristics of the monthly and annual changes of the SST in the tropical western pacific and Indian oceans, which have important influences on the climate change of the whole globe and the relation between ENSO(El Nio Southern Oscillation) and the Antarctic ice area is also discussed. The result indicates that in the tropical western pacific and the Indian oceans the change of Sea Surface Temperture(SST) is conspicuous both monthly and annaully, and shows different change tendency between them. This result may be due to different relation in the vibration period of SST between the two oceans. The better corresponding relationship is obvious in the annual change of SST in the tropical Indian ocean with the occurrence El Nio and La Nia. The change of the SST in the tropical western pacific and the tropical Indian oceans has a close relation to the Antarctic ice area, especially to the ice areas in the eastern south Pole and Ross Sea, and its notable correlative relationship appears in 16 months when the SST of the tropical western pacific and the Indian oceans lag back the Antarctic ice area.

关键词： Antarctic ice area SST tropical western pacific ocean Indian ocean tropical eastern pacific ocean.

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