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Abnormality of thermal structure and current in the upper western tropical Pacific Ocean and its effect on subtropical high

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Acta Oceanologica Sinica 1992年第1期11卷 67-82页

作者： Pu Shuzhen Yu Huiling first institute of oceanography, state oceanic administration, P. O. Box 98, qingdao 266003, china

-Mainly on the basis of the data obtained during PRC/US bilateral TOGA cruises, abnormal variation occurred during the 1986/1987 El Nino is shown in this paper about the thermal structure and circulation of the upper western tropical Pacific Ocean. The effects of the abmormal variation on the subtropical high over the Northwest Pacific Ocean are discussed. During the El Nino: (1) In the east part of the western tropical Pacific Ocean (the subsurface temperature data on the 165° E section are taken as an example), the water wanner than 29 C in the upper layer spread on the longitudinal section and positive temperature anormalies appeared in a large area of the sea surface. (2) In the west part of the western tropical Pacific Ocean (the subsurface temperature data on the 137°E section are representative ), the cross section occupied by the upper layer warmer water ( T >28 ℃ ) became shrunk, and the sea surface temperature showed negative amomalies. (3) The eastward flows in the upper layer of the 165°E section strengthened. (4)The northward flow volume of warm water from the origin area of Kuroshio, i. e. , the tropical oceanic area south of 18?0' N and from the west of 130?E to the Philippine coast, decreased. When those kinds of abnomal variation occurred, air divergence on the low level (1 000 hPa) over the Northwest Pacific Ocean was intensified, favourable to the strengthening of subtropical high over the Northwest Pacific Ocean.

关键词： Abnormality of thermal structure and current in the upper western tropical Pacific Ocean and its effect on subtropical high Nino

A PRELIMINARY STUDY OF TIDAL CURRENT RIDGES

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Chinese Journal of Oceanology and Limnology 1985年第1期3卷 118-133页

作者： Liu Zhenxia and Xia Dongxing (first institute of oceanography, state oceanic administration, qingdao) 1. first institute of oceanography State Oceanic Administration Qingdao

Tidal current ridges, widely distributed geomorphological phenomena over the continental shelf of the world, are studied. They are formed by tidal current and the trend of their sand bodies runs parallel to the direction of tidal current. There are two types of the plane shapes: the parallel and the fingered. Conditions of forming tidal current ridges are the velocities of tidal current ranging from 1 to 3.5 knots and the supply of abundant sediments. Tidal current ridges often develop in following morphological locations: the bays, estuaries, the mouths of channels, as well as the offshore area with strong tidal current. Tidal current ridges occur generally at a water depth of less than 35 *** sediments of tidal current ridges are mainly composed of sand. The grain size of the sedi-ments is uniform and well sorted. The characteristics of grain size of the sand imply that their formation mechanism is similar to that of river sand, that is, both of them are the result of flow movements in A trough

关键词： Bay A PRELIMINARY STUDY OF TIDAL CURRENT RIDGES

Geochemical characteristics of REEs and Sr, Nd isotopes of hydrothermal chimney and their geological significance in the Okinawa Trough

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Chinese Science Bulletin 1999年第S2期44卷 148-149页

作者： MENG Xianwei, CHEN Zhihua and DU Dewen first institute of oceanography, state oceanic administration, qingdao 266003, china first institute of oceanography State Oceanic Administration Qingdao 266003 China

THIS note first researches the geochemical characteristics of rare earth elements （REEs） and Sr and Ndisotopes of hydrothermal chimney in the middle Okinawa Trough. On this basis, the sources of mineralforming material and mechanisms of mineralization are discussed. 1 Analysis methods and results A hydrothermal chimney was obtained from theIsuzu depression in the middle Okinawa Trough andsamples for analysis were handpicked from *** samples belong to two types of ores, respectively,in which samples 360-1, 360-5 and 360-8 are of Cu-Znsulfide type and 159H is of barite-amorphous SiO2type. REEs were analyzed by TQ-TURBO II ICP-

关键词： hydrothermai chimney rare earth elements Sr and Nd isotopes.

The effects of sediment from an industrial outfall area on a marine planktonic ecosystem

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Acta Oceanologica Sinica 1990年第1期9卷 151-158页

作者： Wu Jinping Third institute of oceanography, state oceanic administration, Xiamen, china

-Sediment from Xiamen industrial area was added to marine ecosystem enclosures to test the effects on the planktonic communities in Xiamen Bay, china, in April, 1985. Sediments were added at two concentrations, 11.2 and 112 ppm dry wt. respectively. The species of phytoplankton did not change as compared with the control, but the number of diatoms markedly decreased in the sediment treated enclosures. A suppression of photosynthesis was presumed to be due to light attenuation by the added sediment. Microflagellates, zooplankton and bacteria were resistant to sediment increase in water column.

关键词： The effects of sediment from an industrial outfall area on a marine planktonic ecosystem area

THE SIMULATION OF THE SAR IMAGE OF INTERNAL SOLITARY WAVES IN ALBORAN SEA

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Journal of Hydrodynamics 2001年第3期13卷 88-92页

作者： Meng Jun min Ocean University of qingdao, qingdao 266003, china Zhang Zi li, Zhao Jun sheng first institute of oceanography, state oceanic administration, qingdao 2.6061, china Zhang Jie Key Laboratory of Marine Science and Numerical Modelling, Ocean Univ. of qingdao Qingdao 266003 China

SAR imaging mechanism of internal wave is studied. The numerical modelling of internal waves is obtained by the two level scheme. The simulaed SAR images that have better expressed the features of internal waves are ... 详细信息

关键词： internal wave soliton SAR simulation

The distribution of Euphausiacea in the western Taiwan Strait

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Acta Oceanologica Sinica 1991年第3期10卷 467-470页

作者： Cai BingjiThird institute of oceanography, state oceanic administration, Xiamen, china

The present paper reports the species composition and quantitative distribution of the Euphausiacea. The materials for study were taken from the western Taiwan Strait (22°22. 9′～25°43. 0′ N;116°40.0′～120°30.0′E) by the Third institute of oceanography, state oceanic administration during the investigations in May, August, November, 1984 and February, 1985.

关键词： Eu

Dissipation source function and an improvement to LAGFD-WAM model

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Acta Oceanologica Sinica 1992年第4期11卷 471-481页

作者： Yuan Yeli, Hua Feng, Pan Zengdi and Sun Letao 1. first institute of oceanography, state oceanic administration, qingdao 266003, china first institute of oceanography State Oceanic Administration Qingdao 266003 China China

In this paper, a new theoretical expression of dissipation term is presented on the basis of statistical model of breaking wave, which is an improvement to LAGFD-WAM wave model. The computational results in three typical wind fields show a good improvement to LAGFD-WAM model and a better accuracy in comparison with the observed data in the South china Sea.

关键词： WAM mode Dissipation source function and an improvement to LAGFD-WAM model

Scaling of motion and governing equations for baroclinic large-scale motions in equatorial ocean

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Acta Oceanologica Sinica 2000年第1期19卷 15-24页

作者： Fan Zhisong and Pu Shuzhen (1. Marine Environment College, Ocean University of qingdao, qingdao 266003, china 2. first institute of oceanography, state oceanic administration, qingdao 266003, china) Marine Environment College Ocean University of Qingdao Qingdao 266003 China first institute of oceanography State Oceanic Administration Qingdao 266003 China

An obvious characteristic of the baroclinic large-scale motions in the equatorial ocean is that the meridional scale H of motion is far smaller than the zonal scale L. The scaling of motion carefully with this striking characteristic in this paper results in two conclusions, i. e., the Coriolis terms associated with the horizontal component of the rotation vector cannot be neglected in the governing equations; and the use of the absence of heating is not suitable to the equatorial region. In this paper the equatorial β-plane nondimensional governing equations with the small parametersδ_0 andδ_1 have been Obtained.

关键词： Baroclinic large-scale motions in equatorial ocean horizontal component of rotation vector equatorial B-plane

Existing states of copper in the hydrothermal activity area of the Middle Okinawa Trough

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Chinese Science Bulletin 1999年第S2期44卷 244-246页

作者： GAO Aiguo first institute of oceanography, state oceanic administration, Qingdno 266003, china first institute of oceanography State Oceanic Administration Qingdao 266003 China

THERE are four submarine hydrothermal activity areas in the Middle Okinawa Trough. They are Izena hole(127°05’E, 27°16’N), Iheya Deep (126°58’E, 27°33’N). Natsushima 84-1 Mound (127°08.6’E, 27°34.4’N), Western mount of Tokunoshima island (127°39’E, 37°52’N), respectively. In an attemptto determine the influence of the Middle Okinawa Trough area hydrothermal activity on copper distributionin the surrounding sediments, 8 surface samples and 6 core samples collected from this area were analyzedfor sequential extraction procedure and bulk analyses. 1 Samples and method Sediment samples were collected at 8 stations by dredger or piston corer (table 1). The sampleswere stored at4℃, dried at<110℃, and finely ground to pass 200 meshes in an agate *** leaching procedures developed by Tessler were modified as follows: Cu (1) was ex-

关键词： copper hydrothermal activity Middle Okinawa Trough.