Home |  About Journal |  Editorial Board |  Guide for author |  Order |  Index in |  downloads |  Messages |  Contacts Us |  Reward |  Chinese Version Office     Quick Search Adv Search

· Online Submission 　· Manuscript Tracking 　· Editor Work 　· Office Work 　· Editor-in-chief Journal 　· Forthcoming Articles 　· Current Issue 　· Next Issue 　· Archive 　· Adv Search 　· Volumn Content 　· Read Articles 　· Download Articles 　· Email Alert   2012, Vol.31 Num.1 Online: 2012-03-10 Marine geomorphology Marine Hydrology Marine Physics Marine Geology Marine Biology Marine Environmental Science Marine Scientific and Technological Management   Marine geomorphology 1 DU Juan,ZHENG Fei,ZHU Jiang A reconstructed subsurface entrainment temperature data over the tropical Pacific for the past 153y The temperature of subsurface water entrained into the mixed layer ( T e ) is very important to improve El Niño-Southern Oscillation (ENSO ) simulations and modulated ENSO decadal variability. Based on an intermediate coupled model (ICM) and nudging data assimilation method, a long-term monthly-mean Te dataset is reconstructed over the tropical Pacific for the period of 1856 - 2008. The verification results show that the reconstructed Te data have high correlations and small root mean square (RMS) errors with three analysis Te dataset in the last 50 years. Also, the simulated sea surface temperature (SST) anomalies from the ICM, forced by the reconstructed Te dataset, can simulate realistic interannual and decadal variability of ENSO very well. This indicates that the reconstructed Te dataset is useful for climate research, especially for the large-scale low frequency or decadal variability of ENSO . 2012 Vol. 31 (1): 1-9 [Abstract] ( 194 ) [HTML 1KB] [PDF 738KB] ( 196 ) 10 GE Li-li,CHENG Xu-hua,QI Yi-quan,WANG Dong-xiao Upper-layer geostrophic volume, heat and salt transports across 18° in the South China Sea Thermal wind relation is applied to compute the upper 1000-m layer meridional geostrophic velocity across the 18° section in the South China Sea (SCS), based on the hydrographic data collected during the open cruises of northern SCS from 2005 to 2008 and merged altimetry data. The geostrophic velocity is compared with the Acoustic Doppler Current Profilers (ADCP) observations, and the upper 1000-m layer geostrophic volume, heat and salt transports across the 18° section in the SCS are estimated. The results indicate that the meridional geostrophic velocities display belt distribution along the section during the cruises . The estimated geostrophic velocities are in good agreement with the ADCP data except at few stations. Sea surface height distribution derived from altimeter data shows that the distribution of meridional geostrophic velocities is closely related with mesoscale eddies. T he total geostrophic volume, heat and salt transports of 2005 - 2007 in the upper 1000 m are all southward across 18°, and the three-year-averaged values are - 11.8 Sv, - 0.38 PW, and - 418.8 Gg° - 1 , respectively. However, the transport varies greatly from year to year. The volume, heat and salt transports of 2005 were the largest, while those of 2007 were the smallest. The geostrophic volume, heat and salt transports of 2008 from 110° to 117° are - 7.3 Sv, - 0.22 PW, and - 259.4 Gg° - 1 , respectively. 2012 Vol. 31 (1): 10-17 [Abstract] ( 180 ) [HTML 1KB] [PDF 844KB] ( 185 )   Marine Hydrology 18 HE Jian-ling ,CAI Shu-qun Study on the hydrological characteristic parameters and flow field east of the Luzon Strait using Argo profiling floats The seasonal characteristics of water masses and the monthly variation of mixed layer depth are studied using Argo profiling floats in 2006 east of the Luzon Strait. The temperature-salinity relation indicates the seasonal variation of water masses is not obvious. Compare to those in summer and fall, the surface temperature is lower and the surface salinity is higher in spring and winter; they change little in deeper layers. Seasonal variation of the mixed layer depth is obvious; it is the deepest in winter with a value over 160 m, whilst it is the shallowest in summer with a value of 20 m. Based on the P -vector method, the current field in fall is calculated using Argo seasonal mean data between 2002 and 2009, Levitus data and Argo data in 2006, respectively. The wind-driven Ekman drift current is also computed. The result obtained by Argo seasonal mean data is significantly better than that by the Levitus data; the Argo data can show the structure of Kuroshio and eddies. The coupled current structure obtained by Argo data in 2006 and Ekman drift current is similar to that by the altimeter data, except that the velocity of the former is less, which may be related to the coarse and unevenly distribution of Argo profiling floats and the subsequent interpolation error. However, a three-dimensional structure of flow field could be obtained by the Argo data, whilst only the surface current field can be obtained by the altimeter data. 2012 Vol. 31 (1): 18-27 [Abstract] ( 173 ) [HTML 1KB] [PDF 1050KB] ( 177 ) 28 SHAN Hai-xia,GUAN Yu-ping,WANG Dong-xiao,HUANG Jian-ping Responses of equatorial ocean to rare typhoon Vamei We use GHRSST L4, QuikSCAT, OAFLUX and SeaWiFS L3 data sets to analyze the change of sea surface temperature (SST), sensible heat flux, latent heat flux and chlorophyll - a concentration in the equatorial ocean where Typhoon Vamei passed through. Before Typhoon Vamei was generated, there was a significant cyclonic vortex over the equatorial region of the southern South China Sea, the average SST in the coastal region of South China Peninsula was lower than other regions, and northeasterly wind prevailed in this area. The latent heat flux and sensible heat flux were larger in the genesis location of Typhoon Vamei . As usual, the cooling occurred on the right side of the track of Typhoon Vamei. The SST decreased by about 2 - 2.5 ℃ . However, compared to higher-latitude typhoons, the cooling was much small in this case. The region where SST decreased significantly was between the east of the Malay Peninsula and the Strait of Malacca. Similar to higher-latitude typhoons, Typhoon Vamei increased chlorophyll- a concentration in the coastal area between Sumatra and the Malay Peninsula by 0.6 mg·m - 3 or more compared to the pre-typhoon value. 2012 Vol. 31 (1): 28-34 [Abstract] ( 190 ) [HTML 1KB] [PDF 633KB] ( 161 ) 35 LIU Guang-ping,HU Jian-yu A preliminary analysis of variation of the Kuroshio axis during tropical cyclone The impacts of tropical cyclones Abe (9315), Becky (9316), Morakot (0309) and Melor (0319) on the Kuroshio axis near the Luzon Strait are analyzed using satellite altimeter data . The results are as follows. 1) As affected by tropical cyclone, the Kuroshio axis can be easily shifted. 2) Under the influence of tropical cyclone, the Kuroshio axis changes due to the variation of mesoscale eddy. As the warm eddy in the east of the Luzon Strait moves westward, the Kuroshio axis bends to the west , which is conducive to the Kuroshio’s intrusion through the Luzon Strait. 2012 Vol. 31 (1): 35-41 [Abstract] ( 201 ) [HTML 1KB] [PDF 572KB] ( 167 )   Marine Physics 42 HUANG Er-hui,YANG Yan-ming Analysis of influence of stratified water bodies on underwater irradiance ratio by Monte Carlo model Many in-situ data indicate that the vertical stratification of the inherent optical properties and optical active constitutes in euphoric depth is a common phenomenon in most ocean water. Most of satellite retrieval algorithms of the optical constitutes concentration are, however, based on the assumption of homogeneous ocean water, especially for empirical retrieval models, which are usually based on the statistical relation between the reflectance spectral of surface and the depth-averaged constitute concentration or that of a certain depth. Using the underwater optical radiative transfer model, the influences of vertically stratified concentration of chlorophyll and suspended sediment matter on the irradiance ratio at the depth of 0- m are respectively analyzed. The two computation formulas of depth-weighted equivalent concentration of stratified water and their responding irradiance ratio at 0- m depth are then compared. The results indicate that the primary error sources is the light penetration depth and the intensity of stratification: the deeper the penetration and the more distinct stratification, the greater the effect of stratified water on the value of irradiance ratio at 0- m depth, as well as the error of depth-weighted equivalent concentration. Gordon’s computation results of equivalent concentration are more accurate, and the Zaneveld ’s results overestimate the equivalent concentration of stratified water. 2012 Vol. 31 (1): 42-49 [Abstract] ( 160 ) [HTML 1KB] [PDF 539KB] ( 137 ) 50 CHEN Jing,YAN Pin,WANG Yan-lin,JIN Dan,LIN Qiu-jin Choice of parameters for Biot-Stoll model — based inversion of sound velocity of seafloor sediments in the southern South China Sea Seafloor sediment properties are important to the survey of marine mineral resources and engineering. The Biot-Stoll model can simulate physical properties of sediment differently with distinct parameters. Stoll parameters are the statistical numbers when the Biot-stoll model gives the best forecast, while Schock parameters are some of the model parameters that need to be modified, such as porosity, pore radius, and pore tortuosity of sediments. In this study, we use the Biot-Stoll model and Stoll and Schock parameters to inversely obtain the sound wave velocity of the sediments in the southern South China Sea, and compare them with the measuring values. The results show that the velocity of fast compression wave calculated by the Biot-Stoll model with Stoll parameters has large errors comparing with that measured in laboratory, whose average is 3.962%, while the model-based predication is more consistent with the laboratory data when using the Schock parameters, whose average is - 0.847%. These results suggest that it is more accurate to study the sediments in the SCS using Schock parameters. 2012 Vol. 31 (1): 50-54 [Abstract] ( 166 ) [HTML 1KB] [PDF 295KB] ( 159 )   Marine Geology 55 LIN Qiu-jin,YAN Pin,YU Hong,ZHENG Hong-bo,TANG Qun-shu,WANG Yan-lin Multiples suppression using combination method in Chaoshan Depression of the South China Sea The Chaoshan Depression, where the Mesozoic strata well developed, is an important mothball area for gas and oil exploration in the South China Sea. Identification and suppression of seismic multiples are especially difficult and are the keys to this area. In order to obtain high-quality seismic profiles, combining methods for multiples suppression is critical. According to the original seismic data with abnormal development and various multiples in two dimensions, This paper analysises the types and properties of the multiples, trying to suppress multiples using combination method with predictive deconvolution in τ-p domain, Surface Related Multiples Elimination (SRME) and Hyperbolic Radon transform. Short-period reverberation and peg-leg multiples are effectively attenuated by predictive deconvolution; SRME method is used for suppressing surface-relat ed multiples well, especially in the near-offset range; and hyperbolic radon transform is a good choice to attenuate long-period and surface-related multiples that are not sufficiently suppressed. As we expected, the quality of seismic profile improves significantly after suppress multiples using combination method . 2012 Vol. 31 (1): 55-61 [Abstract] ( 178 ) [HTML 1KB] [PDF 1730KB] ( 133 )   Marine Biology 62 OU You-jun,HE Yong-liang,LI Jia-er,JI Lei Color variation and fins development during postembryonic development stage of Trachinotus ovatus The body color variation and fins development at early life stages of Trachinotus ovatus were continuously observed by colleting samples of larvae, juveniles and young fish reared in pond from newly hatching to 31 days after hatching (DAH) under water temperature of 24.73 ± 2.11 ℃ , salinity of 20 ‰ - 24 ‰ and pH of 8.0 - 8.2 . The newly hatched larvae were covered by melanin . Brown pigment in eye-sport increased at 2 DAH, while the mouth was not found opening and visual sense undeveloped. Mouth opened at 3 DAH, eye became black, big and protruding, covered by melanin, with optic function. Metamorphosis occurred at 17 DAH, when the larvae were turned into juveniles and the body became opaque. The body color changed into brown at 22 DAH while the metamorphosis was finished from juvenile to young fish. It was argent a t 30 DAH with the body color in accord with adult stage. The fin development was in order of pectoral fin, caudal fin, dorsal fin, anal fin and ventral fin. Primordial pectoral fin appeared in 1-day-old larvae, first feeding was observed at 2 - 3 DAH, with the fan-like pectoral fin. Fins were developed completely at 17 DAH , symbolizing the start of juvenile stage. Results of this research indicated that body color variation and fins development in T. ovatus played a very important role to life activities of larvae and juveniles such as feeding, behavior, movement, growth, metamorphosis and survivorship, being one of the important characters in metamorphosis development of larvae and juveniles, it correlated closely with artificial seedling production especially in feeding and grading. 2012 Vol. 31 (1): 62-66 [Abstract] ( 159 ) [HTML 1KB] [PDF 389KB] ( 136 ) 67 CHEN Su-wen,WU Jin-feng,CHEN Li-xiong Effects of freezing storage of fertile Gloiopeltis furcata on its released spores’ number and spores’ attachment In order to study spore culture of Gloiopeltis furcata in non-reproduction season, two experiments were conducted on freezing storage of fertile Gloiopeltis furcata in terms of its released spores’ number and spores’ attachment. In the first experiment, six group of fertile Gloiopeltis furcata of different dry-degree was preserved at - 18 ℃ for six months and then released at water temperature of 16 ℃ . The results showed that the best preservation effect of fertile Gloiopeltis furcata was the group that dry weight was about 25% of its fresh weight. The released spores’ number of this group was about 77.6% of the control group (the fertile Gloiopeltis furcata which was not dealed with air drying and preservation) and there was no significant difference in spores’ attachment between this group and the control group. In the second experiment, fertile Gloiopeltis furcata that dry weight was about 1/4 of its fresh weight was preserved at - 18 ℃ , - 36 ℃ , and - 80 ℃ for eight months and then released spores at water temperature of 8 ℃ , 12 ℃ , 16 ℃ , and 20 ℃ . The results showed maximum spores appeared at water temperature of 12 ℃ and fertile Gloiopeltis furcata that preserved at - 36 ℃ and - 80 ℃ released more spores than those preserved at - 18 ℃ . The two experiments showed a simple and convenient method for spore culture of Gloiopeltis furcata in non-reproduction season and would assist the preservation of germ plasm of Gloiopeltis. 2012 Vol. 31 (1): 67-71 [Abstract] ( 167 ) [HTML 1KB] [PDF 329KB] ( 136 )   Marine Environmental Science 72 YAO Yue,XU Hui-ping Preliminary application of remote sensing: reclamation on Fujian coast and its effects on marine environment It is one of the current hot topics in application of remote sensing to use remote sensing techniques in coastal dynamics research and marine environment retrieval. We retrieved the changes of Fujian reclamation and the mainland coastline from thematic mapper (TM) remote sensing image, which realizes coastline automatic extraction, land classification and marine environmental parameters retrieval using ENVI and ArcGIS softwares to process regional remote sensing images. We also retrieved sea surface temperature (SST) and chlorophyll concentration from moderate-resolution imaging spectroradiometer (MODIS ) ocean color remote sensing images in the same season and area, to discuss the reclamation’s potential effects on marine environment. 2012 Vol. 31 (1): 72-78 [Abstract] ( 172 ) [HTML 1KB] [PDF 682KB] ( 186 )   Marine Scientific and Technological Management 79 WU Yuan-tao,REN Xiao-bo,SUN Hui-li Thoughts on science and technology layout of marine biological resources research in China China is rich in marine biological resources. Its sustainable utilization of marine biological resources is one of the most effective and innovative areas in the world's scientific and technological innovation. China's marine economy had achieved exciting results during the “Eleventh Five-Year Plan” period. In this paper, the science and technology layout and progress of marine biological resources research were analyzed; the constraints of marine science and technology development include five aspects: imperfect theoretical system, lack of funding support, insufficient support of research platform, weak development of talent team, and shortage of integrated product development. It was proposed that the major basic scientific issues and technical issues should be concerned, the efficiency of using scientific and technological input should be improved, the construction of scientific research platform should be strengthened, the high-level key leaders and young scientific talents should be stably supported, and the development of new marine products and its popularization should be emphasized. 2012 Vol. 31 (1): 79-85 [Abstract] ( 190 ) [HTML 1KB] [PDF 189KB] ( 193 ) · · · · More>>   　· Wanfang Data 　· CNKI More>>

Copyright © 2008  JOURNAL OF TROPICAL OCEANOGRAPHY Support by Beijing Magtech Co.ltd 粤ICP备10068492号