口述百年海员故事（三）（四）（五）

正五四"运动初显海员力量一战后,巴黎和会中国政府外交失败引起了民众强烈不满,从而引发了"五四运动"。1919年6月3日和4日,北京学生因政府为曹汝霖、章宗祥、陆宗舆辩护,举行大规模街头演讲,两日间近千名学生被捕,从而激起了全国人民更大的愤怒。6月5日,全国各大城市罢课、罢工、罢市,声援北京学生的爱国运动。"五四"示威游行的消息传到上海后,学生最早在5月26日罢课。6月3日,北京学生继续进行游行讲演遭到军警的镇压后,消息传到上海,上海的商民全面开始罢课、罢市、罢工,声援北京。     

自动识别系统（AIS）检验指南（续）

（1）使用UTC时间的同步试验测量方法：建立标准试验环境，选择试验条件使EUT工作于下列同步状态：     

自动识别系统（AIS）检验指南（续）

物理试验 TDMA发信机(1)频率误差测试定义：发信机的频率误差是发信机没有调制的情况下测量的载波频率和要求的频率之差。     

自动识别系统（AIS）检验指南（续）

复合时隙报(1)5个时隙报测试方法：向EUT的PI施加一个最长121数据比特的BBM句子(见附录)，用来产生msg8的发射。要求结果：核实相应地发射5个时隙的报。     

自动识别系统（AIS）检验指南（续）

6．6 传输层试验 6．6．1 寻址报 （1） 发射 测试方法：在标准测试环境下将EUT置于自主模式。设定一个仅在AIS1信道上按计划发射的试验目标，通过EUT发射一个寻址的二进制报（msg6）给试验目标，记录在二个信道上发射的报。     

自动识别系统（AIS）检验指南（续）

12．5KHz操作模式的灵敏度测试——定义：最大可用灵敏度是在接收机额定频率的载波上，用正常测试信号调制、无干扰解调后，数据包误码率(PER)不超过特定值时，接收机输入端的最小信号电平。     

Theme Issue 30(2): "Economics of Marine Protected Areas"

Most Florida manatees depend on localized warm-water refuges in the southern two-thirds of Florida to survive winter; about 60% use outfalls from 10 power plants, whereas 15% use 4 natural warm-water springs. Future availability of these refuges is in doubt; most of these power plants may be retired within the next 20 years and groundwater withdrawals for human use threaten natural springs. This article examines possible effects on manatees from losing major warm-water refuges and alternative management actions. Because of manatee site-fidelity patterns, plant retirements may increase cold-stress-related deaths and significantly decrease manatee abundance. A forward-looking management strategy is urgently needed before decisions are made to retire plants now used by large numbers of manatees. Possible management alternatives include: gradually weaning manatees off plant outfalls, maintaining the flow of springs now used by manatees, enhancing access to suitable warm-water springs now little used or unused by manatees, constructing new non-industry dependent warm-water refuges, and creating new thermal basins to retain warm-water pockets able to support overwintering manatees.     

Community structure of mesopelagic copepods (>500 μm) in the Ligurian Sea (Western Mediterranean)

The distribution of mesopelagic copepods between 250 and 1000 m depth was studied along a transect off the coast of Villefranche-sur-Mer in June 1991 by means of a BIONESS multiple-net sampler. Among the most abundant species at all stations were Pleuromamma gracilis, Paraeuchaeta acuta and overwintering Calanus helgolandicus CV copepodites, each species inhabiting different depth layers with maximum abundances in the 250–350 m, 450–550 m and the 700–850 m layer, respectively. Cluster analysis of the vertical distribution of all species caught revealed three distinct strata (‘TOP', ‘INTERMEDIATE', ‘BOTTOM') consisting of characteristic species that occurred in the same stratum at all stations. Differences in total abundances of the species assemblage occupying each layer are discussed with regard to predation pressure by mesopelagic macroplanktonic crustaceans and fish. We show that each stratum is characterized by distinct trophic interactions and life strategies, which play an important role in the structuring of mesopelagic zooplankton communities.     

The 50<Superscript>th</Superscript> anniversary of container shipping the Admiral Sheldon Kinney (USN) lectures

The paper offers a historical overview of the container revolution. It starts from the origin more than 50 years ago, presenting how the pioneer Malcom McLean came to this idea that has changed the nature of Shipping. It then presents how and why container shipping was gradually accepted and what has been the main trends during the last 50 years: the increase in vessels’ and containers’ size and in vessels’ speed. Finally, the paper investigates what the future will bring and notably sheds light on the increase in containers’ size and on the improvements in terminal and rail services.     

Westward moving waves or eddies (Storms) on the Subtropical/Azores Front near 32.5°N? Interpretation of the Eulerian currents and temperature records at moorings 155 (35.5°W) and 156 (34.4°W)

Three Argos buoy-years of Lagrangian data in westward-moving cyclonic eddies, or Storms, near 32.5°N, together with hydrographic measurements, have shown that Storms move westward at nearly 3 km day⁻¹. Water in eddies can be trapped and moved westward by advection within the eddy or by phase propagation of the eddy pattern, so we cannot say that the flow field (or Eulerian mean) is 3 km day⁻¹ westward. Two moorings (155 and 156) deployed in the Storm Corridor have provided a further 8 instrument-years of Eulerian data. The temperature and current records confirmed that two Storms a year passed each mooring over the 2-year measurement period. As expected, there is a lag of 1.3 month at mooring 155 (which is 102 km to the west of mooring 156) with respect to conditions at mooring 156. The progressive vector diagrams (PVDs) derived from the current meter records exhibit fairly regular X (east or zonal) and Y (north or meridional) displacement scales that repeat with semi-annual periodicity (SAP). The dominant current signal is the north component of the SAP, which reaches an amplitude of 18 cm s⁻¹ for the upper layer or near surface current record (242-m depth). The geostrophic north component values derived from altimetry were in good agreement with the upper layer current meter measurements. The large north component amplitude was not interpreted as evidence for Rossby Waves but rather due to the passage of nine eddies (eight complete) of alternate sign (cyclonic, anticyclonic) passing the mooring rigs during the 2-year deployment period. The Y scale shows that the near surface characteristic or mean maximum azimuthal speed is about 35 cm s⁻¹ for cyclonic eddies or Storms, and that this value is reduced to 4 cm s⁻¹ at 1400-m depth. The residual or mean Eulerian currents range from 8 cm s⁻¹ for the upper layer currents to 1 cm s⁻¹ for the deeper currents at 1400-m depth and are predominantly westward. Simple theoretical considerations and idealised numerical simulations show that the mean westward Eulerian current depends markedly on whether the eddy centres pass to the north or south of the rigs. This raises the question as to what do we mean by Eulerian residual currents, even for relatively long records (2 years). It is shown that the strong near surface westward current (6 km day⁻¹) measured at mooring 155 is largely due to a westward-moving eddy field with variable centre offsets. The magnitude of the near surface east–west component of flow was estimated as eastward at 2 cm s⁻¹. The north–south component of mean flow was southward at 2 cm s⁻¹. The deeper records gave a weak westward flow of 1 cm s⁻¹ but did not show a significant southward component for the mean Eulerian flow field. 7.4 float-years of Lagrangian ALACE data in the Subtropical Front region near 740 dbar gave mean east–west flows that were <0.5 cm s⁻¹. Overall, it is shown that the eddy structures propagate westward mainly by phase propagation (i.e. a westward-moving pattern with no westward advection for the current meter to measure), though plane Rossby Wave dynamics appeared inappropriate. Theoretical and modeling considerations show that a speed of 3-km day⁻¹ westward is too large a value for the self-advection of eddies due to the beta effect.     

Hydrographic conditions affecting two fishing grounds of Mallorca island (Western Mediterranean): during the IDEA Project (2003–2004)

This paper describes the hydrographic conditions observed during six surveys carried out during 2003 and 2004, in the framework of the “IDEA Project” (acronym for “Influence of oceanographic structure and dynamics on demersal populations in waters of the Balearic Islands”). The surveys were developed on the shelf and slope of Mallorca Island, in particular in two fishing grounds at the north and south of the Mallorca channel. Periodic movements of the fishing fleet between these two areas have been regularly reported, suggesting a seasonal variability of the resources which could be in turn associated with the hydrodynamic variability. With this motivation, water masses affecting these grounds have been identified and their seasonal variability has been studied. Different oceanographic and environmental conditions have been found between the two fishing grounds. These differences are related to the presence of mesoscale structures, associated with the Western Mediterranean Intermediate Water (WIW) at the north of the Ibiza channel and big gyres detached from the Algerian Current. The former has been shown to have influence on the regional oceanic circulation and the latter could affect the progress of fresh Atlantic Water (AW) towards the channels and make possible the presence of high salinity values at intermediate waters at the south of Mallorca Island. Historical data from other oceanographic cruises carried out in the region are finally used to discuss the interannual variability of these mesoscale structures.     

国际、国内海运市场运价简况(2007年5月)

1国际海运市场运价大幅波动2007年5月31日波罗的海国际干散货综合运价指数(BDI)5971点,日均5123点,同比增长97.1%,较上月增长16%。5月份国际海运市场运价大起大落。月初BDI在上月底突破历史最高位基础上继续急速上扬,15日达到6688点,创历史新高,而后急速回落,跌破     

Adapting the light · biomass (BZI) models of phytoplankton primary production to shallow marine ecosystems

Several authors have reported a strong linear relationship between daily phytoplankton production and the product of chlorophyll biomass, photic depth, and incident irradiance for a variety of estuaries. This “light · biomass” (BZ_pI_o) formulation has been proposed as an alternative to traditional mechanistic approaches for computing phytoplankton production in numerical estuarine models. One limitation to their application in shallow systems is that the BZ_pI_o models have been developed in relatively deep estuaries where light does not reach the bottom. We propose a nonlinear correction factor to adapt the BZ_pI_o relationship to shallow systems where light does reach the bottom. Our function takes into account variations in incident irradiance, attenuation coefficient for light, photosynthetic efficiency, and maximum rate of photosynthesis. A series of correction polynomials are proposed for various ranges of incident irradiance, and are integrated into a single multiple polynomial which applies across all irradiance levels. Our new correction factor was tested against a ¹⁴C-based productivity dataset from shallow stations in Narragansett Bay, RI and an O₂-based dataset from shallow (1.1 m) lagoon mesocosms at the University of Rhode Island. Results showed that our polynomials accurately correct BZ_pI_o-predicted rates of production in shallow water columns. Application of our correction factor to a series of shallow water productivity datasets from the literature together with theoretical calculations show how significant the shallow water correction can be, especially in very shallow water columns with low turbidity.     

国际、国内海运市场运价简况（2007年上半年）

国际货币基金组织预测今年全球经济增长将接近5%,是连续第5年强劲增长,而我国第1季度经济增长更是达到11.1%。受全球国际贸易以及国内