小型船舶船员管理工作小议

从厦门港小型船舶管理所存在的问题出发,提出了进一步完善小型船舶管理的一些思路和具体方法。     

唐山港曹妃甸工业区纳潮河斜拉桥的技术研究

纳潮河桥座落于唐山曹妃甸工业区,是河北省第一座大型斜拉桥,该桥地质条件十分复杂,桥梁结构技术含量高,施工难度大。通过总结该桥的施工技术与经验,可为同类型的桥梁施工提供参考借鉴。     

行车荷载对滨海地区低路堤沉降影响研究

在软土地基上的低路堤公路,应采取有效的处理措施,以防止在开放交通、受到交通荷载的往复作用后,出现路面不平整、路面破坏、水毁、翻浆等病害。     

Krill behaviour as recorded by acoustic doppler current profilers in the Gullmarsfjord

Vertical distribution of sound scattering layers were observed using bottom deployed acoustic doppler current profilers (ADCP) during early spring of 1996 and autumn of 1997 in the Gullmarsfjord on the Swedish west coast. Variations in relative backscatter were interpreted in relation to horizontal water velocities, oxygen saturation as well as differences in the light, salinity and temperature regimes. Net catches revealed that much of the backscatter below 20-m depth was associated with the presence of krill, principally Meganyctiphanes norvegica.Horizontal currents seemed to influence the migration and distribution of krill, which showed weak vertical migration patterns with low abundance during periods of strong intermediate in- and outflows, while during periods with weaker currents, a more regular diel migration occurred. Horizontal water velocities >5 cm s⁻¹ seemed to have the potential to decrease the peak in the backscatter profile. Mean vertical migration rates of krill was 1 cm s⁻¹, while maximum vertical migration rates were estimated to be 2.5–3 cm s⁻¹. The range of the vertical migration was different in 1997 due to severe oxygen deficiency in the bottom water, which prevented the krill from descending >80 m. The commencement of vertical migration correlated closely to the seasonal light conditions. The descent was immediately triggered by sunrise, while ascent occurred with a delay of about 1 h at sunset.     

Cooperation of Science and Management for Harmful Algal Blooms: Domoic Acid and the Washington Coast Razor Clam Fishery

Harmful algal blooms (HABs) may be increasing in frequency and intensity worldwide. Coastal economies suffer significant income losses when fisheries or beaches are closed to protect human health and subsistence fishing communities are at risk. Despite these hardships, managers must often conservatively close harvests across a wide area or for long periods, because they lack scientific information that would allow them to predict HAB events. The outer coast of Washington State has experienced several closures of the razor clam (Siliqua patula) fishery starting in 1991, due to domoic acid (DA) contamination caused by toxic blooms of the diatom Pseudo-nitzschia. Improved science-based management was needed to minimize the impact of DA on this fishery and the coastal communities that relied on it for income, tourism, and subsistence. The Olympic Region Harmful Algal Bloom (ORHAB) Partnership, comprised of state and tribal managers, scientists, and local stakeholders, evolved in response to this need; it has been successful in its mission. Here we examine ORHAB through the lens of the Institutional Analysis and Development framework, in order to identify key factors contributing to its success. The relevance of our findings for other ORHAB-like institutions in the Pacific Northwest and elsewhere is discussed.     

新时期江苏沿海港口物流发展策略探析

在对新时期江苏沿海港口物流发展中存在的主要问题诸如港口规划、需求结构、建港成本、集疏运体系、可持续发展动力等进行辩证分析的基础上提出相应策略。     

淤泥质海岸外航道淤积计算

利用水流泥沙输移方程和淤积公式建立了淤泥质海岸上外航道淤积计算公式,通过水槽实验和数值模拟对公式中的参数作了修订,公式计算结果与物模、数模、现场的资料及规范推荐的公式结果一致。     

沿岸往复流海岸电厂平面二维温排水数值模拟研究

应用Mike21FM模型对马来西亚沙巴电厂沿岸往复流海岸温排水进行了数值模拟,采用非结构化网格,率定了模型参数,建立了水动力模型,对取、排水口不同位置方案进行了数值模拟预测.分析结果显示,排水口位置的变化对温升分布影响较大,温度场几乎不因取水口位置的改变而变化;在水深较大位置进行温水排放对取水温升的控制更为有利;取、排...     

论建设山东半岛蓝色经济区与我国航运业的机遇

建设山东半岛蓝色经济区是包容航运业在内的系统发展战略,规划涉及的各项发展战略目标将推动我国航运业的发展,惠及集装箱运输、干散货及原油运输、港口码头等诸多航运产业领域,为我国航运业创造更多发展机遇,也提出了许多新挑战。     

以“诚信”为核心 打造山东船员品牌

通过分析山东船员品牌建设的背景和山东省船员队伍存在的主要问题,提出了山东船员品牌的内涵和打造以诚信为核心的山东船员品牌的重要举措。