迎接山西气象事业更加辉煌的新世纪——新年献词

迎着新世纪的曙光,我们送走了光辉的2000年。回顾过去的一年,山西气象事业处处凝聚着气象人开拓创新、拼搏奋斗、默默奉献的业绩和成就,展现着山西气象事业跨入新千年、走向新世纪的崭新画卷。　　新千年的第一年是辉煌的一年,也是山西气象事业史上承前启后、继往开来的重要一年。我们胜利完成了“山西气象事业发展第九个五年计划”,豪情满怀地跨入了“十五计划”的发展时期。全省气象部门在中国气象局、省委、省政府的正确领导下,艰苦奋斗、开拓进取,气象现代化建设取得了重要成绩,促进了气象监测、预测、预报能力和水平的不断增强…     

纵向和横向同时约束AVO反演

为了提高AVO(amplitude versus offset)反演结果的精度和横向连续性,本文提出了一种新的AVO反演约束方法,该方法结合贝叶斯原理和卡尔曼滤波算法实现了对反演参数纵向和横向的同时约束.文章首先结合反演参数的纵向贝叶斯先验概率约束和反演参数的横向连续性假设建立了与卡尔曼滤波算法对应的AVO反演系统的数学模型,然后将该数学模型代入卡尔曼滤波算法框架,利用卡尔曼滤波算法实现了双向约束AVO反演.二维模型测试和实际数据测试结果表明,相对于单纯的纵向贝叶斯先验概率约束,双向约束能更准确地刻画参数的横向变化,得到更准确、横向连续性更好的反演结果.     

谈气象科技服务走向市场与市场风险

在社会生活中,人们需要大量信息。由上海气象局和《新民》联合晚报举办“气象万千”的调查显示,天气预报已成为人民生活中不可缺少的信息。气象事业是社会基础性公益事业,是政府履行社会服务的义不容辞的责任和公务,实施中是无偿的,发展前景是广阔的。     

Sensitivity Analysis of Air Gap Motion with Respect to Wind Load and Mooring System for Semi-Submersible Platform Design

A design of semi-submersible platform is mainly based on the extreme response analysis due to the forces experienced by the components during lifetime. The external loads can induce the extreme air gap response and potential deck impact to the semi-submersible platform. It is important to predict air gap response of platforms accurately in order to check the strength of local structures which withstand the wave slamming due to negative air gap. The wind load cannot be simulated easily by model test in towing tank whereas it can be simulated accurately in wind tunnel test. Furthermore, full scale simulation of the mooring system in model test is still a tuff work especially the stiffness of the mooring system. Owing to the above mentioned problem, the model test results are not accurate enough for air gap evaluation. The aim of this paper is to present sensitivity analysis results of air gap motion with respect to the mooring system and wind load for the design of semi-submersible platform. Though the model test results are not suitable for the direct evaluation of air gap, they can be used as a good basis for tuning the radiation damping and viscous drag in numerical simulation. In the presented design example, a numerical model is tuned and validated by ANSYS AQWA based on the model test results with a simple 4 line symmetrical horizontal soft mooring system. According to the tuned numerical model, sensitivity analysis studies of air gap motion with respect to the mooring system and wind load are performed in time domain. Three mooring systems and five simulation cases about the presented platform are simulated based on the results of wind tunnel tests and sea-keeping tests. The sensitivity analysis results are valuable for the floating platform design.     

中国磷矿资源预测模型及找矿远景分析

[研究目的]磷矿是具有战略意义的矿产资源,2014年至今,中国地质调查局组织编写的中国矿产地质志,全面描述了中国磷矿全貌及重要成矿规律,加强了对全国磷矿矿情的掌握.本文依托中国矿产地质志项目,系统总结了中国磷矿时空分布特征,圈定了磷矿找矿远景区和磷矿重点勘查区,对未来磷矿找矿工作有一定的参考价值.[研究方法]本文选取了...     

修武县十七名干部受处分

修武县国土资源局在土地执法检查工作中,按照“既处理事又处理人”的原则,对17名在违法用地中的干部进行了党纪政纪处分。卫星遥感执法检查工作开展后,该局一是建立了一把手亲自抓、分管局长、有关业务股长具体抓、各乡所共同参与的工作体系,并抽调20余名业务骨干组建了卫片专业队伍;二是制定了工作方案,建立了每周例会和工作通报制度,先后投入50万元专项资金,购置了必要的设备和办公用具,为卫片工作的顺利开展创造了必要的条件;三是认真开展卫片图斑核查工作。共对违法用地69件78宗违法案件全部做出了行政处罚。对符合移送条件的违法用地案…     

春早风正当奋起——修武县国土资源局开展纪律作风整顿活动

一年之计在于春.春节过后一上班,修武县国土资源局党组就积极筹划,在元宵节之前,组织开展了为期四天的"学先进、树形象,纪律作风整顿"活动,使同志们持续保持良好的精神状态、旺盛的工作热情,开创国土资源工作新局面.