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六股水磷矿床赋存于下寒武统麦地坪组,包含2个磷矿层、6个磷矿体。矿体水平延伸1200～2700m,均厚1.3～4.88m,深部延深大于120m。矿石类型有块状及白云质条带(条纹)状2种磷矿石,P2O5平均品位29.42%。稀土元素总量低,分布模式呈轻稀土富集型。矿床为生物化学沉积成因,磷经历了复杂的富集过程。 相似文献
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简要论述了自动气象站建设的重要性以及国内地面自动站的发展概况；介绍了广西南宁市中尺度自动气象站的布局和自动气象站主控数据处理中心的建设情况；详细论述了基于Linux平台的南宁市中尺度自动气象站SYBASE数据库系统的建立、数据处理以及业务应用系统的开发应用情况，并对自动站资料在城市天气预报、环境预报等预报领域以及在政府决策网、公众网以及专业气象服务中的应用前景进行了展望。 相似文献
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Leszek Czechowski 《Acta Geophysica》2006,54(3):280-302
A parameterized theory of convection is developed for 6 medium-size icy satellites (MIS) of Saturn. It is an extension of
the research concerning the Mimas-Enceladus paradox. Two parameterizations of dimensionless temperature are used in the model
and a new constrain for tidal heating is included. It is found that the basic results of the model are independent of particulars
of the parameterizations. The new constrain considerably reduces the space of possible values of the material parameter of
satellites but the two basic conclusions are unchanged, i.e.: (a) the thermal state of the considered MIS can be explained
in the frame of the uniform model that includes radiogenic and tidal heating; (b) the theory indicates that endogenic activity
of some MIS was (or is) a result of a specific ‘excited’, high temperature state of a given satellite. The theory could be
also used for estimation of tidal heating. 相似文献
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