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基于MapObjects的地下水位等值线生成的算法 总被引：1，自引：0，他引：1
结合临沂市地下水资源观测资料及特点，研究地下水位等值线生成算法，尝试在GIS组件——MapObjects环境下，采用不规则三角网绘制等值线的方法在MapObjects图层上生成地下水位等值线。结果表明，在MapObjects图层上绘制的等值线准确、美观，而且满足用户对等值线动态绘制的需求，应用前景广阔。 相似文献
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It is well known that in pyroxene structure,there are two metal sites,M1 and M2.Generally speaking,Ferrous iron in each of these sites would normally be expected to give rise to a doublet,However,anomalies have been found in the relative areas of the peaks in the room temperature spectra of some clinopyroxene(CPX)when the above assignment is followed.According to the calculation of Next Nearest Neighbor configurations of divalent cations in M1,we found that the four configurations of M1 can be divided into two groups.One group is 3Ca configuration that increases with the content of Ca(p.f.u);the other group is made up of three No-3Ca configurations that decrease with the content of Ca.The two groups contribute to the spectrum structure of M1.so in this study we fit two doublets for ferrous iron in M1.Though there were several reports on Fe^3 in tetrahedral site previously,it was not sure that Fe^3 occupies the T site is a universal fact in CPX,despite of the content of Al.We found that the Fe^3 in the T site fitted by Moessbauer spectroscopy is negatively correlated to the Si content in the T site and positively correlated to the Fe^3 in the T site estimated on the supposition that Fe^3 and Al occupy the T site randomly.If it is true.it is important in the modeling of ion exchange geobarometries and geothermomeries. 相似文献
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