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地层曲线
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  stratigraphic curves
     Isotope Stratigraphic Curves of Devonian Marine Carbonates in Ganqi Profile
     甘溪剖面泥盆纪海相碳酸盐岩的同位素地层曲线
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  “地层曲线”译为未确定词的双语例句
     The shape of the stratum curve of the Carbon and Oxygen isotopes resembles that of isotope curve in the geological time given by Veizer et al .
     碳氧同位素地层曲线与 Veizer et al.
短句来源
     The abnormal shifts of carbon iso-topic composition can be found between the palaeontological zones in the Ordovician, so the isotopic curves can be used as a tool for stratigraphical division and correlation in a large area.
     碳同位素组成在华北地区奥陶系各组生物化石带更叠之间均有异常波动,稳定同位素地层曲线可以成为大区域地层划分与对比的重要标志之一。
短句来源
     The carbon isotope curve of the strata coincides with the variation curve of sea level inferred from sedimentary facies. The deepening of sea water conforms to the peak of ? 13C value.
     本区碳同位素地层曲线与根据沉积微相推断的海平面变化曲线十分吻合,表现为δ13C高值区海水变深。
短句来源
  相似匹配句对
     STRATUM
     地层
短句来源
     curve
     曲线
短句来源
     Curve Comparison is a foundation correlation method in formation correlation.
     曲线对比是地层对比的基础手段。
短句来源
     A NEW METHOD FOR ABNORMAL PRESSURE PREDICTION IN UNCONTINUOUS SEDIMENTARY FORMATION
     利用测井曲线预测地层压力
短句来源
     Multiresolutiou Curves
     多分辨率曲线
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  stratigraphic curves
A number of the stratigraphic curves were digitized from original figures using a digitizing pad and Jandel Scientific SigmaScan.
      


Fuzzy cluster analysis has been used in hydrocarbon indication and trap evaluation.It also can be applied to stratigraphic Correlation.In coal exploration,strata are generally correlated by correlation method. According to correlation method,a known logging curve is used as a standard and correlated with a new logging curve so as to get their cor- relation coefficient,which is then taken as the basis of stratigraphic correlation.Actually,the result of such correlation analysis is fuzzy. If viewed from fuzzy...

Fuzzy cluster analysis has been used in hydrocarbon indication and trap evaluation.It also can be applied to stratigraphic Correlation.In coal exploration,strata are generally correlated by correlation method. According to correlation method,a known logging curve is used as a standard and correlated with a new logging curve so as to get their cor- relation coefficient,which is then taken as the basis of stratigraphic correlation.Actually,the result of such correlation analysis is fuzzy. If viewed from fuzzy mathematics,the known logging curve is used as a “pattern”,and the correlation of strata is called “pattern identifi- cation”.It follows that stratigraphic correlation can be considered as a fuzzy cluster analysis question.It must be pointed out that the ty- pical systematic cluster analysis and dynamic cluster analysis are not usable to stratigraphic correlation. A useful method is recommended here and its procedure is as follows. (1) computing the correlation coefficients between the known logging Curves of the kth stratum and the curves to be correlated. (2) obtaining the weighted average of correlation coefficients, which is then used as the membership functioh of subset. (3) choosing the preliminary threshold value of the membership function.When a functional value is not less than the threshold va- lue,we think it possible that the curve segment corresponding to the kth stratum is found.It doesn't matter whether the preliminary thre- shold value is suitable or not,because it can be modified again and again. (4) the found curve segmefit corresponding to kth stratum is then used to correlated With another new set of logging curves,we then obtain another kth stratum curve,which can be further used to repeat the process.The repeated process goes on until the end. After all the processings of k strata (k=1,2,3,…,K) are done, we can say that the cluster analysis of k subsets for the preliminary threshold is finished.

模糊聚类分析已经广泛地用于油气检测和构造评价,它也可以用于地层对比。以往在煤田勘探中,多采用相关法进行地层对比,即以一已知钻井的测井曲线作为对比标准,与待对比的测井曲线进行相关运算,以相关系数的大小作为确定地层对比关系的依据。实际上相关分析的结果是模糊的。从模糊数学的观点看,当作对比标准的曲线可以视为“模式”,地层相关对比过程是“模式识别”过程。由此可知,地层对比可以看成是一个模糊聚类分析问题。典型的系统聚类分析法以及动态聚类分析法对地层对比是不适用的。这里介绍的方法是这样的:(1)首先计算 k 地层的测井曲线与待对比的测井曲线的相关系数;(2)综合各类测井曲线的相关系数作为子样的隶属函数;(3)初步选定隶属函数的阈值,若隶属函数值大于或等于选定的阈值,则初步认定在待迷对比的钻井井段找到了相应 k 地层的曲线,初选的阈值不合适也无妨,还可反复修改;(4)将上述认定属于 k 地层的曲线再与待对比的测井曲线段进行上述运算,又获得一批新的归属 k 地层的曲线段,以此新曲线段为准,再重复上述步骤,直到再无新的属于 k 地层的曲线段为止。对 k=1,2,…,K 等情况均进行相同的处理,即对初步选定的阈值完成了具有 k ...

模糊聚类分析已经广泛地用于油气检测和构造评价,它也可以用于地层对比。以往在煤田勘探中,多采用相关法进行地层对比,即以一已知钻井的测井曲线作为对比标准,与待对比的测井曲线进行相关运算,以相关系数的大小作为确定地层对比关系的依据。实际上相关分析的结果是模糊的。从模糊数学的观点看,当作对比标准的曲线可以视为“模式”,地层相关对比过程是“模式识别”过程。由此可知,地层对比可以看成是一个模糊聚类分析问题。典型的系统聚类分析法以及动态聚类分析法对地层对比是不适用的。这里介绍的方法是这样的:(1)首先计算 k 地层的测井曲线与待对比的测井曲线的相关系数;(2)综合各类测井曲线的相关系数作为子样的隶属函数;(3)初步选定隶属函数的阈值,若隶属函数值大于或等于选定的阈值,则初步认定在待迷对比的钻井井段找到了相应 k 地层的曲线,初选的阈值不合适也无妨,还可反复修改;(4)将上述认定属于 k 地层的曲线再与待对比的测井曲线段进行上述运算,又获得一批新的归属 k 地层的曲线段,以此新曲线段为准,再重复上述步骤,直到再无新的属于 k 地层的曲线段为止。对 k=1,2,…,K 等情况均进行相同的处理,即对初步选定的阈值完成了具有 k 个子集的聚类分析。

Based on the strontium isotope variations of the Carboniferous marine carbonates and brachiopod shells from Majiaoba profile the paper discusses the implication of strontium isotopic stratigraphic curve and suggests that the strontium isotopic compositions of marine carbonates and brachiopod shells may provide a tool for understanding the tectionic evolution of the Earth.

本文从马角坝剖面石炭系海相碳酸盐岩和腕足化石的锶同位素变化出发,讨论了锶同位素地层曲线的地质意义,并且指出海相碳酸盐岩和腕足化石的锶同位素组成可作为了解地球构造演化的工具。

This paper divided Devonian strata of the Longmen Mountain into four sedimentary cycles or four sequences and established Sr and C isotope stratigraphic curves for marine carbonates of Devonian. The sea level fluctuation of Devonian can be studied according to the combination of isotope evolution and sedimentary cycles.

文章将龙门山地区泥盆系划分为四个沉积旋回,即四个地层层序,建立了该区泥盆纪海相碳酸盐锶、碳同位素地层曲线,并将同位素演化与沉积旋回结合起来研究该区泥盆纪的海平面变化。

 
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