应用小波变换与二维分形技术预测奥灰裂隙发育带

以许厂煤矿的应用为例，介绍了小波变换和二维分形技术的基本理论以及预测奥灰裂隙发育带的方法、步骤及效果。理论与实际分析表明，在预测奥灰裂隙发育带中，小波变换可以提高地震资料的分辨率和信噪比，二维分形参数有很高的参考价值，二者的结合为预测奥灰裂隙发育提供了一种有效的方法。     

A Solar Radio Spectrometer at 5.2–7.6 GHz

The properties, structure and performance of a Solar Radio Spectrometer working at 5.2–7.6 GHz developed by National Astronomical Observatories/Beijing and Hebei Semiconductor Research Institute are described. The spectrometer has a spectral resolution of 20 MHz and a temporal resolution of 5 ms, with an instantaneous detectable range from 2% to 10 times flux of the quiet Sun. It can measure both left and right circular polarizations with an accuracy of 10% of polarization degree. Some results of preliminary observations are presented.     

基于MapObjects的中国洞穴石笋信息管理系统

以中国洞穴石笋信息管理系统的设计与实现为例,讨论如何运用GIS组件MapObjects（MO）与可视化编程语言VisualBasic相结合这一开发模式,进行应用型的二次开发。并介绍了该系统的一些功能和数据库的设计,对系统中关键技术做了总结,通过该系统实现对能反映古气候的石笋信息的有效管理,为系统的后续功能拓展和维护积累了经验。     

A New Solar Broadband Radio Spectrometer (SBRS) in China

A new radio spectrometer, Solar Broadband Radio Spectrometer (SBRS) with characteristics of high time resolution, high-frequency resolution, high sensitivity, and wide frequency coverage in the microwave region is described. Its function is to monitor solar radio bursts in the frequency range of 0.7–7.6 GHz with time resolution of 1–10 ms. SBRS consists of five `component spectrometers' which work in five different wave bands (0.7–1.5 GHz, 1.0–2.0 GHz, 2.6–3.8 GHz, 4.5–7.5 GHz, and 5.2–7.6 GHz, respectively). A combination of multi-channel and scanning techniques is adopted. The component spectrometers are attached to different antennas which are separately located at Beijing, Kunming, and Nanjing. Close attention was paid to solve the problems of sensitivity, dynamic range, interference-resistance, data acquisition, and handling a large amount of data. The SBRS was put into operation in the 23th solar maximum activity period, and has proved itself to be a valuable instrument for the study of solar bursts in microwaves.     

基于小波包变换距离特征选取的遥感影像融合

介绍了基于小波包变换和距离特征选取的影像融合方法：首先对多光谱影像做IHS变换;其次对多光谱影像的亮度分量和全色影像做小波包变换并分别采用加权平均法和距离特征选取法融合低频部分和高频部分;最后通过小波包重构和IHS逆变换得到最终的融合影像。以ERDAS8．5软件自带的影像文件为例对这种方法进行了实验,并利用信息熵等标准与其他融合方法进行了比较,实验结果表明该方法能得到更好的融合效果。     

轮古西奥陶系古潜山油藏油水界面的分布规律和控制机理

碳酸盐岩古潜山油藏储层非均质性强烈,油、水分布特征十分复杂.以现代岩溶理论为指导,通过对轮古西奥陶系古潜山岩溶地表古水系的详细分级刻画,采用趋势面分析方法对古潜山岩溶残丘次级进行了划分,结合单井油水界面判识结果,对残丘级次的控油规律进行了综合分析,并运用油气差异聚集原理阐述了其控制机理.研究结果揭示了古潜山油藏部分油井油水界面分布受控于不同次级的残丘,从运移近源低部位向高部位油水界面呈抬升趋势,由一级残丘控制向二级残丘控制变化.这一分布规律本质上是油气差异聚集过程中不断抬升的岩溶沟谷决定的溢出点和相对独立的缝洞单元联合控制的.这一认识可为油藏开发方案的制定和调整提供重要依据.     

近代海洋沉积物（层）中姥鲛烷／植烷比值及其地球化学意义

通过分析研究东海西部OR_1井的资料及南黄海北部田横岛东南方向的柱状取心资料,发现东海及南黄海近代沉积物中姥鲛烷/植烷比值均小于1,平均值为0.28—0.35。而古代海相沉积岩中有机质的姥鲛烷/植烷比值一般都在0.5—3.0之间。从而得出:姥鲛烷/植烷比值的大小可能与沉积物中有机质的成熟度(演化程度)有关。