利用微机进行航片转绘     

杨存建 《测绘科学》1994,(2)

本文所述方法的基本思路是：根据空间后方交会原理建立单张航片的投影变换模型，利用扫描仪输入航片调绘数据和地形高程数据，利用投影变换模型对航片数据进行变换处理，从而实现对航片的转绘。该方法适用于高山、丘陵、平地的航片转绘。  相似文献   

四川富顺─南溪地区地貌特征与经济开发的1∶10万TM图像判读     

许仲路 《遥感学报》1994,(2)

本文利用不同地物在同一波段或相同地物在不同波段具有不同色调的变化规律，来目视判读７幅ｌ∶ｌ０万的ＴＭ黑白和彩色合成图像。通过细致地分析、对比，在富顺─南溪地区判读不同泥沙含量、不同深浅的水体，了解河床中深槽、浅滩地貌，准确勾绘所有大于像元的水体涯线，确定沟谷的宽度和相对深度，查明沟谷成因，划分漫滩和河谷阶地，圈定丘陵和山地的，分布，研究它们的形态和成因，为区域开发奠定科学的基础。  相似文献   

SP anomaly over doable line of poles-interpretation through log curves     

B. V. S. Murty  P. Haricharan 《Journal of Earth System Science》1984,93(4):437-445

In the analysis and interpretation ofsp anomalies, two-dimensional finite sheet models are equated to the double line of poles. The profiles over such a model being asymmetric with a minor positive peak and a major negative peak, a double logarithmic curve matching technique simpler than that of Meiser is suggested in the paper for easy and unique solution for all values of depth, dip and length. This technique along with a few others have been tested on two profiles across the sulphide deposit from the Rakha Mines, Singhbhum copper belt, India.  相似文献   

天山地区遥感解译及铀矿化地质特征     

崔振奎  罗富生  陈跃周 《铀矿地质》1986,(4)

本文通过卫星照片解译对天山地区的地层进行了划分,尤其是通过线性构造的解译把天山地区分成了若干个不同性质的地块,并对构造规模进行了分级。此外,还讨论了新老构造的继承关系,构造与岩体之间的相互依存关系等。本文又通过环形体的解译进一步确定了火山岩的喷发期次、活动规模及其与铀矿化的关系。通过对花岗岩体侵入期次和相带的划分,进而在解译中配合四道能谱测量判读标志来分析不同影象地质体的可能含铀丰度。另外还探讨了褶皱构造各要素的半定最估算的可能性。  相似文献   

Fault interaction and seismicity: Laboratory investigation and its seismotectonic interpretation   总被引：2，自引：0，他引：2  

A. piák  T. Lokajíek 《Pure and Applied Geophysics》1986,124(4-5):857-874

Systems of two parallel linear faults of the same length with the angle of inclination =45° were investigated under uniaxial linearly increasing load. Perspex plates were used as models. For each treated fault configuration the morphology of tensile cracks and the sequence of seismoacoustic events of shear and tensile origin were studied.It is shown that the seismic regime of a fault system is strongly influenced by the contact conditions on a fault plane; it is different in the faults with the aseismic contact, represented by open slits, and in the faults with the seismoactive contact, represented by filled slits, respectively.The experiments proved the dominating role of a fast shear displacement of the stick-slip type in the regime of seismic energy release of a fault system. The tensile crack generation seems to be only of little—if not negligible—importance. On the other hand, the existence of tensile cracks in a fault system can play an important role in the course of subsequent loading cycles because the stick-slip displacements can take place not only along the primary faults but also along the planes of tensile cracks.A comparison of some results of model experiments and the already published results of geological and seismological investigations indicated that the way of seismic energy relase on faults in nature and in the laboratory could be of the same character. Several analogies between the seismic regime of a fault model and of real seismic regions were found concerning the morphology of faults, off-fault fore- and aftershocks, and earthquake doublets, respectively.  相似文献   

海南JX地区高精度重磁资料综合地球物理解释     

钟慧智  刘钦泉 《上海国土资源》1995,(2):27-37

根据高精度重磁资料，经过计算机各种方法处理及综合分析，可以查明盆地内大的断裂、火成岩及局部的构造展布。同时指出，长流断裂的下降盘是油气勘探有意义的地区。  相似文献   

综合物探方法在松辽盆地北部基底结构研究中的应用   总被引：3，自引：0，他引：3  

钟慧智  王家林 《上海国土资源》1995,(4):33-40

根据综合地球物理方法，查明松辽盆地北部基底的断裂２６条，其中岩石圈断裂６条，壳断裂５条，基底断裂１５条；盆地基底岩性由五种类型所组成一前寒武系变质岩、糜棱岩、下古生界变质岩、二叠系浅变质岩及花岗岩。为盆地演化及含油气性提供重要信息。  相似文献   

地下动态导体充电法高精度定量解释   总被引：2，自引：0，他引：2  

何裕盛 《物探与化探》2001,25(3):215-222

提供了动态导体充电法的高精度定量解释的原理和具体方法。  相似文献   

Lightning optical pulse statistics from storm overflights during the Altus Cumulus Electrification Study   总被引：2，自引：0，他引：2  

D.M. Mach  R.J. Blakeslee  J.C. Bailey  W.M. Farrell  R.A. Goldberg  M.D. Desch  J.G. Houser 《Atmospheric Research》2005,76(1-4):386

The Altus Cumulus Electrification Study (ACES) was conducted during the month of August 2002 in an area near Key West, Florida. One of the goals of this uninhabited aerial vehicle (UAV) study was to collect time resolved optical pulse data from thunderstorms. During the month long campaign, we acquired 5256 lightning generated optical pulses. Most of these observations were made while quite close to the top of the storms. We divided our data into two amplitude groups based on prior NASA U2 aircraft optical data and the pulse characteristics. The group of strong pulses with radiance greater than 2.1 mW m^{− 2} sr^{− 1} had mean and median 10–10% optical pulse widths of 770 and 740 μs, respectively, 50–50% pulse widths of 399 and 355 μs, respectively, and 10–90% risetimes of 292 and 260 μs. These values are very similar to the previous U2 based optical results The other group of pulses consisting of slightly more than a quarter of the total pulses observed had radiances less than the minimum values detected in the U2 study. These weak pulses were narrower than the strong pulses with 50–50% mean and median values of 199 and 160 μs, respectively. Only 12% of the flashes observed contained only weak pulses. The source of these weak pulses is unknown, but we suspect that some are artifacts of the close proximity of the aircraft to cloud top.  相似文献   

地质找矿过程中如何提高物探工作质量   总被引：5，自引：5，他引：5       下载免费PDF全文

高淑芳  崔军 《地球物理学进展》2005,20(1):97-103

本文从六个方面讨论了在地质找矿工作中如何提高物探工作质量，更好地发挥物探作用.这些问题均为作者在多年野外工作中遇到后加以总结.这六方面内容为：测网敷设，物探数据的观测及室内整理，资料成图，岩矿石标本的物性测定，物探工作方法选择，成果解释.  相似文献