DIRECT LOCATION OF OIL AND GAS BY THE SEISMIC REFLECTION METHOD*     

POH-HSI PAN  J. CL. DE BREMAECKER 《Geophysical Prospecting》1970,18(Z1):712-727

The seismic velocity of sedimentary rocks is determined by the porosity, the velocity in the matrix and that in the fluid. The last two are known experimentally. The velocity can be measured from the surface. By applying the time average equation we can find the porosity. If the only difference at two points is the nature of the fluid in one layer, the ratio of the reflectivities of the layer at these points determines the nature of the fluid; this ratio is equal to the ratio of the amplitudes at these points. The size of the reservoir can then be found. The method can be applied to both oil exploration and production. It is more accurate in the latter case because more information is available than in the former case. The method is also more effective in developing discovered fields than the conventional method of relying only on the geological structural configurations.  相似文献   

HOW AND WHERE TO SEARCH THE OLDEST MAN IN CHINA.     

P.TEILHARD DE CHARDIN 《地质学报》1926,(Z1)

During the summer of 1923, we were so lucky F. Licent and myself as to get, in three different places, the first records of the palaeolithic Man in China.  相似文献   

GEOLOGICAL STUDY OF THE DEPOSITS OF THE SANGKANHO BASIN.     

G.B.BARBOUR  E.LICENT  P.TEILHARD DE CHARDIN 《地质学报》1926,(Z1)

This paper offers a preliminary statement of the results of investigations carried out in the South Sangkanho basin, in the mountains some 80 miles to the NW of Peking. Important fossiliferous deposits found in this area throw light on the conditions ruling in N. China during the transition from Pliocene  相似文献   

LA CHINE EST-ELLE PLACEE ENTRE DEUX GRANDES FRACTURES DE LA CROUTE TERRESTRE ?     

PAR E.GHERZI 《地质学报》1925,4(2):81-86

Hest bien clair que toute reponse a cette question, sera du plus haut interet pour les geologues de la Chine, vu que les resultats de la geodesie semblent bien indiquer que la croute terrestre est divisee en plusieurs blocs independants, juxtaposes et equilibres isostatiquement.  相似文献   

REGULATION CONCERNING THE GRABAU MEDAL OF THE GEOLOGICAL SOCIETY OF CHINA     

PAR E.AHNERT 《地质学报》1925,4(2):95-97

Je me permets de soumettre a votre attention ce rapport, dont le sujet peut paraitre trop ordinaire—sur la decouverte d'une flore fossile. Mais dans les couches honilleres de la Russie de l'Extreme Orient et de la Manchourie du Nord, la decouverte de debris fossiles assez considerables pour per-  相似文献   

GEOLOGY OF NORTHERN CHIHLI AND EASTERN MONGOLIA.     

P.TEILHARD DE CHARDIN 《地质学报》1924,(Z1)

During the last spring (April-May 1924), we have, F. Licent and I crossed the Northern Chihli and the eastern part of the Inner Mongolia.  相似文献   

THE BASE OF THE PALAEOZOIC IN SHANSI.METAMORPHISM AND CYCLES.     

P. TEILHARD DE CHARDIN 《地质学报》1934,(1)

I had recently an opportunity for observing, along the western border of the northern Hoshan (Central Shansi), at the base of the Palaeozoic, a particularly clear section, in which several interesting features seem to be worth mentioning. This section, illustrated in the text-figure 1, was taken at the entrance  相似文献   

龙卷风的漏斗结构理论   总被引：4，自引：1，他引：3       下载免费PDF全文

刘式适  付遵涛  刘式达  许焕斌  辛国君  梁福明 《地球物理学报》2004,47(6):959-963

龙卷风是大气中风速和垂直速度极大的小尺度系统.本文用气压梯度力、惯性离心力、黏性力三力平衡的柱坐标(r,θ,z)下的大气动力和热力学方程组,求龙卷风的三维速度场(vr,vθ,vz),从理论上绘制出龙卷风的三维漏斗型结构.充分说明龙卷风由涡旋流和急流这两种流叠加而成,涡旋流是由惯性离心力造成的,急流是由水平辐合辐散而引起的强对流.龙卷风是在极端不稳定的大气层结中形成的.  相似文献   

Uncertainty estimates in broadband seismometer sensitivities using microseisms     

A. T. Ringler  T. Storm  L. S. Gee  C. R. Hutt  D. Wilson 《Journal of Seismology》2015,19(2):317-327

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CREATIVITY AND GEOGRAPHY: TOWARD A POLITICIZED INTERVENTION*     

SALLIE A. MARSTON  SARAH DE LEEUW 《Geographical review》2013,103(2):iii-xxvi

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