Because the Surface-Waters are polluted with different pollution types and degrees, the characteristics of reflectance spectrum for them are different. These differences can be actually recorded on the color aerophotograph by the form of color density difference. The correlation between the reflective color density ratio of the surfacewater image on the color aerophotograph and the combined pollution index of the water is emphatically studied in this paper. The statistical relationship between them is given. so, It is possible to determine semiquantitatively the combined pollution degree of the surface-water based on color aerophotograph.
This paper introduces briefly some successful applications of satellite image for investigating on the Nanning’s geologic environment. They will be of great value to the estimation of crustal stability. They are: A. It is found that, Nanning lies in the fault basin of northeast rhomb. B. It is found that there is a fracture passing the west of YongjiangRiver No. 1 bridge. C. It is proved through investigation that the northwest fracture system is a long-term active fracture and it has close relation with earthquakes in this area.
The earthquake disasters in Nanchang-Gengma epicenter area, which mainly were the crashed houses and the rockslides, were surveyed by airborne remote sensing. 6500 crashed houses were interpreted and 392 rock slides were measured with the aerial colour infrared film. The biggest rock slide in earthquake area,located from Shifudong to Jinglie in Gengma county, was about 1.64×106m3. According to the statistics of the crashed houses and the rock slides, the degree of the crashed houses and the distribution of the rock slide were charted respectively. The results show that the earthquake disaster can be surveyed accurately by airborne remote sensing in a short period of time after shock.
The Interpretation principles of the remote Sensing image of a Subtle type of oil gas reservoir relevant to Compaction folds have been discussed in this paper. According to the formation mechanism of a Compaction fold, the state of stress distribution in its overburden, generated by Compacting, and the structural change affected by the force of the tectonic movement soon afterwards are analysed. This paper proposes that a series of particular fractures may appear, accompanying the formation of a Compaction fold. These frac- tures not only provide room for the storage of oil and gas but also form distinctive fracture patterns. When the fractures are weathered and eroded, they may evolve typical geomorphic features. These features Can be recognized on the TMimages, by utilizing the advantages of the multispectrum and high resolution of TMimages. Therefore the features of a subtle type of oil-gas reservoirs, generated by buried hills. reef-mounds. elastic limestone bodies. pure sandstone bodies and salt domes, Can directly be interpreted on the TMimages.
Multitemporal spectrum data of wheat with high resolution have been processed using a digital derivation algorithm and their properties of red edge shifting toward long wavelenth have been extracted. Relationship between red edge shift and spectral resolution. growth period. chlorophyll content in leaf and coverage rate for wheat have been analysed. And then an optimal season to detect the properties of red edge shift have benn proposed,
Comparing with satellite borne MSSor TM, Airborne Multispectral Scanner (AMSS)has unique characteristics: Line-scanning rotating mirror type with large field of view, lower flying altitude and poor stability of movement and orientation of the platform. Therefore, the effects of various disturbing factors on AMSSimage are severe and geometric distortions caused by these factors in AMSSimages are more complex. Geometric correcting rot only is difficult, but also accurate and effective geometric correction cann’t be done according to imaging geometric mode of satellite borne MSSor TM. This paper quantitatively analyzes effects of various factors on geometric characteristics of AMSSimage in details, it is helpful to develop the method for correction of geometric distortions in AMSSimage.
This paper derives formulas which solve View Angle (β) and Distance from satellite to scence center (D) by using SPOTsatellite Auxiliary Data. Furthmore, according to SPOTsatellite Data, it demonstrates and analyses the formulas correctness and its precision.
Oil and gas move mainly in lateral way in the deep subsurface. Having accumulated in reservoir bed, the reservoir is turned into a geological gradient body with high temperature and pressure. The direction and mode of the oil and gas movement vary significantly in the gradient body, and the movement becomes in vertical way with the micro-Seepage and the diffusion in domination. Oil and gas have Chemical reation with the overburden rock. Under the condition of the chemical reaction, a pillar body with reduced geological environment can be formed above the oil and gas area, and this brings a lot of new materials and minerals, which directly influence the electromagnetic spectrum of the materials on the ground. This is the reason that the special image ano- malies on remote Sensing pictures for oil and gas micro-Seopage are showed.