This report briefly introduces the results of Yellow River valley application of remote sensing technique in analysing the stability of regional structure of irrigation projects, in landuse inventory, in soil and water conservation in- vestigations, in investigating the Change of channel, in investigating the variation of Yellow River Mouth and in compiling the make of photolinear.
The multisource geoscientific-data are comprehensively analysed by means of the computer image analysis technique and the resources evaluating method of concept pattern. We can obtain the varied geological anomalies and comp- rehensive information, establish the ore guides of prespecting and concept pattern for a variety of metal mineral deposits, find the clues of prespecting, select prespecting targets. and reevaluete the old ore-fields and minerogenetic areas being searched. We combine the two types of new technique of multi-variate statistic and digital image processing. the multi-factors statistic fealure and results of comprehensive model from the geophsical. geochemical. remote sensing and geological data, etc., are presented by the special thematic images and graphys. In every minerogenetic-areas. it is reappeared that the tectonic framework, shape and attitude of magmatic rock, lithological strata, mineralizing anomalies. and their inter-relationship and spatial distribution charactor. The reliable scientific basis is provided for analysing the minerogenetic geological environment of special areas, studying the feature of tectonic magmatic activity, revealing the relationship between the deep tectonics and the minerogenetic, establishing the guides of comprehensive interpreting and extracting the new comprehensive secondary information.
This paper makes an analysis of geological hazard phenomena and the fa- ctors of environmental geology in an area about 5000 km2 along Baoji-Chengdu railway line(Baoji-Mianyang section). The analysis was made on the basis of interpretation of more than 4400 airphotos of different periods and 5 satellite pictures, incorporated with the referencing of the predecessors’ literatures and field investigation data, and also by means of computer technique and optical image processing. The author expounds as concisely as possible the law of geological hazard distribution and development, and its correlation with geological environment. Also, the author produces some important suggestions and preventive measures in connection with the geological hazards which exist along the railway line.
Explained in this paper is guided by the study of the rule of gold minealization and prerequiste of prospecting. In this work, we used the remote sensing combined with the geophysical and geochemical data to extract the, useful information of mineral-formation concerned, and by means of the establishment of synthetic elements of interpretation, the three dimensional synthetic interpretation, the analysis of mineral-formationg geological condition. the mathematic statistical and quantitative calculation of controlling factors as well as the determination of the best factor combination of mineralformation and image elements to delineate the minerogenetic prospecting area and point out the possible spatial location ,of industrial deposit. Finally, by way of the field synthetic verification, we attained the aim of prospecting of gold deposit. We also studied and probed into the theory and methods of remote sensing technology for the exploration of gold deposit and have obtained a good results.
Through petroleum geological interpretation of the first generation of land satellite images of China and research of other data such as geological, geophysical data and landsat MSS images from the U. S. A. We may analyse the forming mechanism of the image anomalies and give some new ideas for the further exploration of Yakela oilfield in Northeastern area of Tarim Basin. According to our work, we may get the conclusion that the southeastern region of Tarim Basin is also a favourable potential area for oil and gas exploration.
This article introduced the method of studying the conditions of forest site by means of the technique of Remote Sensing. Discriminated the type resinous and group of forest site in yichuan county. Analyzed the dominant factors(slope direction, slope angle, soil and geomorphology. ologect.) in dividing the type of forest site by Remote Sensing, and also explained the method of map drawing.
Since a city has a typical--homogeneity and its elements are small, the differences between the remote sensing of the urban ecosystem and the natural ecosystem are remarkable. The factors affecting urban remote sensing such as spectral signatures of artificial materials, mixed pixels, the haze factor, the edge sharpness and photographical blind angles are discussed in this paper. The criteria chosen for Sensors, photo scale, resolution, lateral overlap and temporal are demonstrated as well.
Lianyungang Port, located on the middle part of west coast of Yellow Sea, is a important commercial port with the Liandao island as a natural defence. As a result of tae effort to enlarge the handling capacity, a plan has been drawing to construct a west sea wall, with a length of 6700m, linking the west end of Liandao island to the continent for protecting port area from the silting up and the wave. Dynamic analysis with Multi-temporal Aerial images shows that the sea course of the river mouth on the east side of Lianyungang port is shifting to the west, so is the river mouth density current. They have revealed the exsistance of the coastal current, from the East to the West. The analysis of Landsat MSS images has indicated that the coastal current is trending from the river mouth of abandoned Yellow River to the Lianyungang area, bringing the mud and sand to the Lianyungang area. In Lianyungang area, there exists a dextrorotatory current field which gurrentee the passing through of mud and sand. The construction of the west sea wail would destroy the current field, block the mud--sand current, resulting in a large amount of mud-sand depositing in the port area and bringing harm to the port.
The CASI is a newly developed second generation imaging spectrometer. The CASI operates in the 400-900nm spectral range, providing a spectral resolution of 1.8 urn and an image of 578 pixels. The CASI is a flexible and portable remote sensor that can be used in both the laboratory and in the field. This paper discribes briefly the elementary construction and the operating mode of the CASI. Its special features are also included.