Remote Sensing Application and Research Development in Guangdong Province over past ten years
Comprehensive Aerial Remote Sensing investigation of Guangzhou City
Comprehensive aerial remote sensing investigation of guangzhou city was a large scale application project involving many fields with support of provincial and municipal government about 150 technicians from 20 units in Guangdong Province were organized to take part in the investigation .Investigations of 25 items including city construction status geologic background natural resources and ecologic environment of Guangzhou city were conducted using black and white panchromatic aerial photograph infrared color films and natural color aerial photographs images of various types and scales as well as tables and figures of other type were produced providing scientific basis for urban planning construction and management departments of Guangdong in perfecting the general and distinct planning rational transformation of old city areas and acceleration of environmental of urban data bases according to statistics relevant findings of this investigation have been used by more than 100 units with good results.
Geologic Application
Remote sensing method has become an indispensable means regional geologic survey it has been used by 12 field survey teams under the guangdong province geological and mineral bureau though vegetation coverage in Guangdong is extensive utilization of remote sensing images in analyzing geologic structure still has outstanding benefits it also effective to certain degree in litho logy division and in research on ancient volcanic structure and buried intrusive rocks popularization of this technique can save a lot of survey cost.
In mineral deposits data projecting research has been carried out on method of using infrared narrow band spectral remote sensing to search for minerlized altered rocks in cooperation with other units this method has been effective in prospecting for gold by way of satellite digital image processing study of image modes of typical mining areas and geologic structure analyses target mining areas were identified and prospecting of metal minerals and hidden coal fields were carried out under effective guidance remote sensing images interpretation is also used in directing ground water survey subsequently ground water wells drilling rate is raised utilization if aerial thermal infrared remote sensing technique to identify the sulphur and uranium mineral beds is proved to be effective to some extent besides study of seismic tectonics and environmental gelogy using images of satellite SAR has been achieved some results.
Apllication in Water Conservancy and Hydrology
Lingdingyang Bay is one of the main outlets of a peral river due to serious sedimentation and continuous growth of nudflats navigation channels are gradually silted up and flood disposal capacity is reduced further more reclamation of mudflats is increasing in recent years it there fore urgent need to make unified planning and comprehensive improvement for Lingdingyang bay. for this purpose multi temporal land sat TM and MSS data of as long as 16 dynamic have been used analyze and study the changes in sourcing and silting regime water processing in this way plentiful data have been acquired for improvement and development of Lingdingyang the relevant dynamic state monitoring has been taken as an effective rout line method and is under continuous use.
the national soil erosion survey was a priority assigned by the state a large amount of man power and funds would be required if conventional method was to be used the soil erosion survey of the pearl river basin including Guangdong Province was carried put using remote sensing image interpretation plus a small amount of field work. the survey tasks were finished in an experiment and economic manner the erosion modules and amounts were calculated and soil erosion intensity and grade classified on sectional basis this survey has yielded good results and the official results are in the press.
During feasibility study of Fail ixia water control project aerial infrared color photography was specially made for the reservoir and damsite area which in combination with TM NOAA data provided abundant data for engineering geological study of the reservoir and dam site the reservoir inundation investigation and dam site selection.
