ABSTRACT Rapid population growth and increasing economic activities have resulted in unsustainable exploitation and rapid decline in the spatial extent of forest reserves in Nigeria.
One of the emerging scenarios in Indian geography in recent years has been the use and application of Remote Sensing and GIS in geographical studies and researches.
It has opened a new research frontier in Indian geography. Weather and Climate Change: New developments are taking place in estimating sea surface temperature and modeling the methane emission using MODIS, the multipurpose INSAT 3A provides vital information for a detailed monitoring of the weather and an accurate forecasting.
The installation of data collection platforms DCPs and the Disaster Warning Systems DWSs has been done for transmitting methodological data on the one hand and for tracking the path of cyclone on the Andhra Coast on the other hand.
They also provide information imageries. Significant information has been consistently received at the meteorological headquarters and centres of global climatic change on forest diversity from the satellite signaling and imageries.
Space Application Centre is continuously monitoring glaciers in order to observe climate change impacts. Remote sensing data are being used for mapping potential glacier lake outburst floods GLOF in the Himalayas. Aerial photographs are an effective tool for geological, geomorphological, relief and hydrological studies and land-use mapping.
These geomorphic units have different physical potential and provide a sound base for land-use planning. Other application includes remote sensing study in identifying wind erosion areas.
Remote sensing techniques have been applied for geomorphic and land-use mapping of larger areas of Assam. Based on aerial photographs, a study of Hiran catchment Jabalpur districthighlights the physical and hydrological characteristics of the area, using quantitative analysis for land resource development and management.
GIS has been used for soil productivity assessment and mapping. Drought monitoring is an important aspect of satellite monitoring in Maharashtra. A GIS has been initiated by the Geological Survey of India for locational and distributional identification of various kinds of rocks and mineral deposits.
Hydrology and Water Resources: Targeting ground water in hard rock, using remote sensing and GIS, is a recent phenomenon in hydrological science. In India, remote sensing is used for monitoring the aspects such as measurements of evapo-transpiration, measurement of water surface roughness, rainfall distribution and infiltration, ground water discharge and salt content of water and light absorption.
Aerial photographs have been utilised to collect information regarding water storage, season and long-term fluctuations of lake and river surface aerial extent, assessment of underground and soil moisture.
Estimation of surface temperature of snow has been assumed through GIS technology.
The weather satellite imagery is usually used to monitor ice and snow cover conditions providing important inputs for water management and flood prediction. In recent years, microwave sensor data is being used for flood monitoring during cloud cover condition.
The sustainable benefits from coastal marine resources require considerable improvement in the application of remote sensing imageries to improve both utilisation and management of these resources. Assessment of grassland and their changes with time has been greatly facilitated by using remote sensing and GIS technology.
It is through remote sensing that the actual forest covers of India were known through findings of satellite data analysis. The first attempt to categorise forest cover types by computer analysis of Landsat data was done in for Nagaland. In a study conducted by NRSA, the satellite digital image covering entire Periyar-Thodupuzha drainage basin was analysed.
Apart from forest land classification, stock mapping and volume estimation, remote sensing is also used for damage assessment and fire detection, which is a common feature of Indian forests.The Indian Space Research Organisation (ISRO) is planning to study Venus from an elliptical orbit that is closest to the planet at km and 60, km at the farthest end – .
International Journal of Remote Sensing Applications Vol. 2 Iss.
4, December 82 Analysis of Forest Cover Change Detection Eric K Forkuo1, Adubofour Frimpong2 Department of Geomatic Engineering, Kwame Nkrumah University of Science & Technology. Change Detection Techniques - Free download as PDF File .pdf), Text File .txt) or view presentation slides online. Change Detection Techniques with Practical examples.
Spatiotemporal fusion of remote sensing data is essential for generating high spatial and temporal resolution data by taking advantage of high spatial resolution and high temporal resolution imageries.
imageries. GIS software is used to prepare the thematic maps and pulverized truth clarifications were also completed to check through GIS techniques even if the subsequent spatial Change Detection Using Remote Sensing and GIS Techniques - A Case Study of Golaghat District of Assam, India.
International Research Journal of Earth Sciences. Applications of Remote Sensing Techniques in Mineral Exploration Introduction.
Remote Sensing is the science and art of acquiring information (spectral, spatial, temporal) about material objects, area, or phenomenon, without coming into physical contact with the objects, or area, or phenomenon under investigation.