Advantages of Remote Sensing-Earth Science Assignment Help, Homework Help

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Remote sensing can be defined as the science of acquiring spatial, spectral and temporal information about any object, area or phenomenon through the analysis of data collected by special instruments that are not in physical contact with the objects, area or phenomenon which are being analyzed.

Applications of Remote Sensing

As with its different types of data, remote sensing can be used for application in several different areas as give below.

Meteorology

Remote sensing helps to measure atmospheric temperature, pressure, water vapour, aerosols and wind pattern. Meteorological satellites are vital in weather forecasting and warning services and identification of clouds. Because of their huge aerial coverage, meteorological satellite images can be used to track the weather systems and monitor them. This is particularly useful in monitoring severe weather systems like tropical cyclones.

Oceanography

Monitor the current systems and ocean circulation, measure ocean temperature, wave heights and ocean colour, track sea ice.  The  remote sensing data obtained can be utilized for understanding the oceans in a better way and for managing the ocean resources in the best possible way.  In coastal areas remote sensing is helpful for monitoring changes along the shoreline, tracking the path of sediment transport, and for mapping the features along the coast. The remote sensing data can be utilized for erosion prevention and coastal mapping.

Geology

 In geological field, remote sensing is used as a tool to extract information about the land surface structure, and composition, mapping of the geological structures, identification of rock type, mapping faults and structure, the ecology of a particular area, the resources contained in the area and the impact of human actions on the natural landscape. The remote sensing techniques are more effective and useful for understanding sedimentary basins and these remote sensing techniques also help to locate natural oil fields.

Hydrology

In hydrology, the techniques of remote sensing help in assessing water resources from rain fall, snow and underground aquifers. Remote sensing also helps in monitoring and mapping of wetlands, estimating soil moisture, measuring the thickness of snow, monitoring of lake and river ice, monitoring and mapping of floods, detection of change of delta/ river, mapping of drainage basin, watershed modeling, detection of irrigation canal leakage and irrigation scheduling.

Agriculture and Forestry

Remote Sensing techniques help in monitoring the vegetation types, their growth potential and sometimes the conditions conductive for vegetation. Remote sensing also monitors health of crops; maps soil moisture; helps in detecting forest type and monitors deforestation. Certain phenomenon, which cannot be seen by human eye, can be observed through remote sensing techniques. An example for this is that of the trees, which are affected by disease, can be detected by remote sensing techniques.

Glaciology

In glaciology, remote sensing helps to measure volume of ice caps, velocity of ice stream, and its distribution.

Geodesy

Remote sensing helps in measuring the figure of the Earth and its gravity field.

Disaster warning and assessment

Remote sensing techniques help to monitor floods and landslides, volcanic activity, earth quake, assessing damage zones from natural disasters.

Planning applications

Remote sensing techniques are used for mapping conservation zones; monitoring land use in urban areas and that of deforestation.

Military

Remote sensing helps in developing accurate maps for planning and monitoring the military communications and transportations and for monitoring movements of the ships as well as that of the troops.

Key words: Remote Sensing, Satellite, Deforestation, Ocean temperature, Aerosols, Irrigation.

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