Biomedical Engineering Reference
In-Depth Information
Fig. 1
Map of study area
plain along with traces of flat alluvium and dealluvium-proalluvium. The area is
characterized by hot summer and very cold winter. During July to August, the
average daily maximum temperature sores up to 40 C in western Kazakhstan and
in winter temperature falls below -6 C. Average annual rainfall is less than
100 mm.
Materials and Methodology
Satellite Data Used
In the present study, Landsat7 ETM+ thermal band data of two different dates (29
May 2001 and 01 Aug 2001) of acquisition was used. The ETM+ includes new
features that make it a more versatile and efficient instrument for global change
studies, land cover monitoring, and assessment and large area mapping. The
special feature of this sensor is its capability to provide thermal data in 60 m
spatial resolution and in both high and low gain mode.
Landsat ETM+ thermal bandwidth is given below.
Band number
Spectral bandwidth (lm)
Ground resolution (m)
61 (low gain)
10.400-12.500
60
62 (high gain)
10.400-12.500
60
Landsat has 185 km swath, temporal resolution of 16 days, quantization of 8
bits, equatorial crossing time is 10:00 am.
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