Mapping of wastelands of Kolar district using false colour composites of thematic mapper (TM) data

1988 ◽  
Vol 16 (4) ◽  
pp. 37-42
Author(s):  
C. R. Shiva Prasad ◽  
R. S. Reddy ◽  
T. R. Srinivasan ◽  
Prabhakara
Keyword(s):  
Thematic Mapper ◽  
False Colour

Comparative performance of thematic mapper middle-infrared bands in crop discrimination

1996 ◽  
Vol 17 (9) ◽  
pp. 1727-1734 ◽  
Author(s):  
V. K. DADHWAL ◽  
J. S. PARIHAR ◽  
T. T. MEDHAVY ◽  
D. S. RUHAL ◽  
S. D. JARWAL ◽  
...  
Keyword(s):  
Thematic Mapper ◽  
Comparative Performance ◽  
Crop Discrimination ◽  
Middle Infrared

scholarly journals Discrimination of Cabbage Fields for Detecting Clubroot Disease Damage Using Landsat Thematic Mapper Data.

1992 ◽  
Vol 61 (3) ◽  
pp. 527-535 ◽  
Author(s):  
Yoichi TORIGOE ◽  
Tetsuro AMANO ◽  
Kei OGAWA ◽  
Michikazu FUKUHARA
Keyword(s):  
Thematic Mapper ◽  
Landsat Thematic Mapper ◽  
Clubroot Disease ◽  
Thematic Mapper Data ◽  
Disease Damage

Landsat Views of Sudbury (Canada) Area Acidic and Nonacidic Lakes

1992 ◽  
Vol 49 (S1) ◽  
pp. 33-39 ◽  
Author(s):  
J. Roger Pitblado
Keyword(s):  
Thematic Mapper ◽  
Landsat Data ◽  
Multivariate Statistical ◽  
Temporal Dimension ◽  
Acidic Lake ◽  
Water Colour ◽  
Statistical Procedures ◽  
Changes Over Time ◽  
Radiance Data ◽  
Over Time

Multivariate statistical procedures are used to establish empirical associations between acidity, visual lake water colour, dissolved organic carbon (DOC) concentrations, and Landsat-5 Thematic Mapper (TM) radiance data. Acidic lakes in an area northeast of Sudbury (Canada) are characterized by their clear, blue colours and very low DOC. With a subjective, three-class water colour grouping, 92% of the study lakes were correctly classified using TM data. Further, it is shown that DOC, the major component of water colour in this area, can be predicted within 1 mg/L of observed concentrations using TM data (multiple r = 0.93, P < 0.01). By deriving interrelationships between pH levels, water colour, and DOC, Landsat data provide a means to discriminate and map the acidic and nonacidic lakes of the study area. Examination of the reflectance characteristics of a single acidic lake (Bowland Lake) that has undergone neutralization suggests that Landsat data may be used to detect optical changes over time. However, the capability for monitoring the temporal dimension of lake acidification using satellite data has yet to be established.

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