Publication Date:
2019-07-13
Description:
Radar image time sequences of three areas were obtained to illustrate the capability for change detection over time intervals that range from two to fourteen years. The image sequences show geomorphic changes caused by volcanic eruption at Mount St. Helens, Washington, changes that have resulted from mining activities in the Sierrita Mining District, Arizona, and differences in the Ikpikpuk River drainage area, Alaska, that are mostly dependent on imaging system characteristics. Enhancement, suppression or distortion of features on the images are related in each case to interaction between the illumination geometry of the imaging system and the characteristics of the terrane surface. The radar images are contrasted with Landsat multispectral scanner images to illustrate the importance of resolution and shadowing for feature perception.
Keywords:
EARTH RESOURCES AND REMOTE SENSING
Type:
Remote sensing: An input to geographic information systems in the 1980; Oct 18, 1981 - Oct 21, 1981; Sioux Falls, SD
Format:
text
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