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6 Cards in this Set
- Front
- Back
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What data considerations do you need to make when using remote sensing to assess environmental change? |
Level of detail Frequency of re-visit Region of the electromagnetic spectrum Temporal dimension |
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Why is spatial detail important to consider? |
More detail generally implies less area covered by single image and bigger file size. >25m suitable to detect amount of forest lost or gained in an area. <1m is needed to detect changes at single tree level |
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Why is temporal detail important to consider? |
To detect fire scars (16 days) or crop green-up or fire progression ( |
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What decade saw an increase in the use of aerial photography in Canada? |
1914-1918 (WW1) |
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How can aerial imagery help urban planners? |
Answers on space-oriented questions: Urban morphology Urban growth Monitoring traffic Assessment of population |
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List three attributes of fire that can be detected from remote sensing? |
Fire progression Burned areas Vegetation recovery |
