Question

The spatial resolution of imagery recommended for assessing the damages of cultural features due to flood disaster is:

• A. \(\text{20 m} \)
• B. \(\text{30 m} \)
• C. \(\text{60 m} \)
• D. \(\text{90 m} \)

Hint:

30m spatial resolution (e.g., Landsat data) is commonly used for disaster assessment and damage evaluation.

Answer 1

The Correct Option is B

Step 1: Understanding spatial resolution for disaster assessment. - Higher-resolution imagery is preferred for assessing damage to cultural features. - 30m spatial resolution (e.g., Landsat) provides sufficient detail for large-scale disaster assessment.
Step 2: Explanation of incorrect options. - 20 m a.: Higher resolution, but 30m is more widely used. - 60 m c. and 90 m d.: Too coarse for cultural damage assessment.
Step 3: Selecting the correct option. Since 30m resolution (e.g., Landsat) is widely used for flood damage assessment, the correct answer is b. 30 m.