1 Subjects: “...expert survey...”

2 Subjects: “...citizen surveys...”

3 Subjects: “...questionnaire survey...”

4 Subjects: “...nationwide survey...”

5 Subjects: “...daylight survey...”

6 Subjects: “...beach surveys...”

7 Subjects: “...seismic survey...”

8 Subjects: “...drone survey...”

9 Subjects: “...drone survey...”