# Remote Sensing Environmental Science

#### nformation

Movement of debris cloud, Day 1.

#### Question 4

Day 1 Position and Distance Traveled: Find the center of the cloud as best you can. Remember that each pixel is not a point but rather a large square that covers a significant area.

Record the specific latitude and longitude coordinates, because you will need them at the end of this section to determine how far the cloud traveled this day. Choose the best range of coordinates from below.

a) Latitude b) Longitude

Question 4 options:
 a Lat = 20 – 25N; Long = 110 – 115W b Lat = 11 – 14N; Long = 110 – 115W c Lat = 15 – 16N; Long = 120 – 121W d Lat = 11 – 15N; Long = 125 – 130W

#### Question 5

Day 2 Position and Distance Traveled:

Find the center of the cloud as best you can. Remember that each pixel is not a point but rather a large square that covers a significant area.

Record the specific latitude and longitude coordinates, because you will need them at the end of this section to determine how far the cloud traveled this day. Choose the best range of coordinates from below.

a) Latitude b) Longitude

Question 5 options:
 a Lat = 9 – 13N; Long = 90 – 95W b Lat = 9 – 13N; Long = 95 – 105W c Lat = 5 – 8N; Long = 95 – 105W d Lat = 9 – 13S; Long = 105 – 110W

#### Question 6

Day 3 Position and Distance Traveled:

Find the center of the cloud as best you can. Remember that each pixel is not a point but rather a large square that covers a significant area.

Record the specific latitude and longitude coordinates, because you will need them at the end of this section to determine how far the cloud traveled this day. Choose the best range of coordinates from below.

a) Latitude b) Longitude

Question 6 options:
 a Lat = 9 – 13N Long = 95 – 105W b Lat = 7 – 10N Long = 88 – 95W c Lat = 7 – 10N Long = 95 – 105W d Lat = 0 – 5N Long = 85 – 95W

#### Information

Calculating Distance Traveled

Compare the images and note how far the cloud traveled. To do this, note that the images have a latitude and longitude grid where the distance between each pair of latitude or longitude lines represent 10°. For the circle of latitude that passes through the volcano, each degree of longitude is equal to 108 km.

(Since the distance traveled north – south is not as great as the distance traveled east – west, we will disregard that distance for this section.)