Our day with the LiDAR was fascinating because we had permission to hike off trail when a lot of other people never get the chance to do that. We learned that there were 160 ponds and 640 hummocks that formed after the eruption. Our first off trail mission was to sketch a landslide area, then we hiked to the Toutle River and set up many fun and expensive instruments. Today on the hike we scanned the hummocks and got scanned by a LiDAR laser that made a 3D image. The LiDAR made the 3D images by shooting lasers around the Toutle River and then taking pictures. Using a different laser technique we were able to calculate the distance to objects. We used a program to put the images together to create the 3D image. Back at Coldwater we listened to a presentation from Mike, saying that with the 3D images they could filter out the trees so that he could see more of the ground. They used LiDAR to get the location of all the pictures they take for google maps, for when you go to street view.

While the laser scanned the area for three minutes we had to stand still and not move. The LiDAR couldn’t scan behind some objects and that’s where the giant black shadow comes from.
Another view of us trying to stand still for three minutes while the LiDAR scanned us.
The whole area we were at; it was call Toutle River.
The scale on the right side shows the intensity of the photo and what the intensity means. The colors on the scale correspond with the colors in the photo.
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