This image was generated using the 30 meter resolution Digital Elevation Model (DEM) data. DEM data for fifteen different quadrangles were digitally mosaicked to cover the same area covered by the Landsat TM images. These data were color coded to show the elevation range from 4700 to 9900 feet; pixels with elevation values below 4700 feet (purple) are black and pixels with values greater than 9900 feet (red) are white. The DEM image covers the same area covered by the Landsat TM images shown in Figures 1 and 2, and it has been geometrically registered (matched) to the TM images. Several landmarks that can be seen in the image are: San Francisco Peaks at the top of the image, Anderson Mesa and Lake Mary graben just right of center, and Oak Creek Canyon at the bottom left.

This image was generated using the 30 meter resolution DEM data shown in Figure 4. Once a DEM for an area is generated it can be used as input to various enhancement and analysis procedures. One of these procedures allows us to generate a 'shaded relief' image with the sun positioned at any desired elevation and azimuth. A shaded relief image enhances the topographic structure in the data and is very useful for extracting spatial information dealing with surface fractures, faults, and drainages. Several landmarks that can be seen in the image are: San Francisco Peaks, Mount Elden, Anderson Mesa, Lake Mary, I-17 graben, and the Oak Creek Canyon fault. Notice the enhancement of the regional topographic structural patterns, including the high density surface fractures around the Lake Mary area. This image is at the same scale as the Landsat TM images shown in Figures 1 and 2.

This image was generated using the 30 meter resolution DEM and shaded relief images shown in Figures 4 and 5, respectively. By digitally combining these two products it allows the elevation information shown in Figure 4 to be displayed with the structural information contained in the Figure 5 shaded relief image. The landmarks identified in Figures 4 and 5 can also be seen on this combined product.

This image was also generated using the 30 meter resolution DEM and shaded relief images shown in Figures 4 and 5, respectively. The DEM data were used to introduce parallax into the shaded relief image in the horizontal direction to generate a stereo image. The topographic/3-D component can be viewed by using the red and blue glasses (red on the left). This is an excellent way to study and analyze the topographic component of an area and show the regional structure. Note that both the Lake Mary graben and surrounding surface fracture system show up nicely in this image. Both the graben that I-17 follows to the south, as well as the Oak Creek Canyon fault that parallels the graben, are easily seen on this image. The San Francisco Peaks and part of the cinder hills east of the peaks are shown at the top of the image.

This image is a subset of the DEM image shown in Figure 4. It shows the Lake Mary area with an enhancement of elevations ranging from 6450 to 7550 feet. This area is shown at a larger scale/zoomed in compared to the image in Figure 4; the area contains several interesting structural features dealing with possible ground water resource information. Landmarks that can easily be seen include the Lake Mary graben, Anderson Mesa, Walnut Canyon, and the southern part of Mount Elden at the top of the image.

This image was generated using the 30 meter resolution DEM data shown in Figure 4, but shows the zoomed-in Lake Mary area shown above in figure 8-A. The zoomed-in Lake Mary images show the level of detail that can be extracted from these data. This area is used because of the amount of interesting structural patterns in the area, and their protential relation to ground water.

This is the same image product shown in Figure 6 (DEM plus shaded relief), but for the zoomed in area shown in Figures 8-A. Again, by digitally combining the DEM and shaded relief data we can show the elevation and structural information on a single image. The same landmarks identified in Figure 8-A can also be seen on this image. Keep in mind that the DEMs have been enhanced to optimize the elevation range in this area, compared t the entire region in Figure 6.

This is the stereo image that goes along with the Lake Mary area subimage shown in Figures 8 and 9; basically a zoomed in portion of Figure 7. Again, the DEM data are used to introduce parallax into the shaded relief image in the horizontal direction to generate the stereo image. The topographic/3-D component can be viewed by using the red and blue glasses (red on the left). As mentioned earlier, this is an excellent way to study and analyze the topographic component and regional structure of the area. Note how well the Lake Mary graben and surrounding surface fracture system show up.