14. Visualizing the Bay Floor

Main Menu
Expedition Menu
1. Welcome

2. The Idea

3. Boarding

4. Ship Tour

5. Back Deck

6. Preparing to Depart

7. Leaving

8. Meeting

9. Bay-Delta-Estuary

10. Navigating

11. The Survey

12. First Data

13. The Mosaic

14. Visualizing

15. Hazards

16. Disposal Site

17. Sediment Map

18. Compare
19. Future Studies
20. Final Meetin
 
 
Contact
Don Reed
Dept. of Geology
San José State
University

 

 

Now that we have finished the survey, we put the data through a sequence of image procesing methods shown at the left (you do not need to remember these). We can next use any of several visualization methods to construct images of the seafloor.



Let’s look at some examples below:

 

 

Image courtesy of USGS
Click on Each Type of Map to See Example

 

is a map showing lines of equal water depth, like a series of bath tub rings, each separated by a specific increment of water depth
is a shaded relief map, almost like a photograph, with sun-angle just above the horizon to produce a combination of highlighted areas and shadows
is a more sophisticated version of the contour map, where the water depths between the contours are assigned colors for specific ranges of water depths, combined with shaded relief
is like a shaded relief map and colored bathymetry, but now viewing from an angle rather than straight down
represent different oblique perspective views of shaded relief map and colored bathymetry map

 
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