1. Bathymetry: Mapping the Sea Floor
So why do we map the sea floor?
What do we want to know (2 general things)? 1

2. 2

4. Multi-beam SONAR Swath
Click on this image to run the animation.
The swath of the beam is equal to 3 times the depth being mapped. E.g., if you are multi-beam mapping at 1,000 feet deep, the swath of soundings would be 3,000 feet wide. 4

5. Deploying Side-Scan SONAR5

6. Multi-Beam SONAR 6

7. Seamounts off New England
                                                                           
Seamounts off New England
     

8. Seamounts off New England
False color map

9. Bathymetric contour map of Davidson Seamount, showing dive tracks.9

10. Hudson Canyon 10

11. Hudson Valley, NY
      11

12. Alderdice Bank Gulf of Mexico12

13. Galapagos Rift Spreading Center13

14. Mid-Ocean Ridge System EARTH’S LONGEST MOUNTAIN RANGE (35,000 MILES) 2/3 of Earth’s surface formed at mid-ocean ridges 14

15. Side-Scan SONAR Ring of Fire ’03 Expedition15

16. MATCH THE 3-D BATHYMETRIC MAP with Its raw data
A: Hudson Canyon
B: Blake Ridge
C: Loihi Seamount

17. Hudson Canyon

18. Blake Ridge

19. Loihi Volcano Bathymetric map of
Hawaii’s youngest volcano off the southeastern coast of the Big Island of Hawaii 19

20. Loihi Seamount 20