Puna Ridge Survey
The Puna Ridge survey was conducted to obtain higher-resolution bathymetry than previously available from SeaBeam surveys (Clague et al., 1994, 1995). The new bathymetry shows details such as cones with craters at 3,000 meters depth. Several cones along the shallow part of the rift zone are flat-topped cones (Clague et al., 1999, in press), but most of the volcanic vents are small cones with craters or linear ridges parallel to the rift. Several low cones with large craters occur in shallow water and may have formed by hydromagmatic explosive eruptions. The evolution of Hawaiian rift zones, based on these Simrad surveys, is briefly discussed in Reynolds et al. (1998).
| Click on thumbnail to view larger image | |
 Map view 1 |
 Map view 2 |
 Oblique view 1 |
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| NOTE: In the images above the deepest parts of the survey have a gain problem in the backscatter data that leads to poor tonal matches from line-to-line. These differences have been fixed in the data files included on this CD-ROM set. |
| Index Map | Haleakala | Hilo | Kohala | Loihi | Mahukona | Moloka`i | Ni`ihau | Papa`u | Puna Ridge |