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).
Survey Detail
Data locations listed below, or click on name to download.
MBARI provides these data "as is", with no warranty, express or implied, of the data quality or consistency. Data are provided without support and without obligation on the part of the Monterey Bay Aquarium Research Institute to assist in its use, correction, modification, or enhancement.
| Name (Grid Cell Size) |
Grid | Sun Illuminated Image | Acoustic Reflectivity Image (at 1/2 grid cell size) |
| hilo2puna 20meters | grids\hilo2puna.asc.gz | geoTIFFS\sunshade\hilo2puna.tif | geoTIFFS\backscatter\hilo2puna.tif |
| hilo2punb 20meters | grids\hilo2punb.asc.gz | geoTIFFS\sunshade\hilo2punb.tif | geoTIFFS\backscatter\hilo2punb.tif |
| punaa 30meters | grids\punaa.asc.gz | geoTIFFS\sunshade\punaa.tif | geoTIFFS\backscatter\punaa.tif |
| punab 30meters | grids\punab.asc.gz | geoTIFFS\sunshade\punab.tif | geoTIFFS\backscatter\punab.tif |
| punac 20meters | grids\punac.asc.gz | geoTIFFS\sunshade\punac.tif | geoTIFFS\backscatter\punac.tif |
| punad 10meters | grids\punad.asc.gz | geoTIFFS\sunshade\punad.tif | geoTIFFS\backscatter\punad.tif |
| Click on thumbnail to view larger image | |
 Map view 1 |
 Map view 2 |
 Oblique view 1 |
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| Index Map | Haleakala | Hilo | Kohala | Loihi | Mahukona | Moloka`i | Ni`ihau | Papa`u | Puna Ridge |