Hawaiian Islands 50-Meter Bathymetry and Topography Grid

A 50-meter resolution gridded synthesis of bathymetry and topography for the main Hawaiian Islands, compiled by the Hawaii Mapping Research Group at the University of Hawaii. It integrates ship-borne multibeam sonar surveys, global seafloor topography models, and USGS land elevation data.

Use Cases

• Model coastal inundation and sea-level rise impacts by analyzing the integrated bathymetry and land topography grid.
• Analyze seafloor geomorphology using the synthesized multibeam sonar survey data and global topography models.
• Create 3D visualizations of the Hawaiian seafloor and islands from the 50-meter resolution digital elevation model.

Strengths

• High-resolution 50-meter grid cell size for detailed spatial analysis.
• Integrates multiple authoritative data sources including ship-borne multibeam sonar and USGS DEMs.
• Synthesizes both ocean bathymetry and land topography into a single continuous model.

Limitations

• The specific temporal range of the source surveys and data is not provided.
• Data quality and consistency may vary across the region due to the synthesis of multiple source datasets.

Provenance

Source

Hawaii Mapping Research Group (HMRG), School of Ocean and Earth Science and Technology, University of Hawaii at Manoa.

Collection Method

Gridded synthesis of available bathymetry data, including multibeam sonar surveys and global seafloor topography models, combined with USGS land DEMs.

Freshness

Last updated in October 2023.

Geography

Main Hawaiian Islands, Central Pacific Ocean.