Document Title - Geoscience Australia
Document Title - Geoscience Australia
Document Title - Geoscience Australia
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Lord Howe High Resolution Grids<br />
Earth Topography 1 minute (ETOPO1) grid<br />
The ETOPO1 grid is a 1 minute of arc global bathymetry and topography data grid. Data for this<br />
grid are derived from sea-surface altimetry measurements, ocean soundings, Space Shuttle Radar<br />
Topography Mission 30 minute elevation data (SRTM30) and the 30 minute Global Topography<br />
dataset (GTOPO30). An extract of the model that covers the Lord Howe Island region is shown in<br />
Figure 3. A full description (http://www.ngdc.noaa.gov/mgg/global/etopo1sources.html) of the grid<br />
can be found at the link.<br />
Features of the ETOPO1 model for the Lord Howe Island region are:<br />
Three seamounts are identified, in addition to the larger Lord Howe volcano.<br />
Islands in the Lord Howe Island group are incorrectly located.<br />
There is a lack of detail in the representation of the Lord Howe volcano.<br />
30.63 o S<br />
160.2 o E<br />
32.6 o S<br />
158.13 o E<br />
Figure 3: The region around Lord Howe Island as represented by the ETOPO 1 minute of arc<br />
grid (position marker approximate only).<br />
6
Change language