GINA

I just came across a unified global topography/bathymetry gridded data  
set with 30 arc-sec resolution for topography and 2 arc-minute  
resolution for bathymetry:

<http://www.gina.alaska.edu/page.xml?group=data&page=griddata>

Evidently, one should refer to it as the GINA data set. This seems to  
be an improvement over the GLOBE and ETOPO2 data sets, which give  
equivalent resolution for topography and bathymetry, respectively. I  
intended to use GLOBE on land and ETOPO2 in the oceans, as backgrounds  
for seismicity plots, but mixed land/ocean regions are a problem. GINA  
is said to be easily used with GMT (already in .grd format). Has  
anyone tried it out in GMT? Is there any reason not to switch to this  
as the best general-purpose global gridded relief data set?

Eric

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