ETOPO2v2 is a relatively old data set.
A more recent and higher resolution data set incorporating observations from recent satellite missions is SRTM30_PLUS described by Sandwell at al. (2014) but subsequently updated.
It is accessible at http://coastwatch.pfeg.noaa.gov/erddap/ ... 0plus.html
Sandwell, D. T., R. D. Müller, W. H. F. Smith, E. Garcia, R. Francis, New global marine gravity model from CryoSat-2 and Jason-1 reveals buried tectonic structure, Science, Vol. 346, no. 6205, pp. 65-67, doi: 10.1126/science.1258213, 2014.";