Michael Barton wrote: > Ultimately, I'm trying to locate bathymetry off the coast of Europe to > create a DEM of Pleistocene Europe during times of low sea level (i.e., > -300m). > > Following the FreeGIS.org link off the GRASS download data page, I found a > site with "STRM30 plus" that combine 1km SRTM with bathymetry > <ftp://topex.ucsd.edu/pub/srtm30_plus/data>. This seems just what I need. > However, I can't figure out the format or how to import it into GRASS. The > files show up like " w020n90.Bathmetry.srtm". I've tried r.in.gdal and > r.in.strm to no avail. I thought maybe the files were compressed and tried > to uncompress them without luck. > > Can anyone suggest what to do with these files? And barring that, any > suggestions for an alternative site of bathymetry I can patch into my Europe > map?
have a look at the etopo2 dataset, which is at 2' resolution. (2 naut mi) http://www.gfdl.noaa.gov/products/vis/data/datasets/etopo2_topography.html See the GRASS-Newsletter vol 1:8-11 for help importing it. http://grass.itc.it/newsletter/grassnews1.html srtm30_plus (V2.0 July 29, 2006) will be using this data (in part), http://topex.ucsd.edu/WWW_html/srtm30_plus.html but I see Smith & Sandwell have a brand new (beta) 1' bathemetric dataset: Smith, W. H. F., and D. T. Sandwell, Global seafloor topography from satellite altimetry and ship depth soundings, Science, v. 277, p. 1957-1962, 26 Sept., 1997. http://topex.ucsd.edu/WWW_html/mar_topo.html ftp://topex.ucsd.edu/pub/global_topo_1min/ "08/21/07 Changes for Version 9.1 Note this is a BETA VERSION of a 1-minute grid that includes a significant number of new depth soundings, especially for depths between 0 and -300 m. A more complete description of the new data and processing will be prepared for publication in early 2008. This is a collaborative effort between NGA, NOAA, NAVO and SIO. The predicted depths are based on the V16.1 gravity anomaly model in an adjacent directory. Please send comments to dsandwell at ucsd.edu." Sorry, I couldn't see a zipped version, and no one has put it up on geotorrent.org yet, so I can't give you a r.in.bin line to use. hmmm, dirty .DS_Store everywhere. Someone over there is running a Mac... Hamish ps- the 7200rpm screeching & grinding noise I heard yesterday is a timely reminder that now might be a good time to do that backup you had been putting off, and get that nightly rsync cron job up & running (eg the Unison file synchronizer). ouch ____________________________________________________________________________________ Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out. http://answers.yahoo.com/dir/?link=list&sid=396545469 _______________________________________________ grassuser mailing list grassuser@grass.itc.it http://grass.itc.it/mailman/listinfo/grassuser