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scientificdata:start [2020/11/22 09:43] – christianscientificdata:start [2021/09/01 15:28] – [Translating gridded data from seismic interpretation to GMT-compatible format] christian
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   * [[.:platetectonics:datatypecodes|PLATES data type codes]]   * [[.:platetectonics:datatypecodes|PLATES data type codes]]
   * [[.:platetectonics:birdplateboundaries|Peter Bird's 2002 plate boundaries for GMT]]   * [[.:platetectonics:birdplateboundaries|Peter Bird's 2002 plate boundaries for GMT]]
-  * [[.:geophysics:properties| Geophysical properties used in modelling and simple calculations]]+  * [[chhei:geophysics:properties| Geophysical properties used in modelling and simple calculations]]
   * [[.:FileFormats|File format specs for geological/geophysical data]] (evolving)   * [[.:FileFormats|File format specs for geological/geophysical data]] (evolving)
 +  * [[.:DE_HistoricalOilProduction| Historical oil production data from Germany]]
 +
 +
 +===== Tips and Tricks for data crunching =====
 +
 +
 +==== Translating gridded data from seismic interpretation to GMT-compatible format ====
 + 
 +From Petrel one can usually export ''ZMAP+'' formatted grids in a given projection. It pays off to use a projection which is GDAL/PROJ compatible so that one can simply use the [[https://epsg.io|EPSG]] codes to reproject grids. I found it easier to use the GDAL-stack instead of going forth and back using GMT and/or GIS. Here's the basic steps I usually go through:
 +
 +  - ''gdal_translate -of netCDF -a_srs EPSG:12345 INPUT_grd_UTM_zmap+.dat OUTPUT_grd_UTM.nc'' (chose from GDAL's exhaustive [[https://gdal.org/drivers/raster/index.html|raster drivers]] list)
 +  - Check whether the output is correct using ''gdalinfo OUTPUT_grd_UTM.nc''
 +  - Re-project grid using '' gdalwarp -t_srs EPSG:4326 OUTPUT_grd_UTM.nc OUTPUT_grd_EPSG4326.nc''
 +  - Run GMT-script on ''OUTPUT_grd_EPSG4326.nc''
 +
 +
  
-{{tag> Data Formats PlateTectonics GMT Geophysics}}