Geophysical Platform platformType extPlatformType refinedPlatformType refinedExtPlatformType POSC 1.0 ship The geophysical experiment and/or equipment is mediated from a ship, or another water based vessel. truck The geophysical experiment and/or equipment is mediated from a truck, or another land based vessel. airplane The geophysical experiment and/or equipment is mediated from a airplane. satellite The geophysical experiment and/or equipment is mediated from a ship, or another vessel that operates outside the earth's atmosphere.