Fig. 4From: Trajectory of the August 7, 2010 Biwako fireball determined from seismic recordingsSchematic diagram of meteor-generated atmospheric waves. In region A, the signal is explained by a line souce, and in region B by a point source. Coordinate systems used in the analysis are shown on the right-hand side. Origins for the x, y, z coordinate system are longitude 136E, latitude 35N, and 0 km altitude, respectively. See the text for details.Back to article page