Stove surface solution
A hearth solution is a representation used in geophysics of the measurements of earthquake measuring stations with regard to a specific earthquake . The hearth surface solution serves to better understand the underlying mechanics of an earthquake and helps to identify the cause of the quake.
presentation
The representation of the focal area solution requires the azimuth assigned to the quake as well as the respective incidence angle and the direction of oscillation of the first use of the measured wave (compression or dilation) from each measuring station involved . These data are plotted in a circle: a plumb line is drawn from the north point of the circle to the center point. Starting from this perpendicular, the azimuth of the respective station is taken as the angular distance and the incidence angle as the length from the center point in a clockwise direction. At the end of the resulting stretch, the type of wave is indicated by a plus or a minus.
If this is carried out for several stations, so that delimited areas are created on the circle, the resulting diagram, which is also called " Beach Ball " because of the typical pattern , provides information about the cause of the quake, i.e. H. whether it is postponement , deportation or leaf displacement .
The following pictures show the beach ball diagrams of ideal stove surface solutions with the three possible causes. Areas marked in black (positive) denote stations that have measured compression.
Deportation quake
Postponement quakes
Leaf shift quake
