Commit b5ce9f49 authored by niklas.thiel's avatar niklas.thiel

added desciption of double-couple source in manual

parent faee198a
...@@ -99,7 +99,7 @@ The program checks these criteria for the entire model, outputs a warning messag ...@@ -99,7 +99,7 @@ The program checks these criteria for the entire model, outputs a warning messag
"SOURCE_TYPE" : "3", "SOURCE_TYPE" : "3",
"SOURCE_TYPE values (point_source): explosive=1;force_in_x=2;force_in_y=3; "SOURCE_TYPE values (point_source): explosive=1;force_in_x=2;force_in_y=3;
rotated_force=4" : "comment", rotated_force=4;double-couple=5" : "comment",
"SRCREC" : "1", "SRCREC" : "1",
"SRCREC values : read source positions from SOURCE_FILE=1, "SRCREC values : read source positions from SOURCE_FILE=1,
...@@ -187,6 +187,8 @@ The wavelets in each su file must have the same number of samples as specified b ...@@ -187,6 +187,8 @@ The wavelets in each su file must have the same number of samples as specified b
The following source types are availabe: explosive sources that excite compressional waves only (SOURCE\_TYPE=1), and point forces in the x- and y-direction (SOURCE\_TYPE=2,3). The following source types are availabe: explosive sources that excite compressional waves only (SOURCE\_TYPE=1), and point forces in the x- and y-direction (SOURCE\_TYPE=2,3).
The force sources excite both P- and S-waves. The explosive source is located at the same position as the diagonal elements of the stress tensor, i.e. at (i,j) (Figure \ref{fig_cell}). The force sources excite both P- and S-waves. The explosive source is located at the same position as the diagonal elements of the stress tensor, i.e. at (i,j) (Figure \ref{fig_cell}).
The forces are located at the same position as the corresponding components of particle velocity (Figure \ref{fig_cell}). If (x,y) denotes the position at which the source location is defined in source.dat, then the actual force in x-direction is located at (x+DX/2,y) and the actual force in y-direction is located at (x,y+DY/2). With SOURCE\_TYPE=4 a custom directive force can be defined by a force angle between y and x. The angle of the force must be specified in the SOURCE\_FILE after AMP. This force is not aligned along the main directions. The forces are located at the same position as the corresponding components of particle velocity (Figure \ref{fig_cell}). If (x,y) denotes the position at which the source location is defined in source.dat, then the actual force in x-direction is located at (x+DX/2,y) and the actual force in y-direction is located at (x,y+DY/2). With SOURCE\_TYPE=4 a custom directive force can be defined by a force angle between y and x. The angle of the force must be specified in the SOURCE\_FILE after AMP. This force is not aligned along the main directions.
By using SOURCE\_TYPE=5, a 2D double-couple source is activated. The $M_0$ of the moment tensor is given in AMP in the SOURCE\_FILE, the angle in degree also in the SOURCE\_FILE at the SOURCE\_AZIMUTH position.
\newline \newline
The locations of multiple sources must be defined in an external ASCII file (SOURCE\_FILE) that has the following format: The locations of multiple sources must be defined in an external ASCII file (SOURCE\_FILE) that has the following format:
...@@ -199,7 +201,7 @@ In the following lines, you can define certain parameters for each source point: ...@@ -199,7 +201,7 @@ In the following lines, you can define certain parameters for each source point:
The first line must be the overall number of sources (NSRC). XSRC is the x-coordinate of a source point (in meter), YSRC is the y-coordinate of a source point (in meter). ZSRC is the z-coordinate should always be set to 0.0, because IFOS2D is a 2D code. TD is the excitation time (time-delay) for the source point (in seconds), FC is the center frequency of the source signal (in Hz), and AMP is the maximum amplitude of the source signal. The first line must be the overall number of sources (NSRC). XSRC is the x-coordinate of a source point (in meter), YSRC is the y-coordinate of a source point (in meter). ZSRC is the z-coordinate should always be set to 0.0, because IFOS2D is a 2D code. TD is the excitation time (time-delay) for the source point (in seconds), FC is the center frequency of the source signal (in Hz), and AMP is the maximum amplitude of the source signal.
\newline \newline
\textbf{Optional parameter:} The SOURCE\_AZIMUTH if SOURCE\_TYPE is 4. The SOURCE\_AZIMUTH is the angle between the y- and x-direction in degree and with SOURCE\_TYPE if SOURCE\_TYPE is set here, the value of SOURCE\_TYPE in the input file is ignored. \textbf{Optional parameter:} The SOURCE\_AZIMUTH if SOURCE\_TYPE is 4 or 5. The SOURCE\_AZIMUTH is the angle between the y- and x-direction in degree and with SOURCE\_TYPE if SOURCE\_TYPE is set here, the value of SOURCE\_TYPE in the input file is ignored.
The SOURCE\_FILE = ./sources/source.dat that defines an explosive source at $x_s=2592.0\;$ m and $y_s=2106.0\;$ m with The SOURCE\_FILE = ./sources/source.dat that defines an explosive source at $x_s=2592.0\;$ m and $y_s=2106.0\;$ m with
a center frequency of 5 Hz (no time delay) is a center frequency of 5 Hz (no time delay) is
......
...@@ -23,7 +23,7 @@ ...@@ -23,7 +23,7 @@
"SIGNAL_FILE" : "./ormsby.dat", "SIGNAL_FILE" : "./ormsby.dat",
"SOURCE_TYPE" : "3", "SOURCE_TYPE" : "3",
"SOURCE_TYPE values (point_source): explosive=1;force_in_x=2;force_in_y=3;rotated_force=4" : "comment", "SOURCE_TYPE values (point_source): explosive=1;force_in_x=2;force_in_y=3;rotated_force=4;double-couple=5" : "comment",
"SOURCE_FILE" : "./source/sources.dat", "SOURCE_FILE" : "./source/sources.dat",
"RUN_MULTIPLE_SHOTS" : "1", "RUN_MULTIPLE_SHOTS" : "1",
......
...@@ -23,7 +23,7 @@ ...@@ -23,7 +23,7 @@
"SIGNAL_FILE" : "./ormsby.dat", "SIGNAL_FILE" : "./ormsby.dat",
"SOURCE_TYPE" : "3", "SOURCE_TYPE" : "3",
"SOURCE_TYPE values (point_source): explosive=1;force_in_x=2;force_in_y=3;rotated_force=4" : "comment", "SOURCE_TYPE values (point_source): explosive=1;force_in_x=2;force_in_y=3;rotated_force=4;double-couple=5" : "comment",
"SOURCE_FILE" : "./source/sources.dat", "SOURCE_FILE" : "./source/sources.dat",
"RUN_MULTIPLE_SHOTS" : "1", "RUN_MULTIPLE_SHOTS" : "1",
......
...@@ -23,7 +23,7 @@ ...@@ -23,7 +23,7 @@
"SIGNAL_FILE" : "./STF/stf.su", "SIGNAL_FILE" : "./STF/stf.su",
"SOURCE_TYPE" : "3", "SOURCE_TYPE" : "3",
"SOURCE_TYPE values (point_source): explosive=1;force_in_x=2;force_in_y=3;rotated_force=4" : "comment", "SOURCE_TYPE values (point_source): explosive=1;force_in_x=2;force_in_y=3;rotated_force=4;double-couple=5" : "comment",
"SOURCE_FILE" : "./source/sources.dat", "SOURCE_FILE" : "./source/sources.dat",
"RUN_MULTIPLE_SHOTS" : "1", "RUN_MULTIPLE_SHOTS" : "1",
......
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