Tool Focal Mechanism (Beachball Plots)
This tool creates a new polygon layer with beachball plots as representation of focal mechanism solution data. Focal mechanism data of earthquakes have to be supplied as strike and dip angles of the fault plane and rake angle (slip vector) as deviation from the strike angle.
References
- Cronin, V. (2010): A Primer on Focal Mechanism Solutions for Geologists. Baylor University. pdf.
- Author: O.Conrad (c) 2018
- Menu: Visualization|Shapes
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Points | Shapes (input) | POINTS | - | - |
| Output | Focal Mechanism Beachballs | Shapes (output) | PLOTS | - | - |
| Options | Strike | Table field | STRIKE | - | - |
| Dip | Table field | DIP | - | - |
| Rake | Table field | RAKE | - | - |
| Size (*) | Table field | SIZE | - | - |
| Default | Floating point | SIZE_DEF | - | Minimum: 0.000000
Default: 1.000000 |
| Scale to... | Value range | SIZE_RANGE | - | - |
| Arc Vertex Distance [Degree] | Floating point | DARC | - | Minimum: 0.100000
Maximum: 10.000000
Default: 5.000000 |
| Style | Choice | STYLE | - | Available Choices:
[0] one
[1] two
Default: 0 |
| (*) optional |
Command-line
Usage: saga_cmd shapes_tools 29 [-POINTS <str>] [-STRIKE <str>] [-DIP <str>] [-RAKE <str>] [-SIZE <str>] [-SIZE_DEF <double>] [-SIZE_RANGE_MIN <double>] [-SIZE_RANGE_MAX <double>] [-PLOTS <str>] [-DARC <double>] [-STYLE <str>]
-POINTS:<str> Points
Shapes (input)
-STRIKE:<str> Strike
Table field
-DIP:<str> Dip
Table field
-RAKE:<str> Rake
Table field
-SIZE:<str> Size
Table field
-SIZE_DEF:<double> Default
Floating point
Minimum: 0.000000
Default: 1.000000
-SIZE_RANGE_MIN:<double> Scale to...
Value range
-SIZE_RANGE_MAX:<double> Scale to...
Value range
-PLOTS:<str> Focal Mechanism Beachballs
Shapes (output)
-DARC:<double> Arc Vertex Distance [Degree]
Floating point
Minimum: 0.100000
Maximum: 10.000000
Default: 5.000000
-STYLE:<str> Style
Choice
Available Choices:
[0] one
[1] two
Default: 0