Error Occurs in poly3d-inv When Running Inversion on a Complex, Multi-Segment Curved Fault Earthquake Model

[Elcappo2019]

Problem Description:

I have been working with an earthquake model that involves a curved fault. When I attempt to run the "poly3d-inv -i inv.in" command to perform inversion analysis, I encounter an error (cannot calc element normal. Elt must have avery odd shape, and I am unsure about the root cause of this issue. The following are key aspects of the problem:

1. The earthquake model comprises two faults. One of these faults is considerably larger and curved, while the other fault is oriented nearly east-west.
2. When I execute the "poly3d-inv -i inv.in" command on a single segment of the fault, it runs successfully without any errors. However, when I attempt to run the same command on all the segments simultaneously, the error is triggered
3. My operating system environment is a virtual machine running "Windows XP."