31 | | Two commands in binder's configuration file tell it where it should get the P-wave arrivals to work on. The "RingName" command specifies which Earthworm transport ring (a shared memory region) to read from. Make sure that this is the same ring into which pick_ew is writing its output. Also, if you're importing picks from another source and want binder to use them, make sure you are placing them in this ring as well. |
32 | | |
33 | | The "GetPicksFrom" command specifies the installation id and module id of the TYPE_PICK2K messages that binder will operate on. Specific id's or wildcards can be used for either or both of these arguments. Note: both binder_ew and eqproc should be set to listen to the same pick source(s)! |
| 31 | Two commands in binder's configuration file tell it where it should get the P-wave arrivals to work on. The "!RingName" command specifies which Earthworm transport ring (a shared memory region) to read from. Make sure that this is the same ring into which pick_ew is writing its output. Also, if you're importing picks from another source and want binder to use them, make sure you are placing them in this ring as well. |
| 32 | |
| 33 | The "!GetPicksFrom" command specifies the installation id and module id of the TYPE_PICK2K messages that binder will operate on. Specific id's or wildcards can be used for either or both of these arguments. Note: both binder_ew and eqproc should be set to listen to the same pick source(s)! |
205 | | For most earthquakes, the first iteration performed by the locator will be a "Free" solution. It will invert for all four hypocentral parameters: latitude, longitude, depth, and origin time. However, if an event has no nearby picks associated, the locator will perform "Fixed Depth" solution instead. This feature is controlled with the "FixDepth dmin trialz" command (default dmin=50.0, trialz=8.0). If an earthquake has no picks closer than "dmin" km, binder sets its depth to "trialz" km, then inverts for only latitude, longitude, and origin time. This prevents events with no depth resolution from flailing. |
206 | | |
207 | | The result of the locator's inversion is the "step-vector." This is the amount by which the iteration will change all 4 hypocentral components. Binder places limits on the horizontal (xystep) and vertical (zstep) components of the step-vector in any given iteration. Those limits are set with the "MaxStep xystep zstep" command (default xystep=10.0 km, zstep=2.0 km). If either step-length is exceeded in an interation, all 4 dimensions (x, y, z and time) of the step-vector are equally damped, preserving the direction of the vector, such that each dimension is within its configured limit. |
| 205 | For most earthquakes, the first iteration performed by the locator will be a "Free" solution. It will invert for all four hypocentral parameters: latitude, longitude, depth, and origin time. However, if an event has no nearby picks associated, the locator will perform "Fixed Depth" solution instead. This feature is controlled with the "!FixDepth dmin trialz" command (default dmin=50.0, trialz=8.0). If an earthquake has no picks closer than "dmin" km, binder sets its depth to "trialz" km, then inverts for only latitude, longitude, and origin time. This prevents events with no depth resolution from flailing. |
| 206 | |
| 207 | The result of the locator's inversion is the "step-vector." This is the amount by which the iteration will change all 4 hypocentral components. Binder places limits on the horizontal (xystep) and vertical (zstep) components of the step-vector in any given iteration. Those limits are set with the "!MaxStep xystep zstep" command (default xystep=10.0 km, zstep=2.0 km). If either step-length is exceeded in an interation, all 4 dimensions (x, y, z and time) of the step-vector are equally damped, preserving the direction of the vector, such that each dimension is within its configured limit. |
212 | | At the end of each iteration, binder recalculates the event's average weighted residual (rms) and performs a test for divergence. If the new rms is greater than the previous rms*"constant" (set with "MaxDeltaRms" command, default = 1.01), then the solution is diverging. If the location is converging, the locator goes on to the next iteration. If a location is diverging, binder removes half of the step-vector in all 4 dimensions (x, y, z and time), backing the location up toward the starting location from that iteration, and then checks the rms again. If the solution now converges, the locator goes to the next iteration. If the solution is |
| 212 | At the end of each iteration, binder recalculates the event's average weighted residual (rms) and performs a test for divergence. If the new rms is greater than the previous rms*"constant" (set with "!MaxDeltaRms" command, default = 1.01), then the solution is diverging. If the location is converging, the locator goes on to the next iteration. If a location is diverging, binder removes half of the step-vector in all 4 dimensions (x, y, z and time), backing the location up toward the starting location from that iteration, and then checks the rms again. If the solution now converges, the locator goes to the next iteration. If the solution is |