Station XA SA31 - XA.SA31
Network: XA97 - Anatomy of an Archean Craton, South Africa
Nearby stations (2 deg radius)
| Station | Name | (Lat, Lon) | Start / End | Elevation |
| SA31 | XA.SA31 | (-27.00, 25.02) | 1997-04-24 / 1999-12-31 | 1348 m |
| Crust2 Type: | G1,Archean, no seds. |
| Thickness Estimate: | 38 km |
| Thickness StdDev: | 0.6 km |
| Vp/Vs Estimate: | 1.74 |
| Vp/Vs StdDev: | 0.02 |
| Vs Estimate: | 3.723 km/s |
| Poisson's Ratio: | 0.25 |
| Peak Value: | 0.05 |
| Assumed Vp: | 6.459 km/s |
| Ps Weight: | 0.33333334 |
| PpPs Weight: | 0.33333334 |
| PsPs Weight: | 0.33333328 |
| Residual Complexity: | 0.392 |
| Nearby stations H: | +- |
| (2.0 deg) Vp/Vs: | +- |
6 with match > 90% ( 17.142857 %) and 12 with match > 80% ( 34.285713 %) out of 35.
Download stack as xyz text file.
Azimuth Distribution of Events:
Prior Results for this Station
| Study | Thickness | Vp/Vs | Vp | Vs | Poissons Ratio | Extra |
| EARS | 38 km | 1.74 | 6.459 km/s | 3.723 km/s | 0.25 | |
| Crust2.0 | 37 km | 1.76 | 6.459 km/s | 3.665 km/s | 0.26 | G1,Archean, no seds. |
| Global Maxima | 38 km | 1.74 | 6.459 km/s | 3.723 km/s | 0.25 | amp=0.05178811 |
| Local Maxima 1 | 27 km | 2.02 | 6.459 km/s | 3.206 km/s | 0.34 | amp=0.019355146 |
| Local Maxima 2 | 40 km | 1.69 | 6.459 km/s | 3.828 km/s | 0.23 | amp=0.018504104 |
| Local Maxima 3 | 49 km | 1.60 | 6.459 km/s | 4.037 km/s | 0.18 | amp=0.011041202 |
| Local Maxima 4 | 36 km | 1.78 | 6.459 km/s | 3.629 km/s | 0.27 | amp=0.00990306 |
| Predicted Arrivals for vertical incidence (zero ray parameter) | |
| Ps | 4.30 SECOND |
| PpPs | 15.98 SECOND |
| PsPs/PpSs | 20.28 SECOND |
Events Processed for this Station
Download zip of receiver functions as SAC
Plot maxima for each earthquake.
Events Used in the Stack
(12 events)| Radial Match | Distance | Baz | FERegion | Time | Lat/Lon | Depth | Magnitude |
| 98.96395 | 80.2 deg | 157.465 deg | Balleny Islands Region | 1998/03/25 03:12:25 GMT | (-62.9, 149.5) | 10 km | 6.6 MB, 8.0 MS, 8.3 UNKNOWN, 8.1 MW |
| 98.490326 | 81.5 deg | 239.729 deg | Near Coast Of Central Chile | 1997/10/15 01:03:33 GMT | (-30.9, -71.2) | 58 km | 6.8 MB, 6.8 MS, 7.3 UNKNOWN, 7.1 MW |
| 95.04 | 80.0 deg | 229.897 deg | Off Coast Of Southern Chile | 1998/04/01 22:42:56 GMT | (-40.3, -74.9) | 9.0 km | 6.2 MB, 6.0 MS, 6.7 UNKNOWN, 6.6 ME |
| 94.434 | 85.3 deg | 46.781 deg | Xizang | 1997/11/08 10:02:52 GMT | (35.1, 87.3) | 33 km | 6.2 MB, 7.9 MS, 7.7 UNKNOWN, 7.6 MW |
| 91.138664 | 43.9 deg | 100.998 deg | Mid-Indian Ridge | 1999/01/24 08:00:08 GMT | (-26.5, 74.5) | 10 km | 6.0 MB, 6.3 MS, 6.3 MW, 6.3 ME |
| 90.20441 | 37.1 deg | 243.131 deg | Southern Mid-Atlantic Ridge | 1998/06/24 10:44:30 GMT | (-37.3, -17.4) | 10 km | 5.7 MB, 5.8 MS, 6.0 UNKNOWN, 5.9 MW |
| 87.26788 | 82.6 deg | 240.872 deg | Near Coast Of Central Chile | 1998/09/03 17:37:58 GMT | (-29.5, -71.7) | 27 km | 6.2 MB, 6.6 MS, 6.5 UNKNOWN, 6.4 ME |
| 86.74931 | 39.6 deg | 285.128 deg | Ascension Island Region | 1998/06/18 04:17:54 GMT | (-11.6, -13.9) | 10 km | 6.1 MS, 5.4 MB, 6.2 UNKNOWN |
| 83.01896 | 97.3 deg | 92.302 deg | Minahassa Peninsula, Sulawesi | 1997/11/25 12:14:33 GMT | (1.2, 122.5) | 24 km | 6.1 MB, 6.8 MS, 7.1 UNKNOWN, 6.7 ME |
| 83.01523 | 81.0 deg | 238.456 deg | Near Coast Of Central Chile | 1998/07/29 07:14:24 GMT | (-32.3, -71.3) | 51 km | 6.3 MB, 6.5 UNKNOWN, 6.5 ME |
| 81.408005 | 89.2 deg | 251.813 deg | Near Coast Of Peru | 1999/04/03 06:17:18 GMT | (-16.7, -72.7) | 87 km | 6.1 MB, 6.2 MS, 6.8 MW, 6.8 MW |
| 80.13884 | 47.0 deg | 217.618 deg | South Sandwich Islands Region | 1998/08/29 08:30:21 GMT | (-55.7, -27.0) | 33 km | 5.6 MB, 5.6 MS, 6.0 UNKNOWN, 5.9 MW |
Losers
(23 events)| Radial Match | Distance | Baz | FERegion | Time | Lat/Lon | Depth | Magnitude | Reason |
| 79.65253 | 36.0 deg | 246.102 deg | Southern Mid-Atlantic Ridge | 1998/01/03 06:10:08 GMT | (-35.5, -16.2) | 10 km | 5.9 MS, 5.4 MB, 6.3 UNKNOWN, 6.1 MW | |
| 79.5691 | 40.6 deg | 79.469 deg | Mid-Indian Ridge | 1997/09/25 14:20:48 GMT | (-13.8, 66.2) | 10 km | 5.3 MB, 5.7 MS, 6.0 UNKNOWN, 6.0 MW | |
| 79.46183 | 93.4 deg | 280.074 deg | Near Coast Of Venezuela | 1997/07/09 19:24:13 GMT | (10.6, -63.5) | 20 km | 6.2 MB, 6.8 MS, 7.0 UNKNOWN, 6.6 ME | |
| 75.37769 | 82.4 deg | 240.264 deg | Near Coast Of Central Chile | 1997/07/06 09:54:00 GMT | (-30.1, -71.9) | 19 km | 5.8 MB, 6.5 MS, 6.8 UNKNOWN, 6.4 ME | |
| 74.97299 | 78.2 deg | 233.145 deg | S. Chile-Argentina Border Region | 1998/12/14 16:25:24 GMT | (-38.2, -71.0) | 138 km | 6.0 UNKNOWN, 4.8 MS, 5.4 MB | |
| 74.038445 | 83.0 deg | 248.22 deg | Northern Chile | 1999/03/02 17:45:55 GMT | (-22.7, -68.5) | 111 km | 5.8 MB, 6.1 MW, 5.9 MW | |
| 72.34907 | 76.6 deg | 36.566 deg | Afghanistan-Tajikistan Bord Reg. | 1998/12/11 20:16:24 GMT | (36.5, 71.0) | 223 km | 5.7 UNKNOWN, 5.0 MB, 5.6 MW | |
| 68.90181 | 97.0 deg | 223.161 deg | West Chile Rise | 1997/05/11 22:16:13 GMT | (-36.4, -97.7) | 10 km | 5.6 MB, 5.8 MS, 6.5 UNKNOWN, 6.4 MW | |
| 68.689125 | 49.1 deg | 295.62 deg | North Of Ascension Island | 1998/03/29 07:14:58 GMT | (-0.2, -17.9) | 10 km | 5.5 MB, 5.6 MS, 6.1 UNKNOWN, 6.1 MW | |
| 68.516594 | 82.6 deg | 241.036 deg | Near Coast Of Central Chile | 1997/07/19 12:22:57 GMT | (-29.3, -71.7) | 26 km | 5.8 MB, 5.5 MS, 5.9 UNKNOWN, 5.8 MW | |
| 66.46403 | 83.7 deg | 93.166 deg | Java Sea | 1997/07/11 09:55:12 GMT | (-5.7, 110.8) | 574 km | 5.6 MB | |
| 63.25999 | 81.0 deg | 248.873 deg | Jujuy Province, Argentina | 1997/07/20 10:14:22 GMT | (-23.0, -66.3) | 256 km | 5.7 MB, 6.1 UNKNOWN, 5.7 ME | |
| 63.139935 | 81.0 deg | 321.328 deg | Azores Islands, Portugal | 1997/06/27 04:39:52 GMT | (38.3, -26.7) | 10 km | 5.6 MB, 5.4 MS, 5.9 UNKNOWN, 5.9 MW | |
| 62.538776 | 83.9 deg | 250.505 deg | Chile-Bolivia Border Region | 1997/12/09 14:23:45 GMT | (-20.2, -68.4) | 133 km | 5.7 MB, 5.7 UNKNOWN, 5.7 MW | |
| 62.01794 | 83.0 deg | 248.521 deg | Northern Chile | 1997/09/28 23:13:13 GMT | (-22.4, -68.4) | 107 km | 5.7 MB, 5.6 UNKNOWN, 5.6 MW | |
| 60.16284 | 81.8 deg | 243.809 deg | Northern Chile | 1997/05/17 02:10:18 GMT | (-27.2, -69.5) | 106 km | 5.5 MB, 5.6 UNKNOWN, 5.5 MW | |
| 58.686935 | 74.4 deg | 77.135 deg | Northern Sumatra, Indonesia | 1999/02/04 19:28:00 GMT | (4.0, 95.3) | 56 km | 5.8 MB, 5.4 MS, 5.9 MW, 5.9 MW | |
| 56.767128 | 63.1 deg | 31.729 deg | Southern Iran | 1999/03/04 05:47:49 GMT | (28.3, 57.1) | 33 km | 5.6 MB | |
| 54.623543 | 63.5 deg | 80.493 deg | South Indian Ocean | 1999/03/29 06:17:58 GMT | (-4.0, 87.3) | 10 km | 5.5 MS, 5.4 MB, 5.8 MW, 5.8 MW | |
| 52.684086 | 87.2 deg | 256.112 deg | Peru-Bolivia Border Region | 1997/11/28 22:53:41 GMT | (-13.7, -68.8) | 586 km | 6.4 MB, 6.6 UNKNOWN, 6.6 MW | |
| 47.849895 | 88.4 deg | 252.85 deg | Southern Peru | 1998/10/08 04:51:42 GMT | (-16.1, -71.4) | 136 km | 6.1 MB, 6.4 UNKNOWN, 6.2 MW | |
| 46.31946 | 94.1 deg | 92.53 deg | Minahassa Peninsula, Sulawesi | 1998/10/10 16:29:08 GMT | (-0.4, 119.9) | 33 km | 5.5 MS, 5.4 MB, 6.1 UNKNOWN | |
| 33.326546 | 94.1 deg | 91.867 deg | Minahassa Peninsula, Sulawesi | 1999/02/23 07:27:56 GMT | (0.2, 119.5) | 33 km | 5.6 MB, 5.8 MS |
