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)
Ps4.30 SECOND
PpPs15.98 SECOND
PsPs/PpSs20.28 SECOND

Events Processed for this Station

Download zip of receiver functions as SAC

View Record Section

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