Station XA SA50 - XA.SA50

Network: XA97 - Anatomy of an Archean Craton, South Africa

Nearby stations (2 deg radius)

Station Name (Lat, Lon) Start / End Elevation
SA50 XA.SA50 (-23.87, 27.17) 1997-04-25 / 1999-12-31 976 m
Crust2 Type:G1,Archean, no seds.
Thickness Estimate:39 km
Thickness StdDev:1.6 km
Vp/Vs Estimate:1.71
Vp/Vs StdDev:0.04
Vs Estimate:3.772 km/s
Poisson's Ratio:0.24
Peak Value:0.02
Assumed Vp:6.459 km/s
Ps Weight:0.33333334
PpPs Weight:0.33333334
PsPs Weight:0.33333328
Residual Complexity:0.597
Nearby stations H: +-
(2.0 deg) Vp/Vs: +-

4 with match > 90% ( 17.391304 %) and 9 with match > 80% ( 39.130436 %) out of 23.

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 39 km 1.71 6.459 km/s 3.772 km/s 0.24
Crust2.0 37 km 1.76 6.459 km/s 3.665 km/s 0.26 G1,Archean, no seds.
Global Maxima 39 km 1.71 6.459 km/s 3.772 km/s 0.24 amp=0.024373513
Local Maxima 1 35 km 1.85 6.459 km/s 3.501 km/s 0.29 amp=0.014214498
Local Maxima 2 48 km 1.60 6.459 km/s 4.031 km/s 0.18 amp=0.012258146
Local Maxima 3 32 km 1.84 6.459 km/s 3.515 km/s 0.29 amp=0.008366362
Local Maxima 4 40 km 1.75 6.459 km/s 3.691 km/s 0.26 amp=0.007910514
Predicted Arrivals for vertical incidence
(zero ray parameter)
Ps4.30 SECOND
PpPs16.38 SECOND
PsPs/PpSs20.68 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

(9 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude
99.00622 82.4 deg 157.007 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
94.37869 83.5 deg 228.821 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
92.61855 72.8 deg 35.745 deg Hindu Kush Region, Afghanistan 1997/05/13 14:13:45 GMT (36.4, 70.9) 196 km 6.1 MB, 6.5 UNKNOWN, 6.4 MW
92.185234 40.3 deg 239.953 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
89.61478 42.7 deg 103.744 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
88.90573 85.8 deg 239.778 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
88.42675 40.8 deg 280.12 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
87.963234 95.4 deg 91.034 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
84.87441 52.9 deg 211.937 deg South Sandwich Islands Region 1997/10/05 18:04:30 GMT (-59.7, -29.2) 274 km 6.0 MB, 6.3 UNKNOWN, 6.3 MW

Losers

(14 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude Reason
79.132515 79.9 deg 319.826 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
77.16792 85.6 deg 239.169 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
69.07132 79.5 deg 56.887 deg India-Bangladesh Border Region 1997/05/08 02:53:14 GMT (24.9, 92.2) 35 km 5.6 MB, 5.6 MS, 6.0 UNKNOWN, 5.9 MW
68.04861 38.2 deg 81.903 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
66.6649 49.6 deg 291.589 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
65.45384 40.2 deg 80.606 deg Mid-Indian Ridge 1998/04/09 23:26:52 GMT (-12.2, 67.8) 10 km 5.5 MB, 5.4 MS, 5.9 UNKNOWN, 5.9 MW
64.35905 85.8 deg 239.942 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
60.79907 86.0 deg 247.398 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
59.908398 84.0 deg 247.67 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
55.139065 47.1 deg 291.971 deg North Of Ascension Island 1998/04/10 16:40:38 GMT (-1.3, -15.7) 10 km 5.9 MS, 5.4 MB, 6.2 UNKNOWN, 6.1 MW
53.783237 50.6 deg 216.418 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
50.011383 84.9 deg 242.672 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
35.0652 61.1 deg 354.276 deg Ionian Sea 1997/11/18 13:13:46 GMT (37.3, 20.9) 33 km 5.5 ML, 5.4 MB
18.96698 81.9 deg 92.654 deg Java Sea 1997/07/11 09:55:12 GMT (-5.7, 110.8) 574 km 5.6 MB