Station XA SA40 - XA.SA40

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

Nearby stations (2 deg radius)

Station Name (Lat, Lon) Start / End Elevation
SA40 XA.SA40 (-25.90, 27.15) 1997-04-21 / 1999-12-31 1512 m
Crust2 Type:G1,Archean, no seds.
Thickness Estimate:43 km
Thickness StdDev:2.7 km
Vp/Vs Estimate:1.76
Vp/Vs StdDev:0.05
Vs Estimate:3.66 km/s
Poisson's Ratio:0.26
Peak Value:0.02
Assumed Vp:6.459 km/s
Ps Weight:0.33333334
PpPs Weight:0.33333334
PsPs Weight:0.33333328
Residual Complexity:0.637
Nearby stations H: +-
(2.0 deg) Vp/Vs: +-

6 with match > 90% ( 16.666666 %) and 12 with match > 80% ( 33.333332 %) out of 36.

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 43 km 1.76 6.459 km/s 3.66 km/s 0.26
Crust2.0 37 km 1.76 6.459 km/s 3.665 km/s 0.26 G1,Archean, no seds.
Global Maxima 43 km 1.76 6.459 km/s 3.66 km/s 0.26 amp=0.020522987
Local Maxima 1 40 km 1.81 6.459 km/s 3.574 km/s 0.28 amp=0.015944572
Local Maxima 2 38 km 1.82 6.459 km/s 3.544 km/s 0.28 amp=0.008905635
Local Maxima 3 46 km 1.67 6.459 km/s 3.862 km/s 0.22 amp=0.0072241495
Local Maxima 4 55 km 1.60 6.459 km/s 4.031 km/s 0.18 amp=0.0062531177
Predicted Arrivals for vertical incidence
(zero ray parameter)
Ps5.06 SECOND
PpPs18.30 SECOND
PsPs/PpSs23.36 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
99.22153 80.5 deg 156.893 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
98.43385 83.7 deg 238.791 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
95.84212 86.0 deg 245.483 deg Near Coast Of Northern Chile 1998/01/30 12:16:08 GMT (-23.9, -70.2) 42 km 6.3 MB, 6.5 MS, 7.0 UNKNOWN, 6.7 ME
95.56055 82.2 deg 229.018 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
93.31962 74.5 deg 35.412 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
92.15306 42.3 deg 101.599 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
85.952736 83.8 deg 238.671 deg Near Coast Of Central Chile 1998/01/12 10:14:07 GMT (-31.0, -71.4) 35 km 5.8 MB, 6.2 MS, 6.6 UNKNOWN, 6.2 ME
85.86763 51.1 deg 212.778 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
85.057144 84.6 deg 239.323 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
84.30911 84.8 deg 239.929 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
81.85413 41.2 deg 282.406 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
80.66742 39.3 deg 242.071 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

Losers

(24 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude Reason
95.36652 78.5 deg 51.344 deg Nepal 1998/09/03 18:15:56 GMT (27.9, 86.9) 33 km 5.6 MB
78.95972 83.2 deg 237.525 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
77.63874 38.6 deg 79.401 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
75.11465 38.2 deg 244.891 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
75.0573 79.5 deg 157.018 deg South Of Australia 1998/03/25 12:17:22 GMT (-63.6, 147.9) 10 km 5.8 MB, 6.1 MS, 6.5 UNKNOWN
70.38318 80.4 deg 232.256 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
69.30843 84.0 deg 242.851 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
68.085335 84.5 deg 239.064 deg Near Coast Of Central Chile 1997/07/21 23:19:39 GMT (-30.3, -71.9) 33 km 5.2 MB, 5.5 MS, 6.1 UNKNOWN
67.999214 95.5 deg 255.096 deg Central Peru 1998/02/19 04:21:30 GMT (-11.0, -74.4) 33 km 5.8 MB, 5.4 MS, 6.0 UNKNOWN, 5.9 MW
67.110435 89.3 deg 255.151 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
66.2496 97.6 deg 101.466 deg Banda Sea 1998/11/09 05:30:14 GMT (-7.0, 129.0) 33 km 6.1 MB, 6.7 UNKNOWN, 6.6 ME
65.548775 84.8 deg 240.092 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
63.159645 74.6 deg 35.391 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
60.471943 83.3 deg 152.203 deg West Of Macquarie Island 1997/10/17 09:55:15 GMT (-57.5, 148.0) 10 km 5.2 MB, 5.9 MS, 6.2 UNKNOWN, 6.0 MW
59.714973 72.3 deg 76.38 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
55.12091 83.2 deg 247.887 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
54.9719 47.9 deg 293.688 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
52.301876 75.0 deg 86.458 deg Southern Sumatra, Indonesia 1997/04/22 05:55:59 GMT (-3.4, 102.1) 108 km 5.6 MB, 5.9 UNKNOWN, 5.9 MW
50.44116 90.5 deg 251.903 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
49.975647 85.2 deg 247.548 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
48.115807 81.8 deg 92.373 deg Java Sea 1997/07/11 09:55:12 GMT (-5.7, 110.8) 574 km 5.6 MB
45.744083 40.6 deg 78.288 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
45.491283 86.1 deg 249.53 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
42.947556 89.4 deg 107.407 deg Western Australia 1997/08/10 09:20:30 GMT (-16.0, 124.3) 10 km 5.9 MB, 6.0 MS, 6.3 UNKNOWN, 6.3 MW