Station AF NBI - Nairobi, Kenya, Africa

Network: AF - Africa Array

Nearby stations (2 deg radius)

Station Name (Lat, Lon) Start / End Elevation
NBI Nairobi, Kenya, Africa (-1.27, 36.80) 2011-03-08 / 2599-12-31 1713 m
Crust2 Type:X5,thick Rift 0.25 km sediments
Thickness Estimate:44 km
Thickness StdDev:3.9 km
Vp/Vs Estimate:1.80
Vp/Vs StdDev:0.07
Vs Estimate:3.662 km/s
Poisson's Ratio:0.28
Peak Value:0.03
Assumed Vp:6.601 km/s
Ps Weight:0.33333334
PpPs Weight:0.33333334
PsPs Weight:0.33333328
Residual Complexity:0.547
Nearby stations H:43 km +- 1.0 km
(2.0 deg) Vp/Vs:1.81 +- 0.01

6 with match > 90% ( 33.333332 %) and 10 with match > 80% ( 55.555557 %) out of 18.

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Azimuth Distribution of Events:

Prior Results for this Station

Study Thickness Vp/Vs Vp Vs Poissons Ratio Extra
EARS 44 km 1.80 6.601 km/s 3.662 km/s 0.28
Crust2.0 38 km 1.77 6.601 km/s 3.729 km/s 0.27 X5,thick Rift 0.25 km sediments
Global Maxima 44 km 1.80 6.601 km/s 3.662 km/s 0.28 amp=0.031285215
Local Maxima 1 51 km 1.72 6.601 km/s 3.843 km/s 0.24 amp=0.013496319
Local Maxima 2 51 km 1.93 6.601 km/s 3.411 km/s 0.32 amp=0.013157494
Local Maxima 3 32 km 1.60 6.601 km/s 4.125 km/s 0.18 amp=0.011415893
Local Maxima 4 28 km 1.60 6.601 km/s 4.119 km/s 0.18 amp=0.011006471
Predicted Arrivals for vertical incidence
(zero ray parameter)
Ps5.29 SECOND
PpPs18.47 SECOND
PsPs/PpSs23.76 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

(10 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude
97.42074 70.2 deg 57.186 deg Sichuan, China 2013/04/20 00:02:47 GMT (30.3, 102.9) 14 km 6.6 MW, 6.5 MB, 6.6 MW, 6.8 MS
95.44973 37.9 deg 37.801 deg Southern Iran 2013/04/16 10:44:20 GMT (28.0, 62.0) 80 km 7.7 MW, 7.0 MB, 7.7 MW
94.56171 37.1 deg 343.921 deg Crete, Greece 2013/06/16 21:39:05 GMT (34.3, 25.2) 19 km 6.0 MW, 5.7 MS, 5.8 MW, 5.9 MB
93.661316 86.0 deg 69.253 deg Philippine Islands Region 2013/04/10 20:20:26 GMT (20.7, 122.1) 12 km 5.8 MW, 5.7 MS, 5.9 MW, 6.0 MB
92.95707 49.6 deg 30.819 deg Southeastern Uzbekistan 2013/05/26 06:08:15 GMT (40.0, 67.3) 18 km 5.7 MW, 5.6 MW, 5.9 MS, 6.2 MB
91.10906 37.2 deg 343.771 deg Crete, Greece 2013/06/15 16:11:02 GMT (34.4, 25.0) 10 km 6.2 MW, 6.0 MB, 6.0 MS, 6.1 MW
88.76378 93.9 deg 47.436 deg E. Russia-N.E. China Border Reg. 2013/04/05 13:00:02 GMT (42.7, 131.0) 563 km 6.3 MW, 6.2 MB, 6.4 MW
88.72464 32.8 deg 24.546 deg Southern Iran 2013/04/09 11:52:49 GMT (28.4, 51.6) 12 km 6.4 MW, 5.9 MB, 6.2 MW, 6.3 MS
85.000534 38.2 deg 150.802 deg South Indian Ocean 2011/12/02 00:22:51 GMT (-34.0, 58.1) 10 km 5.7 MB, 5.1 MS, 5.6 MW, 5.4 MW
81.094536 88.2 deg 90.101 deg Southern Molucca Sea 2013/06/26 22:59:00 GMT (-0.1, 125.1) 33 km 5.5 MW, 5.9 MB

Losers

(8 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude Reason
87.46075 49.0 deg 36.589 deg Hindu Kush Region, Afghanistan 2015/10/26 09:09:32 GMT (36.4, 70.7) 212 km 7.5 MWW, 7.5 MWB
75.39168 49.5 deg 37.076 deg Afghanistan-Tajikistan Bord Reg. 2015/11/22 18:16:04 GMT (36.5, 71.5) 92 km 5.9 MB
74.27721 38.2 deg 38.079 deg Southwestern Pakistan 2013/04/17 03:15:52 GMT (28.1, 62.4) 56 km 5.6 MW, 5.6 MW, 5.7 MB
73.500626 93.3 deg 96.334 deg Banda Sea 2013/04/20 04:51:12 GMT (-6.3, 130.2) 108 km 6.0 MW, 5.9 MW, 6.0 MB
72.59883 88.0 deg 85.625 deg Celebes Sea 2015/09/02 01:18:30 GMT (4.4, 124.7) 310 km 5.9 MB
71.15077 62.1 deg 88.495 deg Northern Sumatra, Indonesia 2015/11/08 09:34:57 GMT (0.7, 98.9) 75 km 6.1 MB
64.84189 92.7 deg 97.264 deg Banda Sea 2015/09/27 02:56:13 GMT (-7.2, 129.7) 110 km 5.6 MB
56.56854 86.6 deg 89.793 deg Minahassa Peninsula, Sulawesi 2015/09/13 01:13:12 GMT (0.1, 123.4) 123 km 5.8 MB