Station IU NAI - Nairobi, Kenya

Network: IU - Global Seismograph Network (GSN - IRIS/USGS)

Nearby stations (2 deg radius)

Station Name (Lat, Lon) Start / End Elevation
NAI Nairobi, Kenya (-1.27, 36.80) 1995-01-05 / 1995-09-18 1692 m
Crust2 Type:X5,thick Rift 0.25 km sediments
Thickness Estimate:43 km
Thickness StdDev:5.6 km
Vp/Vs Estimate:1.81
Vp/Vs StdDev:0.12
Vs Estimate:3.647 km/s
Poisson's Ratio:0.28
Peak Value:0.04
Assumed Vp:6.601 km/s
Ps Weight:0.33333334
PpPs Weight:0.33333334
PsPs Weight:0.33333328
Residual Complexity:0.683
Nearby stations H:42 km +- 0.7 km
(2.0 deg) Vp/Vs:1.82 +- 0.01

8 with match > 90% ( 36.363636 %) and 18 with match > 80% ( 81.818184 %) out of 22.

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Azimuth Distribution of Events:

Prior Results for this Station

Study Thickness Vp/Vs Vp Vs Poissons Ratio Extra
EARS 43 km 1.81 6.601 km/s 3.647 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 43 km 1.81 6.601 km/s 3.647 km/s 0.28 amp=0.04444263
Local Maxima 1 30 km 2.09 6.601 km/s 3.158 km/s 0.35 amp=0.039772265
Local Maxima 2 36 km 2.00 6.601 km/s 3.304 km/s 0.33 amp=0.021515675
Local Maxima 3 27 km 1.64 6.601 km/s 4.025 km/s 0.20 amp=0.019784171
Local Maxima 4 51 km 1.93 6.601 km/s 3.411 km/s 0.32 amp=0.018343525
Predicted Arrivals for vertical incidence
(zero ray parameter)
Ps5.25 SECOND
PpPs18.20 SECOND
PsPs/PpSs23.45 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

(18 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude
96.582985 88.8 deg 77.427 deg Samar, Philippines 1995/05/05 03:53:47 GMT (12.6, 125.3) 33 km 6.2 MB, 7.0 MS, 7.1 UNKNOWN, 7.0 MW
96.5206 62.3 deg 60.899 deg Myanmar-India Border Region 1995/05/06 01:59:07 GMT (25.0, 95.3) 122 km 6.4 MB, 6.5 UNKNOWN, 6.4 MW
94.855896 89.2 deg 78.056 deg Samar, Philippines 1995/04/21 00:09:56 GMT (12.0, 125.7) 33 km 6.1 MB, 6.9 MS, 6.9 UNKNOWN, 6.8 MW
94.82455 63.4 deg 203.731 deg Southern Mid-Atlantic Ridge 1995/05/23 22:10:11 GMT (-56.1, -3.2) 10 km 5.3 MB, 6.6 MS, 6.8 UNKNOWN, 6.7 MW
94.321686 90.2 deg 83.756 deg Mindanao, Philippines 1995/04/20 08:45:10 GMT (6.3, 126.8) 85 km 6.2 MB, 6.6 UNKNOWN, 6.5 MW
94.22502 88.1 deg 98.305 deg Timor Region 1995/05/14 11:33:21 GMT (-8.4, 125.1) 33 km 6.1 MB, 6.9 MS, 7.1 UNKNOWN, 6.9 MW
94.07956 58.8 deg 269.663 deg Central Mid-Atlantic Ridge 1995/05/18 00:06:26 GMT (-0.9, -22.0) 10 km 6.2 MB, 6.1 MS, 6.8 UNKNOWN, 6.7 MW
90.450455 91.7 deg 88.192 deg Halmahera, Indonesia 1995/05/04 02:18:51 GMT (1.9, 128.5) 55 km 6.0 MB, 6.0 MS, 6.1 UNKNOWN, 6.1 MW
89.27652 81.5 deg 87.136 deg Celebes Sea 1995/03/06 18:43:42 GMT (2.7, 118.2) 33 km 5.5 MB, 5.8 MS, 6.3 UNKNOWN, 6.1 MW
87.15613 43.5 deg 106.922 deg South Indian Ocean 1995/07/27 05:51:17 GMT (-12.6, 79.2) 10 km 6.2 MB, 5.9 MS, 6.0 UNKNOWN, 6.0 MW
85.689705 49.1 deg 36.674 deg Hindu Kush Region, Afghanistan 1995/05/16 03:35:03 GMT (36.5, 70.9) 190 km 5.7 MB, 5.9 UNKNOWN, 5.8 MW
85.1947 90.2 deg 87.491 deg Northern Molucca Sea 1995/01/21 07:30:23 GMT (2.5, 126.9) 47 km 6.1 MB, 6.1 MS
84.78078 90.6 deg 91.388 deg Halmahera, Indonesia 1995/02/13 12:29:55 GMT (-1.4, 127.4) 33 km 5.8 MB, 6.0 MS, 6.1 UNKNOWN, 5.9 MW
84.45288 78.6 deg 304.689 deg Northern Mid-Atlantic Ridge 1995/04/17 07:14:35 GMT (33.8, -38.6) 10 km 5.8 MB, 5.8 MS, 5.9 UNKNOWN, 6.1 MW
83.892815 49.3 deg 36.879 deg Afghanistan-Tajikistan Bord Reg. 1995/08/17 23:14:19 GMT (36.5, 71.2) 239 km 5.7 UNKNOWN, 5.4 MB, 5.6 MW
82.96096 89.4 deg 78.491 deg Samar, Philippines 1995/05/08 18:08:09 GMT (11.6, 125.9) 33 km 5.6 MB, 6.2 MS, 6.3 UNKNOWN, 6.3 MW
82.674095 72.1 deg 95.036 deg Java Sea 1995/05/13 21:00:54 GMT (-5.2, 108.9) 554 km 5.7 MB, 5.9 UNKNOWN, 5.8 MW
81.00485 89.5 deg 84.817 deg Mindanao, Philippines 1995/02/19 00:17:48 GMT (5.2, 126.2) 104 km 5.9 MB, 6.1 UNKNOWN, 6.1 MW

Losers

(4 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude Reason
96.064766 88.7 deg 77.41 deg Samar, Philippines 1995/05/05 04:39:13 GMT (12.6, 125.2) 55 km 5.6 MB, 6.5 UNKNOWN
89.25195 63.4 deg 41.358 deg Southern Xinjiang, China 1995/08/17 00:59:57 GMT (41.6, 88.8) 0.0 km 6.0 MB
59.847595 63.5 deg 41.297 deg Southern Xinjiang, China 1995/05/15 04:05:58 GMT (41.7, 88.8) 0.0 km 6.1 MB
41.003437 97.5 deg 92.992 deg Irian Jaya Region, Indonesia 1995/03/13 10:31:50 GMT (-2.8, 134.3) 33 km 5.5 MB, 5.7 MS, 5.6 UNKNOWN, 6.1 MW