Phase Data
21 MAY 2012 (142)
ot = 03:39:44.93 +/- 1.60 SAMOA ISLANDS REGION
lat = -15.453 +/- 12.5
lon = -171.864 +/- 14.5 MAGNITUDE 4.8 (GS)
dep = 9.9 +/- 2.0
180 km (112 miles) S of APIA, Samoa
180 km (112 miles) SW of PAGO PAGO, American Samoa
209 km (130 miles) ENE of Hihifo, Tonga
2715 km (1686 miles) NNE of Auckland, New Zealand
nph = 141 of 141 se = 0.79 FE=169 A
error ellipse = (124.0, 5.0, 24.4;214.0, 0.0, 16.1;310.0, 84.0, 2.0)
mb = 4.7 (120) ML = 4.9 ( 2) mblg = 4.2 ( 2) md = 4.5 ( 1) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
AFI ePn 03:40:14.17 1.7 1.5 3 d:2.4+2 4.5 L:3.3+1 .65 4.9 AFI
g:1.5+0 .90 4.2
MSVF ePn 03:42:10.78 2.9 9.9 255 MSVF
OUZ eP 03:44:52.71 -3.6 23.6 211 b:2.5+1 .86 4.8 OUZ
KNTN eSn 03:44:56.64 -8.2 12.6 1 KNTN
URZ eP 03:45:06.28 -0.1 24.7 201 b:3.1+1 .68 5.1 URZ
BKZ eP 03:45:15.35 -0.4 25.7 201 b:8.6+1 1.6 5.2 BKZ
HIZ eP 03:45:17.38 1.3 25.8 205 b:4.4+1 .92 5.1 HIZ
BFZ eP 03:45:31.06 2.4 27.2 200 b:6.8+1 1.3 5.2 BFZ
SNZO eP 03:45:41.01 2.6 28.3 202 b:1.1+2 1.4 5.5 SNZO
THZ eP 03:45:47.01 -1.0 29.3 204 b:2.0+1 .68 5.0 THZ
KHZ eP 03:45:52.84 2.1 29.7 202 b:1.7+2 1.9 5.5 KHZ
LTZ eP 03:46:00.92 3.1 30.4 203 b:2.3+1 .52 5.3 LTZ
OXZ eP 03:46:06.07 3.4 31.0 203 b:3.5+1 .58 5.4 OXZ
RAO eS 03:46:18.44 0.9 14.8 201 RAO
STKA eP 03:48:00.77 -2.4 45.3 240 b:2.2+0 .75 4.2 STKA
WB2 eP 03:48:47.05 -2.4 51.3 257 WB2
AS01 eP 03:48:47.79 -3.1 51.5 252 AS01
AS31 eP 03:48:48.02 -3.2 51.5 252 b:3.8+0 .65 4.5 AS31
KMRM eP 03:51:04.15 -0.1 71.2 37 b:1.7+1 .92 5.2 KMRM
KHMM eP 03:51:05.48 -1.4 71.6 37 b:7.9+0 .96 4.8 KHMM
CMB eP 03:51:07.09 -1.0 71.8 41 b:5.5+0 .95 4.6 CMB
AFDM eP 03:51:08.02 -1.2 72.0 40 b:4.3+0 .90 4.5 AFDM
WDC eP 03:51:08.98 -0.7 72.1 37 b:7.2+0 1.2 4.6 WDC
ORV eP 03:51:09.92 0.4 72.1 39 b:4.0+0 1.0 4.4 ORV
MDPB eP 03:51:11.12 -0.8 72.4 42 b:5.0+0 .96 4.6 MDPB
DAC eP 03:51:12.22 -0.7 72.6 44 b:6.6+0 1.3 4.6 DAC
WAKR eP 03:51:13.08 -0.5 72.7 41 b:8.8+0 1.1 4.7 WAKR
VCNR eP 03:51:13.89 -1.7 73.1 40 b:7.9+0 1.0 4.7 VCNR
BEKR eP 03:51:14.09 -0.9 73.0 39 b:4.9+0 .90 4.6 BEKR
YBH eP 03:51:14.49 0.9 72.8 36 b:8.6+0 1.0 4.8 YBH
YERR eP 03:51:14.78 -1.2 73.1 40 b:5.5+0 .90 4.6 YERR
PNTR eP 03:51:14.81 -0.3 73.0 40 b:8.2+0 .94 4.8 PNTR
NV11 eP 03:51:15.93 -2.1 73.5 41 b:5.0-1 1.0 3.6 NV11
PETK eP 03:51:16.05 0.5 73.1 341 PETK
PAHR eP 03:51:16.81 -1.1 73.5 40 b:5.8+0 1.0 4.6 PAHR
NV01 eP 03:51:16.87 -0.7 73.4 41 NV01
HUMO eP 03:51:17.31 1.3 73.2 36 b:7.0+0 1.3 4.6 HUMO
KVN eP 03:51:20.75 0.3 73.9 41 b:4.4+0 .92 4.5 KVN
MOD eP 03:51:21.38 -1.1 74.3 38 b:8.3+0 1.0 4.7 MOD
Y14A eP 03:51:22.63 -1.3 74.5 48 b:3.0+0 .65 4.5 Y14A
SHPR eP 03:51:22.81 -0.4 74.4 44 b:3.6+0 1.0 4.3 SHPR
K05A eP 03:51:23.11 -0.4 74.4 37 b:1.8+1 1.1 5.0 K05A
H04A eP 03:51:26.75 0.4 75.0 34 b:6.0+0 1.0 4.6 H04A
BMN eP 03:51:27.57 -0.7 75.2 40 b:6.0+0 1.0 4.6 BMN
R11A eP 03:51:27.77 0.3 75.1 43 b:3.9+0 1.3 4.3 R11A
PINE eP 03:51:27.99 0.7 75.1 36 b:2.0+1 1.1 5.1 PINE
TUC eP 03:51:28.24 -0.4 75.3 50 b:5.8+0 .95 4.6 TUC
WVOR eP 03:51:29.43 -0.6 75.6 38 b:7.2+0 1.0 4.7 WVOR
YHNB eP 03:51:30.76 -4.0 76.3 301 b:2.1+2 1.9 5.9 YHNB
319A eP 03:51:31.40 -1.2 76.0 52 b:1.4+1 1.1 5.0 319A
X16A eP 03:51:31.44 -0.5 75.9 48 b:4.4+0 1.0 4.5 X16A
J08A eP 03:51:33.85 0.1 76.2 37 b:8.5+0 1.0 4.8 J08A
CCUT eP 03:51:34.30 0.8 76.1 44 b:4.7+0 1.1 4.5 CCUT
U15A eP 03:51:34.82 0.4 76.3 46 b:5.2+0 1.3 4.5 U15A
PSUT eP 03:51:34.91 0.3 76.3 43 b:3.0+0 .92 4.4 PSUT
SZCU eP 03:51:35.34 0.6 76.3 44 b:8.0+0 1.5 4.6 SZCU
D05A eP 03:51:37.40 1.2 76.7 32 b:3.7+1 1.5 5.3 D05A
G08A eP 03:51:39.25 0.5 77.1 35 b:1.1+1 1.3 4.8 G08A
KS01 eP 03:51:40.79 1.1 77.3 315 KS01
MTPU eP 03:51:40.88 1.3 77.2 44 b:9.5+0 1.2 4.7 MTPU
MSU eP 03:51:41.89 1.0 77.4 44 MSU
BMO eP 03:51:42.50 0.0 77.8 36 b:7.1+0 1.4 4.6 BMO
MFID eP 03:51:42.90 0.2 77.8 38 b:3.8+0 1.0 4.4 MFID
DUG eP 03:51:43.47 0.2 77.9 42 b:7.9+0 1.3 4.6 DUG
SUA eP 03:51:46.36 0.4 78.5 10 b:1.1+1 .88 4.9 SUA
TMUT eP 03:51:47.76 1.0 78.5 44 b:1.1+1 1.0 4.8 TMUT
GHO eP 03:51:47.88 -1.4 79.1 11 b:1.3+1 .88 5.0 GHO
LAZ eP 03:51:47.99 -1.5 79.0 50 LAZ
HLID eP 03:51:48.11 0.2 78.7 39 b:8.2+0 1.2 4.7 HLID
HVU eP 03:51:48.35 0.2 78.8 41 b:3.3+0 .82 4.4 HVU
JLU eP 03:51:48.75 -0.8 79.0 43 b:8.3+0 1.3 4.6 JLU
SRU eP 03:51:49.10 0.5 78.9 44 b:7.7+0 1.2 4.6 SRU
MNTX eP 03:51:49.27 -0.6 79.1 53 b:9.9+0 1.0 4.8 MNTX
LLLB eP 03:51:49.37 0.4 79.0 30 b:6.7+0 .90 4.7 LLLB
P17A eP 03:51:49.71 0.9 78.9 44 b:1.0+1 1.1 4.8 P17A
PV04 eP 03:51:51.07 -1.7 79.6 45 b:8.1+0 .88 4.7 PV04
BNM eP 03:51:51.42 0.5 79.2 50 BNM
TCUT eP 03:51:51.60 0.5 79.3 42 b:3.3+1 1.2 5.2 TCUT
TX31 eP 03:51:51.65 -0.1 79.4 56 TX31
eP 03:51:51.87 0.0
LPM eP 03:51:51.67 0.5 79.3 50 LPM
PV05 eP 03:51:52.28 0.4 79.4 46 b:8.3+0 .82 4.8 PV05
PV09 eP 03:51:52.84 0.6 79.5 45 PV09
ANMO eP 03:51:53.49 0.0 79.7 50 b:9.9+0 1.4 4.6 ANMO
CAST eP 03:51:53.58 -1.2 80.1 9 b:3.4+0 .92 4.3 CAST
PV01 eP 03:51:53.60 0.2 79.7 46 b:7.8+0 .84 4.7 PV01
PAX eP 03:51:55.70 -3.1 80.8 12 b:8.2+0 .52 5.0 PAX
TRF eP 03:51:56.45 -0.2 80.4 10 b:8.9+0 .80 4.8 TRF
MCMT eP 03:51:57.33 0.4 80.4 38 MCMT
RND eP 03:51:57.54 0.0 80.6 10 b:1.2+1 1.0 4.8 RND
BPAW eP 03:51:58.20 -0.9 80.9 9 b:4.6+0 1.1 4.4 BPAW
TPAW eP 03:51:58.61 -0.7 80.8 40 b:6.0+0 1.0 4.5 TPAW
MSO eP 03:51:58.62 -0.6 80.8 36 b:5.3+0 1.1 4.5 MSO
MCK eP 03:51:59.22 0.2 80.9 10 b:1.8+1 .88 5.1 MCK
S22A eP 03:51:59.40 0.4 80.7 47 b:6.1+0 .80 4.7 S22A
DLMT eP 03:51:59.44 0.3 80.8 38 b:4.9+0 1.1 4.4 DLMT
REDW eP 03:51:59.49 0.2 80.8 40 b:3.2+0 .95 4.3 REDW
LNIG eP 03:51:59.68 -1.5 81.1 61 b:7.3+0 .90 4.7 LNIG
FXWY eP 03:51:59.69 0.2 80.9 40 b:4.1+0 1.1 4.3 FXWY
SNOW eP 03:52:00.31 0.4 80.9 40 b:4.7+0 .80 4.6 SNOW
PDAR eP 03:52:00.89 -1.1 81.3 41 PDAR
IMW eP 03:52:01.01 0.5 81.0 40 b:3.6+0 .85 4.4 IMW
PD31 eP 03:52:01.65 -0.4 81.3 41 PD31
SMCO eP 03:52:01.88 -0.2 81.3 46 b:1.1+1 1.4 4.7 SMCO
YHB eP 03:52:03.00 1.0 81.3 39 b:6.4+0 .96 4.6 YHB
BOZ eP 03:52:03.15 0.2 81.5 38 b:3.6+0 1.1 4.3 BOZ
WRH eP 03:52:03.34 0.0 81.7 10 b:3.3+1 1.0 5.3 WRH
MLY eP 03:52:03.48 -0.5 81.8 9 b:1.2+1 .92 5.0 MLY
DOT eP 03:52:03.83 0.4 81.7 12 b:2.8+1 1.0 5.3 DOT
SDCO eP 03:52:03.97 0.0 81.7 47 b:1.1+1 1.7 4.6 SDCO
CCB eP 03:52:04.10 -0.3 81.9 10 b:1.8+1 .96 5.1 CCB
YHH eP 03:52:04.10 0.8 81.6 39 b:2.3+1 2.0 4.9 YHH
HRY eP 03:52:05.04 -0.3 82.0 37 HRY
IL1 eP 03:52:05.34 -0.6 82.2 11 IL1
COLA eP 03:52:05.39 -0.1 82.1 10 b:3.4+1 1.1 5.4 COLA
MSTX eP 03:52:05.60 -0.2 82.0 52 b:1.6+1 .95 5.1 MSTX
SCRK eP 03:52:05.64 0.5 82.1 12 b:4.9+0 .80 4.7 SCRK
ILB eP 03:52:05.77 -0.1 82.2 11 ILB
RWWY eP 03:52:06.22 -1.1 82.3 43 b:1.3+1 1.1 5.0 RWWY
IM3 eP 03:52:06.94 0.5 82.3 7 IM3
Q24A eP 03:52:08.55 0.4 82.5 46 b:9.7+0 .95 4.9 Q24A
RLMT eP 03:52:09.59 0.5 82.7 39 b:4.8+0 .95 4.7 RLMT
N23A eP 03:52:10.05 0.3 82.8 44 b:5.8+0 .85 4.8 N23A
GCMT eP 03:52:10.45 0.9 82.8 39 GCMT
DAWY eP 03:52:10.59 -0.1 83.1 14 b:1.1+1 1.0 5.0 DAWY
AMTX eP 03:52:10.75 -1.2 83.2 51 b:1.6+1 1.1 5.1 AMTX
EGAK eP 03:52:11.29 -0.4 83.3 13 b:8.5+0 1.0 4.9 EGAK
K22A eP 03:52:11.65 -0.2 83.2 43 b:9.1+0 1.0 4.9 K22A
ABTX eP 03:52:14.85 -0.5 83.9 54 b:2.1+1 1.1 5.3 ABTX
EGMT eP 03:52:14.97 -0.1 83.9 37 b:1.0+1 1.4 4.9 EGMT
COLD eP 03:52:15.62 0.7 84.0 8 b:1.0+1 1.0 5.0 COLD
BILL eP 03:52:19.33 0.4 84.8 352 b:1.2+1 .90 5.1 BILL
LAO eP 03:52:22.70 0.4 85.3 39 b:6.5+0 1.1 4.7 LAO
TOLK eP 03:52:22.92 0.8 85.4 8 b:8.7+0 .95 4.9 TOLK
INK eP 03:52:34.56 -0.1 88.0 13 b:9.1+0 1.0 5.1 INK
DAMY ePKPbc 03:59:23.31 0.1 145.0 273 DAMY
KHC ePKPdf 03:59:24.46 -0.1 146.1 354 KHC
GEA0 ePKPdf 03:59:25.05 0.0 146.4 353 GEA0
GEC2 ePKPdf 03:59:25.53 0.5 146.4 353 GEC2
PSZ ePKPdf 03:59:25.59 0.9 146.2 346 PSZ
SENINePKPbc 03:59:33.85 -0.2 149.2 1 SENI
Generated 2012 MAY 21 at 04:57 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
