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Earthquake Hazards Program

Magnitude 6.8 TAIWAN

2003 December 10 04:38:11 UTC

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver

Phase Data

Explanation of Parameters


     10 DEC 2003  (344)

     ot  = 04:38:14.83   +/-   0.31              TAIWAN
     lat =      23.058   +/-    5.7
     lon =     121.379   +/-    6.5              MAGNITUDE 6.8 (GS)
     dep =        33.0  (normal depth)

     45 km (25 miles) NNE of T'ai-tung, Taiwan (pop 111,000)
     105 km (65 miles) SSW of Hua-lien, Taiwan (pop 108,000)
     115 km (70 miles) ESE of Chia-i, Taiwan (pop 265,000)
     225 km (140 miles) S of T'AI-PEI, Taiwan

     nph =   58 of 298    se = 1.05    FE=244                            A

     error ellipse = (108.5,  0.0,  8.7; 18.5,  0.0,  7.3;  0.0,  0.0,  0.0)

 mb = 5.9 ( 66)  ML = 5.6 (  1)  mblg = 5.5 (  7)  md = 5.8 (  1)  MS = 6.6 ( 19)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 TATO eP      04:38:46.00   0.3    1.9   3 d:9.6+2     5.8  L:1.0+2 .65 5.6  TATO
      LR      04:39:09.33                  g:1.2+2 1.0 6.1
 INCN eP      04:41:48.67   1.7   15.1  16 g:1.8+0 1.3 5.4  b:1.8+3 1.3 6.2  INCN
      LR      04:45:24.54
 KS15 eP      04:41:52.08   0.9   15.4  20                                   KS15
      LR      04:45:33.65
 MAJO eP      04:42:45.80   0.3   19.8  44 g:7.8-1 1.0 5.3  b:7.4+2 1.0 5.9  MAJO
      LR      04:47:39.48
 CM31 eP      04:43:05.09   2.4   21.5 262 g:4.8-1 .90 5.2  b:3.6+2 .85 5.8  CM31
      LR      04:48:26.87                  S:9.7+2 19. 7.2
 GUMO eP      04:43:30.97   1.7   24.2 109 g:3.7+0 1.0 6.2  b:3.7+3 1.0 6.9  GUMO
      LR      04:49:44.06                  S:1.8+2 20. 6.5
 QIZ  LR      04:43:42.49         11.5 252                                   QIZ
 ULN  eP      04:43:56.94  -1.3   27.3 339 g:4.9-1 1.1 5.3  b:1.1+2 .65 5.6  ULN
      LR      04:51:12.45                  S:4.5+2 20. 7.0
 YSS  eP      04:44:18.38   1.2   29.4  31 g:5.5-1 .95 5.5  b:9.9+2 1.2 6.4  YSS
      LR      04:52:12.92                  S:9.0+1 22. 6.3
 ENH  LR      04:44:20.55         12.8 307                                   ENH
 YAK  eP      04:45:43.13   0.5   39.4   6 b:1.2+2 .95 5.6                   YAK
      LR      04:56:57.18                  S:7.4+1 21. 6.5
 PMG  eP      04:45:56.20  -0.1   41.0 139 b:5.4+2 1.2 6.2                   PMG
      LR      04:57:42.69                  S:1.0+2 20. 6.7
 PET  eP      04:45:57.19  -0.1   41.1  34 b:2.1+3 1.4 6.7                   PET
      LR      04:57:47.83                  S:6.0+1 22. 6.4
 PALK eP      04:46:06.64   0.9   42.1 255                                   PALK
      LR      04:58:15.22
 COCO eP      04:46:09.62   0.9   42.5 217 b:2.8+3 1.6 6.7                   COCO
      LR      04:58:26.07                  S:5.6+1 19. 6.5
 KURK eP      04:46:12.75  -0.4   43.1 321                                   KURK
      LR      04:58:42.83
 MBWA eP      04:46:18.75  -2.0   44.0 182 b:2.0+3 1.5 6.7                   MBWA
      LR      04:59:08.69
 WRAB eP      04:46:23.50  -2.1   44.6 163 b:1.6+3 1.1 6.8                   WRAB
      LR      04:59:25.42                  S:5.0+1 22. 6.4
 BJT  LR      04:46:33.10         17.5 347                                   BJT
 TIXI eP      04:46:56.94  -1.4   48.8   3 b:8.0+1 1.2 5.6                   TIXI
      LR      05:01:26.31                  S:9.3+1 20. 6.8
 CHKZ eP      04:46:57.22  -0.8   48.7 322                                   CHKZ
 BRVK eP      04:46:57.68  -0.4   48.7 321                                   BRVK
      LR      05:01:24.16
 BILL eP      04:47:25.76  -2.2   52.7  20 b:1.2+2 1.1 5.8                   BILL
      LR      05:03:16.81
 ADK  eP      04:47:44.79  -0.1   55.0  42 b:4.5+2 1.2 6.4                   ADK
      LR      05:04:21.76                  S:5.7+0 22. 5.6
 ARU  eP      04:47:51.64  -1.5   56.1 324 b:3.1+2 .95 6.3                   ARU
      LR      05:04:54.69                  S:9.7+1 19. 6.9
 NIKO eP      04:48:19.02  -0.1   59.8  41                                   NIKO
 TNA  eP      04:48:27.44  -1.4   61.3  27 b:1.1+2 1.4 5.8                   TNA
      LR      05:07:21.52                  S:2.3+1 21. 6.3
 SDN  eP      04:48:49.72  -1.7   64.7  38 b:4.9+2 1.3 6.4                   SDN
 MDJ  LR      04:48:57.34         22.5  15                                   MDJ
 GNI  eP      04:48:58.07   0.1   65.6 305 b:4.9+2 1.2 6.5                   GNI
      LR      05:09:24.90                  S:4.8+1 20. 6.7
 KIV  eP      04:49:03.14  -0.1   66.4 309 b:1.1+3 1.0 6.9                   KIV
      LR      05:09:48.96                  S:1.1+2 21. 7.0
 IMA  eP      04:49:06.75  -0.5   67.1  26 b:1.8+2 .90 6.2                   IMA
 OBN  eP      04:49:14.51  -1.2   68.5 322 b:5.7+2 1.1 6.5                   OBN
      LR      05:10:47.26                  S:6.3+1 20. 6.8
 KDAK eP      04:49:16.26  -0.8   68.7  35 b:2.5+2 .95 6.3                   KDAK
      LR      05:10:54.13
 KDC  P       04:49:18.15   0.7   68.8  35 b:3.9+2 1.1 6.4                   KDC
 MCK  P       04:49:20.38  -1.2   69.4  28 b:2.0+2 1.4 6.0                   MCK
      LR      05:11:15.00
 PMR  P       04:49:23.31  -0.1   69.8  31 b:1.3+2 1.2 5.9                   PMR
      LR      05:11:23.83
 COLA P       04:49:23.36   0.3   69.7  27 b:4.5+1 .95 5.5                   COLA
      LR      05:11:22.21
 TAU  P       04:49:25.18   1.0   69.9 160 b:3.3+3 1.6 7.1X                  TAU
      LR      05:11:26.59                  S:4.2+1 20. 6.7
 SML  P       04:49:25.36  -0.2   70.1  30                                   SML
 SPB4 P       04:49:28.90   0.4   70.6 348                                   SPB4
      LR      05:11:48.35
 ARE0 P       04:49:29.00   0.2   70.7 338                                   ARE0
      LR      05:11:49.07
 THY  P       04:49:30.84   0.3   70.9  28                                   THY
 KBS  P       04:49:32.62   0.8   71.2 349 b:1.3+2 1.0 5.9                   KBS
      LR      05:12:04.08
 DIV  P       04:49:34.48   0.7   71.4  31 b:6.6+2 1.3 6.5                   DIV
      LR      05:12:11.74
 EYAK P       04:49:35.96   1.4   71.6  31                                   EYAK
 DAWY P       04:49:45.32  -0.2   73.4  27                                   DAWY
 INK  P       04:49:48.27  -1.4   74.2  22 b:9.8+1 1.0 5.8                   INK
 POHA P       04:50:06.66   3.3X  76.4  74 b:8.7+2 1.6 6.5                   POHA
      LR      05:14:32.92
 SIT  P       04:50:11.67   1.2   77.8  33 b:1.6+2 1.0 6.0                   SIT
      LR      05:15:14.52
 NAO01P       04:50:18.90  -0.7   79.5 332 b:6.9+1 .85 5.7                   NAO0
      LR      05:16:02.49
 RES  P       04:50:20.72   0.2   79.7   9 b:8.1+1 1.0 5.7                   RES
 DLBC P       04:50:21.52   0.2   79.8  30                                   DLBC
 PSZ  P       04:50:25.49   0.3   80.5 318 b:1.6+2 1.2 5.9                   PSZ
 KONO P       04:50:26.38   0.6   80.7 332 b:2.5+2 1.6 6.0                   KONO
      LR      05:16:35.20
 SNZO P       04:50:27.42   0.4   80.9 142 b:3.3+2 1.2 6.2                   SNZO
      LR      05:16:41.12
 MORC P       04:50:27.65  -0.9   81.2 320 b:1.2+2 1.2 5.8                   MORC
 RUE  P       04:50:34.01   0.9   82.1 324                                   RUE
 YKW3 P       04:50:41.45  -0.9   83.9  23                                   YKW3
 HIA  LR      04:50:41.51         26.2 358                                   HIA
 STU  P       04:50:57.70   2.3X  86.4 322                                   STU
 AQU  eP      04:50:59.75   1.0   87.1 315                                   AQU
 WLF  P       04:51:01.43   0.2   87.7 324 b:1.8+2 1.1 6.2                   WLF
 BMW  P       04:51:04.11  -6.1X  89.5  39                                   BMW
 ESK  P       04:51:06.94   0.3   88.8 332 b:1.6+2 1.3 6.2                   ESK
      LR      05:20:27.10
 PGC  P       04:51:07.60   3.9X  88.2  37 b:1.3+2 .95 6.2                   PGC
 GNW  P       04:51:10.63   2.3X  89.1  38                                   GNW
      LR      05:20:36.22
 RPW  P       04:51:10.91   1.4   89.4  36                                   RPW
 OCWA P       04:51:13.64   9.4X  88.3  38 b:2.1+2 1.3 6.3                   OCWA
      LR      05:20:11.57
 NLW  P       04:51:15.15   1.6X  90.2  36                                   NLW
 RMW  P       04:51:17.89   6.5X  89.8  37                                   RMW
 DPW  P       04:51:20.41   1.1X  91.5  36                                   DPW
 VGB  P       04:51:21.23   2.0X  91.5  39                                   VGB
 NEW  P       04:51:21.72   0.9X  91.8  35 b:6.4+1 1.0 6.0                   NEW
      LR      05:21:52.92
 HAWA P       04:51:22.01   2.0X  91.7  37 b:3.7+1 .98 5.8                   HAWA
      LR      05:21:48.02
 KEBM P       04:51:22.09   5.7X  90.8  42                                   KEBM
 SHW  P       04:51:22.95   9.2X  90.2  39                                   SHW
 YBH  P       04:51:25.88   1.9X  92.5  42 b:2.0+1 1.0 5.5                   YBH
      LR      05:22:11.13
 LNOR P       04:51:26.59   1.8X  92.7  37                                   LNOR
 WALA P       04:51:27.10   0.9X  93.0  33 b:1.0+1 1.3 5.1                   WALA
 LSA  LR      04:51:28.19         27.8 290                                   LSA
 FCC  P       04:51:29.42   1.8X  93.4  18 b:7.1+1 1.1 6.0                   FCC
 MOD  P       04:51:30.91   0.5X  93.8  41 b:3.0+1 1.0 5.7                   MOD
      LR      05:22:50.49
 MSO  P       04:51:34.17   1.3X  94.4  35 b:1.4+1 1.0 5.3                   MSO
      LR      05:23:06.33
 CHMT P       04:51:35.14   0.8X  94.7  34                                   CHMT
 WVOR P       04:51:35.84   2.3X  94.5  40 b:9.0+1 1.7 5.9                   WVOR
      LR      05:23:10.02
 OHCM P       04:51:35.91   2.3X  94.6  44                                   OHCM
 BEKR P       04:51:36.90   1.1X  95.0  43 b:2.2+1 .98 5.5                   BEKR
 CMB  P       04:51:41.34   0.9X  96.0  44 b:1.2+1 .80 5.4                   CMB
      LR      05:23:52.94
 HRY  P       04:51:41.56   3.3X  95.6  34                                   HRY
 WCN  P       04:51:41.75   2.7X  95.7  43 b:3.6+1 1.3 5.6                   WCN
 HLID P       04:51:43.02   1.5X  96.3  37 b:2.4+3 1.7 7.4X                  HLID
      LR      05:23:59.27
 BOZ  P       04:51:43.20   1.2X  96.4  34 b:1.2+1 2.2 5.0                   BOZ
      LR      05:24:02.93
 MCMT P       04:51:45.12   3.4X  96.3  36                                   MCMT
 BMN  P       04:51:45.51   2.5X  96.6  41 b:4.4+1 1.5 5.7                   BMN
      LR      05:24:08.70
 MNV  P       04:51:48.19   2.3X  97.2  43 b:3.1+1 1.5 5.6                   MNV
      LR      05:24:26.79
 YMR  P       04:51:50.47   3.8X  97.4  35                                   YMR
      LR      05:24:31.65
 ELK  P       04:51:51.08   3.5X  97.6  40 b:1.1+2 2.3 6.0                   ELK
      LR      05:24:36.90
 TPH  P       04:51:51.56   2.0X  98.0  43 b:1.1+1 .95 5.3                   TPH
      LR      05:24:49.59
 QLMT P       04:51:52.26   7.2X  97.0  35                                   QLMT
 LSZ  P       04:51:52.74   0.0X  98.7 257 b:6.6+1 1.0 6.1                   LSZ
      LR      05:25:09.22
 ISA  P       04:51:53.83   1.5X  98.7  45 b:2.4-2 1.4 2.5X                  ISA
      LR      05:25:07.91
 MVU  e       04:51:55.42  -6.7X 100.8  40                                   MVU
      LR      05:26:08.97
 HWUT P       04:51:55.68   1.2X  99.1  37 b:8.2+0 1.3 5.1                   HWUT
      LR      05:25:21.09
 DUG  P       04:51:58.33   2.9X  99.3  39 b:5.6+1 2.2 5.7                   DUG
      LR      05:25:27.40
 HVU  P       04:51:58.74   7.9X  98.3  38                                   HVU
 MAW  P       04:51:58.90   1.0X 100.1 199 b:3.8+1 1.0 5.8                   MAW
      LR      05:25:48.76
 GSC  P       04:52:00.17   1.8X 100.0  45                                   GSC
      LR      05:25:45.13
 BGU  P       04:52:00.38   7.6X  98.8  39                                   BGU
      e       04:52:20.88
 TPNV P       04:52:01.91   6.5X  99.3  43 b:9.1+0 .95 5.3                   TPNV
      LR      05:25:26.65
 MSU  P       04:52:04.79   2.6X 100.8  40                                   MSU
 NLU  P       04:52:05.68   7.4X  99.9  39                                   NLU
 PFO  P       04:52:07.30   3.4X 101.2  46 b:1.2+1 1.1 5.4                   PFO
      LR      05:26:20.91
 NEN  P       04:52:07.53   4.6X 101.0  44                                   NEN
 PV10 P       04:52:15.17   4.4X 102.7  38                                   PV10
 GLA  P       04:52:16.08   5.9X 102.6  46                                   GLA
      LR      05:27:01.32
 VNDA P       04:52:16.25   4.9X 103.2 172 b:7.3+0 .95 5.4                   VNDA
      LR      05:27:16.09
 LBTB P       04:52:19.12   1.1X 104.4 249 b:2.5+1 1.5 5.8                   LBTB
      LR      05:27:50.19
 LAZ  e       04:56:41.51   2.8X 106.6  40                                   LAZ
      e       04:56:42.31
 TUC  P       04:56:41.59   4.6X 105.7  44                                   TUC
      LR      05:28:29.66
 SDCO P       04:56:43.64   7.6X 105.2  37                                   SDCO
      LR      05:28:13.40
 BLO  P       04:56:49.89  -0.1X 112.8  23                                   BLO
 WCI  P       04:56:52.29   0.4X 113.7  24                                   WCI
      LR      05:32:17.47
 ACSO P       04:56:52.79   2.3X 113.1  20                                   ACSO
      LR      05:31:58.57
 WMOK P       04:56:52.92   6.1X 111.0  35                                   WMOK
      LR      05:31:00.40
 JCT  P       04:56:53.05   0.9X 113.7  38                                   JCT
      LR      05:32:16.53
 MIV  P       04:56:54.96   7.0X 111.8  12                                   MIV
 MVL  P       04:56:55.22   0.8X 115.1  15                                   MVL
 UALR P       04:56:55.31   2.5X 114.2  30                                   UALR
 CCM  P       04:56:55.77   7.4X 111.9  27                                   CCM
      LR      05:31:25.89
 OXF  P       04:56:55.84   0.1X 115.7  28                                   OXF
      LR      05:33:13.82
 PLAL e       04:56:56.04   0.0X 115.9  27                                   PLAL
      LR      05:33:18.41
 BINY P       04:56:56.72   6.2X 113.1  14                                   BINY
      LR      05:31:59.94
 PWV  P       04:56:57.04   0.1X 116.3  20                                   PWV
 SIUC P       04:56:57.31   6.8X 113.0  26                                   SIUC
 ELN  P       04:56:57.42   0.1X 116.5  20                                   ELN
 FWV  P       04:56:58.39   1.7X 116.2  20                                   FWV
 HRV  e       04:56:58.50   6.9X 113.7  10                                   HRV
      LR      05:32:16.05
 CPCT P       04:56:58.72   0.8X 116.8  24                                   CPCT
 LRAL P       04:56:59.60  -0.6X 118.0  27                                   LRAL
      LR      05:34:19.14
 PAL  P       04:56:59.89   6.3X 114.7  13                                   PAL
 JSC  P       04:57:02.12   0.0X 119.0  21                                   JSC
 GOGA e       04:57:03.20   1.0X 119.1  24                                   GOGA
      LR      05:34:49.32
 SWET P       04:57:03.38   6.0X 116.5  25                                   SWET
 SNAA P       04:57:06.46  -0.7X 122.2 198                                   SNAA
 COW  P       04:57:06.82   2.8X 120.1  21                                   COW
 DWPF         04:57:14.06   1.2X 124.6  25                                   DWPF
      LR      05:37:26.60
 PMSA P       04:57:38.91   1.3X 138.1 177                                   PMSA
      LR      05:43:53.46
 HUMP P       04:57:40.50   0.9X 138.4  10                                   HUMP
 ICM  P       04:57:41.80   2.0X 138.6  11                                   ICM
 OTAV P       04:58:00.82   1.2X 149.9  43                                   OTAV
      LR      05:49:27.66
 EFI  P       04:58:06.26   6.1X 151.4 181                                   EFI
      LR      05:50:12.29
 MA2  LR      04:58:11.05         42.0  22 S:7.0+1 20. 6.5                   MA2
 TRQA P       04:58:17.61   1.2X 164.8 170                                   TRQA
      LR      05:56:32.81
 WAKE LR      04:58:19.78         42.3  86 S:2.9+0 19. 5.2X                  WAKE
 CPUP P       04:58:24.25   1.5X 176.5 200                                   CPUP
      LR      06:02:08.15
 FX1  LR      05:01:34.03         49.1  39                                   FX1
 SMY  LR      05:01:48.35         49.6  40 S:8.0+1 22. 6.7                   SMY
 MIDW LR      05:04:21.91         55.0  71                                   MIDW
 LVZ  LR      05:10:23.47         67.6 336                                   LVZ
 FIB  LR      05:11:12.00         69.3  31                                   FIB
 KIP  LR      05:13:14.76         73.7  73                                   KIP
 RAR  LR      05:20:18.15         88.5 114                                   RAR
 COR  LR      05:21:15.60         90.5  40                                   COR
 HUMO LR      05:21:52.84         91.8  42                                   HUMO
 WDC  LR      05:22:32.51         93.2  43                                   WDC
 HOPS LR      05:22:47.97         93.8  45                                   HOPS
 FFC  LR      05:22:57.40         94.1  24                                   FFC
 LKWY LR      05:24:42.09         97.8  35                                   LKWY
 AHID LR      05:25:06.25         98.6  36                                   AHID
 DAC  LR      05:25:13.81         98.9  45                                   DAC
 SNCC LR      05:25:28.06         99.4  48                                   SNCC
 ESLA LR      05:25:29.31         99.4 320                                   ESLA
 BW06 LR      05:25:29.92         99.4  35                                   BW06
 MWC  LR      05:25:40.03         99.8  46                                   MWC
 ULM  LR      05:25:43.38         99.9  23                                   ULM
 LDFC LR      05:26:20.28        101.2  44                                   LDFC
 RSSD LR      05:26:22.29        101.3  32                                   RSSD
 SCHQ LR      05:26:46.17        102.1   5                                   SCHQ
 WUAZ LR      05:27:19.24        103.3  42                                   WUAZ
 ISCO LR      05:27:29.60        103.6  35                                   ISCO
 SBA  LR      05:27:42.73        104.1 171                                   SBA
 ANMO LR      05:28:54.29        106.6  40                                   ANMO
 JFWS LR      05:29:39.11        108.2  24                                   JFWS
 KSU1 LR      05:29:53.38        108.7  30                                   KSU1
 PQI  LR      05:30:33.47        110.1   7                                   PQI
 NCB  LR      05:31:21.94        111.8  12                                   NCB
 LBNH LR      05:31:26.19        111.9  10                                   LBNH
 EMMW LR      05:31:30.44        112.1   7                                   EMMW
 LTX  LR      05:31:34.87        112.2  42                                   LTX
 HNH  LR      05:31:39.30        112.4  11                                   HNH
 FFD  LR      05:31:48.84        112.7  10                                   FFD
 QUA2 LR      05:32:18.46        113.8  11                                   QUA2
 MIAR LR      05:32:19.07        113.8  31                                   MIAR
 WES  LR      05:32:20.54        113.8  10                                   WES
 BRYW LR      05:32:32.48        114.3  11                                   BRYW
 MCWV LR      05:32:40.42        114.5  18                                   MCWV
 WVT  LR      05:32:52.97        115.0  26                                   WVT
 PTCN LR      05:33:06.07        115.4 108                                   PTCN
 HKT  LR      05:33:30.96        116.3  36                                   HKT
 CBN  LR      05:33:38.38        116.6  16                                   CBN
 BLA  LR      05:33:40.18        116.6  19                                   BLA
 DBIC LR      05:35:08.44        119.7 293                                   DBIC
 BBSR LR      05:37:26.77        124.6   6                                   BBSR
 RPN  LR      05:41:59.33        134.1 106                                   RPN
 SJG  LR      05:44:01.59        138.4  11                                   SJG
 PAYG LR      05:45:44.60        142.0  59                                   PAYG
 RCBR LR      05:50:34.12        152.2 305                                   RCBR
 BDFB LR      05:57:52.51        167.6 305                                   BDFB



 Generated 2003 DEC 10 at 17:30 UTC


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