cvičení 14 Zpracování seismických dat, podzim 2011
Odvození fokálního mechanismu – metoda prvních nasazení
- použijeme programy z programového balíku FOCAL
Pro vybrané seismické jevy vytvořte soubor s údaji o polaritě P-vlny, epicentrální vzdálenosti
a azimutu od zdroje. Pomocí programu Pman.exe zobrazte data do grafu a zkuste určit možné
fokální mechanismy.
a) 14 FEB 2008 ( 45)
ot = 10:09:23.43 +/- 0.19 SOUTHERN GREECE
lat = 36.646 +/- 4.1
lon = 21.833 +/- 3.2 MAGNITUDE 6.9 (GCMT)
dep = 29.0 (geophysicist)
mb = 6.3 (186) ML = 6.0 ( 3) mblg = 5.4 ( 30) md = 0.0 ( 0) MS = 6.6 (172)
sta phase arrival res dist azm amp per mag amp per mag sta
CEL iPnd 10:10:35.02 -1.4 5.0 291 d:6.8+2 6.7X L:1.4+1 .85 6.0 CEL
TIR iPnc 10:10:37.28 1.6 4.9 343 d:5.4+2 6.5X L:2.6+1 .95 6.2 TIR
WDD ePnd 10:10:45.78 -3.9X 6.0 265 d:5.1+2 6.9X L:2.2+1 .35 6.4X WDD
TIRR iPnc 10:11:36.43 1.4X 9.3 31 d:5.7+2 8.3X L:1.8+0 1.2 5.9X TIRR
KIV iPc 10:13:25.76 0.7 17.5 59 g:1.5+0 1.0 5.5 b:8.4+2 .70 6.0 KIV
TAM iPd 10:13:49.01 -2.0 19.7 230 g:7.8-1 1.1 5.3 b:7.8+2 1.1 5.9 TAM
MTE ePd 10:14:25.23 -3.1 23.2 288 g:5.9-1 1.2 5.3 b:5.9+2 1.2 6.0 MTE
KBL iPc 10:16:40.08 -0.3 38.1 79 b:5.4+2 1.0 6.3 KBL
DBIC iPd 10:16:40.41 -3.0 38.5 226 b:5.7+2 .96 6.3 DBIC
TLY iPc 10:19:10.00 -0.2 57.6 47 b:9.3+2 1.6 6.6 TLY
RCBR ePd 10:20:21.89 -1.2 68.5 245 b:2.2+2 1.3 6.1 RCBR
GAMB ePc 10:21:25.27 -0.7 79.3 6 b:1.1+2 1.0 5.8 GAMB
SKAG ePc 10:21:42.69 0.3X 82.4 348 b:1.7+2 1.1 6.0 SKAG
b) 28 OCT 2008 (302)
ot = 23:09:57.65 +/- 0.10 PAKISTAN
lat = 30.639 +/- 2.3
lon = 67.351 +/- 1.7 MAGNITUDE 6.4 (UCMT)
dep = 15.0 (geophysicist)
60 km (35 miles) NE of Quetta, Pakistan (pop 560,000)
190 km (120 miles) SE of Kandahar, Afghanistan
195 km (120 miles) NNE of Kalat, Pakistan
640 km (400 miles) WSW of ISLAMABAD, Pakistan
mb = 6.3 (215) ML = 0.0 ( 0) mblg = 5.7 ( 3) md = 0.0 ( 0) MS = 6.6 (188)
sta phase arrival res dist azm amp per mag amp per mag sta
KBL iPnd 23:11:03.45 2.8 4.1 20 KBL
AML iPd 23:12:55.08 -0.9 12.5 22 AML
AAK iPnd 23:13:04.81 -0.8 13.3 24 AAK
ABKARiPd 23:14:24.34 1.1 19.4 345 ABKA
MK31 ePd 23:14:26.40 -1.5 19.8 31 MK31
LSA ePc 23:14:37.95 1.3 20.6 87 g:2.9+0 1.0 5.9 b:8.3+3 1.4 6.9 LSA
BRVK iPd 23:14:56.56 0.1 22.5 5 g:1.8+0 1.2 5.7 b:1.8+3 1.2 6.4 BRVK
KIV iPc 23:15:08.79 0.7 23.6 311 g:1.5+0 1.4 5.6X b:1.5+3 1.4 6.3 KIV
ZAA0 ePd 23:15:33.35 -0.9 26.5 23 ZAA0
CSS iPc 23:15:55.53 0.1 28.8 288 b:1.8+3 2.7 6.4 CSS
CHTO iPc 23:16:13.41 -0.5 30.9 105 b:1.4+3 1.1 6.7 CHTO
KIEV ePc 23:16:46.29 -0.2 34.7 316 b:3.4+2 1.0 6.2 KIEV
ULN ePc 23:16:48.20 0.6 34.8 49 b:1.7+2 1.2 5.8 ULN
ENH iPc 23:17:00.36 0.7 36.2 80 b:6.3+3 1.7 7.2 ENH
BUR08ePc 23:17:01.17 0.3 36.3 310 BUR0
MSEY ePc 23:17:06.32 0.3 36.9 200 b:4.7+2 1.4 6.1 MSEY
DGAR ePd 23:17:17.93 1.5 38.1 172 b:1.1+3 1.8 6.3 DGAR
PSZ ePc 23:17:31.98 1.0 39.9 309 b:4.5+2 .90 6.2 PSZ
BJT ePc 23:17:36.65 0.9 40.5 63 b:2.1+2 .70 6.0 BJT
IPM iPc 23:17:39.57 -0.4 41.0 123 b:1.4+3 1.5 6.4 IPM
MORC ePc 23:17:46.23 0.5 41.7 312 b:2.7+2 1.1 5.9 MORC
KMBO iPc 23:17:54.50 0.5 42.6 228 b:1.2+3 2.1 6.2 KMBO
KHC ePc 23:18:05.84 -0.2 44.2 311 b:1.7+2 1.4 5.7 KHC
ARE0 ePd 23:18:17.00 0.7 45.5 341 ARE0
TUE ePc 23:18:27.95 -0.4 47.0 307 b:6.1+2 1.5 6.4 TUE
SSLB ePc 23:18:35.48 0.8 47.8 85 b:2.8+3 1.2 7.2 SSLB
WLF ePc 23:18:44.85 0.8 49.1 311 b:2.5+2 1.0 6.2 WLF
MDJ ePc 23:18:51.90 -0.1 50.1 55 b:1.4+3 1.9 6.6 MDJ
TAM iPc 23:19:28.92 -1.3 55.2 278 b:5.4+2 2.2 6.2 TAM
ESLA ePc 23:19:46.55 -0.7 57.6 300 b:1.2+2 1.4 5.7 ESLA
BILL ePc 23:20:38.65 0.8 65.2 24 b:1.0+3 2.1 6.6 BILL
LIC iPc 23:21:18.20 -1.3 71.7 266 b:5.8+2 1.3 6.5 LIC
COLA ePc 23:22:11.44 0.5 80.9 14 b:1.3+2 1.0 5.9 COLA
cvičení 14 Zpracování seismických dat, podzim 2011
WRAB ePc 23:22:14.78 -0.8 81.7 119 b:5.2+2 1.2 6.5 WRAB
DAWY ePc 23:22:23.97 0.5 83.3 11 DAWY
FORT ePd 23:22:27.02 -0.4 84.0 131 b:4.4+2 1.1 6.6 FORT
SEW ePc 23:22:30.28 -0.1 84.7 18 b:5.5+2 1.5 6.6 SEW
FFC ePc 23:23:17.05 -0.1 94.5 354 b:1.7+2 1.1 6.4 FFC
c) 26 DEC 2007 (360)
ot = 22:04:56.30 +/- 0.42 FOX ISLANDS, ALEUTIAN ISLANDS
lat = 52.586 +/- 2.9
lon = -168.204 +/- 1.9 MAGNITUDE 6.4 (GCMT)
dep = 36.4 +/- 3.3
mb = 5.9 (229) ML = 0.0 ( 0) mblg = 0.0 ( 0) md = 0.0 ( 0) MS = 6.2 (175)
sta phase arrival res dist azm amp per mag amp per mag sta
GAMB ePnc 22:07:39.28 3.3X 11.4 352 b:6.5+0 .52 5.0X GAMB
COLA ePnc 22:08:37.64 -2.1 16.1 32 b:3.4+2 .95 5.4 COLA
DAWY ePnc 22:09:11.74 -1.3 18.8 41 DAWY
PET iPd 22:09:25.10 0.2 19.9 285 PET
SEY iPd 22:09:57.60 -0.4 23.0 312 SEY
TIXI iPd 22:11:26.00 -0.6 32.9 329 TIXI
YAK ePc 22:11:30.30 -2.0 33.6 311 b:1.7+1 .55 5.2 YAK
BW06 ePd 22:12:25.16 0.4 39.7 80 b:1.4+2 .55 5.9 BW06
MAJO ePc 22:12:30.10 -0.7 40.4 269 b:2.7+2 .90 6.0 MAJO
CBKS ePc 22:13:28.63 -2.6 48.0 78 b:2.9+2 1.1 6.2 CBKS
DAG ePd 22:13:41.40 -0.7 49.5 9 b:9.3+1 .80 5.9 DAG
ULN iPd 22:13:56.80 -0.8 51.4 301 ULN
ARU iPd 22:15:29.90 -0.5 64.8 333 ARU
PUL ePd 22:15:45.80 0.9 67.0 350 PUL
PVCC iPc 22:16:46.50 0.3 77.2 358 PVCC
KIV ePd 22:17:04.00 1.2 80.2 338 KIV
GNI ePd 22:17:19.60 0.3 83.3 335 GNI
UPM iPc 22:17:24.50 -0.3 84.4 355 UPM
ULC iPc 22:17:30.40 -0.3 85.6 354 ULC
QUE iPc 22:17:35.00 9.1X 84.6 315 QUE
d) 22 FEB 2006 ( 53)
ot = 22:19:07.73 +/- 0.19 MOZAMBIQUE
lat = -21.259 +/- 4.7
lon = 33.480 +/- 7.4 MAGNITUDE 7.0 (GS)
dep = 11.0 (geophysicist)
mb = 6.5 ( 72) ML = 0.0 ( 0) mblg = 5.9 ( 3) md = 0.0 ( 0) MS = 7.5 (145)
sta phase arrival res dist azm amp per mag amp per mag sta
BOSA ePnc 22:21:31.94 -5.8X 10.4 224 g:6.2+1 1.0 6.8 b:6.0+1 .70 6.1X BOSA
TSUM ePnc 22:22:33.13 -7.6X 15.1 275 b:2.9+3 .65 6.8 TSUM
SUR ePnc 22:22:43.45 -7.1X 15.8 223 b:7.2+3 .85 6.9 SUR
KMBO ePd 22:23:44.57 0.1 20.3 11 b:2.2+3 1.4 6.3 KMBO
DGAR ePd 22:26:41.19 -2.2 40.1 76 b:1.4+3 1.1 6.5 DGAR
PALK ePd 22:28:34.31 -0.4 54.3 64 b:1.9+3 1.7 6.8 PALK
SNAA iPd 22:28:37.00 1.3 54.6 193 SNAA
GVD ePd 22:28:49.69 -0.2 56.5 351 b:3.1+2 1.1 6.2 GVD
HYB ePd 22:29:03.50 -1.3 58.6 52 b:7.9+2 1.0 6.8 HYB
APE Pc 22:29:04.99 1.0 58.5 353 APE
BRTR ePc 22:29:18.80 -0.2 60.7 0 BRTR
CASY ePd 22:29:50.48 -0.4 65.5 154 b:6.8+2 1.3 6.7 CASY
VRI Pd 22:30:02.77 1.7 67.1 355 VRI
BZS Pd 22:30:05.50 2.3 67.4 351 BZS
VLC ePd 22:30:07.92 -1.8 68.4 342 b:1.9+2 1.3 6.1 VLC
IAS Pc 22:30:10.95 2.1 68.3 356 IAS
BURARPd 22:30:13.98 1.1 68.9 354 BURA
QSPA iPc 22:30:14.90 2.4 68.9 180 b:3.1+2 1.0 6.4 QSPA
VRAC Pc 22:30:32.05 1.7 71.8 349 VRAC
BJT ePd 22:32:43.37 -0.9 98.0 50 b:2.1+2 1.7 6.5 BJT
obecný postup:
a) Spojte úsečkou příslušné údaje o epicentrální vzdálenosti a amplitudě (zvětšené o zesílení)
b) Odečtěte magnitudo Ml