Information message about a series of earthquakes in the south of Iran on November 27, 2005, which caused destruction and human victims. |
| Destructive earthquake with magnitude М=5.9 has taken place on November 27, 2005 in the south of Iran at 13:22 Moscow time (10:22 GMT). |
| Parameters of the earthquake
have been determined in the Alert Service (AS) of Information
Processing Center (IPC) of Geophysical Survey of RAS in Obninsk with station data
obtained from digital and analog seismic stations of Russia, countries of CIS
and from abroad. Alert message on this earthquake has been delivered in 25 min after
registration to the Ministry of Emergency of the Russian Federation (EMERCOM). |
| Preliminary processing has been done with data from 25 stations, accurate processing - with data 33 stations. |
| Fig. 1 presents fragments of records obtained from digital stations: Garni (16.2 degrees), Kislovodsk (20.2 degrees), Ala-Archa (21.9 degrees), Borovoe (28.3 degrees), Kurchatov (29.5 degrees), Arti (29.7 degrees). Fig. 2 presents fragments of records obtained from digital stations: Obninsk (31 degrees), Vasula (38 degrees), Hailar (53 degrees), Yakutsk (59 degrees), Tiksi (59.5 degrees), Yuzhno-Sakhalinsk (69 degrees). |
Figure 1
| 
Figure 2
|
|
| IPC GS RAS also has obtained information with parameters of this event from some seismological centers, these data are given in table 1: |
| Table 1 |
| NN |
Time in origin h-min-s (GMT) |
Lat degr. |
Lon degr. |
Depth km |
N s/st |
Ms/ N |
mb/ N |
I0 calc |
GAP |
Center | | 1 |
10-22-17.40 |
26.8 |
55.9 |
10 |
33 |
5.90/15 | 6.10/9 | 8-8.5 | 147 | IPC GS RAS (Accurate) | | 2 |
10-22-20.0 |
26.67 |
55.95 |
33 |
25 |
5.9/11 | 6.1/7 | 6-7 | 251 | IPC GS RAS (Preliminary) | | 3 |
10-22-17.3 |
26.73 |
55.82 |
10 |
420 |
| 6.1 | | 30 | CSEM | | 4 |
10-22-19.7 |
26.82 |
55.84 |
10 |
106 |
5.8/108 | 6.0/63 | | 29 | NEIC (Accurate) | | 5 |
10-22-23.5 |
26.84 |
55.83 |
35 |
106 |
| 6.0/63 | | 29 | NEIC (Preliminary) | | 6 |
10-22-23.6 |
26.83 |
55.73 |
10 |
24 |
5.9Mn | | | | IGUT | |
| IPC GS RAS - Informational Processing Center, Geophysical Survey, Russian Academy of Sciences |
| CSEM - European - Mediterranean seismological center |
| NEIC - National Earthquakes Information Center of US Geological Service |
| IGUT - Institute of Geophysics, University of Tehran |
| Epicenter |
| Epicenter of this earthquake is shown on fig. 3 located in the south of Iran at 60 kilometers from Bandar-Abbas port (province Hormozgan). |
Figure 3 |
|
| Aftershock |
| The maim strike was accompanied with Aftershocks. The strongest of them was registered by Geophysical Survey of RAS and by Institute of geophysics of Teheran University. |
| N |
Date & Time (GMT)
yy-mm-dd hh:mm:sec |
Lat
degr. |
Lon
degr. |
Depth
km |
N
station |
Ms/ N |
mb/ N |
Io
calc. |
Region |
| 20053100 | 2005-11-27 11:13:12.0 | 26.81 | 55.86 | 33 | 22 | - | 5.3/ 5 | 4-4.5 | Southern Iran | | 20053101 | 2005-11-27 12:05:40.0 | 27.02 | 55.89 | 33 | 12 | - | 4.7/ 4 | 2.5-3 | Southern Iran | | 20053106 | 2005-11-27 16:30:37.0 | 26.79 | 55.98 | 20 | 26 | 5.2/ 11 | 5.6/ 6 | 6-6.5 | Southern Iran | | 20053109 | 2005-11-27 20:29:28.0 | 26.68 | 56.44 | 33 | 6 | 3.6/ 3 | 4.6/ 3 | 3 | Southern Iran | | 20053110 | 2005-11-27 20:47:21.0 | 26.89 | 56.21 | 33 | 7 | 3.1/ 4 | 4.0/ 3 | 2-2.5 | Southern Iran | |
| Macroseismic manifestations |
| From ITAR TASS data this earthquake killed 13 people, nearly one hundred are injured. The shabby residential buildings are mainly destroyed on Qesm Island. This earthquake also has been felt in the north of UAE. |
| Focal mechanism and seismic moment of the earthquake |
| Focal mechanism solutions obtained from NEIC (USA) and Harvard Center (USA) data are presented on fig. 4 - 5 in stereographical projection (low hemisphere, waves of compression are in dark color) and in table 2. These solutions are identical. The earthquake 27.11.2005 has happened under the action of compression oriented in along meridian direction . Both nodal planes have north-east-south-west traveling direction. The type of motion along both planes - thrust. The value of seismic moment Мо in accordance with NEIC makes 7.3* 10** 17 n*m, the value of moment magnitude - Mw = 5.9. The value of seismic moment Мо in accordance with Harvard makes 1.1* 10** 18 n*m, the value of moment magnitude - Mw = 6.0.
|
| Table 2 |
| Axes of main strengths |
Nodal planes |
Center |
| T |
P |
N |
NP1 |
NP2 |
| Pl |
Azm |
Pl |
Azm |
Pl |
Azm |
Stk |
Dp |
Slip |
Stk |
Dp |
Slip |
| 89 | 246 | 0 | 338 |
1 | 68 | 68 | 45 | 89 | 249 |
45 | 91 | NEIC | | 83 | 342 | 7 | 170 |
1 | 80 | 79 | 52 | 89 | 261 |
38 | 91 | HARVARD | |
| NEIC - National Earthquakes Information Center of US Geological Service |
| HARVARD - Harvard Geophysical Center (USA) |
Figure 4 | 
Figure 5 |
|
