Information message about sensitive earthquake registered on July 4, 2007 in the region of Baikal Lake |
| The sensitive earthquake with M=5.2 has occurred on July 4, 2007 at 01:23 GMT (05:23 Moscow time) in the region of Baikal Lake. |
| 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 1 ÷ 20 min after
registration to the Ministry of Emergency of the Russian Federation (EMERCOM). |
| Preliminary processing has been done with data from 35 stations, accurate processing - with data 53 stations. |
| Fig. 1 presents fragments of three component records obtained from digital station Talaya (∆ 5.6º). Fig. 2 presents fragments of records obtained from digital stations Yakutsk (∆ 11.9º), Tiksi (∆ 17.9º), Kurchatov (∆ 19.5º), Yuzhno-Sakhalinsk (∆ 21.9º), Borovoe (∆ 23.2º), Bilibino (∆ 28.1º). |
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 |
01-23-22.5 |
55.62 |
110.28 |
10 |
53 |
5.2/20 | 5.5/20 | 7-7.5 | 40 | IPC GS RAS (Accurate) | | 2 |
01-23-22.4 |
55.63 |
110.23 |
10 |
35 |
5.2/11 | 5.6/13 | 7-7.5 | 58 | IPC GS RAS (Preliminary) | | 3 |
01-23-21.6 |
55.58 |
110.16 |
2 |
338 |
| 5.3 | | 42 | CSEM | | 4 |
01-23-24.4 |
55.47 |
110.29 |
10 |
170 |
5.3Mw | 5.2/122 | | 36 | NEIC | | 5 |
01-23-24.0 |
55.42 |
110.42 |
10 |
14 |
14.1K | | | | BB SD GS RAS | |
| 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 |
| BB SD GS RAS - Baikal Branch of Siberian Division of GS RAS |
| Epicenter |
| Epicenter of this earthquake was located in North Baikal region of Buriat Autonomous Area in 60 km to the east from Sevebaikalsk town and 450 km to the north-west from Chita city. |
| Aftershock |
| Within the next day after the main shock GS RAS has registered 9 aftershocks with М>=3.8. More detailed information about aftershocks may be found at the link located at the sight of
Baikal division of Geophysical Survey of Siberian Branch of RAS
|
| 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 |
| 20072509 | 2007-07-04 02:18:02.0 | 55.39 | 110.42 | 10 | 26 | - | 4.8/ 6 | 4.5-5 | Lake Baykal region, Russia | | 20072512 | 2007-07-04 04:09:39.0 | 55.37 | 110.44 | 10 | 10 | - | 4.2/ 3 | 3.5 | Lake Baykal region, Russia | | 20072514 | 2007-07-04 07:24:55.0 | 55.43 | 110.31 | 10 | 11 | 3.9/ 1 | 4.0/ 1 | 5-5.5 | Lake Baykal region, Russia | | 20072516 | 2007-07-04 08:59:55.0 | 55.46 | 110.32 | 10 | 11 | 4.0/ 1 | 4.3/ 3 | 5.5 | Lake Baykal region, Russia | | 20072517 | 2007-07-04 09:42:48.0 | 55.43 | 110.39 | 10 | 15 | 4.2/ 1 | 4.3/ 3 | 5.5-6 | Lake Baykal region, Russia | | 20072519 | 2007-07-04 11:17:18.0 | 55.43 | 110.54 | 10 | 10 | - | 4.1/ 3 | 3-3.5 | Lake Baykal region, Russia | | 20072524 | 2007-07-04 19:52:42.0 | 55.35 | 110.65 | 10 | 11 | - | 4.2/ 3 | 3.5 | Lake Baykal region, Russia | | 20072527 | 2007-07-05 00:20:13.0 | 55.44 | 110.3 | 10 | 12 | 4.0/ 1 | 4.2/ 3 | 5.5 | Lake Baykal region, Russia | | 20072528 | 2007-07-05 01:02:33.0 | 56.43 | 110.1 | 10 | 6 | - | 3.8/ 2 | 2.5-3 | Lake Baykal region, Russia | |
| Macroseismic manifestations |
| This earthquake has been felt in the towns Severobaikalsk with intensity 4-5 MSK, Nizhneangarsk 3-4 MSK, Ulyunkhan, Uoyan, Ust-Barguzin 3 MSK, Kichera, Verhnaya Zaimka 2-3 MSK. |
