Information message about the earthquake in Dagestan on November 15, 2001 |
| On November 15, 2001 sensitive earthquake has happened in Dagestan. It occurred at 12:42 Moscow time (09:42 GMT) and had magnitude 3.8 and intensity in in living sites up to 4-5MSK. |
| 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 58 min after
registration to the Ministry of Emergency of the Russian Federation (EMERCOM). |
| Preliminary summary processing for this event has been done with data from 7 stations, accurate processing – with data from 14 stations. Besides that the processing with use of local velocity cross section of the earth crust has been done with data of Northern Caucasus local stations, including data from local networks of Dagestan and region of Caucasus Mineral Waters. |
| Figure 1 presents fragments of records received by IPC from digital stations in a near to real time mode. |
Figure 1
|
|
| 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 |
09-42-17.80 |
43 |
47 |
10 |
7 |
3.80/3 | 4.20/3 | 5-5.5 | | IPC GS RAS (accurate) | | 2 |
09-43-17.4 |
43 |
47 |
12 |
|
| | | | IPC GS RAS (From data regional stations Northern Caucasus) | | 3 |
09-42-18.3 |
43 |
46 |
10 |
14 |
3.8/3 | 4.2/3 | 5-5.5 | | IPC GS RAS (From data regional stations Northen Caucasus) | | 4 |
09-42-21.2 |
42 |
46 |
14 |
4 |
4.7/4 | | | | DRIPC | |
| IPC GS RAS - Informational Processing Center, Geophysical Survey, Russian Academy of Sciences |
| DRIPC - Regional Informational Processing Center of Dagestan Experimental-Methodical Seismological Department Geophysical Survey Russian Academy of Sciences |
| Macroseismic manifestations |
| This earthquake has happened on Dagestan territory in 40 km to the North-West from Mahachkala. It was felt in towns Mahachkala, Buinaksk - intensity 4-5 MSK, Kspiysk - 4 MSK, settlements Izberbash, Hasaviurt, Kizilurt –2-3 MSK.
|
| Historical records |
| Hypocenter of this earthquake was located in the region of Eastern Caucasus on the territory of Dagestan in seismic active region.
This is origin zone of the strong earthquake on January 31, 1999 (43.11 N, 46.99 E) with magnitude Ms=5.6 and sensitivity in hypocenter 6-7 MSK. Aftershock process in this origin place continues right now. Analysis of seismic conditions in this zone for the period 1999 - 2001 was presented in a few Information messages 1, 2, 3, 4, 5.
|
