104 km E of Gorgān, Iran / pop: 244,000 / local time: 19:24:58.6 2023-01-21
55 km ENE of Shahrud, Iran / pop: 131,000 / local time: 19:24:58.6 2023-01-21
For more information on computation, see the article Bossu et al., 2016:
Thumbnail Based Questionnaires for the Rapid and Efficient Collection of Macroseismic Data from Global Earthquakes, Rémy Bossu, Matthieu Landès, Fréderic Roussel, Robert Steed, Gilles Mazet-Roux, Stacey S. Martin, and Susan Hough. Seismological Research Letter. Oct 2016. doi: 10.1785/0220160120;
Furthermore, to avoid the association with wrong events, we filter testimonies in distance and in intensity depending on the magnitude of the seismic event.
References for tectonic plate boundaries:
Coffin, M.F., Gahagan, L.M., and Lawver, L.A., 1998, Present-day Plate Boundary Digital Data Compilation. University of Texas Institute for Geophysics Technical Report No. 174, pp. 5.
Maps view: Seismicity from the previous 7 days in the area .
Regional instrumental seismicity
This seismicity maps have been generated by concatenating the ISC catalogue (since 1964), the EMSC Euro-Med Bulletin catalogue and the EMSC Real Time catalogue. Therefore, they show the seismicity from 1964 until the earthquake occurrence.
Regional deadly earthquakes from 1500 to origin time
Date
Long.
Lat.
Mag.
Death
Location
1436-00-00
55.3
37.2
5.3
50
TURKMENISTAN-IRAN BORDER REGION
1498-00-00
55.1
37.2
6.5
1000
TURKMENISTAN-IRAN BORDER REGION
1667-11-18
57.5
37.2
6.9
12000
TURKMENISTAN-IRAN BORDER REGION
1695-05-11
57.5
37.1
7.0
360
TURKMENISTAN-IRAN BORDER REGION
1823-09-07
53.3
36.3
?
many
NORTHERN IRAN
1879-04-02
57.4
37.5
6.7
700
TURKMENISTAN-IRAN BORDER REGION
1890-07-11
54.6
36.6
7.2
100s
NORTHERN IRAN
1923-09-17
57.5
37.9
6.4
157
TURKMENISTAN-IRAN BORDER REGION
1929-05-01
57.8
37.8
7.2
3257
TURKMENISTAN-IRAN BORDER REGION
1935-04-11
53.6
36.5
6.4
500
NORTHERN IRAN
1953-02-12
55.0
35.4
6.3
973
NORTHERN IRAN
1969-01-03
57.8
37.2
5.4
50
TURKMENISTAN-IRAN BORDER REGION
1970-07-30
55.9
37.9
6.7
220
TURKMENISTAN-IRAN BORDER REGION
1997-02-04
57.3
37.7
6.8
100
TURKMENISTAN-IRAN BORDER REGION
2010-08-27
54.5
35.5
5.7
3
NORTHERN IRAN
2017-05-13
57.3
37.7
5.6
3
NORTHEASTERN IRAN
Source:
From 1500 to 1999: T. Utsu ; International Handbook of Earthquake and Engineering Seismology; vol. A; 691-718
Testimonies, photos
Institute of Geophysics, University of Tehran Tehran, Iran
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