Earthquake with magnitude of Md 2.2 on date 18-04-1989 and time 22:20:41 (Italy) in region 5 km SE Serravalle di Chienti (MC)

A magnitude Md 2.2 earthquake occured in region: 5 km SE Serravalle di Chienti (MC), on

  • 18-04-1989 20:20:41 (UTC)
  • 18-04-1989 22:20:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0400, 12.9920 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Serravalle di Chienti MC 5 1070 1070
Pieve Torina MC 5 1458 2528
Monte Cavallo MC 5 145 2673
Muccia MC 6 915 3588
Pievebovigliana MC 8 866 4454
Fiordimonte MC 8 202 4656
Sefro MC 12 422 5078
Camerino MC 12 6974 12052
Fiastra MC 13 559 12611
Visso MC 14 1107 13718
Acquacanina MC 15 121 13839
Pioraco MC 16 1134 14973
Ussita MC 16 444 15417
Fiuminata MC 17 1402 16819
Sellano PG 18 1079 17898
Preci PG 18 724 18622
Nocera Umbra PG 18 5839 24461
Valtopina PG 19 1398 25859
Bolognola MC 20 142 26001
Castelraimondo MC 20 4587 30588

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
60 Km NE of Terni (111501 inhabitants)
72 Km NW of Teramo (54892 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
97 Km S of Pesaro (94582 inhabitants)
100 Km NE of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.2
ML-VAX 1.8
1989-04-18
20:20:41
43.04 12.992 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 90109
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-04-18 20:20:41 ± 0.087
Latitude 43.0400 ± 0.0063
Longitude 12.9920 ± 0.0058
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 90109

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 842.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 153
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00154
Epicentral distance of station farthest from the epicenter (degree) 0.00437
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 90109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:24:32

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 90109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ALP.Z. 1989-04-18T20:20:59.40 10.0 undecidable manual SG 121 0.4884 0.52 0
--.ARV.Z. 1989-04-18T20:20:58.60 10.0 undecidable manual SG 355 0.4551 0.27 0.2
--.ALP.Z. 1989-04-18T20:20:51.20 10.0 undecidable manual PG 121 0.4884 -0.16 0.9
--.ASS.Z. 1989-04-18T20:20:51.60 10.0 undecidable manual SG 275 0.2442 0.05 0.6
--.ARV.Z. 1989-04-18T20:20:50.57 10.0 undecidable manual PG 355 0.4551 -0.16 0.9
--.CM8.Z. 1989-04-18T20:20:49.30 10.0 undecidable manual SG 35 0.1887 0.17 0.6
--.SS8.Z. 1989-04-18T20:20:48.50 10.0 undecidable manual SG 100 0.1665 -0.2 0.5
--.ASS.Z. 1989-04-18T20:20:46.86 10.0 undecidable manual PG 275 0.2442 0.04 1.6
--.CM8.Z. 1989-04-18T20:20:45.70 10.0 undecidable manual PG 35 0.1887 -0.03 3.2
--.SS8.Z. 1989-04-18T20:20:45.40 10.0 undecidable manual PG 100 0.1665 -0.09 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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