Earthquake with magnitude of Md 2.3 on date 19-04-1987 and time 16:56:26 (Italy) in region 4 km W Muccia (MC)

A magnitude Md 2.3 earthquake occured in region: 4 km W Muccia (MC), on

  • 19-04-1987 14:56:26 (UTC)
  • 19-04-1987 16:56:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0870, 13.0010 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
Muccia MC 4 915 915
Serravalle di Chienti MC 4 1070 1985
Pieve Torina MC 6 1458 3443
Pievebovigliana MC 7 866 4309
Camerino MC 8 6974 11283
Sefro MC 8 422 11705
Fiordimonte MC 9 202 11907
Monte Cavallo MC 10 145 12052
Pioraco MC 10 1134 13186
Fiuminata MC 13 1402 14588
Fiastra MC 14 559 15147
Castelraimondo MC 15 4587 19734
Acquacanina MC 16 121 19855
Nocera Umbra PG 17 5839 25694
Gagliole MC 18 620 26314
Serrapetrona MC 18 966 27280
Visso MC 19 1107 28387
Esanatoglia MC 19 2034 30421
Matelica MC 19 9981 40402
Caldarola MC 19 1823 42225
Ussita MC 19 444 42669

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NE of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
65 Km NE of Terni (111501 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
84 Km S of Fano (60888 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
92 Km S of Pesaro (94582 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 2.3 1987-04-19
14:56:26
43.087 13.001 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 45259
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-04-19 14:56:26 ± 0.424
Latitude 43.0870 ± 0.0258
Longitude 13.0010 ± 0.0227
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 45259

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) 3406.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 220
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.00567
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 45259
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:44:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.AM8.Z. 1987-04-19T14:56:48.83 10.0 undecidable manual SG 43 0.6327 0.27 0.5
--.ARV.Z. 1987-04-19T14:56:41.50 10.0 undecidable manual SG 354 0.4107 0.05 1.1
--.AM8.Z. 1987-04-19T14:56:39.20 10.0 undecidable manual PG 43 0.6327 -0.11 1.4
--.ASS.Z. 1987-04-19T14:56:37.00 10.0 undecidable manual SG 264 0.2553 0.64 0.7
--.ARV.Z. 1987-04-19T14:56:35.00 10.0 undecidable manual PG 354 0.4107 -0.02 1.8
--.PRG.Z. 1987-04-19T14:56:34.00 10.0 undecidable manual PG 272 0.444 -1.52 0.2
--.CM8.Z. 1987-04-19T14:56:33.60 10.0 undecidable manual SG 44 0.1443 0.08 0.7
--.ASS.Z. 1987-04-19T14:56:33.00 10.0 undecidable manual PG 264 0.2553 0.91 0.8
--.CM8.Z. 1987-04-19T14:56:30.22 10.0 undecidable manual PG 44 0.1443 0.09 1.9
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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