Earthquake with magnitude of Md 3.0 on date 15-09-1987 and time 11:56:13 (Italy) in region 2 km SW Fiastra (MC)

A magnitude Md 3.0 earthquake occured in region: 2 km SW Fiastra (MC), on

  • 15-09-1987 09:56:13 (UTC)
  • 15-09-1987 11:56:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.02, 13.15 at 7 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
Fiastra MC 2 559 559
Acquacanina MC 2 121 680
Fiordimonte MC 5 202 882
Bolognola MC 7 142 1024
Pievebovigliana MC 7 866 1890
Pieve Torina MC 9 1458 3348
Ussita MC 9 444 3792
Muccia MC 11 915 4707
Visso MC 11 1107 5814
Sarnano MC 12 3264 9078
Monte Cavallo MC 13 145 9223
Cessapalombo MC 13 512 9735
Castelsantangelo sul Nera MC 14 281 10016
Camerino MC 14 6974 16990
Caldarola MC 14 1823 18813
Camporotondo di Fiastrone MC 15 563 19376
Gualdo MC 16 815 20191
San Ginesio MC 17 3498 23689
Serravalle di Chienti MC 17 1070 24759
Belforte del Chienti MC 17 1886 26645
Amandola FM 17 3629 30274
Serrapetrona MC 18 966 31240
Montefortino FM 18 1178 32418
Preci PG 18 724 33142
Montemonaco AP 20 604 33746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
61 Km NW of Teramo (54892 inhabitants)
63 Km E of Perugia (166134 inhabitants)
66 Km NE of Terni (111501 inhabitants)
73 Km SW of Ancona (100861 inhabitants)
77 Km N of L'Aquila (69753 inhabitants)
92 Km S of Fano (60888 inhabitants)
99 Km NW of Montesilvano (53738 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
Rev 1000 Md 3.0 1987-09-15
09:56:13
43.02 13.15 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 55299
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-09-15 09:56:13 ± 0.285
Latitude 43.02 ± 0.01
Longitude 13.15 ± 0.02
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 55299

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) 2121.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00154
Epicentral distance of station farthest from the epicenter (degree) 0.01902
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 8
Type of magnitude Md
Reference to an origin 55299
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:53:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CP9.Z. 1987-09-15T09:56:54.00 10.0 undecidable manual SN 187 0.0105 1.66 0
--.BDI.Z. 1987-09-15T09:56:49.00 10.0 undecidable manual PN 300 0.019 0.1 0.8
--.DUI.Z. 1987-09-15T09:56:45.50 10.0 undecidable manual PN! 144 0.015 2.8 0
--.MNS.Z. 1987-09-15T09:56:40.00 10.0 undecidable manual SG 208 0.0065 0.99 0.2
--.SDI.Z. 1987-09-15T09:56:40.00 10.0 undecidable manual PN 159 0.0125 1.01 0.3
--.PGD.Z. 1987-09-15T09:56:38.50 10.0 undecidable manual PN 309 0.0121 0.3 0.9
--.AQU.Z. 1987-09-15T09:56:38.50 10.0 undecidable manual SG 164 0.0062 0.52 0.4
--.AM8.Z. 1987-09-15T09:56:36.64 10.0 undecidable manual SG 31 0.0055 1.04 0.2
--.CP9.Z. 1987-09-15T09:56:35.50 10.0 undecidable manual PN 187 0.0105 -0.32 1
--.CRE.Z. 1987-09-15T09:56:35.00 10.0 undecidable manual PG 304 0.0095 0.72 1.3
--.ARV.Z. 1987-09-15T09:56:31.50 10.0 undecidable manual SG 342 0.0045 -0.25 0.8
--.MNS.Z. 1987-09-15T09:56:28.50 10.0 undecidable manual PG 208 0.0065 0.38 1.2
--.ALP.Z. 1987-09-15T09:56:27.63 10.0 undecidable manual SG 128 0.0035 -0.59 0.6
--.AQU.Z. 1987-09-15T09:56:27.50 10.0 undecidable manual PG 164 0.0062 -0.04 1.4
--.MC8.Z. 1987-09-15T09:56:27.48 10.0 undecidable manual SG 35 0.003 1.13 0.2
--.ASS.Z. 1987-09-15T09:56:26.00 10.0 undecidable manual SG 276 0.0032 -1.49 0.1
--.AM8.Z. 1987-09-15T09:56:25.55 10.0 negative manual PG 31 0.0055 -0.61 1.9
--.ARV.Z. 1987-09-15T09:56:23.50 10.0 undecidable manual PG 342 0.0045 -0.43 2.3
--.ASS.Z. 1987-09-15T09:56:21.00 10.0 undecidable manual PG 276 0.0032 -0.48 2.2
--.CM8.Z. 1987-09-15T09:56:21.23 10.0 undecidable manual SG 358 0.0015 0.9 0.3
--.ALP.Z. 1987-09-15T09:56:21.40 10.0 positive manual PG 128 0.0035 -0.86 1.2
--.MC8.Z. 1987-09-15T09:56:20.70 10.0 negative manual PG 35 0.003 -0.12 2.8
--.CM8.Z. 1987-09-15T09:56:17.48 10.0 undecidable manual PG 358 0.0015 0.14 2.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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