Earthquake with magnitude of Md 2.0 on date 19-08-1987 and time 02:17:14 (Italy) in region 4 km SE Fiordimonte (MC)

A magnitude Md 2.0 earthquake occured in region: 4 km SE Fiordimonte (MC), on

  • 19-08-1987 00:17:14 (UTC)
  • 19-08-1987 02:17:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.01, 13.12 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
Fiordimonte MC 4 202 202
Fiastra MC 4 559 761
Acquacanina MC 5 121 882
Pievebovigliana MC 6 866 1748
Pieve Torina MC 7 1458 3206
Ussita MC 8 444 3650
Bolognola MC 9 142 3792
Visso MC 10 1107 4899
Muccia MC 10 915 5814
Monte Cavallo MC 10 145 5959
Castelsantangelo sul Nera MC 14 281 6240
Camerino MC 14 6974 13214
Sarnano MC 15 3264 16478
Serravalle di Chienti MC 15 1070 17548
Cessapalombo MC 16 512 18060
Preci PG 16 724 18784
Caldarola MC 16 1823 20607
Camporotondo di Fiastrone MC 18 563 21170
Gualdo MC 19 815 21985
Serrapetrona MC 19 966 22951
San Ginesio MC 19 3498 26449
Belforte del Chienti MC 19 1886 28335
Amandola FM 20 3629 31964
Montefortino FM 20 1178 33142

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
60 Km E of Perugia (166134 inhabitants)
62 Km NW of Teramo (54892 inhabitants)
63 Km NE of Terni (111501 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 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 2.0
ML-VAX 1.7
1987-08-19
00:17:14
43.01 13.12 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 54189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-08-19 00:17:14 ± 0.333
Latitude 43.01 ± 0.02
Longitude 13.12 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 54189

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) 2316.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 272
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00445
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 54189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:52:15

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 54189
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 Takeoff_angle Residual Weight
--.ARV.Z. 1987-08-19T00:17:32.19 10.0 undecidable manual SG 345 0.0045 0.17 0.4
--.ASS.Z. 1987-08-19T00:17:26.98 10.0 undecidable manual SG 278 0.0031 -0.04 0.6
--.ARV.Z. 1987-08-19T00:17:24.76 10.0 undecidable manual PG 345 0.0045 0.35 0.3
--.ASS.Z. 1987-08-19T00:17:21.37 10.0 undecidable manual PG 278 0.0031 -0.15 1.3
--.CM8.Z. 1987-08-19T00:17:21.37 10.0 undecidable manual SG 5 0.0016 -0.38 0.2
--.CM8.Z. 1987-08-19T00:17:18.46 10.0 undecidable manual PG 5 0.0016 -0.02 3.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download