Earthquake with magnitude of Md 2.5 on date 28-03-1987 and time 00:24:31 (Italy) in region 5 km NW Coriano (RN)

A magnitude Md 2.5 earthquake occured in region: 5 km NW Coriano (RN), on

  • 27-03-1987 23:24:31 (UTC)
  • 28-03-1987 00:24:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9930, 12.5610 at 19 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
Coriano RN 5 10502 10502
Rimini RN 8 147750 158252
Riccione RN 8 34965 193217
Montescudo - Monte Colombo RN 8 6779 199996
San Clemente RN 9 5577 205573
Gemmano RN 10 1158 206731
Misano Adriatico RN 11 13014 219745
Verucchio RN 11 10078 229823
Morciano di Romagna RN 11 7045 236868
Sassofeltrio PU 12 1388 238256
Montefiore Conca RN 12 2269 240525
Santarcangelo di Romagna RN 12 22089 262614
San Giovanni in Marignano RN 14 9417 272031
Poggio Torriana RN 14 5135 277166
Mercatino Conca PU 15 1086 278252
Cattolica RN 15 17125 295377
Monte Grimano Terme PU 16 1136 296513
Saludecio RN 16 3120 299633
Gabicce Mare PU 16 5781 305414
Tavoleto PU 16 867 306281
Borghi FC 17 2843 309124
Savignano sul Rubicone FC 17 17766 326890
San Mauro Pascoli FC 17 11690 338580
Mondaino RN 18 1394 339974
Montegridolfo RN 18 1012 340986
Gradara PU 18 4835 345821
Tavullia PU 19 8003 353824
Auditore PU 19 1566 355390
Bellaria-Igea Marina RN 19 19519 374909
Gatteo FC 19 9068 383977

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km S of Rimini (147750 inhabitants)
30 Km W of Pesaro (94582 inhabitants)
30 Km SE of Cesena (96758 inhabitants)
40 Km W of Fano (60888 inhabitants)
49 Km SE of Forlì (117913 inhabitants)
55 Km SE of Ravenna (159116 inhabitants)
63 Km SE of Faenza (58541 inhabitants)
79 Km SE of Imola (69797 inhabitants)
80 Km NE of Arezzo (99543 inhabitants)
88 Km W of Ancona (100861 inhabitants)
99 Km N of Perugia (166134 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 2.5 1987-03-27
23:24:31
43.993 12.561 19 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 43669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-03-27 23:24:31 ± 0.432
Latitude 43.9930 ± 0.0248
Longitude 12.5610 ± 0.0316
Depth (km) 19 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 43669

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) 3737.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00461
Epicentral distance of station farthest from the epicenter (degree) 0.01935
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 43669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:43:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CTI.Z. 1987-03-27T23:25:30.00 10.0 undecidable manual SN 342 2.1423 -1.02 0.3
--.CTI.Z. 1987-03-27T23:25:05.83 10.0 undecidable manual PN 342 2.1423 0.13 1.3
--.CM8.Z. 1987-03-27T23:25:02.42 10.0 undecidable manual SN 151 0.8991 1.13 0.4
--.AM8.Z. 1987-03-27T23:25:02.12 10.0 undecidable manual SN 119 0.8658 1.55 0.2
--.ASS.Z. 1987-03-27T23:25:02.00 10.0 undecidable manual SN 175 0.9213 -0.01 0.9
--.CRE.Z. 1987-03-27T23:24:52.30 10.0 undecidable manual SG 229 0.5772 0.52 0.7
--.MF9.Z. 1987-03-27T23:24:51.00 10.0 undecidable manual SG 256 0.5106 1.23 0.3
--.ARV.Z. 1987-03-27T23:24:50.90 10.0 undecidable manual SG 150 0.555 -0.5 0.8
--.AM8.Z. 1987-03-27T23:24:49.35 10.0 undecidable manual PN 119 0.8658 1.23 0.8
--.ASS.Z. 1987-03-27T23:24:47.50 10.0 undecidable manual PN 175 0.9213 -1.45 0.5
--.CM8.Z. 1987-03-27T23:24:47.67 10.0 undecidable manual PN 151 0.8991 -0.86 1.3
--.CRE.Z. 1987-03-27T23:24:43.00 10.0 undecidable manual PG 229 0.5772 -0.04 2.2
--.MF9.Z. 1987-03-27T23:24:42.00 10.0 undecidable manual PG 256 0.5106 0.13 2.2
--.ARV.Z. 1987-03-27T23:24:42.50 10.0 undecidable manual PG 150 0.555 -0.32 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download