Earthquake with magnitude of Md 2.4 on date 05-01-1987 and time 11:34:02 (UTC) in region 3 km SW Lanuvio (RM)

A magnitude Md 2.4 earthquake occured in region: 3 km SW Lanuvio (RM), on

  • 05-01-1987 11:34:02 (UTC)
  • 05-01-1987 12:34:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6580, 12.6830 at 6 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
Lanuvio RM 3 13632 13632
Genzano di Roma RM 6 23970 37602
Ariccia RM 7 19407 57009
Nemi RM 8 1943 58952
Aprilia LT 8 73446 132398
Albano Laziale RM 8 41715 174113
Velletri RM 9 53303 227416
Castel Gandolfo RM 10 8997 236413
Rocca di Papa RM 12 17034 253447
Ardea RM 13 49183 302630
Marino RM 13 43026 345656
Cisterna di Latina LT 14 36868 382524
Grottaferrata RM 15 20327 402851
Lariano RM 15 13432 416283
Pomezia RM 15 62966 479249
Frascati RM 17 22087 501336
Rocca Priora RM 17 11962 513298
Monte Compatri RM 17 11978 525276
Ciampino RM 18 38412 563688
Monte Porzio Catone RM 18 8693 572381
Cori LT 19 11065 583446
Rocca Massima LT 20 1136 584582

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km NE of Aprilia (73446 inhabitants)
9 Km W of Velletri (53303 inhabitants)
15 Km E of Pomezia (62966 inhabitants)
24 Km N of Anzio (54211 inhabitants)
28 Km NW of Latina (125985 inhabitants)
31 Km SE of Roma (2864731 inhabitants)
35 Km S of Tivoli (56533 inhabitants)
38 Km S of Guidonia Montecelio (88673 inhabitants)
39 Km E of Fiumicino (78395 inhabitants)
88 Km SE of Civitavecchia (52991 inhabitants)
97 Km SE of Viterbo (67173 inhabitants)
97 Km SW of L'Aquila (69753 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 2.4 1987-01-05
11:34:02
41.658 12.683 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 38889
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-01-05 11:34:02 ± 2.233
Latitude 41.6580 ± 0.1166
Longitude 12.6830 ± 0.1015
Depth (km) 6 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 38889

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) 15470.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 321
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.01263
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 38889
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:38:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ASS.Z. 1987-01-05T11:34:49.00 10.0 undecidable manual SN 359 1.3986 1.18 0.2
--.AQU.Z. 1987-01-05T11:34:32.50 10.0 undecidable manual SG 37 0.8769 -1.2 0.3
--.ASS.Z. 1987-01-05T11:34:28.00 10.0 undecidable manual PN 359 1.3986 -0.82 1
--.AQU.Z. 1987-01-05T11:34:21.50 10.0 undecidable manual PG 37 0.8769 0.83 1.3
--.RMP.Z. 1987-01-05T11:34:06.50 10.0 undecidable manual PG 5 0.1554 0 2.2
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