Earthquake with magnitude of Md 2.7 on date 07-12-1985 and time 15:10:21 (Italy) in region 2 km SE Lanuvio (RM)

A magnitude Md 2.7 earthquake occured in region: 2 km SE Lanuvio (RM), on

  • 07-12-1985 14:10:21 (UTC)
  • 07-12-1985 15:10:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.66, 12.71 at 5 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 2 13632 13632
Genzano di Roma RM 6 23970 37602
Velletri RM 6 53303 90905
Nemi RM 7 1943 92848
Ariccia RM 8 19407 112255
Albano Laziale RM 9 41715 153970
Aprilia LT 9 73446 227416
Castel Gandolfo RM 11 8997 236413
Rocca di Papa RM 11 17034 253447
Cisterna di Latina LT 12 36868 290315
Lariano RM 13 13432 303747
Marino RM 13 43026 346773
Grottaferrata RM 15 20327 367100
Ardea RM 15 49183 416283
Rocca Priora RM 16 11962 428245
Frascati RM 16 22087 450332
Monte Compatri RM 17 11978 462310
Cori LT 17 11065 473375
Monte Porzio Catone RM 17 8693 482068
Rocca Massima LT 17 1136 483204
Pomezia RM 18 62966 546170
Ciampino RM 18 38412 584582
Artena RM 19 14276 598858
San Cesareo RM 19 15153 614011
Colonna RM 20 4287 618298

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km W of Velletri (53303 inhabitants)
9 Km NE of Aprilia (73446 inhabitants)
18 Km E of Pomezia (62966 inhabitants)
25 Km N of Anzio (54211 inhabitants)
27 Km NW of Latina (125985 inhabitants)
32 Km SE of Roma (2864731 inhabitants)
35 Km S of Tivoli (56533 inhabitants)
38 Km S of Guidonia Montecelio (88673 inhabitants)
41 Km E of Fiumicino (78395 inhabitants)
90 Km SE of Civitavecchia (52991 inhabitants)
96 Km SW of L'Aquila (69753 inhabitants)
98 Km SE of Viterbo (67173 inhabitants)
100 Km S of Terni (111501 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 2.7 1985-12-07
14:10:21
41.66 12.71 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 17509
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-07 14:10:21 ± 0.493
Latitude 41.66 ± 0.02
Longitude 12.71 ± 0.02
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 17509

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) 3108.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 268
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.01255
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 17509
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ASS.Z. 1985-12-07T14:11:07.00 10.0 undecidable manual SN 358 0.0125 -0.07 0.6
--.AQU.Z. 1985-12-07T14:10:52.50 10.0 undecidable manual SG 36 0.0077 0.07 0.8
--.SD1.Z. 1985-12-07T14:10:51.00 10.0 undecidable manual SG 86 0.0074 -0.13 1.2
--.ASS.Z. 1985-12-07T14:10:48.00 10.0 undecidable manual PN 358 0.0125 -0.01 1.5
--.MNS.Z. 1985-12-07T14:10:47.60 10.0 undecidable manual SG 358 0.0065 -0.43 0.9
--.DUI.Z. 1985-12-07T14:10:47.50 10.0 undecidable manual PN 89 0.0117 0.84 0.4
--.AQU.Z. 1985-12-07T14:10:40.00 10.0 undecidable manual PG 36 0.0077 0.44 1.4
--.SD1.Z. 1985-12-07T14:10:38.00 10.0 undecidable manual PG 86 0.0074 -0.81 0.6
--.MNS.Z. 1985-12-07T14:10:37.00 10.0 undecidable manual PG 358 0.0065 -0.02 2.1
--.RDP.Z. 1985-12-07T14:10:27.00 10.0 undecidable manual SG 1 0.0008 0.86 0.2
--.RDP.Z. 1985-12-07T14:10:23.80 10.0 undecidable manual PG 1 0.0008 -0.58 1.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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