Earthquake with magnitude of ML 1.0 on date 31-05-2009 and time 02:06:54 (UTC) in region 2 km W Lanuvio (RM)

A magnitude ML 1.0 earthquake occured in region: 2 km W Lanuvio (RM), on

  • 31-05-2009 02:06:54 (UTC)
  • 31-05-2009 04:06:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6870, 12.6780 at 11 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 3 23970 37602
Ariccia RM 4 19407 57009
Nemi RM 5 1943 58952
Albano Laziale RM 5 41715 100667
Castel Gandolfo RM 7 8997 109664
Velletri RM 8 53303 162967
Rocca di Papa RM 9 17034 180001
Marino RM 9 43026 223027
Aprilia LT 11 73446 296473
Grottaferrata RM 11 20327 316800
Frascati RM 13 22087 338887
Lariano RM 14 13432 352319
Ardea RM 14 49183 401502
Rocca Priora RM 14 11962 413464
Ciampino RM 14 38412 451876
Monte Compatri RM 15 11978 463854
Pomezia RM 15 62966 526820
Monte Porzio Catone RM 15 8693 535513
Cisterna di Latina LT 16 36868 572381
Colonna RM 18 4287 576668
San Cesareo RM 18 15153 591821

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km W of Velletri (53303 inhabitants)
11 Km N of Aprilia (73446 inhabitants)
15 Km E of Pomezia (62966 inhabitants)
27 Km N of Anzio (54211 inhabitants)
28 Km SE of Roma (2864731 inhabitants)
31 Km NW of Latina (125985 inhabitants)
33 Km SW of Tivoli (56533 inhabitants)
35 Km S of Guidonia Montecelio (88673 inhabitants)
38 Km E of Fiumicino (78395 inhabitants)
86 Km SE of Civitavecchia (52991 inhabitants)
94 Km SE of Viterbo (67173 inhabitants)
95 Km SW of L'Aquila (69753 inhabitants)
97 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 1.7
ML 1.0
2009-05-31
02:06:54
41.687 12.678 11 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 883079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-05-31 02:06:54 ± 0.37
Latitude 41.6870 ± 0.0099
Longitude 12.6780 ± 0.0349
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 883079

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2884
Semi-minor axis of confidence ellipse (meter) 1094
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 3101.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 248
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.48563
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 883079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:46:47

Md:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 883079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:46:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GUAR.HHE. 2009-05-31T02:07:11.24 0.6 undecidable manual Sg 77 53.9016 0.244 46
.CERT.HHE. 2009-05-31T02:07:06.99 0.3 undecidable manual Sg 41 38.4282 0.112 72
IV.GUAR.HHE. 2009-05-31T02:07:03.64 0.3 undecidable manual Pg 77 53.9016 -0.24 68
.CERT.HHE. 2009-05-31T02:07:01.23 0.3 undecidable manual Pg 41 38.4282 -0.273 69
IV.RMP.HHN. 2009-05-31T02:07:00.20 0.3 undecidable manual Sg 8 13.9749 -0.136 75
IV.RMP.HHN. 2009-05-31T02:06:58.26 0.3 undecidable manual Pg 8 13.9749 0.534 69
IV.LAV9.SHZ. 2009-05-31T02:06:58.31 0.3 undecidable manual Sg 120 1.998 0.229 75
IV.RDP.HHZ. 2009-05-31T02:06:58.76 0.3 undecidable manual Sg 22 8.5803 -0.267 74
IV.RDP.HHZ. 2009-05-31T02:06:57.17 0.3 undecidable manual Pg 22 8.5803 0.2 75
IV.LAV9.SHZ. 2009-05-31T02:06:56.20 0.1 undecidable manual Pg 120 1.998 -0.224 100
NI.SABO.HHZ. 2009-05-31T02:06:42.02 10.0 undecidable manual Pg 0 0 0
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