Earthquake with magnitude of ML 1.0 on date 27-03-2009 and time 00:51:19 (UTC) in region 3 km W Castel Gandolfo (RM)

A magnitude ML 1.0 earthquake occured in region: 3 km W Castel Gandolfo (RM), on

  • 27-03-2009 00:51:19 (UTC)
  • 27-03-2009 01:51:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7380, 12.6190 at 0 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
Castel Gandolfo RM 3 8997 8997
Albano Laziale RM 4 41715 50712
Ariccia RM 5 19407 70119
Marino RM 5 43026 113145
Genzano di Roma RM 7 23970 137115
Grottaferrata RM 7 20327 157442
Ciampino RM 7 38412 195854
Rocca di Papa RM 8 17034 212888
Nemi RM 8 1943 214831
Frascati RM 9 22087 236918
Lanuvio RM 10 13632 250550
Monte Porzio Catone RM 12 8693 259243
Pomezia RM 12 62966 322209
Monte Compatri RM 13 11978 334187
Rocca Priora RM 14 11962 346149
Velletri RM 14 53303 399452
Ardea RM 15 49183 448635
Colonna RM 16 4287 452922
Aprilia LT 16 73446 526368
Lariano RM 18 13432 539800
San Cesareo RM 18 15153 554953

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km NE of Pomezia (62966 inhabitants)
14 Km W of Velletri (53303 inhabitants)
16 Km N of Aprilia (73446 inhabitants)
21 Km SE of Roma (2864731 inhabitants)
29 Km SW of Tivoli (56533 inhabitants)
31 Km S of Guidonia Montecelio (88673 inhabitants)
32 Km E of Fiumicino (78395 inhabitants)
32 Km N of Anzio (54211 inhabitants)
38 Km NW of Latina (125985 inhabitants)
79 Km SE of Civitavecchia (52991 inhabitants)
87 Km SE of Viterbo (67173 inhabitants)
92 Km S of Terni (111501 inhabitants)
94 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 1.4
ML 1.0
2009-03-27
00:51:19
41.738 12.619 0 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 752299
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-03-27 00:51:19 ± 0.16
Latitude 41.7380 ± 0.0045
Longitude 12.6190 ± 0.0072
Depth (km) 0 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 752299

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 683
Semi-minor axis of confidence ellipse (meter) 579
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 781.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 326
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.09533
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 752299
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:13:28

Md:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 752299
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:13:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RMP.HHZ. 2009-03-27T00:51:22.77 0.1 undecidable manual Sg 41 10.5783 0.056 99
IV.RMP.HHZ. 2009-03-27T00:51:21.14 0.1 undecidable manual Pg 41 10.5783 -0.017 100
IV.RDP.BHZ. 2009-03-27T00:51:21.90 0.1 undecidable manual Sg 75 8.3805 -0.045 100
IV.RDP.BHZ. 2009-03-27T00:51:20.80 0.1 undecidable manual Pg 75 8.3805 0.087 99
IV.MA9.HHZ. 2009-03-27T00:51:20.71 0.3 undecidable manual Sg 44 4.8951 -0.011 76
IV.MA9.HHZ. 2009-03-27T00:51:19.91 0.3 undecidable manual Pg 44 4.8951 -0.096 75
IV.LAV9.SHZ. 2009-03-27T00:51:11.43 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