Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 15-03-2010 and time 02:03:43 (Italy) in region 2 km NW Colonna (RM)

A magnitude ML 0.5 earthquake occured in region: 2 km NW Colonna (RM), on

  • 15-03-2010 01:03:43 (UTC)
  • 15-03-2010 02:03:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8550, 12.7430 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Colonna RM 2 4287 4287
Monte Porzio Catone RM 5 8693 12980
Monte Compatri RM 5 11978 24958
San Cesareo RM 6 15153 40111
Rocca Priora RM 7 11962 52073
Gallicano nel Lazio RM 7 6334 58407
Frascati RM 7 22087 80494
Zagarolo RM 7 17843 98337
Grottaferrata RM 10 20327 118664
Rocca di Papa RM 11 17034 135698
Marino RM 12 43026 178724
Palestrina RM 12 21672 200396
Castel San Pietro Romano RM 13 902 201298
Ciampino RM 13 38412 239710
San Gregorio da Sassola RM 13 1619 241329
Tivoli RM 13 56533 297862
Poli RM 13 2418 300280
Casape RM 13 744 301024
Labico RM 14 6379 307403
Castel Gandolfo RM 14 8997 316400
Nemi RM 15 1943 318343
Albano Laziale RM 16 41715 360058
Lariano RM 16 13432 373490
Ariccia RM 16 19407 392897
Cave RM 16 11287 404184
Guidonia Montecelio RM 16 88673 492857
Rocca di Cave RM 17 377 493234
Genzano di Roma RM 17 23970 517204
Valmontone RM 17 15959 533163
Castel Madama RM 17 7399 540562
Capranica Prenestina RM 17 351 540913
Fonte Nuova RM 19 32562 573475
Velletri RM 19 53303 626778
Pisoniano RM 19 770 627548
Genazzano RM 19 6036 633584
Artena RM 19 14276 647860
San Polo dei Cavalieri RM 19 2992 650852
Marcellina RM 20 7280 658132
Lanuvio RM 20 13632 671764

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Tivoli (56533 inhabitants)
16 Km S of Guidonia Montecelio (88673 inhabitants)
19 Km N of Velletri (53303 inhabitants)
22 Km E of Roma (2864731 inhabitants)
29 Km NE of Pomezia (62966 inhabitants)
30 Km N of Aprilia (73446 inhabitants)
43 Km E of Fiumicino (78395 inhabitants)
45 Km NW of Latina (125985 inhabitants)
46 Km N of Anzio (54211 inhabitants)
77 Km SW of L'Aquila (69753 inhabitants)
79 Km S of Terni (111501 inhabitants)
82 Km SE of Viterbo (67173 inhabitants)
83 Km E of Civitavecchia (52991 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 1.6
ML 0.5 		2010-03-15
01:03:43		 41.855 12.743 6 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1019499
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2010-03-15 01:03:43 ± 0.29
Latitude 41.8550 ± 0.0099
Longitude 12.7430 ± 0.0157
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1019499

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1381
Semi-minor axis of confidence ellipse (meter) 939
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 140
Circular confidence region, given by single value of horizontal uncertainty (meter) 1702.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 207
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.05306
Epicentral distance of station farthest from the epicenter (degree) 0.20055
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1019499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 19:34:19

Md:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1019499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 19:34:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERT.HHN. 2010-03-15T01:03:51.13 0.3 undecidable manual Sg 62 22.2555 0.109 72
IV.RDP.HHZ. 2010-03-15T01:03:47.24 0.3 undecidable manual Sg 191 10.9779 -0.073 74
IV.CERT.HHN. 2010-03-15T01:03:47.45 0.3 undecidable manual Pg 62 22.2555 -0.193 71
IV.RMP.HHZ. 2010-03-15T01:03:45.85 0.3 undecidable manual Sg 215 5.8941 -0.033 75
IV.RDP.HHZ. 2010-03-15T01:03:45.63 0.3 undecidable manual Pg 191 10.9779 0.128 73
IV.RMP.HHZ. 2010-03-15T01:03:44.72 0.1 undecidable manual Pg 215 5.8941 0.043 100
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