Earthquake with magnitude of ML 1.0 on date 07-08-2011 and time 23:38:04 (UTC) in region 2 km S Nemi (RM)

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

  • 07-08-2011 23:38:04 (UTC)
  • 08-08-2011 01:38:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7020, 12.7200 at 8 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
Nemi RM 2 1943 1943
Genzano di Roma RM 2 23970 25913
Lanuvio RM 3 13632 39545
Ariccia RM 5 19407 58952
Velletri RM 5 53303 112255
Albano Laziale RM 6 41715 153970
Rocca di Papa RM 7 17034 171004
Castel Gandolfo RM 8 8997 180001
Marino RM 9 43026 223027
Lariano RM 10 13432 236459
Grottaferrata RM 11 20327 256786
Rocca Priora RM 11 11962 268748
Monte Compatri RM 12 11978 280726
Frascati RM 12 22087 302813
Monte Porzio Catone RM 13 8693 311506
Aprilia LT 13 73446 384952
Ciampino RM 15 38412 423364
San Cesareo RM 15 15153 438517
Colonna RM 15 4287 442804
Cisterna di Latina LT 15 36868 479672
Labico RM 17 6379 486051
Artena RM 17 14276 500327
Rocca Massima LT 17 1136 501463
Cori LT 17 11065 512528
Ardea RM 18 49183 561711
Zagarolo RM 18 17843 579554
Pomezia RM 18 62966 642520
Valmontone RM 19 15959 658479

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km W of Velletri (53303 inhabitants)
13 Km NE of Aprilia (73446 inhabitants)
18 Km E of Pomezia (62966 inhabitants)
29 Km SE of Roma (2864731 inhabitants)
29 Km N of Anzio (54211 inhabitants)
30 Km S of Tivoli (56533 inhabitants)
30 Km NW of Latina (125985 inhabitants)
33 Km S of Guidonia Montecelio (88673 inhabitants)
41 Km E of Fiumicino (78395 inhabitants)
88 Km SE of Civitavecchia (52991 inhabitants)
92 Km SW of L'Aquila (69753 inhabitants)
94 Km SE of Viterbo (67173 inhabitants)
96 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 1.5
ML 1.0
2011-08-07
23:38:04
41.702 12.72 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1269739
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-07 23:38:04 ± 0.06
Latitude 41.7020 ± 0.0009
Longitude 12.7200 ± 0.0120
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1269739

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1040
Semi-minor axis of confidence ellipse (meter) 62
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 1005.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 217
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.04
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.10972
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 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 1269739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:03:54

Md:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1269739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:03:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2011-08-07T23:38:48.65 10.0 undecidable manual Sg 0 0 0
IV.FRON.EHZ. 2011-08-07T23:38:42.70 10.0 undecidable manual Pg 0 0 0
IV.RMP.HHZ. 2011-08-07T23:38:09.90 0.1 undecidable manual Sg 353 12.1767 0.016 98
IV.RDP.HHZ. 2011-08-07T23:38:08.29 0.1 undecidable manual Sg 357 6.2937 -0.021 99
IV.RMP.HHZ. 2011-08-07T23:38:07.74 0.1 undecidable manual Pg 353 12.1767 -0.034 98
IV.LAV9.HHZ. 2011-08-07T23:38:07.76 0.1 undecidable manual Sg 214 3.1968 -0.002 100
IV.LAV9.HHZ. 2011-08-07T23:38:06.55 0.1 undecidable manual Pg 214 3.1968 -0.003 100
IV.RDP.HHZ. 2011-08-07T23:38:06.90 0.1 undecidable manual Pg 357 6.2937 0.03 99
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