Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 16-05-2009 and time 16:10:46 (Italy) in region 4 km E Balsorano (AQ)

A magnitude ML 2.1 earthquake occured in region: 4 km E Balsorano (AQ), on

  • 16-05-2009 14:10:46 (UTC)
  • 16-05-2009 16:10:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8050, 13.6170 at 14 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
Balsorano AQ 4 3569 3569
Pescosolido FR 7 1555 5124
Villavallelonga AQ 7 919 6043
San Vincenzo Valle Roveto AQ 8 2347 8390
Campoli Appennino FR 9 1725 10115
Sora FR 9 26144 36259
Collelongo AQ 10 1233 37492
Broccostella FR 11 2741 40233
Posta Fibreno FR 14 1139 41372
Isola del Liri FR 14 11715 53087
Pescasseroli AQ 14 2203 55290
Morino AQ 15 1448 56738
Castelliri FR 15 3454 60192
Civita d'Antino AQ 15 979 61171
Lecce nei Marsi AQ 16 1702 62873
Fontechiari FR 16 1303 64176
Vicalvi FR 16 783 64959
Alvito FR 17 2713 67672
Ortucchio AQ 17 1860 69532
Arpino FR 17 7262 76794
Bisegna AQ 18 223 77017
Gioia dei Marsi AQ 18 1989 79006
Opi AQ 18 420 79426
Trasacco AQ 18 6246 85672
San Donato Val di Comino FR 20 2107 87779

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km S of L'Aquila (69753 inhabitants)
70 Km E of Tivoli (56533 inhabitants)
70 Km NE of Latina (125985 inhabitants)
71 Km E of Velletri (53303 inhabitants)
76 Km SW of Chieti (51815 inhabitants)
77 Km E of Guidonia Montecelio (88673 inhabitants)
84 Km E of Aprilia (73446 inhabitants)
88 Km SW of Pescara (121014 inhabitants)
90 Km SW of Montesilvano (53738 inhabitants)
91 Km E of Anzio (54211 inhabitants)
94 Km E of Pomezia (62966 inhabitants)
94 Km E of Roma (2864731 inhabitants)
95 Km S of Teramo (54892 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 2.2
ML 2.1 		2009-05-16
14:10:46		 41.805 13.617 14 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 867989
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-05-16 14:10:46 ± 0.06
Latitude 41.8050 ± 0.0036
Longitude 13.6170 ± 0.0036
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 867989

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 428
Semi-minor axis of confidence ellipse (meter) 37
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 10
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.59265
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 867989
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:28:49

Md:2.2

Field Value
Value 2.2
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 867989
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 16:28:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
I1.MSCL.BHN. 2009-05-16T14:11:27.68 10.0 undecidable manual Pg 0 0 0
IV.CRAC.EHE. 2009-05-16T14:11:25.47 10.0 undecidable manual Pg 0 0 0
IV.VAGA.HHN. 2009-05-16T14:11:11.17 10.0 undecidable manual Pg 0 0 0
IV.VCEL.EHZ. 2009-05-16T14:11:07.86 10.0 undecidable manual Pg 0 0 0
IV.MIDA.HHN. 2009-05-16T14:11:04.11 0.1 undecidable manual Sg 109 55.7997 0.344 85
IV.FAGN.HHN. 2009-05-16T14:11:04.80 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHZ. 2009-05-16T14:11:03.25 0.1 undecidable manual Sg 287 54.8007 -0.261 87
IV.LPEL.HHZ. 2009-05-16T14:11:03.25 0.3 undecidable manual Sg 60 53.9016 -0.019 69
IV.RNI2.HHZ. 2009-05-16T14:11:01.60 0.3 undecidable manual Sg 104 45.7209 0.509 63
IV.CERA.HHZ. 2009-05-16T14:10:59.71 0.1 undecidable manual Sg 124 40.4262 0.034 94
IV.GIUL.HHZ. 2009-05-16T14:10:59.93 0.3 undecidable manual Sg 228 40.626 0.207 69
IV.PTQR.SHZ. 2009-05-16T14:10:57.17 0.3 undecidable manual Sg 324 29.9478 0.264 68
IV.INTR.HHZ. 2009-05-16T14:10:57.65 0.1 undecidable manual Sg 46 33.0447 -0.068 95
IV.FIAM.HHE. 2009-05-16T14:10:57.69 0.3 undecidable manual Pg 321 65.7897 -0.281 64
IV.MIDA.HHN. 2009-05-16T14:10:56.08 0.3 undecidable manual Pg 109 55.7997 -0.347 64
IV.CERT.HHZ. 2009-05-16T14:10:56.09 0.1 undecidable manual Pg 287 54.8007 -0.189 88
IV.LPEL.HHZ. 2009-05-16T14:10:55.72 0.1 undecidable manual Pg 60 53.9016 -0.42 85
IV.GUAR.HHZ. 2009-05-16T14:10:55.76 0.1 undecidable manual Sg 268 25.1526 0.109 96
IV.RNI2.HHZ. 2009-05-16T14:10:55.16 0.1 undecidable manual Pg 104 45.7209 0.278 88
IV.SDI.SHZ. 2009-05-16T14:10:54.04 0.1 undecidable manual Sg 123 19.1697 -0.067 97
IV.GIUL.HHZ. 2009-05-16T14:10:54.17 0.1 undecidable manual Pg 228 40.626 0.081 94
IV.CERA.HHZ. 2009-05-16T14:10:53.84 0.1 undecidable manual Pg 124 40.4262 -0.225 90
IV.INTR.HHZ. 2009-05-16T14:10:52.83 0.1 undecidable manual Pg 46 33.0447 -0.105 94
IV.POFI.HHZ. 2009-05-16T14:10:52.24 0.1 undecidable manual Sg 141 12.4764 -0.273 94
IV.PTQR.SHZ. 2009-05-16T14:10:52.63 0.3 undecidable manual Pg 324 29.9478 0.163 70
IV.VVLD.HHZ. 2009-05-16T14:10:51.48 0.1 undecidable manual Sg 4 7.1928 -0.036 100
IV.GUAR.HHZ. 2009-05-16T14:10:51.91 0.1 undecidable manual Pg 268 25.1526 0.169 94
IV.SDI.SHZ. 2009-05-16T14:10:50.86 0.1 undecidable manual Pg 123 19.1697 0.011 98
IV.POFI.HHZ. 2009-05-16T14:10:49.95 0.1 undecidable manual Pg 141 12.4764 0.021 99
IV.VVLD.HHZ. 2009-05-16T14:10:49.56 0.1 undecidable manual Pg 4 7.1928 0.205 96
IV.CIGN.HHZ. 2009-05-16T14:10:31.90 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