Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 23-08-2009 and time 13:02:59 (Italy) in region 5 km W Montefortino (FM)

A magnitude ML 2.1 earthquake occured in region: 5 km W Montefortino (FM), on

  • 23-08-2009 11:02:59 (UTC)
  • 23-08-2009 13:02:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9410, 13.2860 at 50 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
Montefortino FM 5 1178 1178
Montemonaco AP 6 604 1782
Amandola FM 7 3629 5411
Bolognola MC 8 142 5553
Sarnano MC 11 3264 8817
Comunanza AP 11 3166 11983
Montegallo AP 12 523 12506
Ussita MC 12 444 12950
Castelsantangelo sul Nera MC 12 281 13231
Acquacanina MC 13 121 13352
Palmiano AP 15 196 13548
Gualdo MC 15 815 14363
Smerillo FM 15 365 14728
Fiastra MC 15 559 15287
Montefalcone Appennino FM 15 424 15711
Monte San Martino MC 16 765 16476
Visso MC 16 1107 17583
Force AP 17 1354 18937
Penna San Giovanni MC 17 1108 20045
Roccafluvione AP 18 2010 22055
Venarotta AP 18 2066 24121
Arquata del Tronto AP 19 1178 25299
Cessapalombo MC 19 512 25811
San Ginesio MC 19 3498 29309
Fiordimonte MC 19 202 29511
Santa Vittoria in Matenano FM 19 1330 30841
Sant'Angelo in Pontano MC 20 1436 32277

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km NW of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
66 Km N of L'Aquila (69753 inhabitants)
67 Km NE of Terni (111501 inhabitants)
75 Km E of Perugia (166134 inhabitants)
78 Km S of Ancona (100861 inhabitants)
85 Km NW of Montesilvano (53738 inhabitants)
93 Km NW of Pescara (121014 inhabitants)
98 Km NW of Chieti (51815 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 2.1
ML 2.1 		2009-08-23
11:02:59		 42.941 13.286 50 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 954079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-08-23 11:02:59 ± 0.17
Latitude 42.9410 ± 0.0072
Longitude 13.2860 ± 0.0160
Depth (km) 50 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 954079

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1282
Semi-minor axis of confidence ellipse (meter) 404
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 1526.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.94789
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 954079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:12:44

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 954079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:12:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RAVA.EHE. 2009-08-23T11:04:10.34 10.0 undecidable manual Sg 0 0 0
IV.FIU.EHN. 2009-08-23T11:03:39.41 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHE. 2009-08-23T11:03:27.26 0.3 undecidable manual Sg 268 95.4378 -0.343 62
IV.PIEI.HHE. 2009-08-23T11:03:26.93 0.3 undecidable manual Sg 318 89.6436 0.535 57
IV.FAGN.HHN. 2009-08-23T11:03:26.51 10.0 undecidable manual Sg 0 0 0
MN.PDG.HHE. 2009-08-23T11:03:26.20 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-08-23T11:03:23.13 0.3 undecidable manual Sg 300 71.2731 0.509 59
IV.CING.HHN. 2009-08-23T11:03:18.17 0.3 undecidable manual Sg 351 48.7179 -0.134 69
IV.LNSS.HHZ. 2009-08-23T11:03:17.25 0.3 undecidable manual Sg 208 42.5241 0.013 71
IV.BADI.EHN. 2009-08-23T11:03:17.95 0.3 undecidable manual Pg 307 105.2169 1.038 44
IV.CAMP.HHZ. 2009-08-23T11:03:17.67 0.3 undecidable manual Sg 167 46.1205 -0.168 68
IV.TERO.HHZ. 2009-08-23T11:03:17.94 0.3 undecidable manual Sg 144 43.8228 0.492 65
IV.CESI.HHE. 2009-08-23T11:03:16.13 0.3 undecidable manual Sg 283 31.746 0.549 64
IV.FAGN.HHN. 2009-08-23T11:03:15.92 10.0 undecidable manual Pg 0 0 0
IV.SMA1.EHZ. 2009-08-23T11:03:15.91 0.1 undecidable manual Sg 173 34.743 -0.094 94
IV.FSSB.HHE. 2009-08-23T11:03:15.13 0.3 undecidable manual Pg 334 92.9403 -0.297 62
IV.MGAB.HHE. 2009-08-23T11:03:15.31 0.3 undecidable manual Pg 268 95.4378 -0.411 60
IV.FDMO.HHE. 2009-08-23T11:03:14.29 0.1 undecidable manual Sg 303 19.2696 0.181 96
IV.GUMA.HHE. 2009-08-23T11:03:14.50 0.3 undecidable manual Sg 16 14.0748 0.825 61
IV.PIEI.HHE. 2009-08-23T11:03:14.79 0.3 undecidable manual Pg 318 89.6436 -0.232 63
IV.VCEL.EHE. 2009-08-23T11:03:13.46 0.3 undecidable manual Pg 143 75.6687 0.103 66
IV.FIAM.HHN. 2009-08-23T11:03:13.89 0.3 undecidable manual Pg 191 75.9684 0.499 60
IV.NRCA.SHZ. 2009-08-23T11:03:13.62 0.3 undecidable manual Sg 229 18.3705 -0.404 68
IV.MNS.HHN. 2009-08-23T11:03:13.48 0.3 undecidable manual Pg 219 78.9654 -0.268 64
IV.MURB.HHN. 2009-08-23T11:03:13.04 0.3 undecidable manual Pg 300 71.2731 0.197 64
IV.CESX.HHN. 2009-08-23T11:03:12.78 0.3 undecidable manual Pg 238 68.1762 0.289 64
IV.RAVA.EHE. 2009-08-23T11:03:12.11 10.0 undecidable manual Pg 0 0 0
IV.ARVD.HHZ. 2009-08-23T11:03:11.95 0.3 undecidable manual Pg 336 67.7766 -0.489 62
IV.CAMP.HHZ. 2009-08-23T11:03:10.01 0.3 undecidable manual Pg 167 46.1205 -0.071 70
IV.TERO.HHZ. 2009-08-23T11:03:09.75 0.1 undecidable manual Pg 144 43.8228 -0.107 93
IV.LNSS.HHZ. 2009-08-23T11:03:09.82 0.1 undecidable manual Pg 208 42.5241 0.086 93
IV.CING.HHN. 2009-08-23T11:03:09.88 0.3 undecidable manual Pg 351 48.7179 -0.472 64
IV.CESI.HHE. 2009-08-23T11:03:08.63 0.1 undecidable manual Pg 283 31.746 -0.148 95
IV.SMA1.EHZ. 2009-08-23T11:03:08.98 0.1 undecidable manual Pg 173 34.743 -0.042 96
IV.SNTG.SHZ. 2009-08-23T11:03:08.99 0.3 undecidable manual Pg 321 44.622 -0.952 54
IV.FDMO.HHE. 2009-08-23T11:03:07.68 0.1 undecidable manual Pg 303 19.2696 -0.248 95
IV.GUMA.HHE. 2009-08-23T11:03:07.71 0.1 undecidable manual Pg 16 14.0748 0.033 100
IV.NRCA.SHZ. 2009-08-23T11:03:07.78 0.1 undecidable manual Pg 229 18.3705 -0.098 98
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
Waveforms Seismic signals in miniseed + resp format Download