Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 13-02-2013 and time 23:51:38 (Italy) in region 6 km W Montefortino (FM)

A magnitude ML 2.1 earthquake occured in region: 6 km W Montefortino (FM), on

  • 13-02-2013 22:51:38 (UTC)
  • 13-02-2013 23:51:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9440, 13.2640 at 26 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 6 1178 1178
Bolognola MC 6 142 1320
Montemonaco AP 7 604 1924
Amandola FM 9 3629 5553
Ussita MC 10 444 5997
Castelsantangelo sul Nera MC 10 281 6278
Sarnano MC 11 3264 9542
Acquacanina MC 12 121 9663
Comunanza AP 12 3166 12829
Montegallo AP 13 523 13352
Fiastra MC 14 559 13911
Visso MC 14 1107 15018
Gualdo MC 15 815 15833
Smerillo FM 16 365 16198
Palmiano AP 17 196 16394
Montefalcone Appennino FM 17 424 16818
Monte San Martino MC 17 765 17583
Fiordimonte MC 18 202 17785
Penna San Giovanni MC 18 1108 18893
Cessapalombo MC 19 512 19405
Force AP 19 1354 20759
San Ginesio MC 19 3498 24257
Arquata del Tronto AP 19 1178 25435
Roccafluvione AP 20 2010 27445
Preci PG 20 724 28169
Pievebovigliana MC 20 866 29035
Venarotta AP 20 2066 31101

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km E of Foligno (57155 inhabitants)
48 Km NW of Teramo (54892 inhabitants)
66 Km NE of Terni (111501 inhabitants)
67 Km N of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
78 Km S of Ancona (100861 inhabitants)
87 Km NW of Montesilvano (53738 inhabitants)
94 Km NW of Pescara (121014 inhabitants)
99 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 		ML 2.1 2013-02-13
22:51:38		 42.9438 13.2638 26 2015-01-20
11:22:41		 Bollettino Sismico Italiano INGV 3398381
Reviewed
Rev100 		ML 2.0 2013-02-13
22:51:38		 42.9468 13.2603 25 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2951831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-02-13 22:51:38 ± 0.13
Latitude 42.9438 ± 0.0036
Longitude 13.2638 ± 0.0074
Depth (km) 26 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3398381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 577
Semi-minor axis of confidence ellipse (meter) 312
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.12950
Epicentral distance of station farthest from the epicenter (degree) 0.83187
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 3398381
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 12:55:19

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 2951831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-02-13 22:56:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2013-02-13T22:51:59.62 0.3 undecidable manual S 325 67.0773 105 0.5 61
IV.FOSV.EHZ. 2013-02-13T22:51:56.44 0.3 undecidable manual S 314 56.2992 109 0.07 69
IV.ASSB.HHZ. 2013-02-13T22:51:55.04 0.3 undecidable manual S 283 50.3163 111 0.19 68
IV.CAMP.HHZ. 2013-02-13T22:51:54.35 0.3 undecidable manual S 165 46.8198 113 0.37 67
IV.TERO.HHZ. 2013-02-13T22:51:53.89 0.3 undecidable manual S 142 45.1215 114 0.32 69
IV.SNTG.HHZ. 2013-02-13T22:51:53.60 0.3 undecidable manual S 323 43.3233 115 0.46 65
IV.NARO.HHZ. 2013-02-13T22:51:53.98 0.1 undecidable manual P 324 92.3409 101 -0.09 87
IV.LNSS.HHZ. 2013-02-13T22:51:53.33 0.3 undecidable manual S 206 41.9247 116 0.52 65
IV.PIEI.HHZ. 2013-02-13T22:51:53.25 0.1 undecidable manual P 318 88.245 101 -0.19 86
IV.EL6.EHZ. 2013-02-13T22:51:53.67 0.3 undecidable manual S 343 44.7219 114 0.19 69
IV.SMA1.EHZ. 2013-02-13T22:51:51.21 0.3 undecidable manual S 170 35.2425 121 -0.01 72
IV.SSFR.HHZ. 2013-02-13T22:51:50.16 0.1 undecidable manual P 325 67.0773 105 -0.12 90
IV.FOSV.EHZ. 2013-02-13T22:51:48.63 0.1 positive manual P 314 56.2992 109 -0.06 94
IV.ASSB.HHZ. 2013-02-13T22:51:47.73 0.1 undecidable manual P 283 50.3163 111 -0.09 94
IV.FDMO.HHZ. 2013-02-13T22:51:47.05 0.1 undecidable manual S 306 17.6712 142 -0.61 87
IV.GUMA.HHZ. 2013-02-13T22:51:47.37 0.3 undecidable manual S 24 14.3745 148 0.21 74
IV.CAMP.HHZ. 2013-02-13T22:51:47.11 0.1 undecidable manual P 165 46.8198 113 -0.2 91
IV.NRCA.HHZ. 2013-02-13T22:51:47.37 0.3 undecidable manual S 225 17.2716 143 -0.22 72
IV.LNSS.HHZ. 2013-02-13T22:51:46.73 0.1 undecidable manual P 206 41.9247 116 0.09 95
IV.EL6.EHZ. 2013-02-13T22:51:46.96 0.1 positive manual P 343 44.7219 114 -0.06 95
IV.TERO.HHZ. 2013-02-13T22:51:46.89 0.1 undecidable manual P 142 45.1215 114 -0.19 91
IV.SNTG.HHZ. 2013-02-13T22:51:46.63 0.1 undecidable manual P 323 43.3233 115 -0.19 93
IV.SMA1.EHZ. 2013-02-13T22:51:45.74 0.3 undecidable manual P 170 35.2425 121 0.02 73
IV.GUMA.HHZ. 2013-02-13T22:51:43.47 0.1 positive manual P 24 14.3745 148 0.09 100
IV.NRCA.HHZ. 2013-02-13T22:51:43.55 0.1 negative manual P 225 17.2716 143 -0.08 99
IV.FDMO.HHZ. 2013-02-13T22:51:43.41 0.1 positive manual P 306 17.6712 142 -0.25 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.9 0.00016549999999999998 0.78 AML other m 2013-02-13T22:51:56.19
IV.ASSB.HHE. ML:2.0 0.000213 0.72 AML other m 2013-02-13T22:51:55.87
IV.FDMO.HHN. ML:2.1 0.000628 1.22 AML other m 2013-02-13T22:51:47.47
IV.FDMO.HHE. ML:2.2 0.0006845 0.2 AML other m 2013-02-13T22:51:48.08
IV.FOSV.EHE. ML:1.8 0.00012935 0.5 AML other m 2013-02-13T22:51:57.05
IV.FOSV.EHN. ML:2.1 0.000272 0.38 AML other m 2013-02-13T22:51:57.05
IV.GUMA.HHN. ML:2.4 0.00147 0.28 AML other m 2013-02-13T22:51:47.63
IV.GUMA.HHE. ML:2.5 0.001725 0.2 AML other m 2013-02-13T22:51:47.61
IV.LNSS.HHE. ML:2.0 0.000286 0.24 AML other m 2013-02-13T22:51:53.61
IV.LNSS.HHN. ML:1.9 0.00021100000000000003 0.58 AML other m 2013-02-13T22:51:54.11
IV.MURB.HHE. ML:2.2 0.00023199999999999997 0.2 AML other m 2013-02-13T22:52:01.65
IV.MURB.HHN. ML:2.1 0.000189 1.38 AML other m 2013-02-13T22:52:02.58
IV.NRCA.HHE. ML:2.2 0.0007465 0.12 AML other m 2013-02-13T22:51:47.85
IV.NRCA.HHN. ML:2.0 0.0005115 0.1 AML other m 2013-02-13T22:51:48.51
IV.SMA1.EHN. ML:2.0 0.00034899999999999997 0.24 AML other m 2013-02-13T22:51:51.74
IV.SMA1.EHE. ML:2.2 0.00046599999999999994 0.22 AML other m 2013-02-13T22:51:51.65
IV.SSFR.HHE. ML:2.1 0.000199 1.16 AML other m 2013-02-13T22:52:02.15
IV.SSFR.HHN. ML:2.0 0.00016999999999999999 0.28 AML other m 2013-02-13T22:51:50.56
IV.TERO.HHE. ML:1.5 0.00007525000000000001 1.34 AML other m 2013-02-13T22:51:55.34
IV.TERO.HHN. ML:1.6 0.00009290000000000001 1.36 AML other m 2013-02-13T22:51:54.65
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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