Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 07-09-2012 and time 05:31:50 (Italy) in region 2 km W Gualdo (MC)

A magnitude ML 1.4 earthquake occured in region: 2 km W Gualdo (MC), on

  • 07-09-2012 03:31:50 (UTC)
  • 07-09-2012 05:31:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0630, 13.3180 at 24 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
Gualdo MC 2 815 815
Sarnano MC 3 3264 4079
San Ginesio MC 5 3498 7577
Cessapalombo MC 7 512 8089
Sant'Angelo in Pontano MC 8 1436 9525
Penna San Giovanni MC 9 1108 10633
Camporotondo di Fiastrone MC 9 563 11196
Amandola FM 10 3629 14825
Ripe San Ginesio MC 10 852 15677
Monte San Martino MC 11 765 16442
Bolognola MC 11 142 16584
Caldarola MC 11 1823 18407
Colmurano MC 12 1263 19670
Acquacanina MC 12 121 19791
Smerillo FM 12 365 20156
Belforte del Chienti MC 13 1886 22042
Montefortino FM 13 1178 23220
Fiastra MC 13 559 23779
Falerone FM 14 3337 27116
Comunanza AP 14 3166 30282
Loro Piceno MC 14 2401 32683
Montefalcone Appennino FM 14 424 33107
Servigliano FM 14 2336 35443
Montappone FM 15 1682 37125
Monte Vidon Corrado FM 15 731 37856
Santa Vittoria in Matenano FM 15 1330 39186
Urbisaglia MC 16 2628 41814
Massa Fermana FM 16 963 42777
Serrapetrona MC 17 966 43743
Tolentino MC 17 20069 63812
Monteleone di Fermo FM 17 395 64207
Force AP 18 1354 65561
Montemonaco AP 18 604 66165
Belmonte Piceno FM 18 646 66811
Montelparo FM 18 778 67589
Fiordimonte MC 19 202 67791
Pievebovigliana MC 19 866 68657
Mogliano MC 19 4696 73353
Monsampietro Morico FM 19 659 74012
Montegiorgio FM 19 6851 80863
Ussita MC 20 444 81307

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
64 Km S of Ancona (100861 inhabitants)
76 Km E of Perugia (166134 inhabitants)
78 Km NE of Terni (111501 inhabitants)
79 Km N of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
99 Km NW of Pescara (121014 inhabitants)
100 Km SE of Pesaro (94582 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
Reviewed
Rev100 		ML 1.4 2012-09-07
03:31:50		 43.0645 13.3135 23 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2129781
Bulletin
Rev1000 		ML 1.4 2012-09-07
03:31:50		 43.0628 13.3183 25 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 3084361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-09-07 03:31:50 ± 0.13
Latitude 43.0628 ± 0.0036
Longitude 13.3183 ± 0.0086
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3084361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 688
Semi-minor axis of confidence ellipse (meter) 324
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 101
Circular confidence region, given by single value of horizontal uncertainty (meter) 690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.01259
Epicentral distance of station farthest from the epicenter (degree) 0.33545
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 3084361
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:45:19

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 2129781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-09-07 03:40:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2012-09-07T03:32:03.25 0.3 undecidable manual S 329 34.3434 119 0.13 69
IV.SNTG.HHZ. 2012-09-07T03:32:03.94 0.1 undecidable manual S 305 37.2294 117 0.14 92
IV.CING.HHZ. 2012-09-07T03:32:03.78 0.3 undecidable manual S 344 36.0417 118 0.25 67
IV.NRCA.HHZ. 2012-09-07T03:32:02.41 0.1 undecidable manual S 213 30.3474 123 0.21 93
IV.FDMO.HHZ. 2012-09-07T03:31:59.72 0.1 undecidable manual S 261 18.9699 138 -0.14 95
IV.GUMA.HHZ. 2012-09-07T03:31:58.06 0.1 undecidable manual S 91 1.3986 176 0.11 100
IV.CSP1.EHZ. 2012-09-07T03:31:58.31 0.1 undecidable manual S 289 9.7791 156 -0.19 95
IV.SNTG.HHZ. 2012-09-07T03:31:58.20 0.1 undecidable manual P 305 37.2294 117 0.01 94
IV.CING.HHZ. 2012-09-07T03:31:57.87 0.1 undecidable manual P 344 36.0417 118 -0.16 92
IV.NRCA.HHZ. 2012-09-07T03:31:57.32 0.1 undecidable manual P 213 30.3474 123 0.06 95
IV.EL6.EHZ. 2012-09-07T03:31:57.78 0.1 undecidable manual P 329 34.3434 119 -0.01 95
IV.FDMO.HHZ. 2012-09-07T03:31:55.75 0.1 undecidable manual P 261 18.9699 138 -0.16 94
IV.GUMA.HHZ. 2012-09-07T03:31:54.80 0.1 undecidable manual P 91 1.3986 176 -0.01 100
IV.CSP1.EHZ. 2012-09-07T03:31:54.99 0.1 undecidable manual P 289 9.7791 156 -0.14 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.2 0.0000883 0.16 AML other m 2012-09-07T03:31:59.77
IV.FDMO.HHN. ML:1.1 0.0000664 1.34 AML other m 2012-09-07T03:32:00.58
IV.NRCA.HHE. ML:1.7 0.000187 0.6 AML other m 2012-09-07T03:32:02.82
IV.NRCA.HHN. ML:1.5 0.000129 0.14 AML other m 2012-09-07T03:32:03.87
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