Earthquake with magnitude of ML 2.0 on date 03-02-2012 and time 16:43:27 (Italy) in region 1 km NE Gualdo (MC)

A magnitude ML 2.0 earthquake occured in region: 1 km NE Gualdo (MC), on

  • 03-02-2012 15:43:27 (UTC)
  • 03-02-2012 16:43:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.076, 13.344 at 25 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
Gualdo MC 1 815 815
San Ginesio MC 4 3498 4313
Sant'Angelo in Pontano MC 5 1436 5749
Sarnano MC 6 3264 9013
Penna San Giovanni MC 7 1108 10121
Cessapalombo MC 8 512 10633
Ripe San Ginesio MC 8 852 11485
Camporotondo di Fiastrone MC 9 563 12048
Monte San Martino MC 9 765 12813
Colmurano MC 10 1263 14076
Amandola FM 11 3629 17705
Falerone FM 11 3337 21042
Smerillo FM 11 365 21407
Loro Piceno MC 12 2401 23808
Caldarola MC 12 1823 25631
Servigliano FM 12 2336 27967
Montappone FM 12 1682 29649
Monte Vidon Corrado FM 13 731 30380
Bolognola MC 13 142 30522
Belforte del Chienti MC 13 1886 32408
Massa Fermana FM 14 963 33371
Montefalcone Appennino FM 14 424 33795
Urbisaglia MC 14 2628 36423
Santa Vittoria in Matenano FM 14 1330 37753
Comunanza AP 14 3166 40919
Acquacanina MC 15 121 41040
Montefortino FM 15 1178 42218
Monteleone di Fermo FM 15 395 42613
Tolentino MC 16 20069 62682
Fiastra MC 16 559 63241
Belmonte Piceno FM 16 646 63887
Mogliano MC 17 4696 68583
Serrapetrona MC 17 966 69549
Montelparo FM 17 778 70327
Montegiorgio FM 17 6851 77178
Force AP 17 1354 78532
Monsampietro Morico FM 17 659 79191
Petriolo MC 19 1998 81189
Montemonaco AP 20 604 81793
Montottone FM 20 979 82772

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
62 Km S of Ancona (100861 inhabitants)
78 Km E of Perugia (166134 inhabitants)
81 Km NE of Terni (111501 inhabitants)
81 Km N of L'Aquila (69753 inhabitants)
89 Km SE of Fano (60888 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
98 Km NW of Pescara (121014 inhabitants)
99 Km SE of Pesaro (94582 inhabitants)
Recent and historical seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 1.6
ML 2.0
2012-02-03
15:43:27
43.076 13.344 25 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1338739
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-02-03 15:43:27 ± 0.13
Latitude 43.0760 ± 0.0027
Longitude 13.3440 ± 0.0074
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1338739

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 531
Semi-minor axis of confidence ellipse (meter) 263
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 266
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34444
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1338739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 02:40:27

Md:1.6

Field Value
Value 1.6
Uncertainty 0
Num. used stations
Type of magnitude Md
Reference to an origin 1338739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 02:40:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SNTG.HHN. 2012-02-03T15:43:41.19 0.1 undecidable manual Sg 301 0.3444 0.049 94
IV.NRCA.HHZ. 2012-02-03T15:43:39.84 0.1 undecidable manual Sg 215 0.295 -0.013 95
IV.GUMA.HHE. 2012-02-03T15:43:35.14 0.1 undecidable manual Sg 207 0.0144 -0.031 100
IV.SNTG.HHN. 2012-02-03T15:43:35.31 0.1 undecidable manual Pg 301 0.3444 -0.083 93
IV.NRCA.HHZ. 2012-02-03T15:43:34.67 0.1 undecidable manual Pg 215 0.295 0.025 95
IV.OFFI.HHZ. 2012-02-03T15:43:33.65 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHE. 2012-02-03T15:43:32.00 0.1 undecidable manual Pg 207 0.0144 0.056 100
IV.MTGR.SHZ. 2012-02-03T15:43:32.40 10.0 undecidable manual Pg 0 0 0
IV.CAR1.HHE. 2012-02-03T15:43:26.26 10.0 undecidable manual Pg 0 0 0
IV.ORI.HHN. 2012-02-03T15:43:23.04 10.0 undecidable manual Pg 0 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ORI.HHN. Md:0 12 END duration s
IV.ORI.HHE. ML:0 0.000355 0.2 AML other m 2012-02-03T15:43:23.04
IV.CAR1.HHN. ML:0 0.000135 2.72 AML other m 2012-02-03T15:43:26.26
IV.CAR1.HHE. Md:0 7 END duration s
IV.GUMA.HHN. ML:0 0.0004 2.04 AML other m 2012-02-03T15:43:32.00
IV.GUMA.HHE. Md:1.5 16.2 END duration s
IV.MTGR.SHZ. Md:0 23 END duration s
IV.OFFI.HHN. ML:0 0.00051 1.56 AML other m 2012-02-03T15:43:33.65
IV.OFFI.HHE. ML:0 0.00079 2.18 AML other m 2012-02-03T15:43:33.65
IV.NRCA.HHN. ML:2.1 0.000345 0.1 AML other m 2012-02-03T15:43:34.67
IV.NRCA.HHE. ML:2.1 0.00049 0.12 AML other m 2012-02-03T15:43:34.67
IV.SNTG.HHN. Md:1.6 14.9 END duration s
IV.SNTG.HHE. ML:1.8 0.000195 0.18 AML other m 2012-02-03T15:43:35.31
IV.OFFI.HHZ. Md:0 34 END duration s
IV.NRCA.HHZ. Md:1.6 14 END duration s
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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