Earthquake with magnitude of ML 3.4 on date 31-01-2010 and time 22:21:30 (Italy) in region 5 km W Ocre (AQ)

A magnitude ML 3.4 earthquake occured in region: 5 km W Ocre (AQ), on

  • 31-01-2010 21:21:30 (UTC)
  • 31-01-2010 22:21:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.2680, 13.4170 at 10 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
Ocre AQ 5 1167 1167
Fossa AQ 7 721 1888
Rocca di Cambio AQ 7 533 2421
Lucoli AQ 7 1011 3432
Sant'Eusanio Forconese AQ 9 394 3826
L'Aquila AQ 10 69753 73579
Tornimparte AQ 10 3187 76766
Villa Sant'Angelo AQ 10 424 77190
Rocca di Mezzo AQ 11 1526 78716
Poggio Picenze AQ 12 1136 79852
San Demetrio ne' Vestini AQ 12 1854 81706
Fagnano Alto AQ 13 418 82124
Prata d'Ansidonia AQ 16 496 82620
Barisciano AQ 16 1828 84448
Fontecchio AQ 16 369 84817
Ovindoli AQ 17 1227 86044
Borgorose RI 17 4591 90635
Scoppito AQ 18 3727 94362
Massa d'Albe AQ 18 1476 95838
Tione degli Abruzzi AQ 19 310 96148
San Pio delle Camere AQ 20 661 96809
Magliano de' Marsi AQ 20 3690 100499

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km S of L'Aquila (69753 inhabitants)
50 Km SW of Teramo (54892 inhabitants)
61 Km NE of Tivoli (56533 inhabitants)
63 Km W of Chieti (51815 inhabitants)
64 Km E of Guidonia Montecelio (88673 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
69 Km W of Pescara (121014 inhabitants)
71 Km E of Terni (111501 inhabitants)
83 Km NE of Velletri (53303 inhabitants)
88 Km E of Roma (2864731 inhabitants)
96 Km SE of Foligno (57155 inhabitants)
98 Km NE of Aprilia (73446 inhabitants)
99 Km NE of Latina (125985 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is 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 shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is 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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 3.4 2010-01-31
21:21:30
42.268 13.417 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1010229
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2010-01-31 21:21:30 ± 0.08
Latitude 42.2680 ± 0.0045
Longitude 13.4170 ± 0.0061
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1010229

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 554
Semi-minor axis of confidence ellipse (meter) 293
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 707.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 99
Number of defining phases 50
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.52
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.28873
Number of stations at which the event was observed 84
Number of stations from which data was used for origin computation 38
Magnitude information

ML:3.4

Field Value
Value 3.4
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1010229
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 19:22:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.DAVOX.HHN. 2010-01-31T21:22:50.98 10.0 undecidable manual Pg 0 0 0
SI.ROSI.BHN. 2010-01-31T21:22:46.08 10.0 undecidable manual Pg 0 0 0
SI.ABSI.BHZ. 2010-01-31T21:22:43.35 10.0 undecidable manual Pg 0 0 0
SI.KOSI.BHZ. 2010-01-31T21:22:39.60 10.0 undecidable manual Pg 0 0 0
IV.MABI.HHN. 2010-01-31T21:22:37.69 10.0 undecidable manual Pg 0 0 0
NI.AGOR.HHN. 2010-01-31T21:22:34.84 10.0 undecidable manual Pg 0 0 0
IV.MAGA.HHN. 2010-01-31T21:22:33.54 10.0 undecidable manual Pg 0 0 0
RF.GEPF.HHZ. 2010-01-31T21:22:33.00 10.0 undecidable manual Pn 0 0 0
NI.PALA.HHZ. 2010-01-31T21:22:32.74 10.0 undecidable manual Pg 0 0 0
IV.ROVR.HHN. 2010-01-31T21:22:29.75 10.0 undecidable manual Pg 0 0 0
IV.GSCL.SHZ. 2010-01-31T21:22:19.58 10.0 undecidable manual Pg 0 0 0
IV.CSSN.SHZ. 2010-01-31T21:22:15.97 10.0 undecidable manual Pn 0 0 0
IV.PII.SHZ. 2010-01-31T21:22:14.22 10.0 undecidable manual Pg 0 0 0
IV.SEI.SHZ. 2010-01-31T21:22:14.48 10.0 undecidable manual Pg 0 0 0
IV.VMG.SHZ. 2010-01-31T21:22:08.50 10.0 undecidable manual Pg 0 0 0
IV.VULT.HHZ. 2010-01-31T21:22:08.39 10.0 undecidable manual Pg 0 0 0
IV.MSAG.HHN. 2010-01-31T21:22:05.63 10.0 undecidable manual Pn 0 0 0
IV.GRFL.SHZ. 2010-01-31T21:22:05.81 10.0 undecidable manual Pg 0 0 0
IV.CSNT.HHZ. 2010-01-31T21:22:05.32 10.0 undecidable manual Pg 0 0 0
IV.MCRV.HHE. 2010-01-31T21:22:05.66 10.0 undecidable manual Pg 0 0 0
IV.ASQU.HHE. 2010-01-31T21:22:04.49 10.0 undecidable manual Pg 0 0 0
IV.SGRT.HHZ. 2010-01-31T21:22:02.92 10.0 undecidable manual Pg 0 0 0
IV.CRE.HHN. 2010-01-31T21:22:01.80 10.0 undecidable manual Pg 0 0 0
IV.PARC.HHN. 2010-01-31T21:22:00.89 10.0 undecidable manual Pg 0 0 0
IV.ARCI.HHZ. 2010-01-31T21:21:59.98 10.0 undecidable manual Pg 0 0 0
IV.CDCA.EHE. 2010-01-31T21:21:59.68 10.0 undecidable manual Sn 0 0 0
IV.CAFI.HHZ. 2010-01-31T21:21:59.04 10.0 undecidable manual Pg 0 0 0
IV.SALO.HHE. 2010-01-31T21:21:58.68 10.0 undecidable manual Pn 0 0 0
IV.PE9.EHZ. 2010-01-31T21:21:58.40 10.0 undecidable manual Pg 0 0 0
IV.FSSB.SHZ. 2010-01-31T21:21:58.13 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2010-01-31T21:21:57.07 10.0 undecidable manual Pg 0 0 0
IV.PTRJ.HHN. 2010-01-31T21:21:55.06 10.0 undecidable manual Pg 0 0 0
IV.SACS.HHE. 2010-01-31T21:21:55.09 0.6 undecidable manual Pg 298 138.9609 1.599 21
IV.GATE.HHN. 2010-01-31T21:21:55.95 10.0 undecidable manual Pg 0 0 0
IV.MELA.HHZ. 2010-01-31T21:21:55.08 10.0 undecidable manual Pg 0 0 0
IV.AOI.HHN. 2010-01-31T21:21:55.62 0.6 undecidable manual Pg 6 143.0457 1.499 22
IV.ARVD.HHZ. 2010-01-31T21:21:54.08 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2010-01-31T21:21:54.04 10.0 undecidable manual Pn 0 0 0
IV.CDCA.EHE. 2010-01-31T21:21:54.84 10.0 undecidable manual Pn 0 0 0
IV.MODR.HHN. 2010-01-31T21:21:53.65 10.0 undecidable manual Pg 0 0 0
IV.CIGN.HHE. 2010-01-31T21:21:53.53 10.0 undecidable manual Pg 0 0 0
IV.MSC.EHZ. 2010-01-31T21:21:53.82 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHZ. 2010-01-31T21:21:52.54 0.3 undecidable manual Pg 304 128.2716 0.69 51
IV.NRCA.HHN. 2010-01-31T21:21:51.64 0.6 undecidable manual Sg 339 67.4769 0.425 42
IV.LPEL.HHZ. 2010-01-31T21:21:51.86 0.1 undecidable manual Sg 111 67.6767 0.591 79
IV.SGG.HHZ. 2010-01-31T21:21:51.93 0.3 undecidable manual Pg 141 126.0738 0.432 56
IV.BSSO.HHE. 2010-01-31T21:21:51.68 0.3 undecidable manual Pg 129 125.874 0.201 59
IV.CING.HHZ. 2010-01-31T21:21:50.97 0.1 undecidable manual Pg 352 124.1868 -0.244 78
IV.SACR.HHN. 2010-01-31T21:21:50.45 10.0 undecidable manual Pg 0 0 0
IV.VAGA.HHZ. 2010-01-31T21:21:50.39 0.1 undecidable manual Pg 144 116.1948 0.406 76
IV.FRES.HHZ. 2010-01-31T21:21:49.22 10.0 undecidable manual Pg 0 0 0
IV.TRTR.HHZ. 2010-01-31T21:21:48.29 10.0 undecidable manual Sg 0 0 0
IV.TRIV.HHZ. 2010-01-31T21:21:48.88 0.1 undecidable manual Pg 120 108.7134 0.054 83
IV.INTR.HHZ. 2010-01-31T21:21:47.45 0.3 undecidable manual Sg 125 49.2174 1.11 49
IV.MIDA.HHN. 2010-01-31T21:21:46.76 0.1 undecidable manual Pg 135 97.9242 -0.411 79
IV.T0401.EHZ. 2010-01-31T21:21:46.35 0.1 undecidable manual Pg 9 89.3439 0.515 78
IV.RNI2.HHE. 2010-01-31T21:21:46.47 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHZ. 2010-01-31T21:21:46.12 0.1 undecidable manual Pg 333 91.8414 -0.107 85
IV.ROM9.HHZ. 2010-01-31T21:21:46.39 0.6 undecidable manual Pg 237 88.8444 0.631 38
IV.MA9.HHZ. 2010-01-31T21:21:45.81 10.0 undecidable manual Sg 0 0 0
IV.CERA.HHZ. 2010-01-31T21:21:45.55 0.1 undecidable manual Pg 146 89.3439 -0.303 82
IV.FDMO.HHE. 2010-01-31T21:21:45.53 0.1 undecidable manual Pg 343 89.4438 -0.32 82
IV.VVLD.HHZ. 2010-01-31T21:21:45.64 0.3 undecidable manual Sg 159 47.3193 -0.209 68
IV.GUMA.HHZ. 2010-01-31T21:21:45.62 0.1 undecidable manual Pg 356 88.4448 -0.083 86
IV.VCEL.EHZ. 2010-01-31T21:21:44.14 0.3 undecidable manual Sg 68 37.5291 0.918 55
IV.GIUL.HHZ. 2010-01-31T21:21:44.34 0.6 undecidable manual Pg 190 79.8645 -0.035 44
IV.RMP.HHZ. 2010-01-31T21:21:44.06 0.3 undecidable manual Pg 230 77.6667 0.02 67
IV.TERO.HHZ. 2010-01-31T21:21:44.16 0.6 undecidable manual Sg 21 42.2244 -0.336 45
IV.TRTR.HHZ. 2010-01-31T21:21:44.47 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHZ. 2010-01-31T21:21:44.11 0.3 undecidable manual Pg 299 78.2661 -0.032 67
IV.SMA1.EHE. 2010-01-31T21:21:44.59 0.6 undecidable manual Sg 351 40.7259 0.496 43
IV.OFFI.HHZ. 2010-01-31T21:21:44.35 0.1 undecidable manual Pg 16 77.1672 0.381 83
IV.CAFR.HHZ. 2010-01-31T21:21:44.06 0.1 undecidable manual Pg 93 76.5678 0.195 86
IV.ACER.HHN. 2010-01-31T21:21:42.31 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHN. 2010-01-31T21:21:42.15 0.1 undecidable manual Pg 339 67.4769 -0.319 86
IV.SDI.SHZ. 2010-01-31T21:21:42.67 0.1 undecidable manual Pg 152 69.8745 -0.174 88
IV.LPEL.HHZ. 2010-01-31T21:21:42.20 0.1 undecidable manual Pg 111 67.6767 -0.294 86
IV.CAMP.HHN. 2010-01-31T21:21:41.27 0.3 undecidable manual Sg 359 29.748 0.125 72
IV.MTCE.HHZ. 2010-01-31T21:21:41.64 0.1 undecidable manual Pg 244 61.7937 0.047 92
IV.MNS.HHZ. 2010-01-31T21:21:41.26 0.1 undecidable manual Pg 282 61.6938 -0.328 86
IV.POFI.HHN. 2010-01-31T21:21:41.92 0.3 undecidable manual Pg 158 65.7897 -0.283 65
IV.MA9.HHZ. 2010-01-31T21:21:40.86 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHN. 2010-01-31T21:21:40.26 0.1 undecidable manual Pg 189 53.2023 -0.016 94
IV.FIAM.HHN. 2010-01-31T21:21:39.81 0.3 undecidable manual Sg 270 24.5532 0.088 73
IV.VVLD.HHZ. 2010-01-31T21:21:39.19 0.1 undecidable manual Pg 159 47.3193 -0.181 91
IV.INTR.HHZ. 2010-01-31T21:21:39.36 0.1 undecidable manual Pg 125 49.2174 -0.295 89
IV.SMA1.EHE. 2010-01-31T21:21:37.77 0.1 undecidable manual Pg 351 40.7259 -0.584 84
IV.VCEL.EHZ. 2010-01-31T21:21:37.33 0.1 undecidable manual Pg 68 37.5291 -0.524 86
IV.TERO.HHZ. 2010-01-31T21:21:37.61 0.1 undecidable manual Pg 21 42.2244 -0.976 71
IV.T0104.HHZ. 2010-01-31T21:21:36.00 0.1 undecidable manual Sg 328 12.0768 0.047 100
IV.CAMP.HHN. 2010-01-31T21:21:36.07 0.1 undecidable manual Pg 359 29.748 -0.584 85
IV.FAGN.HHZ. 2010-01-31T21:21:36.23 0.3 undecidable manual Sg 91 13.6752 -0.179 73
IV.T0110.HLN. 2010-01-31T21:21:36.45 0.1 undecidable manual Pg 99 30.1476 -0.262 93
MN.AQU.HHZ. 2010-01-31T21:21:35.41 0.1 undecidable manual Sg 353 9.5793 0.078 100
IV.FIAM.HHN. 2010-01-31T21:21:35.97 0.1 undecidable manual Pg 270 24.5532 0.136 96
IV.FAGN.HHZ. 2010-01-31T21:21:33.96 0.1 undecidable manual Pg 91 13.6752 0.044 100
MN.AQU.HHZ. 2010-01-31T21:21:33.48 0.1 undecidable manual Pg 353 9.5793 0.182 98
IV.T0104.HHZ. 2010-01-31T21:21:33.89 0.1 undecidable manual Pg 328 12.0768 0.236 96
MN.VSL.HHZ. 2010-01-31T21:21:24.57 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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