Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 23-01-2015 and time 08:57:20 (Italy) in region 2 km SE Camugnano (BO)

A magnitude ML 2.1 earthquake occured in region: 2 km SE Camugnano (BO), on

  • 23-01-2015 07:57:20 (UTC)
  • 23-01-2015 08:57:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1580, 11.1000 at 8 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
Camugnano BO 2 1885 1885
Castiglione dei Pepoli BO 5 5648 7533
Castel di Casio BO 5 3448 10981
Alto Reno Terme BO 10 6960 17941
Sambuca Pistoiese PT 10 1626 19567
Grizzana Morandi BO 12 3916 23483
Vernio PO 12 6060 29543
San Benedetto Val di Sambro BO 13 4315 33858
Gaggio Montano BO 14 4878 38736
Vergato BO 14 7639 46375
Cantagallo PO 14 3105 49480
Castel d'Aiano BO 16 1906 51386
Lizzano in Belvedere BO 16 2212 53598
Montese MO 18 3353 56951
Monghidoro BO 19 3749 60700
Monzuno BO 19 6328 67028

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Pistoia (90315 inhabitants)
31 Km N of Prato (191150 inhabitants)
42 Km SW of Bologna (386663 inhabitants)
45 Km N of Scandicci (50609 inhabitants)
45 Km N of Firenze (382808 inhabitants)
54 Km W of Imola (69797 inhabitants)
56 Km S of Modena (184973 inhabitants)
59 Km NE of Lucca (89046 inhabitants)
64 Km W of Faenza (58541 inhabitants)
71 Km SE of Reggio nell'Emilia (171345 inhabitants)
72 Km S of Carpi (70699 inhabitants)
74 Km NE of Pisa (89158 inhabitants)
75 Km E of Viareggio (62467 inhabitants)
75 Km W of Forlì (117913 inhabitants)
78 Km E of Massa (69479 inhabitants)
81 Km E of Carrara (63133 inhabitants)
86 Km SW of Ferrara (133155 inhabitants)
91 Km W of Cesena (96758 inhabitants)
92 Km W of Ravenna (159116 inhabitants)
92 Km NE of Livorno (159219 inhabitants)
94 Km SE of Parma (192836 inhabitants)
95 Km N of Siena (53903 inhabitants)
99 Km NW of Arezzo (99543 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 2015-01-23
07:57:20		 44.1577 11.1005 8 2015-10-19
09:26:59		 Bollettino Sismico Italiano INGV 21397561
Reviewed
Rev100 		ML 2.1 2015-01-23
07:57:21		 44.1292 11.1038 6 2015-01-23
08:10:57		 Sala Sismica INGV-Roma 16679991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-01-23 07:57:20 ± 0.13
Latitude 44.1577 ± 0.0099
Longitude 11.1005 ± 0.0113
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 21397561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1169
Semi-minor axis of confidence ellipse (meter) 580
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 325
Circular confidence region, given by single value of horizontal uncertainty (meter) 1170.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.59265
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 21397561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-09-15 13:54:46

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 16679991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-01-23 08:10:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRIS.HHZ. 2015-01-23T07:57:38.85 0.6 undecidable manual S 82 53.502 50 0.54 41
GU.MAIM.HHZ. 2015-01-23T07:57:38.77 0.6 undecidable manual S 241 55.5999 50 -0.09 45
IV.SFI.EHZ. 2015-01-23T07:57:32.76 0.3 undecidable manual P 115 65.7897 50 -0.1 66
GU.MAIM.HHZ. 2015-01-23T07:57:31.84 0.3 undecidable manual P 241 55.5999 50 0.56 60
GU.POPM.HHZ. 2015-01-23T07:57:31.69 0.6 undecidable manual S 246 30.0477 105 -0.06 47
IV.RUFI.EHZ. 2015-01-23T07:57:30.92 0.3 undecidable manual P 137 48.2184 50 0.77 56
IV.BRIS.HHZ. 2015-01-23T07:57:30.23 0.1 undecidable manual P 82 53.502 50 -0.73 75
IV.LMD.HHZ. 2015-01-23T07:57:29.78 1.0 undecidable manual P 100 49.1175 50 -0.51 21
GU.POPM.HHZ. 2015-01-23T07:57:27.02 0.3 undecidable manual P 246 30.0477 105 -0.16 70
IV.MTCR.EHZ. 2015-01-23T07:57:27.36 0.3 undecidable manual S 209 16.3725 117 0.08 73
IV.ZCCA.HHZ. 2015-01-23T07:57:25.92 0.1 undecidable manual P 335 23.5542 109 -0.02 97
IV.PTF.SHZ. 2015-01-23T07:57:25.11 0.3 undecidable manual P 186 22.0668 110 -0.53 65
IV.MTCR.EHZ. 2015-01-23T07:57:24.62 0.1 undecidable manual P 209 16.3725 117 0.02 98
IV.FNVD.HHZ. 2015-01-23T07:57:24.19 0.3 undecidable manual S 58 2.0979 166 0.32 71
IV.FNVD.HHZ. 2015-01-23T07:57:22.60 0.1 undecidable manual P 58 2.0979 166 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHN. ML:2.4 0.0006869999999999999 0.48 AML other m 2015-01-23T07:57:38.99
IV.BRIS.HHE. ML:2.1 0.00028149999999999996 0.66 AML other m 2015-01-23T07:57:43.23
IV.LMD.HHN. ML:2.0 0.00026000000000000003 1.06 AML other m 2015-01-23T07:57:39.93
IV.LMD.HHE. ML:1.9 0.000224 1.36 AML other m 2015-01-23T07:57:37.36
GU.POPM.HHE. ML:2.6 0.002125 1.22 AML other m 2015-01-23T07:57:31.89
GU.POPM.HHN. ML:2.8 0.0029249999999999996 0.2 AML other m 2015-01-23T07:57:32.41
IV.SFI.EHN. ML:2.3 0.00033800000000000003 0.68 AML other m 2015-01-23T07:57:43.33
IV.SFI.EHE. ML:2.0 0.0002065 1.44 AML other m 2015-01-23T07:57:40.84
IV.ZCCA.HNE. ML:2.0 0.0006770000000000001 1.46 AML other m 2015-01-23T07:57:39.67
IV.ZCCA.HHN. ML:1.9 0.000574 0.86 AML other m 2015-01-23T07:57:39.39
IV.ZCCA.HNN. ML:1.9 0.0005745 0.52 AML other m 2015-01-23T07:57:39.38
IV.ZCCA.HHE. ML:2.0 0.0007295 1.46 AML other m 2015-01-23T07:57:39.66
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