Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 04-01-2018 and time 21:16:28 (Italy) in region 8 km E Monterenzio (BO)

A magnitude ML 2.1 earthquake occured in region: 8 km E Monterenzio (BO), on

  • 04-01-2018 20:16:28 (UTC)
  • 04-01-2018 21:16:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3160, 11.4990 at 27 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
Monterenzio BO 8 6035 6035
Fontanelice BO 8 1943 7978
Borgo Tossignano BO 8 3288 11266
Casalfiumanese BO 10 3438 14704
Castel del Rio BO 11 1246 15950
Dozza BO 12 6652 22602
Castel San Pietro Terme BO 12 20811 43413
Casola Valsenio RA 14 2617 46030
Ozzano dell'Emilia BO 15 13596 59626
Pianoro BO 15 17460 77086
Loiano BO 15 4294 81380
Imola BO 18 69797 151177
Monghidoro BO 18 3749 154926
Riolo Terme RA 19 5720 160646
Monzuno BO 19 6328 166974
San Lazzaro di Savena BO 19 32065 199039
Castel Guelfo di Bologna BO 19 4455 203494

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km W of Imola (69797 inhabitants)
24 Km SE of Bologna (386663 inhabitants)
31 Km W of Faenza (58541 inhabitants)
44 Km W of Forlì (117913 inhabitants)
57 Km W of Ravenna (159116 inhabitants)
58 Km NE of Prato (191150 inhabitants)
58 Km SE of Modena (184973 inhabitants)
59 Km S of Ferrara (133155 inhabitants)
63 Km W of Cesena (96758 inhabitants)
63 Km NE of Pistoia (90315 inhabitants)
64 Km NE of Firenze (382808 inhabitants)
67 Km NE of Scandicci (50609 inhabitants)
71 Km SE of Carpi (70699 inhabitants)
81 Km SE of Reggio nell'Emilia (171345 inhabitants)
87 Km S of Rovigo (51867 inhabitants)
90 Km W of Rimini (147750 inhabitants)
95 Km NE of Lucca (89046 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 2018-01-04
20:16:28		 44.3165 11.4993 27 2019-04-24
14:49:25		 Bollettino Sismico Italiano INGV 55694351
Reviewed
Rev100 		ML 2.2 2018-01-04
20:16:29		 44.3078 11.5002 25 2018-01-04
20:28:15		 Sala Sismica INGV-Roma 53022551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-01-04 20:16:28 ± 0.26
Latitude 44.3165 ± 0.0108
Longitude 11.4993 ± 0.0176
Depth (km) 27 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 55694351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1442
Semi-minor axis of confidence ellipse (meter) 591
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 297
Circular confidence region, given by single value of horizontal uncertainty (meter) 1440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.05221
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 18
Type of magnitude ML
Reference to an origin 55694351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-12-10 11:31:43

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 53022551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-01-04 20:28:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMGO.HHZ. 2018-01-04T20:18:21.34 3.0 negative manual Pg 12.36 0
IV.PIPA.HHZ. 2018-01-04T20:18:05.79 3.0 positive manual Pn 4.17 0
IV.MILZ.HHZ. 2018-01-04T20:18:04.94 3.0 negative manual Pn -2.65 0
IV.MCRV.HHZ. 2018-01-04T20:17:37.39 3.0 undecidable manual Pn 0.4 0
SI.MOSI.HHZ. 2018-01-04T20:17:34.92 3.0 undecidable manual Sn -4.03 0
IV.MTMR.HNZ. 2018-01-04T20:17:33.58 3.0 undecidable manual Pn -0.89 0
MN.TRI.HHZ. 2018-01-04T20:17:27.95 3.0 undecidable manual Sn -3.13 0
IV.MMUR.HNZ. 2018-01-04T20:17:17.59 3.0 undecidable manual Sg 2.56 0
IV.EL6.EHZ. 2018-01-04T20:17:16.37 3.0 undecidable manual Sn -1.9 0
GU.CANO.HHZ. 2018-01-04T20:17:11.59 3.0 negative manual Pg 2.62 0
RF.GEPF.HHZ. 2018-01-04T20:17:08.98 3.0 positive manual Pg 3.11 0
IV.MILN.HNZ. 2018-01-04T20:17:02.20 3.0 undecidable manual Pn -1.18 0
SI.LUSI.HHZ. 2018-01-04T20:17:00.02 3.0 positive manual Pg 1.57 0
NI.POLC.HHZ. 2018-01-04T20:16:59.79 3.0 negative manual Pn -0.34 0
IV.CPGN.EHZ. 2018-01-04T20:16:57.70 3.0 undecidable manual S 0.08 0
IV.CAFI.HHZ. 2018-01-04T20:16:51.09 3.0 undecidable manual P 0.52 0
IV.TEOL.HHZ. 2018-01-04T20:16:48.02 0.1 undecidable manual P 7 116.7942 99 -0.3 78
IV.MTCR.EHZ. 2018-01-04T20:16:46.33 0.6 undecidable manual S 231 50.9157 112 0.75 39
IV.MOCL.EHZ. 2018-01-04T20:16:43.96 0.6 undecidable manual S 216 42.8238 116 0.34 44
IV.SERM.EHN. 2018-01-04T20:16:42.41 0.6 undecidable manual P 348 78.5658 103 -0.14 43
IV.LMD.HHZ. 2018-01-04T20:16:41.57 0.1 undecidable manual S 148 31.2465 125 0.62 82
IV.FNVD.HHZ. 2018-01-04T20:16:41.85 0.3 undecidable manual S 241 34.1436 122 0.26 69
IV.SEI.HHZ. 2018-01-04T20:16:40.65 0.6 undecidable manual S 201 31.1466 125 -0.28 45
IV.FIU.EHN. 2018-01-04T20:16:40.87 0.3 undecidable manual S 359 35.9418 121 -1.12 51
IV.BRIS.HHZ. 2018-01-04T20:16:39.64 0.6 undecidable manual S 116 23.5542 134 0.28 46
IV.ZCCA.HHE. 2018-01-04T20:16:38.24 0.6 undecidable manual P 275 41.625 117 1.08 33
IV.MTCR.EHZ. 2018-01-04T20:16:38.41 0.1 undecidable manual P 231 50.9157 112 -0.05 91
IV.RUFI.EHZ. 2018-01-04T20:16:38.72 0.1 undecidable manual P 179 53.1024 111 -0.06 91
Z3.A307A.HHN. 2018-01-04T20:16:37.38 0.3 undecidable manual P 353 38.5281 119 0.65 59
IV.CMPO.HNE. 2018-01-04T20:16:37.67 0.3 undecidable manual P 39 38.0286 119 1 50
IV.FNVD.HHZ. 2018-01-04T20:16:36.07 0.3 undecidable manual P 241 34.1436 122 -0.09 70
IV.FIU.EHN. 2018-01-04T20:16:36.68 0.3 undecidable manual P 359 35.9418 121 0.29 66
IV.MTRZ.HHZ. 2018-01-04T20:16:36.98 0.1 undecidable manual S 266 5.8941 166 0.04 100
IV.MOCL.EHZ. 2018-01-04T20:16:36.99 0.1 undecidable manual P 216 42.8238 116 -0.34 87
IV.SEI.HHZ. 2018-01-04T20:16:35.25 0.1 negative manual P 201 31.1466 125 -0.52 85
IV.LMD.HHZ. 2018-01-04T20:16:35.52 0.1 negative manual P 148 31.2465 125 -0.26 91
IV.BRIS.HHZ. 2018-01-04T20:16:34.68 0.1 undecidable manual P 116 23.5542 134 -0.19 94
IV.MTRZ.HHZ. 2018-01-04T20:16:32.96 0.1 positive manual P 266 5.8941 166 -0.51 90
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRZ.HHE. ML:2.4 0.001440133 0.4096 AML other m 2018-01-04T20:16:38.34
IV.MTRZ.HNE. ML:2.4 0.0013953975 0.4096 AML other m 2018-01-04T20:16:38.34
IV.MTRZ.HHN. ML:2.5 0.001981398 0.4096 AML other m 2018-01-04T20:16:38.25
IV.MTRZ.HNN. ML:2.5 0.0019359895000000003 0.4096 AML other m 2018-01-04T20:16:38.25
IV.BRIS.HHE. ML:1.5 0.00012490125 0.2944 AML other m 2018-01-04T20:16:40.53
IV.LMD.HHE. ML:2.0 0.0003518751 0.2816 AML other m 2018-01-04T20:16:41.86
IV.BRIS.HHN. ML:1.9 0.00031799605 0.2432 AML other m 2018-01-04T20:16:41.80
IV.LMD.HHN. ML:2.1 0.00041616509999999995 0.3968 AML other m 2018-01-04T20:16:42.15
IV.SEI.HHE. ML:2.4 0.00085925725 0.3328 AML other m 2018-01-04T20:16:42.15
IV.SEI.HHN. ML:2.5 0.0011644635 0.384 AML other m 2018-01-04T20:16:42.79
IV.MOCL.EHN. ML:1.8 0.0001739701 0.2816 AML other m 2018-01-04T20:16:44.81
IV.MOCL.EHE. ML:1.8 0.0001531998 0.2432 AML other m 2018-01-04T20:16:45.59
IV.RUFI.EHE. ML:1.4 0.000055386445 0.256 AML other m 2018-01-04T20:16:50.59
IV.RUFI.EHN. ML:1.4 0.000053580755000000004 0.3328 AML other m 2018-01-04T20:16:50.59
IV.TEOL.HHN. ML:2.2 0.00012373955000000001 0.4352 AML other m 2018-01-04T20:17:05.63
IV.TEOL.HHE. ML:2.6 0.0002946706 0.7808 AML other m 2018-01-04T20:17:06.09
IV.CAFI.HNE. ML:1.8 0.00004897576 0.5504 AML other m 2018-01-04T20:17:11.10
IV.CAFI.HHE. ML:1.8 0.00005135071 0.5248 AML other m 2018-01-04T20:17:10.84
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