Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 21-12-2015 and time 22:26:00 (Italy) in region 7 km NW Fabriano (AN)

A magnitude ML 1.8 earthquake occured in region: 7 km NW Fabriano (AN), on

  • 21-12-2015 21:26:00 (UTC)
  • 21-12-2015 22:26:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3700, 12.8380 at 46 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
Fabriano AN 7 31480 31480
Sassoferrato AN 8 7285 38765
Sigillo PG 9 2404 41169
Costacciaro PG 10 1216 42385
Fossato di Vico PG 10 2840 45225
Genga AN 10 1797 47022
Cerreto d'Esi AN 13 3817 50839
Scheggia e Pascelupo PG 14 1393 52232
Serra Sant'Abbondio PU 15 1027 53259
Esanatoglia MC 16 2034 55293
Gualdo Tadino PG 16 15208 70501
Arcevia AN 17 4612 75113
Serra San Quirico AN 17 2850 77963
Frontone PU 18 1300 79263
Matelica MC 19 9981 89244
Poggio San Vicino MC 20 246 89490
Mergo AN 20 1037 90527

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NE of Perugia (166134 inhabitants)
47 Km N of Foligno (57155 inhabitants)
55 Km S of Fano (60888 inhabitants)
61 Km S of Pesaro (94582 inhabitants)
62 Km W of Ancona (100861 inhabitants)
78 Km E of Arezzo (99543 inhabitants)
80 Km S of Rimini (147750 inhabitants)
91 Km N of Terni (111501 inhabitants)
98 Km SE of Cesena (96758 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 1.8 2015-12-21
21:26:00		 43.3697 12.838 46 2016-02-19
13:23:08		 Bollettino Sismico Italiano INGV 23501571
Reviewed
Rev100 		ML 1.8 2015-12-21
21:25:59		 43.3712 12.8397 47 2015-12-21
21:34:48		 Sala Sismica INGV-Roma 22777561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-12-21 21:26:00 ± 0.14
Latitude 43.3697 ± 0.0081
Longitude 12.8380 ± 0.0124
Depth (km) 46 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 23501571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 848
Semi-minor axis of confidence ellipse (meter) 630
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) 850.0
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 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.07824
Epicentral distance of station farthest from the epicenter (degree) 0.90292
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 23
Type of magnitude ML
Reference to an origin 23501571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-02-15 08:28:00

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 23
Type of magnitude ML
Reference to an origin 22777561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-12-21 21:34:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRE.HHZ. 2015-12-21T21:26:24.68 0.6 undecidable manual S 291 76.4679 103 0.61 39
IV.CAFI.HHZ. 2015-12-21T21:26:22.82 0.6 undecidable manual S 267 70.4739 105 0.02 46
IV.GUMA.HHZ. 2015-12-21T21:26:21.01 0.6 undecidable manual S 130 52.7028 115 1.81 23
IV.ASSB.HHZ. 2015-12-21T21:26:17.65 0.6 undecidable manual S 202 39.0276 127 0.96 37
IV.ATPI.EHZ. 2015-12-21T21:26:17.12 0.3 undecidable manual S 285 36.2415 130 0.9 57
IV.FDMO.HHZ. 2015-12-21T21:26:17.79 0.6 undecidable manual S 151 42.1245 124 0.57 44
IV.RM33.EHZ. 2015-12-21T21:26:17.47 0.3 undecidable manual P 162 100.2219 98 0.61 57
IV.NARO.HHZ. 2015-12-21T21:26:16.07 0.3 undecidable manual S 322 33.8439 133 0.25 72
IV.FSSB.HHZ. 2015-12-21T21:26:16.79 0.3 undecidable manual S 352 36.2415 130 0.58 66
IV.ATVO.HHZ. 2015-12-21T21:26:16.81 0.3 undecidable manual S 272 34.8429 132 0.83 59
IV.SACS.HHZ. 2015-12-21T21:26:16.07 0.3 undecidable manual P 233 94.8384 99 -0.12 66
IV.MPAG.EHZ. 2015-12-21T21:26:15.63 0.3 undecidable manual S 348 29.4483 138 0.47 69
IV.LNSS.HHZ. 2015-12-21T21:26:15.45 0.1 undecidable manual P 169 86.6466 100 0.26 86
IV.EL6.EHZ. 2015-12-21T21:26:15.05 0.3 undecidable manual S 102 21.7671 148 0.9 61
IV.ATCC.EHZ. 2015-12-21T21:26:15.20 0.3 undecidable manual S 218 25.9518 142 0.53 69
IV.PIEI.HHZ. 2015-12-21T21:26:15.24 0.3 undecidable manual S 307 30.5472 136 -0.08 75
IV.ATFO.HHZ. 2015-12-21T21:26:14.07 0.3 undecidable manual S 269 21.4674 148 -0.05 76
IV.CRE.HHZ. 2015-12-21T21:26:13.86 0.1 undecidable manual P 291 76.4679 103 -0.1 92
IV.CAFI.HHZ. 2015-12-21T21:26:13.01 0.1 undecidable manual P 267 70.4739 105 -0.22 91
IV.SNTG.HHZ. 2015-12-21T21:26:13.52 0.3 undecidable manual S 147 15.1737 157 0.04 77
IV.MGAB.HHZ. 2015-12-21T21:26:13.89 0.1 undecidable manual P 229 77.5668 103 -0.2 90
IV.CPGN.EHZ. 2015-12-21T21:26:13.14 0.1 undecidable manual P 319 63.3921 108 0.76 77
IV.FRON.EHZ. 2015-12-21T21:26:13.93 0.3 undecidable manual S 331 18.7701 152 0.1 77
IV.FOSV.EHZ. 2015-12-21T21:26:12.65 0.3 undecidable manual S 217 10.3785 164 -0.49 70
IV.MOMA.HHZ. 2015-12-21T21:26:12.28 0.3 undecidable manual P 199 66.7776 107 -0.5 64
IV.SSFR.HHZ. 2015-12-21T21:26:12.88 0.3 undecidable manual S 329 8.6802 166 -0.16 76
IV.PESA.HHZ. 2015-12-21T21:26:12.83 0.3 undecidable manual P 0 63.3921 108 0.44 65
IV.GUMA.HHZ. 2015-12-21T21:26:11.63 0.1 positive manual P 130 52.7028 115 0.49 88
IV.BADI.EHZ. 2015-12-21T21:26:11.25 0.1 undecidable manual P 288 50.3163 117 0.37 90
IV.ATMI.HHZ. 2015-12-21T21:26:10.57 0.1 undecidable manual P 265 46.1205 121 0.14 95
IV.ATTE.HHZ. 2015-12-21T21:26:10.04 0.1 negative manual P 244 43.5231 123 -0.11 98
IV.PE3.EHZ. 2015-12-21T21:26:10.57 0.3 undecidable manual P 323 45.4212 121 0.22 70
IV.CSP1.EHZ. 2015-12-21T21:26:10.01 0.1 undecidable manual P 136 42.7239 124 -0.06 97
IV.ATVO.HHZ. 2015-12-21T21:26:09.23 0.1 undecidable manual P 272 34.8429 132 -0.06 100
IV.ASSB.HHZ. 2015-12-21T21:26:09.61 0.1 undecidable manual P 202 39.0276 127 -0.09 98
IV.ATPI.EHZ. 2015-12-21T21:26:09.17 0.1 undecidable manual P 285 36.2415 130 -0.25 96
IV.FDMO.HHZ. 2015-12-21T21:26:09.70 0.1 undecidable manual P 151 42.1245 124 -0.3 93
IV.FSSB.HHZ. 2015-12-21T21:26:09.17 0.1 positive manual P 352 36.2415 130 -0.25 95
IV.ATCC.EHZ. 2015-12-21T21:26:08.21 0.1 undecidable manual P 218 25.9518 142 -0.32 96
IV.CING.HHZ. 2015-12-21T21:26:08.73 0.1 positive manual P 89 28.8489 139 -0.03 100
IV.PIEI.HHZ. 2015-12-21T21:26:08.32 0.1 positive manual P 307 30.5472 136 -0.59 89
IV.MPAG.EHZ. 2015-12-21T21:26:08.40 0.1 undecidable manual P 348 29.4483 138 -0.41 93
IV.EL6.EHZ. 2015-12-21T21:26:08.04 0.1 undecidable manual P 102 21.7671 148 -0.19 98
IV.NARO.HHZ. 2015-12-21T21:26:08.67 0.1 positive manual P 322 33.8439 133 -0.52 90
IV.SNTG.HHZ. 2015-12-21T21:26:07.37 0.1 positive manual P 147 15.1737 157 -0.48 93
IV.FRON.EHZ. 2015-12-21T21:26:07.52 0.1 positive manual P 331 18.7701 152 -0.52 92
IV.ATFO.HHZ. 2015-12-21T21:26:07.73 0.1 undecidable manual P 269 21.4674 148 -0.49 93
IV.SSFR.HHZ. 2015-12-21T21:26:07.03 0.1 positive manual P 329 8.6802 166 -0.56 92
IV.FOSV.EHZ. 2015-12-21T21:26:06.96 0.1 positive manual P 217 10.3785 164 -0.68 87
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:1.6 0.0000853 0.68 AML other m 2015-12-21T21:26:17.77
IV.ASSB.HHN. ML:1.7 0.0001175 0.56 AML other m 2015-12-21T21:26:18.13
IV.ATCC.EHN. ML:1.8 0.0001675 1.24 AML other m 2015-12-21T21:26:15.68
IV.ATCC.EHE. ML:1.9 0.0001965 0.28 AML other m 2015-12-21T21:26:15.75
IV.ATFO.HHN. ML:1.9 0.0002105 0.24 AML other m 2015-12-21T21:26:14.52
IV.ATFO.HHE. ML:1.8 0.00018099999999999998 0.26 AML other m 2015-12-21T21:26:15.05
IV.ATMI.HHE. ML:1.7 0.0000932 0.9 AML other m 2015-12-21T21:26:19.25
IV.ATMI.HHN. ML:1.5 0.00006615 1.56 AML other m 2015-12-21T21:26:20.71
IV.ATPI.EHN. ML:1.7 0.00010305 0.54 AML other m 2015-12-21T21:26:18.03
IV.ATPI.EHE. ML:1.8 0.000142 0.72 AML other m 2015-12-21T21:26:18.31
IV.ATTE.HHE. ML:1.4 0.0000449 1.58 AML other m 2015-12-21T21:26:19.18
IV.ATTE.HHN. ML:1.4 0.00004355000000000001 0.24 AML other m 2015-12-21T21:26:19.54
IV.ATVO.HHE. ML:1.5 0.0000727 0.36 AML other m 2015-12-21T21:26:19.82
IV.ATVO.HHN. ML:1.5 0.00007585 1.06 AML other m 2015-12-21T21:26:17.53
IV.BADI.EHN. ML:1.5 0.0000603 0.8 AML other m 2015-12-21T21:26:21.48
IV.BADI.EHE. ML:1.7 0.00007755 0.26 AML other m 2015-12-21T21:26:21.32
IV.CING.HHN. ML:1.8 0.00015050000000000003 0.34 AML other m 2015-12-21T21:26:16.77
IV.CING.HHE. ML:1.7 0.0001175 0.72 AML other m 2015-12-21T21:26:16.90
IV.FDMO.HHE. ML:1.6 0.00008269999999999999 0.14 AML other m 2015-12-21T21:26:18.80
IV.FDMO.HHN. ML:1.5 0.000059050000000000006 0.84 AML other m 2015-12-21T21:26:18.79
IV.FOSV.EHN. ML:2.0 0.000263 0.16 AML other m 2015-12-21T21:26:12.84
IV.FOSV.EHE. ML:2.0 0.000321 0.3 AML other m 2015-12-21T21:26:13.05
IV.FRON.EHE. ML:1.8 0.0001895 0.44 AML other m 2015-12-21T21:26:13.84
IV.FRON.EHN. ML:2.0 0.0002615 0.52 AML other m 2015-12-21T21:26:14.42
IV.FSSB.HHE. ML:2.5 0.0006885 0.22 AML other m 2015-12-21T21:26:17.89
IV.FSSB.HHN. ML:2.4 0.0005825 1.28 AML other m 2015-12-21T21:26:17.64
IV.GUMA.HHN. ML:2.1 0.0002185 0.3 AML other m 2015-12-21T21:26:21.44
IV.GUMA.HHE. ML:2.1 0.0002275 0.98 AML other m 2015-12-21T21:26:21.87
IV.LNSS.HHE. ML:1.6 0.0000422 1.42 AML other m 2015-12-21T21:26:28.79
IV.LNSS.HHN. ML:1.6 0.000038650000000000004 0.28 AML other m 2015-12-21T21:26:30.03
IV.MGAB.HHN. ML:1.8 0.0000691 0.22 AML other m 2015-12-21T21:26:25.42
IV.MGAB.HHE. ML:1.6 0.00004585 0.98 AML other m 2015-12-21T21:26:27.31
IV.MOMA.HHE. ML:1.6 0.00006075 0.18 AML other m 2015-12-21T21:26:25.09
IV.MOMA.HHN. ML:1.6 0.0000482 1.24 AML other m 2015-12-21T21:26:25.02
IV.MPAG.EHN. ML:1.7 0.00011324999999999999 0.36 AML other m 2015-12-21T21:26:16.04
IV.MPAG.EHE. ML:1.6 0.000107 0.3 AML other m 2015-12-21T21:26:16.61
IV.NARO.HHE. ML:2.0 0.0002495 0.22 AML other m 2015-12-21T21:26:16.39
IV.NARO.HHN. ML:1.7 0.0001245 0.76 AML other m 2015-12-21T21:26:16.26
IV.PIEI.HHN. ML:1.9 0.0002055 0.18 AML other m 2015-12-21T21:26:15.52
IV.PIEI.HHE. ML:2.2 0.00035999999999999997 0.56 AML other m 2015-12-21T21:26:15.90
IV.RM33.EHN. ML:1.5 0.00002955 0.34 AML other m 2015-12-21T21:26:32.60
IV.RM33.EHE. ML:1.5 0.000025249999999999997 1.3 AML other m 2015-12-21T21:26:39.17
IV.SNTG.HHN. ML:2.1 0.00035499999999999996 0.58 AML other m 2015-12-21T21:26:14.05
IV.SNTG.HHE. ML:2.0 0.000309 0.22 AML other m 2015-12-21T21:26:13.73
IV.SSFR.HNE. ML:2.6 0.00126 0.3 AML other m 2015-12-21T21:26:13.11
IV.SSFR.HHE. ML:2.6 0.0011549999999999998 0.32 AML other m 2015-12-21T21:26:13.11
IV.SSFR.HHN. ML:2.6 0.00123 0.74 AML other m 2015-12-21T21:26:13.00
IV.SSFR.HNN. ML:2.7 0.0015400000000000001 0.72 AML other m 2015-12-21T21:26:13.36
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