Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 26-02-2018 and time 09:04:56 (Italy) in region 3 km S Bolognola (MC)

A magnitude ML 2.2 earthquake occured in region: 3 km S Bolognola (MC), on

  • 26-02-2018 08:04:56 (UTC)
  • 26-02-2018 09:04:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9640, 13.2260 at 9 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
Bolognola MC 4 142 142
Ussita MC 7 444 586
Acquacanina MC 9 121 707
Castelsantangelo sul Nera MC 10 281 988
Montefortino FM 10 1178 2166
Fiastra MC 10 559 2725
Sarnano MC 10 3264 5989
Amandola FM 11 3629 9618
Montemonaco AP 11 604 10222
Visso MC 12 1107 11329
Fiordimonte MC 14 202 11531
Gualdo MC 15 815 12346
Comunanza AP 15 3166 15512
Pievebovigliana MC 16 866 16378
Montegallo AP 16 523 16901
Cessapalombo MC 16 512 17413
Pieve Torina MC 17 1458 18871
San Ginesio MC 18 3498 22369
Preci PG 18 724 23093
Monte Cavallo MC 19 145 23238
Smerillo FM 19 365 23603
Camporotondo di Fiastrone MC 19 563 24166
Monte San Martino MC 19 765 24931
Penna San Giovanni MC 19 1108 26039
Montefalcone Appennino FM 19 424 26463
Caldarola MC 20 1823 28286
Muccia MC 20 915 29201

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
65 Km NE of Terni (111501 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
98 Km NW of Pescara (121014 inhabitants)
99 Km S of Fano (60888 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 2.2 2018-02-26
08:04:56		 42.9642 13.2258 9 2019-04-24
14:49:47		 Bollettino Sismico Italiano INGV 65536221
Reviewed
Rev100 		ML 2.2 2018-02-26
08:04:56		 42.9647 13.2232 9 2018-02-26
08:11:02		 Sala Sismica INGV-Roma 54169951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-26 08:04:56 ± 0.08
Latitude 42.9642 ± 0.0045
Longitude 13.2258 ± 0.0061
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 65536221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 530
Semi-minor axis of confidence ellipse (meter) 86
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.43977
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.4
Num. used stations 25
Type of magnitude ML
Reference to an origin 65536221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-02-14 11:07:41

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 54169951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-26 08:11:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHN. 2018-02-26T08:05:12.80 0.6 undecidable manual S 141 48.8178 50 0.37 44
IV.LNSS.HHZ. 2018-02-26T08:05:11.29 0.6 undecidable manual S 201 42.8238 50 0.45 44
IV.SNTG.HHZ. 2018-02-26T08:05:10.27 0.1 undecidable manual S 324 39.627 50 0.28 91
IV.SMA1.EHN. 2018-02-26T08:05:09.46 0.6 undecidable manual S 166 38.0286 50 -0.11 47
IV.CESI.HHZ. 2018-02-26T08:05:06.60 0.1 undecidable manual S 280 26.4513 109 0.36 91
IV.TERO.HHN. 2018-02-26T08:05:05.46 0.1 undecidable manual P 141 48.8178 50 -0.25 90
IV.T1214.EHZ. 2018-02-26T08:05:05.86 0.3 undecidable manual S 0.81 60
IV.PF6.EHZ. 2018-02-26T08:05:04.19 0.3 undecidable manual S 352 19.4694 115 0.21 72
IV.OFFI.HHE. 2018-02-26T08:05:04.88 0.3 undecidable manual P 95 37.5291 50 0.92 55
IV.MF5.EHZ. 2018-02-26T08:05:04.68 0.1 undecidable manual S 82 19.1697 116 0.79 80
IV.LNSS.HHZ. 2018-02-26T08:05:04.59 0.1 undecidable manual P 201 42.8238 50 -0.2 92
IV.SMA1.EHN. 2018-02-26T08:05:03.60 0.1 undecidable manual P 166 38.0286 50 -0.46 88
IV.NRCA.HNZ. 2018-02-26T08:05:03.59 0.3 undecidable manual S 212 17.0718 118 0.34 70
IV.SNTG.HHZ. 2018-02-26T08:05:03.83 0.1 undecidable manual P 324 39.627 50 -0.47 87
IV.FEMA.HNE. 2018-02-26T08:05:02.77 0.6 undecidable manual S 269 14.2746 123 0.36 47
IV.GUMA.HNN. 2018-02-26T08:05:02.51 0.3 undecidable manual S 39 14.0748 123 0.16 73
IV.T1214.EHZ. 2018-02-26T08:05:01.29 0.1 undecidable manual P -0.17 97
IV.CESI.HHZ. 2018-02-26T08:05:01.96 0.3 negative manual P 280 26.4513 109 -0.17 71
IV.MMO1.EHZ. 2018-02-26T08:05:01.10 0.3 undecidable manual S 131 10.878 130 -0.37 70
IV.MNTP.HNZ. 2018-02-26T08:05:01.68 0.3 undecidable manual P 46 27.5502 108 -0.66 62
IV.MF5.EHZ. 2018-02-26T08:05:00.97 0.3 positive manual P 82 19.1697 116 0.19 72
IV.FEMA.HNE. 2018-02-26T08:05:00.09 0.3 undecidable manual P 269 14.2746 123 0.17 73
IV.NRCA.HNZ. 2018-02-26T08:05:00.33 0.1 undecidable manual P 212 17.0718 118 -0.08 99
IV.MC2.EHZ. 2018-02-26T08:05:00.13 0.1 undecidable manual S 207 6.5934 144 -0.31 96
IV.PF6.EHZ. 2018-02-26T08:05:00.40 0.1 undecidable manual P 352 19.4694 115 -0.43 91
IV.MMO1.EHZ. 2018-02-26T08:04:59.08 0.1 undecidable manual P 131 10.878 130 -0.3 95
IV.GUMA.HNN. 2018-02-26T08:04:59.85 0.1 undecidable manual P 39 14.0748 123 -0.04 100
IV.MC2.EHZ. 2018-02-26T08:04:58.56 0.1 positive manual P 207 6.5934 144 -0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HNN. ML:2.7 0.005580417 0.2944 AML other m 2018-02-26T08:05:05.07
IV.GUMA.HHE. ML:2.8 0.0062699315 0.2816 AML other m 2018-02-26T08:05:04.92
IV.GUMA.HHN. ML:2.8 0.006568795 0.4032 AML other m 2018-02-26T08:05:04.37
IV.GUMA.HNE. ML:2.7 0.005905259499999999 0.4288 AML other m 2018-02-26T08:05:04.14
IV.NRCA.HNE. ML:2.5 0.0028193535 0.1408 AML other m 2018-02-26T08:05:04.53
IV.NRCA.HNN. ML:2.4 0.001991395 0.16 AML other m 2018-02-26T08:05:05.85
IV.NRCA.HHN. ML:2.4 0.002085585 0.16 AML other m 2018-02-26T08:05:05.85
IV.NRCA.HHE. ML:2.5 0.0029478415 0.1408 AML other m 2018-02-26T08:05:04.60
IV.PF6.EHE. ML:1.9 0.00064566585 0.4032 AML other m 2018-02-26T08:05:07.42
IV.PF6.EHN. ML:1.4 0.00020991779 0.2176 AML other m 2018-02-26T08:05:07.86
IV.MF5.EHE. ML:2.5 0.0023496295 1.1008 AML other m 2018-02-26T08:05:09.96
IV.MF5.EHN. ML:2.2 0.00132671795 0.4416 AML other m 2018-02-26T08:05:05.24
IV.CESI.HHN. ML:2.3 0.00107235735 0.2176 AML other m 2018-02-26T08:05:08.05
IV.CESI.HHE. ML:2.2 0.0008404123 0.4032 AML other m 2018-02-26T08:05:10.96
IV.SMA1.EHE. ML:2.0 0.0003294356 0.5184 AML other m 2018-02-26T08:05:19.92
IV.SMA1.EHN. ML:1.9 0.00028018445 0.544 AML other m 2018-02-26T08:05:09.86
IV.SNTG.HHN. ML:1.8 0.0002020814 0.2816 AML other m 2018-02-26T08:05:10.49
IV.SNTG.HNN. ML:1.8 0.00022784395 0.5952 AML other m 2018-02-26T08:05:16.62
IV.SNTG.HNE. ML:1.8 0.0002067357 0.4032 AML other m 2018-02-26T08:05:12.88
IV.SNTG.HHE. ML:1.7 0.00017326865 0.1408 AML other m 2018-02-26T08:05:11.73
IV.LNSS.HHE. ML:2.5 0.0010466322 0.2432 AML other m 2018-02-26T08:05:11.75
IV.LNSS.HHN. ML:2.3 0.00069353215 0.32 AML other m 2018-02-26T08:05:11.73
IV.TERO.HNE. ML:1.6 0.000101167215 0.3264 AML other m 2018-02-26T08:05:17.59
IV.TERO.HHN. ML:1.9 0.00021936605 0.3008 AML other m 2018-02-26T08:05:14.54
IV.TERO.HHE. ML:1.7 0.0001432863 0.4608 AML other m 2018-02-26T08:05:15.88
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