Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 20-02-2018 and time 12:33:21 (Italy) in region 1 km N Ne (GE)

A magnitude ML 2.2 earthquake occured in region: 1 km N Ne (GE), on

  • 20-02-2018 11:33:21 (UTC)
  • 20-02-2018 12:33:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3510, 9.3990 at 7 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
Ne GE 1 2259 2259
Mezzanego GE 4 1537 3796
Cogorno GE 4 5676 9472
Carasco GE 4 3733 13205
Lavagna GE 6 12791 25996
Leivi GE 6 2442 28438
Chiavari GE 7 27398 55836
San Colombano Certenoli GE 7 2683 58519
Borzonasca GE 8 2049 60568
Sestri Levante GE 9 18578 79146
Casarza Ligure GE 10 6826 85972
Zoagli GE 11 2472 88444
Maissana SP 11 616 89060
Coreglia Ligure GE 11 285 89345
Orero GE 12 565 89910
Castiglione Chiavarese GE 12 1616 91526
Rapallo GE 13 29796 121322
Lorsica GE 13 468 121790
Cicagna GE 14 2502 124292
Moneglia GE 14 2809 127101
Santa Margherita Ligure GE 15 9338 136439
Favale di Malvaro GE 16 466 136905
Portofino GE 16 420 137325
Varese Ligure SP 16 2059 139384
Moconesi GE 17 2614 141998
Deiva Marina SP 18 1392 143390
Tribogna GE 18 614 144004
Carro SP 19 545 144549
Camogli GE 19 5378 149927
Avegno GE 19 2525 152452
Rezzoaglio GE 20 995 153447
Uscio GE 20 2284 155731

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Genova (586655 inhabitants)
44 Km NW of La Spezia (93959 inhabitants)
63 Km W of Carrara (63133 inhabitants)
69 Km NW of Massa (69479 inhabitants)
73 Km E of Savona (61345 inhabitants)
81 Km SW of Piacenza (102191 inhabitants)
87 Km NW of Viareggio (62467 inhabitants)
88 Km SE of Alessandria (93943 inhabitants)
89 Km SW of Parma (192836 inhabitants)
95 Km S of Pavia (72576 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 2018-02-20
11:33:21		 44.351 9.399 7 2019-04-24
14:49:29		 Bollettino Sismico Italiano INGV 56135471
Reviewed
Rev100 		ML 2.2 2018-02-20
11:33:21		 44.3505 9.3932 6 2018-02-20
15:28:58		 Sala Sismica INGV-Roma 54045501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-20 11:33:21 ± 0.09
Latitude 44.3510 ± 0.0054
Longitude 9.3990 ± 0.0050
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 56135471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 528
Semi-minor axis of confidence ellipse (meter) 321
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 15
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) 97
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.12055
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 54045501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-20 11:47:39

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 56135471
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-04-26 15:37:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.GBOS.HHZ. 2018-02-20T11:33:57.10 0.3 undecidable manual S 265 124.3866 50 -0.76 51
GU.POPM.HHZ. 2018-02-20T11:33:55.07 0.3 undecidable manual S 107 113.1978 50 0.19 62
IV.PII.HHZ. 2018-02-20T11:33:55.30 0.6 undecidable manual S 127 113.6973 50 0.29 41
GU.RORO.HHE. 2018-02-20T11:33:54.25 0.3 undecidable manual S 256 109.2129 50 0.44 60
IV.GROG.HHZ. 2018-02-20T11:33:53.91 0.3 undecidable manual S 159 109.9122 50 -0.09 64
IV.BDI.HNZ. 2018-02-20T11:33:51.53 0.3 undecidable manual S 108 100.4217 50 0.08 66
GU.CANO.HHZ. 2018-02-20T11:33:50.12 0.3 undecidable manual S 261 93.6396 50 0.47 61
GU.MAIM.HHZ. 2018-02-20T11:33:50.61 0.3 undecidable manual S 119 99.5226 50 -0.63 57
GU.CARD.HHZ. 2018-02-20T11:33:48.74 0.3 undecidable manual S 112 93.4398 50 -0.85 53
IV.QLNO.HHE. 2018-02-20T11:33:46.99 0.3 undecidable manual S 268 83.6496 50 0.01 69
GU.SARM.EHZ. 2018-02-20T11:33:46.15 0.3 undecidable manual S 103 81.6516 50 -0.32 65
MN.VLC.HHZ. 2018-02-20T11:33:45.77 0.3 undecidable manual S 105 81.252 50 -0.58 60
GU.PCP.HHZ. 2018-02-20T11:33:43.49 0.6 undecidable manual S 288 70.8735 50 -0.08 46
GU.GBOS.HHZ. 2018-02-20T11:33:42.05 0.6 undecidable manual P 265 124.3866 50 -0.33 39
GU.POPM.HHZ. 2018-02-20T11:33:41.02 0.3 undecidable manual P 107 113.1978 50 0.36 60
IV.GROG.HHZ. 2018-02-20T11:33:40.30 0.3 undecidable manual P 159 109.9122 50 0.16 63
GU.RORO.HHE. 2018-02-20T11:33:40.23 0.3 undecidable manual P 256 109.2129 50 0.19 63
IV.PII.HHZ. 2018-02-20T11:33:40.92 0.6 undecidable manual P 127 113.6973 50 0.19 42
GU.GRAM.HHZ. 2018-02-20T11:33:39.56 0.3 undecidable manual S 73 55.1004 50 0.2 70
GU.CANO.HHZ. 2018-02-20T11:33:38.06 0.3 undecidable manual P 261 93.6396 50 0.42 62
IV.BDI.HNZ. 2018-02-20T11:33:38.90 0.3 undecidable manual P 108 100.4217 50 0.22 64
GU.MAIM.HHZ. 2018-02-20T11:33:38.65 0.3 undecidable manual P 119 99.5226 50 0.09 65
IV.BOB.HHE. 2018-02-20T11:33:37.30 0.3 undecidable manual S 5 46.4202 50 0.25 70
GU.CARD.HHZ. 2018-02-20T11:33:37.76 0.3 undecidable manual P 112 93.4398 50 0.16 65
IV.QLNO.HHE. 2018-02-20T11:33:36.69 0.3 undecidable manual P 268 83.6496 50 0.6 60
MN.VLC.HHZ. 2018-02-20T11:33:35.75 0.3 undecidable manual P 105 81.252 50 0.02 69
GU.SARM.EHZ. 2018-02-20T11:33:35.89 0.3 undecidable manual P 103 81.6516 50 0.09 68
GU.RNCA.HHE. 2018-02-20T11:33:34.14 0.3 undecidable manual S 291 37.9287 100 -0.44 68
IV.SARZ.HHZ. 2018-02-20T11:33:34.19 3.0 undecidable manual P 0.23 0
GU.PCP.HHZ. 2018-02-20T11:33:33.89 0.3 undecidable manual P 288 70.8735 50 -0.23 67
GU.GRAM.HHZ. 2018-02-20T11:33:32.11 0.3 undecidable manual P 73 55.1004 50 0.41 67
GU.GORR.HHZ. 2018-02-20T11:33:31.60 0.3 undecidable manual S 344 29.6481 103 -0.17 73
IV.BOB.HHE. 2018-02-20T11:33:30.48 0.3 undecidable manual P 5 46.4202 50 0.12 72
IV.PLMA.HHZ. 2018-02-20T11:33:30.22 0.3 undecidable manual P 133 49.2174 50 -0.58 64
GU.RNCA.HHE. 2018-02-20T11:33:28.41 0.3 undecidable manual P 291 37.9287 100 -0.53 67
GU.GORR.HHZ. 2018-02-20T11:33:27.25 0.1 positive manual P 344 29.6481 103 -0.06 100
IV.MSSA.HHZ. 2018-02-20T11:33:25.57 0.3 undecidable manual S 112 10.1787 123 0.13 77
IV.MSSA.HHZ. 2018-02-20T11:33:23.99 0.3 undecidable manual P 112 10.1787 123 0.33 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CARD.HHN. ML:0.0 0.00052838075 0.1536 AML other m 2018-02-20T11:33:52.57
GU.CARD.HHE. ML:0.0 0.00050762095 0.3584 AML other m 2018-02-20T11:33:51.88
IV.MSSA.HHE. ML:2.1 0.0021277835 0.2368 AML other m 2018-02-20T11:33:25.99
IV.MSSA.HHN. ML:2.5 0.0049117675 0.1792 AML other m 2018-02-20T11:33:25.75
GU.GORR.HHE. ML:2.2 0.0008029140000000001 0.384 AML other m 2018-02-20T11:33:33.58
GU.GORR.HHN. ML:2.1 0.00072085435 0.1792 AML other m 2018-02-20T11:33:33.02
IV.PLMA.HHE. ML:2.1 0.00035600160000000004 0.1408 AML other m 2018-02-20T11:33:38.80
IV.PLMA.HHN. ML:2.0 0.0003002325 0.1408 AML other m 2018-02-20T11:33:37.17
GU.GRAM.HHE. ML:2.2 0.0004027979 0.32 AML other m 2018-02-20T11:33:41.02
GU.GRAM.HHN. ML:2.2 0.0004107723 0.3776 AML other m 2018-02-20T11:33:47.41
GU.PCP.HHN. ML:1.9 0.000134127885 0.32 AML other m 2018-02-20T11:33:46.01
GU.PCP.HHE. ML:2.0 0.00014878775 0.32 AML other m 2018-02-20T11:33:48.07
MN.VLC.HHN. ML:1.8 0.00009372481500000001 0.3584 AML other m 2018-02-20T11:33:50.90
MN.VLC.HHE. ML:1.8 0.00009638911 0.1984 AML other m 2018-02-20T11:33:50.27
MN.VLC.HNN. ML:1.8 0.00008906617 0.3392 AML other m 2018-02-20T11:33:50.90
MN.VLC.HNE. ML:1.8 0.00007907749500000002 0.1792 AML other m 2018-02-20T11:33:50.27
GU.SARM.EHN. ML:2.3 0.00028815430000000004 0.2432 AML other m 2018-02-20T11:33:50.03
GU.SARM.EHE. ML:2.3 0.0002938595 0.3008 AML other m 2018-02-20T11:33:50.73
GU.CANO.HHE. ML:2.6 0.00043526165 0.6784 AML other m 2018-02-20T11:33:52.92
GU.CANO.HHN. ML:2.7 0.0005207446000000001 0.3392 AML other m 2018-02-20T11:33:51.94
GU.MAIM.HHE. ML:2.1 0.0001255885 0.3008 AML other m 2018-02-20T11:33:55.43
GU.MAIM.HHN. ML:2.2 0.0001694242 0.3776 AML other m 2018-02-20T11:33:54.72
IV.GROG.HHE. ML:2.1 0.000103352705 0.2432 AML other m 2018-02-20T11:33:56.22
IV.GROG.HHN. ML:2.1 0.000105657215 0.2368 AML other m 2018-02-20T11:33:58.62
IV.PII.HHE. ML:2.3 0.00015790470000000002 0.2816 AML other m 2018-02-20T11:33:57.49
IV.PII.HHN. ML:2.3 0.00015139840000000002 0.2368 AML other m 2018-02-20T11:33:59.26
GU.POPM.HHN. ML:2.6 0.00030250825000000003 0.1984 AML other m 2018-02-20T11:33:58.97
GU.POPM.HHE. ML:2.5 0.00023612290000000002 0.2624 AML other m 2018-02-20T11:33:57.47
GU.GBOS.HHN. ML:1.9 0.00006136854499999999 0.544 AML other m 2018-02-20T11:34:01.13
GU.GBOS.HHE. ML:1.8 0.00004238626 0.4352 AML other m 2018-02-20T11:34:00.66
IV.MDI.HHN. ML:2.1 0.000057667745 0.3776 AML other m 2018-02-20T11:34:14.21
IV.MDI.HHE. ML:2.3 0.00008569983000000001 0.3392 AML other m 2018-02-20T11:34:14.28
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