Earthquake (controlled explosion) with magnitude of ML 1.6 on date 07-02-2020 and time 10:18:33 (Italy) in region Costa Ligure centro orientale (Genova)

A magnitude ML 1.6 (controlled explosion) earthquake occured in region: Costa Ligure centro orientale (Genova), on

  • 07-02-2020 09:18:33 (UTC)
  • 07-02-2020 10:18:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.34, 8.68 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: controlled explosion.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Cogoleto GE 7 9172 9172
Arenzano GE 8 11519 20691
Varazze SV 8 13251 33942
Celle Ligure SV 11 5237 39179
Albisola Superiore SV 13 10163 49342
Mele GE 14 2725 52067
Albissola Marina SV 14 5487 57554
Savona SV 16 61345 118899
Stella SV 16 3009 121908
Urbe SV 18 700 122608
Masone GE 19 3679 126287

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Savona (61345 inhabitants)
22 Km W of Genova (586655 inhabitants)
65 Km S of Alessandria (93943 inhabitants)
73 Km SE of Asti (76202 inhabitants)
90 Km E of Cuneo (56081 inhabitants)
91 Km NE of Sanremo (54807 inhabitants)
95 Km W of La Spezia (93959 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 1.6 2020-02-07
09:18:33
44.33 8.68 0 2020-07-18
21:08:23
Bollettino Sismico Italiano INGV 77020791
Reviewed
Rev100
ML 1.8 2020-02-07
09:18:33
44.34 8.69 3 2020-02-07
09:40:56
Sala Sismica INGV-Roma 76313931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-07 09:18:33 ± 0.11
Latitude 44.33 ± 0.01
Longitude 8.68 ± 0.01
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type controlled explosion
Origin ID 77020791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1180
Semi-minor axis of confidence ellipse (meter) 580
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 333
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.20594
Epicentral distance of station farthest from the epicenter (degree) 0.97037
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 77020791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-11 10:52:56

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 76313931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-07 09:40:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.STV.HHN. 2020-02-07T09:18:53.62 0.1 undecidable manual P 265 0.9704 50 0.44 79
GU.ENR.HHN. 2020-02-07T09:18:52.01 0.1 undecidable manual P 264 0.9056 50 -0.06 86
FR.SAOF.HHE.00 2020-02-07T09:18:51.87 0.3 undecidable manual P 247 0.8777 50 0.27 62
IV.PLMA.HHZ. 2020-02-07T09:18:51.77 0.6 undecidable manual P 108 0.8894 50 -0.03 44
IV.IMI.HHZ. 2020-02-07T09:18:48.42 0.3 undecidable manual P 233 0.7042 50 -0.21 66
IV.BOB.HNE. 2020-02-07T09:18:48.32 0.3 undecidable manual P 51 0.6988 50 -0.22 66
GU.GBOS.HHZ. 2020-02-07T09:18:46.51 0.6 undecidable manual P 261 0.6061 50 -0.44 43
GU.ROTM.HHZ. 2020-02-07T09:18:46.17 0.1 undecidable manual P 336 0.5639 50 -0.05 93
GU.GORR.HHZ. 2020-02-07T09:18:44.68 0.3 undecidable manual P 58 0.5162 90 -0.56 63
GU.RORO.HHZ. 2020-02-07T09:18:44.16 0.1 undecidable manual P 243 0.491 90 -0.51 86
GU.CANO.HHZ. 2020-02-07T09:18:41.41 0.1 positive manual P 248 0.3399 90 0.1 96
IT.ACQ.HGZ. 2020-02-07T09:18:41.88 0.6 undecidable manual P 336 0.3795 90 -0.32 46
IV.QLNO.HHZ. 2020-02-07T09:18:39.41 0.1 positive manual P 268 0.2374 90 0.38 93
GU.RNCA.HHE. 2020-02-07T09:18:39.29 0.1 undecidable manual P 55 0.2383 90 0.23 96
IT.GNV.HGE. 2020-02-07T09:18:38.84 0.3 undecidable manual P 62 0.2059 90 0.5 68
GU.PCP.HHZ. 2020-02-07T09:18:38.76 0.1 positive manual P 336 0.2266 90 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PCP.HHN. ML:1.4 0.0001587965 0.16 AML other m 2020-02-07T09:18:42.62
GU.PCP.HHE. ML:1.6 0.00025660775 0.2816 AML other m 2020-02-07T09:18:43.40
GU.CANO.HHE. ML:1.7 0.00019514715 0.8384 AML other m 2020-02-07T09:18:48.62
GU.CANO.HHN. ML:1.6 0.0001418729 0.2368 AML other m 2020-02-07T09:18:48.65
GU.RORO.HHN. ML:1.4 5.6163715E-5 0.4416 AML other m 2020-02-07T09:18:52.85
GU.RORO.HHE. ML:1.9 0.000176128665 0.9216 AML other m 2020-02-07T09:18:54.09
IV.IMI.HHN. ML:1.7 6.7814605E-5 0.3392 AML other m 2020-02-07T09:19:02.21
IV.IMI.HHE. ML:1.4 4.0450345E-5 0.2752 AML other m 2020-02-07T09:19:03.45
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download