Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 27-09-2017 and time 23:00:08 (UTC) in region 2 km NE Mulazzo (MS)

A magnitude ML 1.0 earthquake occured in region: 2 km NE Mulazzo (MS), on

  • 27-09-2017 23:00:08 (UTC)
  • 28-09-2017 01:00:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3360, 9.9160 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Mulazzo MS 2 2424 2424
Filattiera MS 2 2309 4733
Pontremoli MS 5 7357 12090
Villafranca in Lunigiana MS 6 4770 16860
Bagnone MS 7 1887 18747
Tresana MS 11 2044 20791
Calice al Cornoviglio SP 12 1138 21929
Zeri MS 12 1094 23023
Licciana Nardi MS 13 4949 27972
Podenzana MS 14 2180 30152
Aulla MS 15 11263 41415
Zignago SP 15 532 41947
Rocchetta di Vara SP 16 703 42650
Bolano SP 16 7813 50463
Comano MS 18 714 51177
Brugnato SP 19 1270 52447
Monchio delle Corti PR 19 933 53380
Santo Stefano di Magra SP 19 9360 62740
Beverino SP 20 2429 65169
Follo SP 20 6337 71506
Sesta Godano SP 20 1377 72883
Borghetto di Vara SP 20 938 73821
Fivizzano MS 20 7925 81746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of La Spezia (93959 inhabitants)
32 Km NW of Carrara (63133 inhabitants)
38 Km NW of Massa (69479 inhabitants)
59 Km NW of Viareggio (62467 inhabitants)
61 Km SW of Parma (192836 inhabitants)
70 Km SW of Reggio nell'Emilia (171345 inhabitants)
72 Km NW of Lucca (89046 inhabitants)
79 Km E of Genova (586655 inhabitants)
79 Km NW of Pisa (89158 inhabitants)
82 Km S of Piacenza (102191 inhabitants)
87 Km W of Modena (184973 inhabitants)
89 Km S of Cremona (71901 inhabitants)
92 Km SW of Carpi (70699 inhabitants)
92 Km W of Pistoia (90315 inhabitants)
93 Km NW of Livorno (159219 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
Reviewed
Rev100 		ML 1.0 2017-09-27
23:00:08		 44.3357 9.9158 9 2017-09-27
23:05:09		 Sala Sismica INGV-Roma 50504351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-09-27 23:00:08 ± 0.11
Latitude 44.3357 ± 0.0054
Longitude 9.9158 ± 0.0088
Depth (km) 9 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 50504351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 680
Semi-minor axis of confidence ellipse (meter) 570
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 680.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28868
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 50504351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-09-27 23:05:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.ZOU2.HHZ. 2017-09-27T23:01:21.27 3.0 undecidable manual Sg 8.21 0
IV.OSSC.HHZ. 2017-09-27T23:00:53.36 3.0 undecidable manual Sg 3.12 0
IV.NARO.HHZ. 2017-09-27T23:00:23.58 3.0 undecidable manual Pn -5.81 0
IV.MSSA.HHZ. 2017-09-27T23:00:20.04 0.1 undecidable manual S 266 31.746 50 -0.14 99
IV.PLMA.HHZ. 2017-09-27T23:00:19.92 0.1 undecidable manual S 189 32.0457 50 -0.36 94
GU.EQUI.HHZ. 2017-09-27T23:00:18.66 0.3 undecidable manual S 135 26.6511 109 -0.02 77
GU.GRAM.HHZ. 2017-09-27T23:00:16.59 0.1 undecidable manual S 34 20.9679 114 -0.25 98
IV.PLMA.HHZ. 2017-09-27T23:00:15.74 0.1 undecidable manual P 189 32.0457 50 0.28 96
IV.MSSA.HHZ. 2017-09-27T23:00:15.68 0.3 undecidable manual P 266 31.746 50 0.27 72
GU.EQUI.HHZ. 2017-09-27T23:00:14.69 0.3 undecidable manual P 135 26.6511 109 0.15 75
IV.LEOD.HNZ. 2017-09-27T23:00:14.28 3.0 negative manual P -0.3 0
GU.GRAM.HHZ. 2017-09-27T23:00:13.66 0.1 positive manual P 34 20.9679 114 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GRAM.HHE. ML:1.3 0.00015150000000000002 0.74 AML other m 2017-09-27T23:00:17.88
GU.GRAM.HHN. ML:1.3 0.0001495 1.4 AML other m 2017-09-27T23:00:18.96
IV.MSSA.HHN. ML:0.7 0.0000234 1.2 AML other m 2017-09-27T23:00:20.99
IV.MSSA.HHE. ML:0.5 0.000015275000000000002 0.6 AML other m 2017-09-27T23:00:23.19
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