Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 24-01-2016 and time 23:40:50 (Italy) in region 4 km N Monterotondo Marittimo (GR)

A magnitude ML 2.1 earthquake occured in region: 4 km N Monterotondo Marittimo (GR), on

  • 24-01-2016 22:40:50 (UTC)
  • 24-01-2016 23:40:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1830, 10.8580 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
Monterotondo Marittimo GR 4 1371 1371
Castelnuovo di Val di Cecina PI 5 2231 3602
Monteverdi Marittimo PI 12 758 4360
Pomarance PI 13 5897 10257
Montieri GR 14 1204 11461
Massa Marittima GR 15 8375 19836
Radicondoli SI 17 914 20750
Sassetta LI 18 514 21264
Suvereto LI 18 3072 24336
Chiusdino SI 19 1903 26239

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Siena (53903 inhabitants)
51 Km NW of Grosseto (82087 inhabitants)
61 Km SE of Livorno (159219 inhabitants)
69 Km SW of Scandicci (50609 inhabitants)
70 Km SE of Pisa (89158 inhabitants)
73 Km SW of Firenze (382808 inhabitants)
79 Km SE of Lucca (89046 inhabitants)
80 Km S of Prato (191150 inhabitants)
84 Km S of Pistoia (90315 inhabitants)
89 Km W of Arezzo (99543 inhabitants)
91 Km SE of Viareggio (62467 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 2.1 2016-01-24
22:40:50		 43.1827 10.8578 7 2016-05-17
13:16:22		 Bollettino Sismico Italiano INGV 23449451
Reviewed
Rev100 		ML 2.1 2016-01-24
22:40:50		 43.1752 10.864 7 2016-01-24
22:52:43		 Sala Sismica INGV-Roma 23226321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-01-24 22:40:50 ± 0.12
Latitude 43.1827 ± 0.0045
Longitude 10.8578 ± 0.0074
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 23449451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 620
Semi-minor axis of confidence ellipse (meter) 334
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.14394
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 19
Type of magnitude ML
Reference to an origin 23449451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-02-10 09:48:18

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 19
Type of magnitude ML
Reference to an origin 23226321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-01-24 22:52:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMUR.HNZ. 2016-01-24T22:41:41.99 3.0 undecidable manual S 0.12 0
IV.CRE.HHZ. 2016-01-24T22:41:21.77 0.6 undecidable manual S 61 100.5216 50 0.71 36
IV.ASQU.HHE. 2016-01-24T22:41:21.89 0.6 undecidable manual S 47 101.3208 50 0.64 37
IV.MCIV.HHZ. 2016-01-24T22:41:16.09 0.3 undecidable manual S 124 80.1642 50 0.49 61
IV.GROG.HHZ. 2016-01-24T22:41:16.65 0.3 undecidable manual S 289 82.5507 50 0.4 62
GU.MAIM.HHZ. 2016-01-24T22:41:16.48 0.6 undecidable manual S 340 86.3469 50 -0.79 36
IV.ATCC.EHZ. 2016-01-24T22:41:14.38 3.0 positive manual P -1.12 0
IV.PARC.HHZ. 2016-01-24T22:41:12.05 0.6 undecidable manual P 65 122.6883 50 0.37 39
IV.PLMA.HHZ. 2016-01-24T22:41:12.16 0.6 undecidable manual P 320 125.5743 50 0.04 41
IV.ATVO.HHZ. 2016-01-24T22:41:12.89 0.6 undecidable manual P 79 126.9729 50 0.55 36
IV.CRMI.HNN. 2016-01-24T22:41:12.17 0.3 undecidable manual S 8 68.6757 50 -0.38 64
IV.PII.HHZ. 2016-01-24T22:41:11.39 0.3 undecidable manual S 336 65.5899 50 -0.33 65
IV.LMD.HHZ. 2016-01-24T22:41:11.87 0.6 undecidable manual P 34 120.3906 50 0.54 37
GU.EQUI.HHN. 2016-01-24T22:41:11.95 0.3 undecidable manual P 333 122.8881 50 0.25 59
IV.ARCI.HHZ. 2016-01-24T22:41:10.34 0.3 undecidable manual S 126 62.0934 50 -0.44 64
IV.FNVD.HHZ. 2016-01-24T22:41:10.54 0.6 undecidable manual P 11 111.2997 50 0.61 37
IV.ATMI.HHZ. 2016-01-24T22:41:10.45 0.6 undecidable manual P 81 115.1958 50 -0.06 42
MN.VLC.HHZ. 2016-01-24T22:41:09.98 0.6 undecidable manual P 341 114.7962 50 -0.48 38
IV.CRE.HHZ. 2016-01-24T22:41:09.15 0.3 undecidable manual P 61 100.5216 50 0.88 50
IV.MGAB.HHZ. 2016-01-24T22:41:09.63 0.6 undecidable manual P 106 106.0161 50 0.53 38
IV.BDI.HNZ. 2016-01-24T22:41:08.89 0.6 undecidable manual P 348 99.9222 50 0.73 36
IV.ASQU.HHE. 2016-01-24T22:41:08.96 0.3 undecidable manual P 47 101.3208 50 0.58 57
GU.CARD.HHZ. 2016-01-24T22:41:07.93 0.6 undecidable manual P 342 98.3238 50 0.01 44
IV.MPPT.EHZ. 2016-01-24T22:41:06.54 0.3 undecidable manual P 12 87.9453 50 0.21 64
IV.CAFI.HHZ. 2016-01-24T22:41:06.96 0.1 undecidable manual P 79 91.0422 50 0.17 86
IV.OSSC.HHZ. 2016-01-24T22:41:06.80 0.3 undecidable manual S 39 49.1175 50 -0.52 64
IV.CASP.HHZ. 2016-01-24T22:41:05.06 0.3 undecidable manual S 179 43.4232 50 -0.76 59
GU.MAIM.HHZ. 2016-01-24T22:41:05.83 0.1 undecidable manual P 340 86.3469 50 -0.25 85
IV.MCIV.HHZ. 2016-01-24T22:41:05.25 0.1 undecidable manual P 124 80.1642 50 0.13 88
IV.GROG.HHZ. 2016-01-24T22:41:05.86 0.3 undecidable manual P 289 82.5507 50 0.37 63
IV.CELB.HHZ. 2016-01-24T22:41:04.05 0.1 undecidable manual P 228 71.373 50 0.27 87
IV.CRMI.HNN. 2016-01-24T22:41:03.28 0.1 undecidable manual P 8 68.6757 50 -0.08 91
IV.ARCI.HHZ. 2016-01-24T22:41:02.24 0.1 undecidable manual P 126 62.0934 50 -0.09 92
IV.PII.HHZ. 2016-01-24T22:41:02.56 0.1 undecidable manual P 336 65.5899 50 -0.31 88
IV.OSSC.HHZ. 2016-01-24T22:40:59.96 0.1 negative manual P 39 49.1175 50 -0.37 89
IV.CASP.HHZ. 2016-01-24T22:40:59.08 0.1 undecidable manual P 179 43.4232 50 -0.39 90
IV.CSNT.HHZ. 2016-01-24T22:40:59.64 0.1 undecidable manual P 47 47.5191 50 -0.45 88
IV.FROS.HHZ. 2016-01-24T22:40:59.02 0.3 undecidable manual S 83 24.3534 105 -0.52 67
IV.FROS.HHZ. 2016-01-24T22:40:55.71 0.1 undecidable manual P 83 24.3534 105 -0.13 98
IV.TRIF.HHZ. 2016-01-24T22:40:54.45 0.3 undecidable manual S 154 8.3805 129 -0.05 77
IV.TRIF.HHZ. 2016-01-24T22:40:53.09 0.1 positive manual P 154 8.3805 129 0.16 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARCI.HHE. ML:2.3 0.000373 1.32 AML other m 2016-01-24T22:41:10.85
IV.ARCI.HHN. ML:2.2 0.00032950000000000004 0.34 AML other m 2016-01-24T22:41:11.23
IV.ATCC.EHE. ML:2.2 0.0000842 0.52 AML other m 2016-01-24T22:41:41.54
IV.ATCC.EHN. ML:2.0 0.00005835 0.78 AML other m 2016-01-24T22:41:44.49
IV.ATMI.HHE. ML:2.3 0.00014749999999999998 1.24 AML other m 2016-01-24T22:41:33.78
IV.ATMI.HHN. ML:2.3 0.0001475 0.44 AML other m 2016-01-24T22:41:35.74
IV.ATVO.HHN. ML:1.9 0.00004855 1.24 AML other m 2016-01-24T22:41:34.71
IV.ATVO.HHE. ML:1.9 0.000050199999999999994 0.86 AML other m 2016-01-24T22:41:33.87
IV.CAFI.HHN. ML:1.7 0.00006165 0.62 AML other m 2016-01-24T22:41:12.59
IV.CAFI.HHE. ML:2.0 0.0001115 0.92 AML other m 2016-01-24T22:41:12.99
IV.CASP.HHN. ML:2.3 0.000668 0.8 AML other m 2016-01-24T22:41:06.23
IV.CASP.HHE. ML:2.2 0.0005629999999999999 1.2 AML other m 2016-01-24T22:41:17.52
IV.CELB.HHE. ML:2.2 0.000256 0.08 AML other m 2016-01-24T22:41:16.25
IV.CELB.HHN. ML:2.0 0.0001735 1.44 AML other m 2016-01-24T22:41:16.38
IV.CRE.HHE. ML:1.9 0.00007655 1.14 AML other m 2016-01-24T22:41:24.93
IV.CRE.HHN. ML:2.1 0.0001139 1.26 AML other m 2016-01-24T22:41:29.80
IV.CSNT.HHN. ML:2.0 0.000309 1.02 AML other m 2016-01-24T22:41:08.82
IV.CSNT.HHE. ML:2.0 0.00028700000000000004 0.48 AML other m 2016-01-24T22:41:06.56
IV.FROS.HHE. ML:2.8 0.00395 0.36 AML other m 2016-01-24T22:40:59.67
IV.FROS.HHN. ML:2.8 0.004144999999999999 0.26 AML other m 2016-01-24T22:41:01.75
IV.GROG.HHN. ML:2.1 0.00016299999999999998 0.98 AML other m 2016-01-24T22:41:17.78
IV.GROG.HHE. ML:2.2 0.00022250000000000001 1.58 AML other m 2016-01-24T22:41:19.38
IV.LMD.HHE. ML:1.9 0.00006214999999999999 1.18 AML other m 2016-01-24T22:41:33.99
IV.LMD.HHN. ML:1.8 0.000044300000000000006 1.34 AML other m 2016-01-24T22:41:31.37
IV.MCIV.HHE. ML:2.3 0.00027600000000000004 0.24 AML other m 2016-01-24T22:41:07.29
IV.MCIV.HHN. ML:2.4 0.0003345 0.28 AML other m 2016-01-24T22:41:17.56
IV.MGAB.HHN. ML:1.8 0.00006145 1.22 AML other m 2016-01-24T22:41:27.42
IV.MGAB.HHE. ML:2.0 0.0000775 1.32 AML other m 2016-01-24T22:41:31.23
IV.OSSC.HHE. ML:2.3 0.000583 0.26 AML other m 2016-01-24T22:41:07.59
IV.OSSC.HHN. ML:2.4 0.0006439999999999999 1.54 AML other m 2016-01-24T22:41:07.25
IV.PARC.HHE. ML:1.8 0.00004205 1.34 AML other m 2016-01-24T22:41:19.53
IV.PARC.HHN. ML:1.8 0.000039 0.52 AML other m 2016-01-24T22:41:36.15
IV.PII.HHN. ML:2.5 0.0005925 0.32 AML other m 2016-01-24T22:41:12.95
IV.PII.HHE. ML:2.4 0.000528 0.46 AML other m 2016-01-24T22:41:13.81
IV.TRIF.HHN. ML:3.1 0.024549999999999995 0.94 AML other m 2016-01-24T22:40:57.07
IV.TRIF.HHE. ML:3.1 0.0205 1 AML other m 2016-01-24T22:40:57.07
MN.VLC.HHN. ML:1.8 0.000047 0.82 AML other m 2016-01-24T22:41:29.81
MN.VLC.HHE. ML:1.8 0.00005025 1.16 AML other m 2016-01-24T22:41:39.29
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