Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 11-01-2018 and time 16:37:09 (Italy) in region 4 km NE Castelnuovo di Val di Cecina (PI)

A magnitude ML 2.1 earthquake occured in region: 4 km NE Castelnuovo di Val di Cecina (PI), on

  • 11-01-2018 15:37:09 (UTC)
  • 11-01-2018 16:37:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2320, 10.9360 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
Castelnuovo di Val di Cecina PI 4 2231 2231
Radicondoli SI 9 914 3145
Pomarance PI 9 5897 9042
Monterotondo Marittimo GR 11 1371 10413
Montieri GR 13 1204 11617
Chiusdino SI 15 1903 13520
Casole d'Elsa SI 15 3897 17417
Monteverdi Marittimo PI 19 758 18175
Volterra PI 20 10519 28694

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km W of Siena (53903 inhabitants)
54 Km N of Grosseto (82087 inhabitants)
62 Km SW of Scandicci (50609 inhabitants)
62 Km SE of Livorno (159219 inhabitants)
65 Km SW of Firenze (382808 inhabitants)
69 Km SE of Pisa (89158 inhabitants)
73 Km S of Prato (191150 inhabitants)
77 Km SE of Lucca (89046 inhabitants)
78 Km S of Pistoia (90315 inhabitants)
81 Km W of Arezzo (99543 inhabitants)
90 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 2018-01-11
15:37:09		 43.2317 10.936 7 2019-04-24
14:49:23		 Bollettino Sismico Italiano INGV 55180321
Reviewed
Rev100 		ML 2.2 2018-01-11
15:37:09		 43.2405 10.9482 4 2018-01-11
15:55:25		 Sala Sismica INGV-Roma 53141431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-01-11 15:37:09 ± 0.07
Latitude 43.2317 ± 0.0045
Longitude 10.9360 ± 0.0062
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 55180321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 453
Semi-minor axis of confidence ellipse (meter) 396
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 216
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.03332
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 63
Type of magnitude ML
Reference to an origin 55180321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-04-06 10:27:22

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 53141431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-01-11 15:55:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMGO.HHZ. 2018-01-11T15:38:34.53 3.0 negative manual Pg 6.93 0
CR.STON.BHZ. 2018-01-11T15:38:20.22 3.0 undecidable manual Pn 1.38 0
IV.SARZ.HHZ. 2018-01-11T15:38:07.35 3.0 undecidable manual Sn -8.49 0
IV.FDMO.HHZ. 2018-01-11T15:37:59.86 3.0 undecidable manual Sg 8.01 0
IV.MA9.HHZ. 2018-01-11T15:37:59.17 3.0 undecidable manual Sg 2.25 0
IV.MC2.EHZ. 2018-01-11T15:37:51.71 3.0 undecidable manual Sn -2.01 0
GU.BURY.HHZ. 2018-01-11T15:37:50.61 3.0 undecidable manual Pg 1.58 0
IV.CAPR.HNZ. 2018-01-11T15:37:50.40 3.0 undecidable manual Pn 0.14 0
IV.ZONE.HHZ. 2018-01-11T15:37:46.76 3.0 undecidable manual Pn -4.69 0
IV.FOSV.EHZ. 2018-01-11T15:37:43.43 3.0 undecidable manual Sn -3.47 0
IV.VVLD.HHZ. 2018-01-11T15:37:40.91 3.0 undecidable manual Pn -1.11 0
GU.POPM.HHZ. 2018-01-11T15:37:37.49 0.3 undecidable manual S 351 91.3419 50 0.19 64
TV.SF01.EHZ. 2018-01-11T15:37:31.44 0.3 undecidable manual S 132 68.9754 50 0.13 67
IV.T1299.HNZ. 2018-01-11T15:37:30.43 3.0 undecidable manual Pn -4.35 0
IV.PARC.HHZ. 2018-01-11T15:37:29.61 0.3 undecidable manual P 66 114.6963 50 0.44 58
IV.LMD.HHZ. 2018-01-11T15:37:29.24 0.3 undecidable manual P 33 112.3986 50 0.42 58
IV.PII.HHZ. 2018-01-11T15:37:29.46 0.3 undecidable manual S 329 63.6918 50 -0.44 64
GU.SARM.EHZ. 2018-01-11T15:37:29.67 0.3 undecidable manual P 338 113.997 50 0.6 55
IV.ARCI.HHZ. 2018-01-11T15:37:28.75 0.3 undecidable manual S 134 60.6948 50 -0.37 65
IV.CRE.HHZ. 2018-01-11T15:37:26.09 0.3 undecidable manual P 62 92.4408 50 0.35 62
IV.MAON.HHZ. 2018-01-11T15:37:26.19 0.3 undecidable manual P 170 90.5427 50 0.75 54
IV.SEI.HHZ. 2018-01-11T15:37:26.82 0.3 undecidable manual P 20 97.3248 50 0.32 61
IV.MOCL.EHZ. 2018-01-11T15:37:25.05 0.3 undecidable manual P 13 88.0452 50 -0.01 67
GU.POPM.HHZ. 2018-01-11T15:37:25.72 0.3 undecidable manual P 351 91.3419 50 0.14 64
IV.MTCR.EHZ. 2018-01-11T15:37:25.39 0.3 undecidable manual P 3 88.5447 50 0.25 63
IV.RUFI.EHZ. 2018-01-11T15:37:24.17 0.3 undecidable manual P 34 81.5517 50 0.1 66
IV.CAFI.HHZ. 2018-01-11T15:37:24.44 0.3 undecidable manual P 82 83.9493 50 0.01 67
GU.MAIM.HHZ. 2018-01-11T15:37:24.36 0.3 undecidable manual P 335 83.7495 50 -0.04 67
TV.SF04.EHZ. 2018-01-11T15:37:23.20 0.1 undecidable manual P 127 73.371 50 0.4 84
IV.OSSC.HHZ. 2018-01-11T15:37:23.44 0.6 undecidable manual S 38 40.9257 50 -0.38 45
TV.SF01.EHZ. 2018-01-11T15:37:22.49 0.1 undecidable manual P 132 68.9754 50 0.36 86
IV.CSNT.HHZ. 2018-01-11T15:37:22.75 0.3 undecidable manual S 47 39.1275 50 -0.61 63
IV.PII.HHZ. 2018-01-11T15:37:21.22 0.3 undecidable manual P 329 63.6918 50 -0.09 69
IV.RIBO.EHZ. 2018-01-11T15:37:20.51 0.3 undecidable manual S 164 32.6451 102 -0.64 63
Z3.A318A.HHZ. 2018-01-11T15:37:20.33 0.1 undecidable manual S 247 31.8459 103 -0.55 87
IV.ARCI.HHZ. 2018-01-11T15:37:20.87 0.3 undecidable manual P 134 60.6948 50 0.02 70
IV.CASP.HHZ. 2018-01-11T15:37:18.88 0.1 undecidable manual P 187 49.2174 50 -0.21 92
IV.MAGO.HHZ. 2018-01-11T15:37:18.00 0.3 undecidable manual S 282 22.9548 107 0.1 74
IV.OSSC.HHZ. 2018-01-11T15:37:17.50 0.1 positive manual P 38 40.9257 50 -0.3 91
Z3.A319A.HHE. 2018-01-11T15:37:17.22 0.1 undecidable manual P 313 39.627 50 -0.38 90
IV.CSNT.HHZ. 2018-01-11T15:37:17.10 0.1 positive manual P 47 39.1275 50 -0.43 89
IV.RIBO.EHZ. 2018-01-11T15:37:16.02 0.1 undecidable manual P 164 32.6451 102 -0.23 94
Z3.A318A.HHZ. 2018-01-11T15:37:16.12 0.1 undecidable manual P 247 31.8459 103 0.02 98
IV.TRIF.HHZ. 2018-01-11T15:37:15.05 0.3 undecidable manual S 192 13.2756 118 0.27 72
IV.FROS.HHZ. 2018-01-11T15:37:15.94 0.3 undecidable manual S 98 17.9709 112 -0.33 71
IV.MAGO.HHZ. 2018-01-11T15:37:14.61 0.1 positive manual P 282 22.9548 107 0.23 96
IV.FROS.HHZ. 2018-01-11T15:37:13.50 0.1 positive manual P 98 17.9709 112 0.06 100
IV.TRIF.HHZ. 2018-01-11T15:37:12.89 0.1 positive manual P 192 13.2756 118 0.31 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.HHN. ML:2.8 0.0070682265 0.1152 AML other m 2018-01-11T15:37:15.07
IV.TRIF.HHE. ML:2.8 0.008287741000000001 0.1024 AML other m 2018-01-11T15:37:15.83
IV.FROS.HHN. ML:2.2 0.0014725825000000002 0.2048 AML other m 2018-01-11T15:37:19.18
IV.FROS.HHE. ML:2.3 0.0016899880000000001 0.0896 AML other m 2018-01-11T15:37:18.16
IV.MAGO.HHE. ML:2.5 0.0020665279999999998 0.1536 AML other m 2018-01-11T15:37:18.05
IV.MAGO.HHN. ML:2.3 0.00131123085 0.1664 AML other m 2018-01-11T15:37:19.83
IV.RIBO.EHE.01 ML:2.5 0.001412957 0.2432 AML other m 2018-01-11T15:37:23.45
IV.CSNT.HHN. ML:1.9 0.0003058053 0.1408 AML other m 2018-01-11T15:37:23.40
IV.CSNT.HHE. ML:1.8 0.00024363329999999998 0.1664 AML other m 2018-01-11T15:37:23.19
IV.OSSC.HHE. ML:2.1 0.00043416325 0.1664 AML other m 2018-01-11T15:37:24.34
IV.OSSC.HNE. ML:2.0 0.0003437649 0.1536 AML other m 2018-01-11T15:37:24.11
IV.OSSC.HNN. ML:2.1 0.00042282165 0.3968 AML other m 2018-01-11T15:37:25.24
IV.OSSC.HHN. ML:2.0 0.00038010714999999997 0.1536 AML other m 2018-01-11T15:37:24.11
IV.CASP.HHN. ML:2.3 0.000493605 0.192 AML other m 2018-01-11T15:37:25.86
IV.CASP.HHE. ML:2.1 0.00035718195 0.1792 AML other m 2018-01-11T15:37:25.47
IV.ARCI.HHN. ML:2.0 0.0001865848 0.2816 AML other m 2018-01-11T15:37:32.45
IV.ARCI.HHE. ML:1.8 0.000134100795 0.3584 AML other m 2018-01-11T15:37:32.95
IV.PII.HHN. ML:2.2 0.0002788956 0.3584 AML other m 2018-01-11T15:37:31.08
IV.PII.HHE. ML:2.2 0.000318089 0.2816 AML other m 2018-01-11T15:37:31.33
TV.SF01.EHE. ML:2.4 0.00038537925 0.3712 AML other m 2018-01-11T15:37:32.06
TV.SF01.EHN. ML:2.3 0.00032032655 0.2816 AML other m 2018-01-11T15:37:32.09
TV.SF04.EHN. ML:2.4 0.00036281295 0.192 AML other m 2018-01-11T15:37:34.12
TV.SF04.EHE. ML:2.4 0.00039598525 0.1664 AML other m 2018-01-11T15:37:33.95
IV.RUFI.EHE. ML:1.9 0.000103230005 0.384 AML other m 2018-01-11T15:37:36.37
IV.RUFI.EHN. ML:1.7 0.00007200014 0.3072 AML other m 2018-01-11T15:37:36.52
GU.MAIM.HHE. ML:1.7 0.000061258645 0.256 AML other m 2018-01-11T15:37:36.60
GU.MAIM.HHN. ML:1.6 0.000053946255 0.7296 AML other m 2018-01-11T15:37:42.60
IV.CAFI.HNE. ML:1.5 0.0000472542 0.832 AML other m 2018-01-11T15:37:54.08
IV.CAFI.HHE. ML:1.3 0.000025903699999999997 0.64 AML other m 2018-01-11T15:37:39.31
IV.CAFI.HHN. ML:1.4 0.000028355445 0.6016 AML other m 2018-01-11T15:37:40.40
IV.CAFI.HNN. ML:2.1 0.00016235375000000002 0.7936 AML other m 2018-01-11T15:37:44.82
IV.MOCL.EHN. ML:2.0 0.00012488050000000002 0.2432 AML other m 2018-01-11T15:37:30.49
IV.MOCL.EHE. ML:1.8 0.0000737724 0.3456 AML other m 2018-01-11T15:37:32.13
IV.MTCR.EHE. ML:1.8 0.00007794182499999999 0.256 AML other m 2018-01-11T15:37:29.25
IV.MTCR.EHN. ML:1.8 0.00007971550499999999 0.7424 AML other m 2018-01-11T15:37:40.06
GU.POPM.HHN. ML:2.1 0.00014028170000000002 0.2816 AML other m 2018-01-11T15:37:40.66
GU.POPM.HHE. ML:2.1 0.0001404837 0.2176 AML other m 2018-01-11T15:37:40.50
IV.CRE.HHE. ML:1.7 0.000060445075 0.2688 AML other m 2018-01-11T15:37:29.16
IV.CRE.HHN. ML:1.8 0.000067615705 0.4224 AML other m 2018-01-11T15:37:43.90
IV.MAON.HHE. ML:2.3 0.00024378524999999997 0.2432 AML other m 2018-01-11T15:37:38.18
IV.MAON.HHN. ML:2.3 0.00023476320000000002 0.2432 AML other m 2018-01-11T15:37:38.71
IV.SEI.HHN. ML:2.2 0.0001850602 0.4736 AML other m 2018-01-11T15:37:45.29
IV.SEI.HHE. ML:2.1 0.000119445035 0.4224 AML other m 2018-01-11T15:37:46.11
IV.LMD.HHN. ML:1.6 0.00003562679000000001 0.3072 AML other m 2018-01-11T15:37:36.28
IV.LMD.HHE. ML:1.7 0.000046390095 0.2944 AML other m 2018-01-11T15:37:46.05
IV.PARC.HHN. ML:1.5 0.000026166654999999998 0.7168 AML other m 2018-01-11T15:37:51.05
IV.PARC.HHE. ML:1.6 0.00003265519 0.4096 AML other m 2018-01-11T15:37:50.37
GU.SARM.EHE. ML:2.0 0.000087540355 0.5632 AML other m 2018-01-11T15:37:47.96
GU.SARM.EHN. ML:2.1 0.00011049917 0.4864 AML other m 2018-01-11T15:37:54.62
IV.T1299.EHE. ML:2.8 0.00018584255 0.0768 AML other m 2018-01-11T15:37:35.39
IV.T1299.EHN. ML:2.7 0.00014450974999999998 0.1024 AML other m 2018-01-11T15:37:35.56
IV.T1299.HNE. ML:2.8 0.00020894795999999998 0.0768 AML other m 2018-01-11T15:37:35.39
IV.T1299.HNN. ML:4.2 0.005102095399999999 0.5504 AML other m 2018-01-11T15:37:42.30
IV.VVLD.HHN. ML:2.1 0.000020942394999999998 0.7424 AML other m 2018-01-11T15:38:00.03
IV.VVLD.HHE. ML:2.1 0.000020934015 0.8704 AML other m 2018-01-11T15:38:31.37
IV.ZONE.HHN. ML:2.2 0.0000211806685 0.1024 AML other m 2018-01-11T15:38:17.99
IV.ZONE.HHE. ML:2.2 0.000018018105 0.0768 AML other m 2018-01-11T15:38:17.87
IV.ZONE.HNE. ML:2.9 0.0001173807 0.6656 AML other m 2018-01-11T15:37:47.62
IV.ZONE.HNN. ML:3.1 0.00015920335 1.1136 AML other m 2018-01-11T15:38:45.54
IV.CAPR.HNE. ML:3.0 0.00016313575000000003 0.0768 AML other m 2018-01-11T15:38:03.35
IV.CAPR.HNN. ML:3.0 0.0001398163 0.32 AML other m 2018-01-11T15:38:29.64
GU.BURY.HHE. ML:2.8 0.00009524185500000002 0.1152 AML other m 2018-01-11T15:38:01.60
GU.BURY.HHN. ML:2.6 0.00006428919499999999 1.2032 AML other m 2018-01-11T15:38:32.50
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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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