Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 31-03-2014 and time 20:11:49 (Italy) in region 2 km NE Massa Martana (PG)

A magnitude ML 2.4 earthquake occured in region: 2 km NE Massa Martana (PG), on

  • 31-03-2014 18:11:49 (UTC)
  • 31-03-2014 20:11:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7880, 12.5330 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
Massa Martana PG 2 3770 3770
Giano dell'Umbria PG 6 3846 7616
Todi PG 10 16851 24467
Acquasparta TR 11 4778 29245
Castel Ritaldi PG 12 3278 32523
Gualdo Cattaneo PG 14 6155 38678
Collazzone PG 14 3473 42151
Montefalco PG 15 5679 47830
Fratta Todina PG 16 1839 49669
Montecastrilli TR 16 5022 54691
Monte Castello di Vibio PG 16 1567 56258
Avigliano Umbro TR 17 2558 58816
Bevagna PG 18 5081 63897
Spoleto PG 18 38218 102115
San Gemini TR 19 5018 107133

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SW of Foligno (57155 inhabitants)
27 Km NW of Terni (111501 inhabitants)
37 Km SE of Perugia (166134 inhabitants)
54 Km NE of Viterbo (67173 inhabitants)
86 Km NW of L'Aquila (69753 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km SE of Arezzo (99543 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
97 Km W of Teramo (54892 inhabitants)
98 Km NE of Civitavecchia (52991 inhabitants)
100 Km N of Roma (2864731 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 2.4 2014-03-31
18:11:49		 42.7883 12.5332 7 2015-09-21
09:35:11		 Bollettino Sismico Italiano INGV 9214811
Reviewed
Rev100 		ML 2.4 2014-03-31
18:11:49		 42.7963 12.5417 6 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 6024371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-03-31 18:11:49 ± 0.06
Latitude 42.7883 ± 0.0027
Longitude 12.5332 ± 0.0049
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 9214811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 325
Semi-minor axis of confidence ellipse (meter) 294
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.03962
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 6024371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-03-31 18:28:31

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 9214811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2014-11-04 16:08:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VENT.EHZ. 2014-03-31T18:12:55.99 3.0 undecidable manual Sg 3.1 0
IV.MCRV.HHZ. 2014-03-31T18:12:42.21 3.0 undecidable manual Pg 7.49 0
IV.CAMP.HHZ. 2014-03-31T18:12:14.27 0.6 undecidable manual S 111 76.7676 50 0.64 38
IV.CAFI.HHZ. 2014-03-31T18:12:14.06 0.6 undecidable manual S 323 75.5688 50 0.74 36
IV.FIAM.HHZ. 2014-03-31T18:12:13.38 0.6 undecidable manual S 140 74.8695 50 0.23 43
IV.EL6.EHZ. 2014-03-31T18:12:13.73 0.6 undecidable manual S 37 75.6687 50 0.39 41
IV.SMA1.EHZ. 2014-03-31T18:12:11.59 1.0 undecidable manual S 105 67.6767 50 0.37 21
IV.ATFO.HHZ. 2014-03-31T18:12:11.04 0.6 undecidable manual S 3 64.1913 50 0.75 37
IV.CSP1.EHZ. 2014-03-31T18:12:10.88 0.6 undecidable manual S 58 64.0914 50 0.62 39
IV.SNTG.HHZ. 2014-03-31T18:12:09.73 1.0 undecidable manual S 32 61.3941 50 0.19 22
IV.VCEL.EHZ. 2014-03-31T18:12:09.52 0.6 undecidable manual P 112 115.3956 50 0.02 41
IV.FAGN.HHZ. 2014-03-31T18:12:08.32 3.0 undecidable manual P 0.35 0
IV.PARC.HHZ. 2014-03-31T18:12:07.41 0.3 undecidable manual P 346 98.3238 50 0.54 57
IV.MURB.HHZ. 2014-03-31T18:12:06.83 0.6 undecidable manual S 359 52.6029 50 -0.37 43
IV.ATTE.HHZ. 2014-03-31T18:12:05.56 0.6 undecidable manual S 342 47.7189 50 -0.32 44
IV.NRCA.HHZ. 2014-03-31T18:12:05.73 0.6 undecidable manual S 84 47.5191 50 -0.11 46
IV.ATCC.EHZ. 2014-03-31T18:12:05.19 0.6 undecidable manual S 11 44.8218 50 0.07 47
IV.TOLF.HHE. 2014-03-31T18:12:05.99 0.6 undecidable manual P 209 91.4418 50 0.18 42
IV.LNSS.HHZ. 2014-03-31T18:12:05.08 0.3 undecidable manual S 116 46.2204 50 -0.4 65
IV.PIEI.HHZ. 2014-03-31T18:12:04.61 0.3 undecidable manual P 0 82.8504 50 0.12 64
IV.CAMP.HHZ. 2014-03-31T18:12:03.11 0.6 undecidable manual P 111 76.7676 50 -0.44 41
IV.CAFI.HHZ. 2014-03-31T18:12:03.14 0.6 undecidable manual P 323 75.5688 50 -0.22 43
IV.EL6.EHZ. 2014-03-31T18:12:03.39 0.3 undecidable manual P 37 75.6687 50 0.01 67
IV.ATPI.EHZ. 2014-03-31T18:12:03.13 0.6 undecidable manual P 352 74.2701 50 -0.03 44
IV.FIAM.HHZ. 2014-03-31T18:12:02.76 0.6 undecidable manual P 140 74.8695 50 -0.5 40
IV.SMA1.EHZ. 2014-03-31T18:12:02.11 0.3 undecidable manual P 105 67.6767 50 -0.04 67
IV.MCIV.HHZ. 2014-03-31T18:12:02.72 0.6 undecidable manual P 269 69.7746 50 0.25 43
IV.ATFO.HHZ. 2014-03-31T18:12:01.67 0.6 undecidable manual P 3 64.1913 50 0.06 45
IV.CSP1.EHZ. 2014-03-31T18:12:01.54 0.6 undecidable manual P 58 64.0914 50 -0.06 45
IV.LATE.HHZ. 2014-03-31T18:12:01.73 0.3 undecidable manual P 252 62.493 50 0.38 63
IV.ATMI.HHZ. 2014-03-31T18:12:01.44 0.6 undecidable manual P 341 64.2912 50 -0.18 44
IV.SNTG.HHZ. 2014-03-31T18:12:01.10 0.3 undecidable manual P 32 61.3941 50 -0.08 68
IV.ATVO.HHZ. 2014-03-31T18:12:01.63 0.6 undecidable manual P 351 66.6777 50 -0.36 42
IV.ARRO.EHZ. 2014-03-31T18:12:00.61 0.6 undecidable manual S 141 29.9478 103 0.17 47
IV.ASSB.HHZ. 2014-03-31T18:12:00.61 0.3 undecidable manual S 20 29.9478 103 0.17 70
IV.SACS.HHZ. 2014-03-31T18:11:59.53 0.1 negative manual P 278 51.2154 50 -0.07 92
IV.MURB.HHZ. 2014-03-31T18:11:59.66 0.3 undecidable manual P 359 52.6029 50 -0.17 67
IV.ATCC.EHZ. 2014-03-31T18:11:58.34 0.3 undecidable manual P 11 44.8218 50 -0.29 67
IV.LNSS.HHZ. 2014-03-31T18:11:58.46 0.1 undecidable manual P 116 46.2204 50 -0.37 87
IV.FEMA.HNE. 2014-03-31T18:11:58.81 0.6 undecidable manual P 65 46.2204 50 -0.03 47
IV.ATTE.HHZ. 2014-03-31T18:11:58.62 0.1 negative manual P 342 47.7189 50 -0.45 86
IV.NRCA.HHZ. 2014-03-31T18:11:58.92 0.6 undecidable manual P 84 47.5191 50 -0.12 46
IV.CESI.HHZ. 2014-03-31T18:11:57.47 0.3 undecidable manual P 51 38.5281 100 -0.14 70
IV.CESX.HHZ. 2014-03-31T18:11:57.63 0.6 undecidable manual S 168 20.4684 109 0.38 46
IV.MGAB.HHZ. 2014-03-31T18:11:57.12 0.1 negative manual P 292 36.9297 101 -0.16 93
IV.ASSB.HHZ. 2014-03-31T18:11:55.98 0.1 negative manual P 20 29.9478 103 0.05 96
IV.ARRO.EHZ. 2014-03-31T18:11:55.82 0.1 positive manual P 141 29.9478 103 -0.1 95
IV.CESX.HHZ. 2014-03-31T18:11:54.19 0.1 positive manual P 168 20.4684 109 0.11 96
IV.MOMA.HHZ. 2014-03-31T18:11:51.36 0.1 negative manual P 64 3.1968 155 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:2.5 0.001655 1.1 AML other m 2014-03-31T18:12:04.24
IV.ARRO.EHN. ML:2.5 0.0014500000000000001 0.74 AML other m 2014-03-31T18:12:04.44
IV.ASSB.HHE. ML:2.3 0.000977 1.3 AML other m 2014-03-31T18:12:01.00
IV.ASSB.HHN. ML:2.1 0.0006825 0.98 AML other m 2014-03-31T18:12:03.93
IV.ATCC.EHN. ML:2.3 0.0006950000000000001 0.44 AML other m 2014-03-31T18:12:12.51
IV.ATCC.EHE. ML:2.4 0.000885 0.38 AML other m 2014-03-31T18:12:13.19
IV.ATFO.HHN. ML:2.5 0.0005735 0.54 AML other m 2014-03-31T18:12:15.97
IV.ATFO.HHE. ML:2.5 0.000615 0.56 AML other m 2014-03-31T18:12:17.35
IV.ATMI.HHE. ML:2.8 0.001145 0.48 AML other m 2014-03-31T18:12:17.62
IV.ATMI.HHN. ML:2.9 0.001405 0.7 AML other m 2014-03-31T18:12:19.34
IV.ATPI.EHN. ML:2.4 0.0003985 0.56 AML other m 2014-03-31T18:12:18.24
IV.ATPI.EHE. ML:2.4 0.0003765 0.96 AML other m 2014-03-31T18:12:17.97
IV.ATTE.HHN. ML:2.2 0.000439 0.66 AML other m 2014-03-31T18:12:07.89
IV.ATTE.HHE. ML:2.2 0.00043799999999999997 0.42 AML other m 2014-03-31T18:12:16.25
IV.ATVO.HHE. ML:2.4 0.000433 0.34 AML other m 2014-03-31T18:12:16.23
IV.ATVO.HHN. ML:2.4 0.00046699999999999997 0.54 AML other m 2014-03-31T18:12:15.30
IV.CESI.HHE. ML:1.6 0.000146 0.66 AML other m 2014-03-31T18:12:09.13
IV.CESI.HHN. ML:2.0 0.0003715 0.78 AML other m 2014-03-31T18:12:09.19
IV.CESX.HHE. ML:2.8 0.005415 0.68 AML other m 2014-03-31T18:12:05.16
IV.CESX.HHN. ML:2.7 0.004220000000000001 0.58 AML other m 2014-03-31T18:12:05.18
IV.FAGN.HHE. ML:2.8 0.000612 0.56 AML other m 2014-03-31T18:12:27.74
IV.FAGN.HHN. ML:2.6 0.0003885 0.62 AML other m 2014-03-31T18:12:31.30
IV.FIAM.HHE. ML:2.4 0.00037050000000000006 0.52 AML other m 2014-03-31T18:12:21.18
IV.FIAM.HHN. ML:2.3 0.00030100000000000005 0.96 AML other m 2014-03-31T18:12:25.71
IV.LATE.HHN. ML:2.7 0.0009299999999999999 0.72 AML other m 2014-03-31T18:12:18.33
IV.LATE.HHE. ML:2.5 0.00065 0.38 AML other m 2014-03-31T18:12:16.64
IV.LNSS.HHN. ML:2.6 0.0012250000000000002 0.9 AML other m 2014-03-31T18:12:09.49
IV.LNSS.HHE. ML:2.6 0.0011749999999999998 0.8 AML other m 2014-03-31T18:12:07.10
IV.MCIV.HHN. ML:1.9 0.000136 0.9 AML other m 2014-03-31T18:12:18.81
IV.MCIV.HHE. ML:2.2 0.00023799999999999998 0.32 AML other m 2014-03-31T18:12:16.72
IV.MGAB.HHE. ML:2.4 0.001109 0.42 AML other m 2014-03-31T18:12:06.53
IV.MGAB.HHN. ML:2.4 0.0009915 0.4 AML other m 2014-03-31T18:12:07.86
IV.MGAB.HNN. ML:2.4 0.001065 0.46 AML other m 2014-03-31T18:12:06.30
IV.MGAB.HNE. ML:2.4 0.0009885 0.56 AML other m 2014-03-31T18:12:06.53
IV.MURB.HHN. ML:2.9 0.0018900000000000002 0.28 AML other m 2014-03-31T18:12:11.01
IV.MURB.HHE. ML:2.9 0.0020499999999999997 1.36 AML other m 2014-03-31T18:12:09.84
IV.MURB.HNE. ML:2.9 0.002005 1.38 AML other m 2014-03-31T18:12:09.85
IV.MURB.HNN. ML:2.8 0.001685 0.3 AML other m 2014-03-31T18:12:11.01
IV.NRCA.HHE. ML:2.4 0.0006715 0.7 AML other m 2014-03-31T18:12:06.80
IV.NRCA.HHN. ML:2.2 0.0005074999999999999 0.4 AML other m 2014-03-31T18:12:08.63
IV.PARC.HHN. ML:2.4 0.00026249999999999993 0.48 AML other m 2014-03-31T18:12:26.72
IV.PARC.HHE. ML:2.4 0.0002465 0.58 AML other m 2014-03-31T18:12:26.88
IV.PIEI.HHE. ML:2.3 0.000277 1.34 AML other m 2014-03-31T18:12:20.86
IV.PIEI.HHN. ML:2.2 0.000211 0.34 AML other m 2014-03-31T18:12:21.00
IV.SACS.HHN. ML:2.2 0.000414 0.9 AML other m 2014-03-31T18:12:16.61
IV.SACS.HHE. ML:2.2 0.0003665 1.54 AML other m 2014-03-31T18:12:16.73
IV.SMA1.EHN. ML:2.6 0.000732 0.52 AML other m 2014-03-31T18:12:14.25
IV.SMA1.EHE. ML:2.6 0.0007564999999999999 1.44 AML other m 2014-03-31T18:12:14.83
IV.SNTG.HHE. ML:2.0 0.0001875 1.1 AML other m 2014-03-31T18:12:17.21
IV.SNTG.HHN. ML:2.1 0.0002395 0.4 AML other m 2014-03-31T18:12:12.73
IV.VCEL.EHE. ML:2.5 0.000234 0.48 AML other m 2014-03-31T18:12:32.54
IV.VCEL.EHN. ML:2.5 0.00024349999999999998 0.82 AML other m 2014-03-31T18:12:32.99
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