Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 28-10-2014 and time 10:27:44 (UTC) in region 3 km S Alatri (FR)

A magnitude ML 1.8 earthquake occured in region: 3 km S Alatri (FR), on

  • 28-10-2014 10:27:44 (UTC)
  • 28-10-2014 11:27:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7040, 13.3380 at 10 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
Alatri FR 3 28952 28952
Fumone FR 5 2102 31054
Veroli FR 7 20560 51614
Collepardo FR 7 968 52582
Ferentino FR 7 21213 73795
Frosinone FR 7 46323 120118
Vico nel Lazio FR 8 2234 122352
Torrice FR 10 4816 127168
Trivigliano FR 10 1705 128873
Guarcino FR 11 1623 130496
Torre Cajetani FR 11 1376 131872
Ripi FR 13 5270 137142
Boville Ernica FR 13 8737 145879
Morolo FR 14 3257 149136
Arnara FR 14 2309 151445
Supino FR 14 4873 156318
Patrica FR 15 3171 159489
Fiuggi FR 15 10536 170025
Ceccano FR 15 23565 193590
Anagni FR 16 21464 215054
Sgurgola FR 16 2676 217730
Monte San Giovanni Campano FR 17 12929 230659
Pofi FR 17 4204 234863
Acuto FR 17 1920 236783
Strangolagalli FR 17 2491 239274
Castelliri FR 18 3454 242728
Giuliano di Roma FR 19 2400 245128
Trevi nel Lazio FR 19 1822 246950
Gorga RM 20 710 247660
Isola del Liri FR 20 11715 259375

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NE of Latina (125985 inhabitants)
47 Km E of Velletri (53303 inhabitants)
53 Km SE of Tivoli (56533 inhabitants)
59 Km E of Aprilia (73446 inhabitants)
60 Km SE of Guidonia Montecelio (88673 inhabitants)
65 Km E of Anzio (54211 inhabitants)
70 Km E of Pomezia (62966 inhabitants)
72 Km S of L'Aquila (69753 inhabitants)
74 Km E of Roma (2864731 inhabitants)
92 Km E of Fiumicino (78395 inhabitants)
100 Km SW of Chieti (51815 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 1.8 2014-10-28
10:27:44		 41.7037 13.3378 11 2015-09-21
09:40:11		 Bollettino Sismico Italiano INGV 16868231
Reviewed
Rev100 		ML 1.9 2014-10-28
10:27:44		 41.6917 13.3208 11 2014-10-28
10:36:18		 Sala Sismica INGV-Roma 9110931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-10-28 10:27:44 ± 0.17
Latitude 41.7037 ± 0.0081
Longitude 13.3378 ± 0.0084
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 16868231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 846
Semi-minor axis of confidence ellipse (meter) 631
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 352
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.09263
Epicentral distance of station farthest from the epicenter (degree) 0.68708
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 9110931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-10-28 10:36:18

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 16868231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-02-03 14:59:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MIDA.HHZ. 2014-10-28T10:28:07.79 0.3 undecidable manual S 95 76.2681 50 0.48 63
IV.INTR.HHZ. 2014-10-28T10:28:02.80 0.3 undecidable manual S 54 57.9975 50 0.37 66
IV.CERA.HHZ. 2014-10-28T10:28:02.76 0.3 undecidable manual S 102 57.5979 50 0.42 66
IV.MIDA.HHZ. 2014-10-28T10:27:57.31 0.3 negative manual P 95 76.2681 50 -0.3 65
IV.LATB.EHE. 2014-10-28T10:27:57.99 0.3 undecidable manual S 233 38.8278 50 0.65 63
IV.CERT.HHZ. 2014-10-28T10:27:57.66 0.3 undecidable manual S 313 40.1265 50 0 74
IV.PTQR.HHZ. 2014-10-28T10:27:56.71 0.3 undecidable manual S 8 35.742 50 0.22 71
IV.POFI.HHZ. 2014-10-28T10:27:55.40 0.3 undecidable manual S 87 31.0467 50 0.16 73
IV.INTR.HHZ. 2014-10-28T10:27:54.56 0.3 positive manual P 54 57.9975 50 -0.24 68
IV.CERA.HHZ. 2014-10-28T10:27:54.71 0.3 negative manual P 102 57.5979 50 -0.03 71
IV.VVLD.HHZ. 2014-10-28T10:27:54.42 0.3 undecidable manual S 52 29.9478 50 -0.53 67
IV.CERT.HHZ. 2014-10-28T10:27:52.07 0.1 positive manual P 313 40.1265 50 0.03 98
IV.PTQR.HHZ. 2014-10-28T10:27:51.31 0.3 positive manual P 8 35.742 50 -0.06 74
IV.VVLD.HHZ. 2014-10-28T10:27:50.15 0.1 negative manual P 52 29.9478 50 -0.33 94
IV.POFI.HHZ. 2014-10-28T10:27:50.31 0.3 negative manual P 87 31.0467 50 -0.34 70
IV.LATB.EHE. 2014-10-28T10:27:50.88 0.3 positive manual P 233 38.8278 50 -0.98 55
IV.GUAR.HHZ. 2014-10-28T10:27:49.66 0.3 undecidable manual S 348 10.2786 135 0.2 75
IV.GUAR.HHZ. 2014-10-28T10:27:47.50 0.1 undecidable manual P 348 10.2786 135 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HHN. ML:1.9 0.00016350000000000002 0.62 AML other m 2014-10-28T10:28:10.71
IV.CERA.HHE. ML:1.9 0.00016 0.74 AML other m 2014-10-28T10:28:17.31
IV.CERT.HHE. ML:2.0 0.000322 0.3 AML other m 2014-10-28T10:27:59.32
IV.CERT.HHN. ML:1.7 0.0001805 0.82 AML other m 2014-10-28T10:28:03.94
IV.GUAR.HHE. ML:2.5 0.00428 0.32 AML other m 2014-10-28T10:27:50.38
IV.GUAR.HHN. ML:2.7 0.005705 0.32 AML other m 2014-10-28T10:27:52.53
IV.INTR.HHE. ML:1.9 0.00018099999999999998 0.66 AML other m 2014-10-28T10:28:05.12
IV.INTR.HHN. ML:2.2 0.000312 0.98 AML other m 2014-10-28T10:28:07.70
IV.MIDA.HHN. ML:1.8 0.0000835 1.14 AML other m 2014-10-28T10:28:14.19
IV.MIDA.HHE. ML:1.7 0.00008115 0.34 AML other m 2014-10-28T10:28:17.40
IV.POFI.HHE. ML:1.7 0.000226 1.02 AML other m 2014-10-28T10:28:01.02
IV.POFI.HHN. ML:1.7 0.0002315 0.68 AML other m 2014-10-28T10:27:59.92
IV.PTQR.HHN. ML:1.7 0.00021400000000000002 0.7 AML other m 2014-10-28T10:27:57.79
IV.PTQR.HHE. ML:1.8 0.000265 1.32 AML other m 2014-10-28T10:27:58.62
IV.VVLD.HHN. ML:1.4 0.0001235 0.36 AML other m 2014-10-28T10:27:58.34
IV.VVLD.HHE. ML:1.7 0.00022999999999999998 0.36 AML other m 2014-10-28T10:27:54.59
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