Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 23-01-2016 and time 01:51:46 (Italy) in region 2 km SE Valledolmo (PA)

A magnitude ML 2.2 earthquake occured in region: 2 km SE Valledolmo (PA), on

  • 23-01-2016 00:51:46 (UTC)
  • 23-01-2016 01:51:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7320, 13.8450 at 36 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
Valledolmo PA 2 3594 3594
Vallelunga Pratameno CL 6 3461 7055
Villalba CL 9 1633 8688
Sclafani Bagni PA 10 426 9114
Caltavuturo PA 11 4017 13131
Alia PA 13 3623 16754
Montemaggiore Belsito PA 15 3365 20119
Scillato PA 15 613 20732
Aliminusa PA 16 1236 21968
Marianopoli CL 16 1906 23874
Polizzi Generosa PA 16 3407 27281
Resuttano CL 17 2038 29319
Castellana Sicula PA 18 3411 32730
Mussomeli CL 19 10780 43510
Cerda PA 19 5330 48840
Roccapalumba PA 20 2516 51356

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of Caltanissetta (63360 inhabitants)
49 Km SE of Bagheria (55387 inhabitants)
52 Km NE of Agrigento (59770 inhabitants)
60 Km SE of Palermo (674435 inhabitants)
82 Km NW of Gela (75827 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 2.2 2016-01-23
00:51:46		 37.7323 13.8453 36 2016-05-17
13:16:23		 Bollettino Sismico Italiano INGV 23449821
Reviewed
Rev100 		ML 2.3 2016-01-23
00:51:46		 37.7355 13.8352 36 2016-01-23
01:11:13		 Sala Sismica INGV-Roma 23200331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-01-23 00:51:46 ± 0.08
Latitude 37.7323 ± 0.0063
Longitude 13.8453 ± 0.0068
Depth (km) 36 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 23449821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 651
Semi-minor axis of confidence ellipse (meter) 609
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 317
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.18796
Epicentral distance of station farthest from the epicenter (degree) 1.39485
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 23200331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-01-23 01:11:13

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 23449821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-02-10 10:32:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2016-01-23T00:52:27.77 0.6 undecidable manual S 137 154.8228 54 0.59 34
IV.HAVL.HHZ. 2016-01-23T00:52:24.83 0.3 undecidable manual S 127 141.5472 54 0.53 54
IV.HAGA.HHZ. 2016-01-23T00:52:21.06 1.0 undecidable manual S 113 125.4744 54 0.21 20
IV.SSY.HHZ. 2016-01-23T00:52:20.96 0.6 undecidable manual S 120 125.5743 54 0.09 41
IV.HMDC.HHZ. 2016-01-23T00:52:19.73 0.6 undecidable manual S 136 119.1918 54 0.25 40
IV.MEU.SHZ. 2016-01-23T00:52:17.57 0.6 undecidable manual S 128 110.8002 54 -0.11 42
IV.HLNI.HHZ. 2016-01-23T00:52:15.81 0.3 undecidable manual S 115 99.8223 54 0.49 60
IV.HPAC.HHZ. 2016-01-23T00:52:09.73 0.1 undecidable manual P 137 154.8228 54 -0.18 75
IV.HAVL.HHZ. 2016-01-23T00:52:08.04 0.3 undecidable manual P 127 141.5472 54 -0.21 58
IV.SSY.HHZ. 2016-01-23T00:52:06.16 0.1 undecidable manual P 120 125.5743 54 -0.1 82
MN.CLTB.HHE. 2016-01-23T00:52:06.09 0.6 undecidable manual S 253 57.8976 118 0.15 46
IV.HAGA.HHZ. 2016-01-23T00:52:06.10 0.1 undecidable manual P 113 125.4744 54 -0.15 81
IV.HMDC.HHZ. 2016-01-23T00:52:05.12 0.3 undecidable manual P 136 119.1918 54 -0.35 59
IV.MEU.SHZ. 2016-01-23T00:52:04.18 0.6 undecidable manual P 128 110.8002 54 -0.25 41
IV.IACL.HHZ. 2016-01-23T00:52:03.22 0.3 undecidable manual P 26 99.3228 54 0.22 63
IV.HLNI.HHZ. 2016-01-23T00:52:02.62 0.1 positive manual P 115 99.8223 54 -0.44 81
IV.PLLN.EHZ. 2016-01-23T00:52:01.90 0.3 undecidable manual S 42 38.9277 129 0.18 72
IV.GIB.HHZ. 2016-01-23T00:52:00.46 0.3 undecidable manual S 29 32.6451 135 -0.02 75
IV.ECNV.HHZ. 2016-01-23T00:52:00.56 0.6 undecidable manual P 101 77.6667 54 0.26 44
IV.CSLB.HHZ. 2016-01-23T00:51:59.67 0.3 undecidable manual S 39 29.4483 138 -0.21 72
IV.MCT.BHZ. 2016-01-23T00:51:59.03 0.3 undecidable manual S 239 24.3534 144 0 76
IV.PETRA.HHZ. 2016-01-23T00:51:59.74 0.3 undecidable manual S 65 26.1516 142 0.42 70
MN.CLTB.HHE. 2016-01-23T00:51:58.36 0.6 undecidable manual P 253 57.8976 118 0.71 39
IV.RESU.HHZ. 2016-01-23T00:51:58.96 0.3 undecidable manual S 117 20.868 148 0.46 70
IV.MPG.SHZ. 2016-01-23T00:51:58.80 0.6 undecidable manual P 318 63.7917 115 0.34 44
IV.CLTA.HHZ. 2016-01-23T00:51:58.05 0.1 undecidable manual P 171 64.491 115 -0.52 85
IV.FAVR.HHZ. 2016-01-23T00:51:57.66 0.1 undecidable manual P 197 53.9016 120 0.54 85
IV.SOLUN.HHZ. 2016-01-23T00:51:56.38 0.1 undecidable manual P 326 48.4182 123 0 97
IV.PLLN.EHZ. 2016-01-23T00:51:55.22 0.3 undecidable manual P 42 38.9277 129 0.01 74
IV.GIB.HHZ. 2016-01-23T00:51:54.42 0.1 undecidable manual P 29 32.6451 135 -0.08 99
IV.PETRA.HHZ. 2016-01-23T00:51:53.57 0.1 undecidable manual P 65 26.1516 142 -0.25 96
IV.CSLB.HHZ. 2016-01-23T00:51:53.83 0.1 undecidable manual P 39 29.4483 138 -0.32 95
IV.RESU.HHZ. 2016-01-23T00:51:53.04 0.1 undecidable manual P 117 20.868 148 -0.31 96
IV.MCT.BHZ. 2016-01-23T00:51:53.55 0.1 undecidable manual P 239 24.3534 144 -0.11 100
IV.CMDO.HHZ. 2016-01-23T00:51:53.90 0.6 undecidable manual P 184 29.8479 138 -0.29 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ECNV.HHN. ML:2.2 0.000193 1.52 AML other m 2016-01-23T00:52:17.12
IV.ECNV.HHE. ML:2.1 0.00015900000000000002 0.66 AML other m 2016-01-23T00:52:22.17
IV.FAVR.HHN. ML:2.0 0.000205 0.54 AML other m 2016-01-23T00:52:12.07
IV.FAVR.HHE. ML:2.0 0.000193 1.32 AML other m 2016-01-23T00:52:15.87
IV.GIB.HHN. ML:2.2 0.000484 0.54 AML other m 2016-01-23T00:52:05.77
IV.GIB.HHE. ML:2.1 0.0003695 0.46 AML other m 2016-01-23T00:52:06.24
IV.HLNI.HHE. ML:2.6 0.000377 1.16 AML other m 2016-01-23T00:52:17.65
IV.HLNI.HHN. ML:2.6 0.00033 1.22 AML other m 2016-01-23T00:52:18.04
IV.HMDC.HHE. ML:2.7 0.0003725 0.26 AML other m 2016-01-23T00:52:21.94
IV.HMDC.HHN. ML:2.8 0.000413 1.06 AML other m 2016-01-23T00:52:22.14
IV.IACL.HHN. ML:2.1 0.0001175 0.26 AML other m 2016-01-23T00:52:20.37
IV.IACL.HHE. ML:2.1 0.00010595 1.08 AML other m 2016-01-23T00:52:19.43
IV.MCT.BHN. ML:2.2 0.00047 0.64 AML other m 2016-01-23T00:52:04.96
IV.MCT.BHE. ML:2.1 0.000363 1.56 AML other m 2016-01-23T00:52:07.20
IV.MEU.SHE. ML:0.0 0.0007844999999999999 0.24 AML other m 2016-01-23T00:52:22.26
IV.MEU.SHN. ML:0.0 0.001007 0.24 AML other m 2016-01-23T00:52:20.60
IV.MPG.SHN. ML:0.0 0.0000616 0.32 AML other m 2016-01-23T00:52:00.16
IV.MPG.SHE. ML:0.0 0.00007865 1.16 AML other m 2016-01-23T00:52:00.66
IV.PETRA.HHE. ML:2.2 0.0005645 1.28 AML other m 2016-01-23T00:52:01.11
IV.PETRA.HHN. ML:2.1 0.000418 0.82 AML other m 2016-01-23T00:52:00.47
IV.PLLN.EHN. ML:2.2 0.000373 0.64 AML other m 2016-01-23T00:52:08.79
IV.PLLN.EHE. ML:2.0 0.00027699999999999996 0.84 AML other m 2016-01-23T00:52:09.77
IV.RESU.HHN. ML:2.4 0.0007825 0.66 AML other m 2016-01-23T00:52:01.00
IV.RESU.HHE. ML:2.3 0.0006850000000000001 0.44 AML other m 2016-01-23T00:52:01.59
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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