Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 05-05-2006 and time 10:59:09 (Italy) in region 5 km N Acquasparta (TR)

A magnitude ML 2.1 earthquake occured in region: 5 km N Acquasparta (TR), on

  • 05-05-2006 08:59:09 (UTC)
  • 05-05-2006 10:59:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7330, 12.5620 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
Acquasparta TR 5 4778 4778
Massa Martana PG 6 3770 8548
Montecastrilli TR 11 5022 13570
Giano dell'Umbria PG 11 3846 17416
San Gemini TR 13 5018 22434
Castel Ritaldi PG 14 3278 25712
Todi PG 14 16851 42563
Avigliano Umbro TR 14 2558 45121
Spoleto PG 15 38218 83339
Montefalco PG 20 5679 89018
Gualdo Cattaneo PG 20 6155 95173

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Terni (111501 inhabitants)
28 Km SW of Foligno (57155 inhabitants)
44 Km SE of Perugia (166134 inhabitants)
51 Km NE of Viterbo (67173 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
83 Km N of Guidonia Montecelio (88673 inhabitants)
88 Km N of Tivoli (56533 inhabitants)
94 Km N of Roma (2864731 inhabitants)
94 Km W of Teramo (54892 inhabitants)
95 Km NE of Civitavecchia (52991 inhabitants)
99 Km SE of Arezzo (99543 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 		Md 2.5
ML 2.1 		2006-05-05
08:59:09		 42.733 12.562 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 566499
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-05-05 08:59:09 ± 0.13
Latitude 42.7330 ± 0.0072
Longitude 12.5620 ± 0.0122
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 566499

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1053
Semi-minor axis of confidence ellipse (meter) 737
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 109
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.64
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77342
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 566499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:52:49

Md:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 566499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:52:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VVLD.EHZ. 2006-05-05T08:59:54.02 10.0 undecidable manual Sg 0 0 0
IV.FAGN.EHN. 2006-05-05T08:59:44.86 10.0 undecidable manual Sg 0 0 0
IV.CRE.EHE. 2006-05-05T08:59:43.75 10.0 undecidable manual Sg 0 0 0
IV.VCEL.EHE. 2006-05-05T08:59:37.68 10.0 undecidable manual Pg 0 0 0
IV.BADI.EHN. 2006-05-05T08:59:36.86 10.0 undecidable manual Pg 0 0 0
IV.FAGN.EHN. 2006-05-05T08:59:34.93 10.0 undecidable manual Pg 0 0 0
IV.ARV.SHZ. 2006-05-05T08:59:34.93 10.0 undecidable manual Pg 0 0 0
IV.VVLD.EHZ. 2006-05-05T08:59:33.50 10.0 undecidable manual Pg 0 0 0
IV.FIAM.HHZ. 2006-05-05T08:59:32.21 0.3 undecidable manual Sg 138 68.6757 1.827 16
IV.CRE.EHE. 2006-05-05T08:59:29.73 10.0 undecidable manual Pg 0 0 0
IV.SNTG.SHZ. 2006-05-05T08:59:29.84 0.1 undecidable manual Sg 28 65.49 0.308 45
IV.CING.HHN. 2006-05-05T08:59:28.45 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHZ. 2006-05-05T08:59:27.97 0.3 undecidable manual Sg 357 58.8966 0.216 35
IV.NRCA.SHZ. 2006-05-05T08:59:24.53 0.3 undecidable manual Sg 76 46.3203 0.131 37
IV.TERO.HHZ. 2006-05-05T08:59:23.83 0.1 undecidable manual Pg 98 85.8474 -0.298 87
IV.FIAM.HHZ. 2006-05-05T08:59:21.33 0.1 undecidable manual Pg 138 68.6757 -0.161 93
IV.CAMP.EHE. 2006-05-05T08:59:21.98 0.1 positive manual Pg 107 72.4719 -0.091 94
IV.SNTG.SHZ. 2006-05-05T08:59:20.97 0.1 undecidable manual Pg 28 65.49 -0.029 96
IV.MURB.HHZ. 2006-05-05T08:59:19.92 0.1 undecidable manual Pg 357 58.8966 -0.053 97
IV.SACS.HHZ. 2006-05-05T08:59:19.36 0.3 undecidable manual Pg 284 54.7008 0.03 74
IV.NRCA.SHZ. 2006-05-05T08:59:17.96 0.1 positive manual Pg 76 46.3203 -0.075 99
IV.ORI.EHZ. 2006-05-05T08:59:17.50 10.0 undecidable manual Pg 0 0 0
IV.MNS.BHZ. 2006-05-05T08:59:17.10 0.1 undecidable manual Pg 166 39.7269 0.068 100
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