Earthquake with magnitude of ML 0.8 on date 09-04-2007 and time 04:14:31 (Italy) in region 3 km NE Spoleto (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km NE Spoleto (PG), on

  • 09-04-2007 02:14:31 (UTC)
  • 09-04-2007 04:14:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7500, 12.7730 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Spoleto PG 3 38218 38218
Sant'Anatolia di Narco PG 6 564 38782
Scheggino PG 6 461 39243
Vallo di Nera PG 8 364 39607
Campello sul Clitunno PG 8 2442 42049
Castel Ritaldi PG 12 3278 45327
Poggiodomo PG 14 117 45444
Cerreto di Spoleto PG 14 1075 46519
Ferentillo TR 14 1913 48432
Trevi PG 14 8469 56901
Montefranco TR 17 1276 58177
Monteleone di Spoleto PG 18 599 58776
Arrone TR 18 2763 61539
Giano dell'Umbria PG 19 3846 65385
Montefalco PG 19 5679 71064
Polino TR 19 233 71297
Acquasparta TR 20 4778 76075

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Terni (111501 inhabitants)
24 Km S of Foligno (57155 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
77 Km W of Teramo (54892 inhabitants)
83 Km N of Guidonia Montecelio (88673 inhabitants)
87 Km N of Tivoli (56533 inhabitants)
98 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
Md 2.1
ML 0.8
2007-04-09
02:14:31
42.75 12.773 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 623389
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2007-04-09 02:14:31 ± 0.06
Latitude 42.7500 ± 0.0036
Longitude 12.7730 ± 0.0073
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 623389

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 632
Semi-minor axis of confidence ellipse (meter) 263
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 721.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 190
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.26440
Epicentral distance of station farthest from the epicenter (degree) 0.36962
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 623389
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:52:35

Md:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 623389
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:52:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MNS.BHN. 2007-04-09T02:14:45.11 0.1 undecidable manual Sg 191 41.0256 0.081 48
IV.NRCA.SHZ. 2007-04-09T02:14:42.00 0.1 undecidable manual Sg 71 29.3484 0.106 49
IV.CESI.BHE. 2007-04-09T02:14:42.25 0.1 undecidable manual Sg 21 30.2475 0.099 49
IV.MNS.BHN. 2007-04-09T02:14:39.24 0.1 undecidable manual Pg 191 41.0256 -0.014 98
IV.NRCA.SHZ. 2007-04-09T02:14:37.34 0.1 undecidable manual Pg 71 29.3484 -0.104 99
IV.CESI.BHE. 2007-04-09T02:14:37.57 0.1 undecidable manual Pg 21 30.2475 -0.023 100
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