Earthquake with magnitude of ML 0.8 on date 16-02-2009 and time 18:57:36 (Italy) in region 4 km NE Cascia (PG)

A magnitude ML 0.8 earthquake occured in region: 4 km NE Cascia (PG), on

  • 16-02-2009 17:57:36 (UTC)
  • 16-02-2009 18:57:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7530, 13.0410 at 5 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
Cascia PG 4 3217 3217
Norcia PG 6 4957 8174
Poggiodomo PG 10 117 8291
Cerreto di Spoleto PG 13 1075 9366
Monteleone di Spoleto PG 13 599 9965
Preci PG 14 724 10689
Vallo di Nera PG 15 364 11053
Sant'Anatolia di Narco PG 17 564 11617
Scheggino PG 18 461 12078
Sellano PG 18 1079 13157
Cittareale RI 18 482 13639
Accumoli RI 18 667 14306
Castelsantangelo sul Nera MC 18 281 14587

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km SE of Foligno (57155 inhabitants)
39 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
55 Km W of Teramo (54892 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
85 Km E of Viterbo (67173 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km N of Tivoli (56533 inhabitants)
95 Km W of Montesilvano (53738 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 1.5
ML 0.8
2009-02-16
17:57:36
42.753 13.041 5 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 744669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-02-16 17:57:36 ± 0.12
Latitude 42.7530 ± 0.0009
Longitude 13.0410 ± 0.0073
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 744669

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 544
Semi-minor axis of confidence ellipse (meter) 319
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 608.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
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) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.09713
Epicentral distance of station farthest from the epicenter (degree) 0.27160
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 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 744669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:04:56

Md:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations
Type of magnitude Md
Reference to an origin 744669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:04:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHE. 2009-02-16T17:57:47.50 0.6 undecidable manual Sg 338 30.1476 0.069 48
IV.LNSS.HHZ. 2009-02-16T17:57:42.82 0.3 undecidable manual Sg 180 16.5723 -0.023 74
IV.CESI.HHE. 2009-02-16T17:57:42.88 0.3 undecidable manual Pg 338 30.1476 -0.079 72
IV.LNSS.HHZ. 2009-02-16T17:57:40.35 0.3 undecidable manual Pg 180 16.5723 0.042 74
IV.NRCA.HHN. 2009-02-16T17:57:40.92 0.3 undecidable manual Sg 33 10.7781 -0.02 75
IV.NRCA.HHN. 2009-02-16T17:57:39.24 0.1 positive manual Pg 33 10.7781 0.027 100
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