Earthquake with magnitude of ML 1.6 on date 21-02-2007 and time 18:18:30 (Italy) in region 3 km W Treia (MC)

A magnitude ML 1.6 earthquake occured in region: 3 km W Treia (MC), on

  • 21-02-2007 17:18:30 (UTC)
  • 21-02-2007 18:18:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3130, 13.2740 at 3 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
Treia MC 3 9403 9403
Pollenza MC 8 6618 16021
Cingoli MC 8 10352 26373
Appignano MC 8 4213 30586
Tolentino MC 12 20069 50655
San Severino Marche MC 12 12726 63381
Montecassiano MC 14 7125 70506
Apiro MC 15 2280 72786
Macerata MC 15 42473 115259
Filottrano AN 15 9499 124758
Staffolo AN 15 2253 127011
Urbisaglia MC 15 2628 129639
Serrapetrona MC 17 966 130605
Belforte del Chienti MC 17 1886 132491
Poggio San Vicino MC 17 246 132737
Montefano MC 18 3541 136278
San Paolo di Jesi AN 18 933 137211
Colmurano MC 18 1263 138474
Gagliole MC 19 620 139094
Petriolo MC 19 1998 141092
Cupramontana AN 20 4756 145848
Caldarola MC 20 1823 147671
Loro Piceno MC 20 2401 150072
Camporotondo di Fiastrone MC 20 563 150635

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SW of Ancona (100861 inhabitants)
61 Km NE of Foligno (57155 inhabitants)
63 Km SE of Fano (60888 inhabitants)
73 Km SE of Pesaro (94582 inhabitants)
75 Km E of Perugia (166134 inhabitants)
81 Km NW of Teramo (54892 inhabitants)
98 Km NE of Terni (111501 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 2.0
ML 1.6
2007-02-21
17:18:30
43.313 13.274 3 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 615839
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2007-02-21 17:18:30 ± 0.21
Latitude 43.3130 ± 0.0054
Longitude 13.2740 ± 0.0136
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 615839

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1041
Semi-minor axis of confidence ellipse (meter) 598
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 133
Circular confidence region, given by single value of horizontal uncertainty (meter) 1253.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 236
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.52341
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 615839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:44:36

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 615839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:44:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FAGN.BHE. 2007-02-21T17:19:15.88 10.0 undecidable manual Pg 0 0 0
IV.FSSB.BHN. 2007-02-21T17:18:41.95 0.1 undecidable manual Pg 317 58.0974 0.057 93
IV.NRCA.SHZ. 2007-02-21T17:18:41.26 0.1 undecidable manual Pg 194 54.7008 -0.118 92
IV.SNTG.SHZ. 2007-02-21T17:18:40.17 0.1 undecidable manual Sg 257 27.6501 -0.012 99
IV.SNTG.SHZ. 2007-02-21T17:18:36.20 0.1 undecidable manual Pg 257 27.6501 0.1 97
IV.CING.HHN. 2007-02-21T17:18:33.82 0.1 undecidable manual Sg 318 9.3795 -0.139 99
IV.CING.HHN. 2007-02-21T17:18:32.61 0.1 undecidable manual Pg 318 9.3795 0.104 100
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