Earthquake with magnitude of ML 0.3 on date 20-07-2009 and time 06:07:52 (UTC) in region 4 km NW Montereale (AQ)

A magnitude ML 0.3 earthquake occured in region: 4 km NW Montereale (AQ), on

  • 20-07-2009 06:07:52 (UTC)
  • 20-07-2009 08:07:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5520, 13.2120 at 9 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
Montereale AQ 4 2581 2581
Borbona RI 8 617 3198
Capitignano AQ 8 665 3863
Cittareale RI 9 482 4345
Posta RI 10 694 5039
Cagnano Amiterno AQ 10 1369 6408
Amatrice RI 11 2657 9065
Barete AQ 13 737 9802
Campotosto AQ 13 542 10344
Pizzoli AQ 15 4326 14670
Accumoli RI 16 667 15337
Micigliano RI 17 127 15464
Antrodoco RI 18 2588 18052

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of L'Aquila (69753 inhabitants)
42 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
73 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
82 Km W of Chieti (51815 inhabitants)
83 Km W of Pescara (121014 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
95 Km NE 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 1.5
ML 0.3
2009-07-20
06:07:52
42.552 13.212 9 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 931209
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-20 06:07:52 ± 0.12
Latitude 42.5520 ± 0.0045
Longitude 13.2120 ± 0.0024
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 931209

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 443
Semi-minor axis of confidence ellipse (meter) 302
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 9
Circular confidence region, given by single value of horizontal uncertainty (meter) 538.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 196
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) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.14569
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 931209
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:44:41

Md:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 931209
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:44:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PARC.HHN. 2009-07-20T06:08:43.56 10.0 undecidable manual Pg 0 0 0
IV.LNSS.HHE. 2009-07-20T06:07:58.21 0.1 undecidable manual Sg 292 15.1737 0.042 99
IV.CAMP.HHN. 2009-07-20T06:07:58.46 0.3 undecidable manual Sg 96 16.1727 -0.015 75
IV.SAN2.EHZ. 2009-07-20T06:07:56.79 0.1 undecidable manual Sg 33 10.3785 -0.032 100
IV.LNSS.HHE. 2009-07-20T06:07:55.51 0.1 undecidable manual Pg 292 15.1737 -0.074 98
IV.CAMP.HHN. 2009-07-20T06:07:55.78 0.1 undecidable manual Pg 96 16.1727 0.018 99
IV.SAN2.EHZ. 2009-07-20T06:07:54.86 0.1 undecidable manual Pg 33 10.3785 0.054 100
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