Earthquake with magnitude of ML 0.4 on date 25-07-2009 and time 06:46:48 (Italy) in region 4 km SE Cittareale (RI)

A magnitude ML 0.4 earthquake occured in region: 4 km SE Cittareale (RI), on

  • 25-07-2009 04:46:48 (UTC)
  • 25-07-2009 06:46:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5890, 13.1880 at 11 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
Cittareale RI 4 482 482
Montereale AQ 9 2581 3063
Amatrice RI 10 2657 5720
Borbona RI 10 617 6337
Posta RI 10 694 7031
Capitignano AQ 12 665 7696
Accumoli RI 13 667 8363
Cagnano Amiterno AQ 15 1369 9732
Campotosto AQ 15 542 10274
Barete AQ 17 737 11011
Leonessa RI 19 2435 13446
Micigliano RI 19 127 13573
Pizzoli AQ 19 4326 17899

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
44 Km E of Terni (111501 inhabitants)
57 Km SE of Foligno (57155 inhabitants)
76 Km NE of Guidonia Montecelio (88673 inhabitants)
76 Km NE of Tivoli (56533 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
85 Km W of Chieti (51815 inhabitants)
85 Km W of Pescara (121014 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
97 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 1.6
ML 0.4
2009-07-25
04:46:48
42.589 13.188 11 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 934829
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-25 04:46:48 ± 0.2
Latitude 42.5890 ± 0.0126
Longitude 13.1880 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 934829

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1432
Semi-minor axis of confidence ellipse (meter) 332
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 168
Circular confidence region, given by single value of horizontal uncertainty (meter) 1456.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 218
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25091
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 934829
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:49:05

Md:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 934829
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:49:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHE. 2009-07-25T04:46:58.73 0.3 undecidable manual Sg 347 27.8499 0.093 72
IV.NRCA.HHE. 2009-07-25T04:46:54.30 0.1 undecidable manual Pg 347 27.8499 -0.122 95
IV.LNSS.HHN. 2009-07-25T04:46:54.24 0.1 undecidable manual Sg 277 12.1767 -0.046 99
IV.SAN2.EHZ. 2009-07-25T04:46:53.47 0.1 undecidable manual Sg 59 8.88 -0.022 100
IV.SAN2.EHZ. 2009-07-25T04:46:51.49 0.1 undecidable manual Pg 59 8.88 0.038 100
IV.LNSS.HHN. 2009-07-25T04:46:51.99 0.1 undecidable manual Pg 277 12.1767 0.079 98
IV.ILLI.HHN. 2009-07-25T04:46:46.15 10.0 undecidable manual Pg 0 0 0
IV.T0104.EHN. 2009-07-25T04:46:34.40 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHN. 2009-07-25T04:46:27.50 10.0 undecidable manual Sg 0 0 0
IV.CESX.HHN. 2009-07-25T04:46:26.28 10.0 undecidable manual Pg 0 0 0
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