Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 04-07-2009 and time 03:50:53 (UTC) in region 6 km SE Cittareale (RI)

A magnitude ML 1.7 earthquake occured in region: 6 km SE Cittareale (RI), on

  • 04-07-2009 03:50:53 (UTC)
  • 04-07-2009 05:50:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5740, 13.1990 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.

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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 6 482 482
Montereale AQ 7 2581 3063
Borbona RI 9 617 3680
Amatrice RI 10 2657 6337
Posta RI 10 694 7031
Capitignano AQ 10 665 7696
Cagnano Amiterno AQ 13 1369 9065
Accumoli RI 14 667 9732
Campotosto AQ 14 542 10274
Barete AQ 15 737 11011
Pizzoli AQ 17 4326 15337
Micigliano RI 18 127 15464
Leonessa RI 19 2435 17899
Antrodoco RI 20 2588 20487

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
45 Km E of Terni (111501 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
75 Km NE of Guidonia Montecelio (88673 inhabitants)
75 Km NE of Tivoli (56533 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
83 Km W of Chieti (51815 inhabitants)
84 Km W of Pescara (121014 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
96 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 		ML 1.7 2009-07-04
03:50:53		 42.574 13.199 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 915679
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-04 03:50:53 ± 0.06
Latitude 42.5740 ± 0.0036
Longitude 13.1990 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 915679

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 476
Semi-minor axis of confidence ellipse (meter) 167
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.80040
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 915679
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:25:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2009-07-04T03:51:23.23 10.0 undecidable manual Sg 0 0 0
IV.MURB.HHZ. 2009-07-04T03:51:16.02 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2009-07-04T03:51:16.96 10.0 undecidable manual Pg 0 0 0
IV.SDI.SHZ. 2009-07-04T03:51:14.43 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHN. 2009-07-04T03:51:13.46 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHE. 2009-07-04T03:51:10.32 0.6 undecidable manual Sg 333 53.4021 0.209 45
IV.FDMO.HHE. 2009-07-04T03:51:10.07 0.3 undecidable manual Sg 350 52.1034 0.327 65
IV.MNS.HHZ. 2009-07-04T03:51:08.55 0.6 undecidable manual Sg 244 47.3193 0.083 46
IV.CING.HHZ. 2009-07-04T03:51:08.82 0.6 undecidable manual Pg 360 88.8444 0.388 40
IV.MTCE.HHZ. 2009-07-04T03:51:08.46 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHN. 2009-07-04T03:51:05.49 0.6 undecidable manual Pg 195 71.6727 -0.282 42
IV.ASSB.HHZ. 2009-07-04T03:51:05.30 0.3 undecidable manual Pg 320 68.0763 0.074 67
IV.PTQR.SHZ. 2009-07-04T03:51:04.84 10.0 undecidable manual Pg 0 0 0
MN.AQU.HHZ. 2009-07-04T03:51:04.54 0.1 undecidable manual Sg 146 29.5482 0.812 77
IV.OFFI.HHZ. 2009-07-04T03:51:04.18 0.3 undecidable manual Pg 45 56.2992 0.769 56
IV.TERO.HHZ. 2009-07-04T03:51:04.32 0.1 undecidable manual Sg 81 33.4443 -0.457 88
IV.FIAM.HHN. 2009-07-04T03:51:04.82 0.1 undecidable manual Sg 191 34.6431 -0.268 91
IV.NRCA.SHZ. 2009-07-04T03:51:03.38 0.1 undecidable manual Sg 346 29.5482 -0.359 90
IV.T0104.EHZ. 2009-07-04T03:51:03.08 0.1 undecidable manual Sg 154 26.3514 0.202 94
IV.VCEL.EHE. 2009-07-04T03:51:03.77 0.6 undecidable manual Pg 111 56.0994 0.387 43
IV.FDMO.HHE. 2009-07-04T03:51:02.65 0.1 undecidable manual Pg 350 52.1034 -0.109 91
IV.CESI.HHE. 2009-07-04T03:51:02.97 0.3 undecidable manual Pg 333 53.4021 -0.002 70
IV.CESX.HHN. 2009-07-04T03:51:02.64 0.6 undecidable manual Pg 275 50.7159 0.087 46
IV.MNS.HHZ. 2009-07-04T03:51:01.83 0.3 undecidable manual Pg 244 47.3193 -0.192 68
IV.FIAM.HHN. 2009-07-04T03:50:59.87 0.1 positive manual Pg 191 34.6431 -0.201 92
IV.NRCA.SHZ. 2009-07-04T03:50:59.13 0.1 positive manual Pg 346 29.5482 -0.163 94
IV.LNSS.HHZ. 2009-07-04T03:50:59.16 0.1 undecidable manual Sg 284 13.3755 0.079 98
MN.AQU.HHZ. 2009-07-04T03:50:59.31 0.1 undecidable manual Pg 146 29.5482 0.023 97
IV.TERO.HHZ. 2009-07-04T03:50:59.50 0.1 undecidable manual Pg 81 33.4443 -0.392 89
IV.T0104.EHZ. 2009-07-04T03:50:58.65 0.1 undecidable manual Pg 154 26.3514 -0.146 95
IV.T0107.HLN. 2009-07-04T03:50:58.53 0.1 undecidable manual Sg 161 11.9769 -0.169 97
IV.SAN2.EHZ. 2009-07-04T03:50:57.99 0.1 undecidable manual Sg 47 9.1797 -0.023 100
IV.SAN2.EHZ. 2009-07-04T03:50:56.08 0.1 undecidable manual Pg 47 9.1797 0.093 99
IV.T0107.HLN. 2009-07-04T03:50:56.39 0.1 undecidable manual Pg 161 11.9769 0.006 100
IV.LNSS.HHZ. 2009-07-04T03:50:56.73 0.1 negative manual Pg 284 13.3755 0.127 97
IV.ESLN.HHN. 2009-07-04T03:50:53.15 10.0 undecidable manual Pg 0 0 0
IV.CDCA.EHE. 2009-07-04T03:50:35.90 10.0 undecidable manual Pg 0 0 0
IV.CRAC.EHN. 2009-07-04T03:50:30.18 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