Earthquake with magnitude of ML 1.7 on date 09-04-2009 and time 01:37:21 (Italy) in region 5 km W Ocre (AQ)

A magnitude ML 1.7 earthquake occured in region: 5 km W Ocre (AQ), on

  • 08-04-2009 23:37:21 (UTC)
  • 09-04-2009 01:37:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3010, 13.4110 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ocre AQ 6 1167 1167
L'Aquila AQ 6 69753 70920
Lucoli AQ 6 1011 71931
Fossa AQ 6 721 72652
Tornimparte AQ 9 3187 75839
Sant'Eusanio Forconese AQ 10 394 76233
Rocca di Cambio AQ 10 533 76766
Villa Sant'Angelo AQ 11 424 77190
Poggio Picenze AQ 11 1136 78326
San Demetrio ne' Vestini AQ 12 1854 80180
Rocca di Mezzo AQ 14 1526 81706
Fagnano Alto AQ 15 418 82124
Scoppito AQ 15 3727 85851
Barisciano AQ 15 1828 87679
Prata d'Ansidonia AQ 16 496 88175
Pizzoli AQ 18 4326 92501
Fontecchio AQ 18 369 92870
Borgorose RI 19 4591 97461
Barete AQ 20 737 98198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km S of L'Aquila (69753 inhabitants)
47 Km SW of Teramo (54892 inhabitants)
63 Km W of Chieti (51815 inhabitants)
63 Km NE of Tivoli (56533 inhabitants)
65 Km W of Montesilvano (53738 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
69 Km W of Pescara (121014 inhabitants)
69 Km E of Terni (111501 inhabitants)
86 Km NE of Velletri (53303 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
93 Km SE of Foligno (57155 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 2.4
ML 1.7
2009-04-08
23:37:21
42.301 13.411 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 776619
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-04-08 23:37:21 ± 0.07
Latitude 42.3010 ± 0.0072
Longitude 13.4110 ± 0.0073
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 776619

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 845
Semi-minor axis of confidence ellipse (meter) 476
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 30
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66100
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.5
Num. used stations
Type of magnitude ML
Reference to an origin 776619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:41:51

Md:2.4

Field Value
Value 2.4
Uncertainty 0.5
Num. used stations
Type of magnitude Md
Reference to an origin 776619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:41:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.POFI.HHN. 2009-04-08T23:37:42.22 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHZ. 2009-04-08T23:37:39.84 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHZ. 2009-04-08T23:37:34.65 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHE. 2009-04-08T23:37:33.22 10.0 undecidable manual Pg 0 0 0
IV.SDI.SHZ. 2009-04-08T23:37:33.99 0.3 undecidable manual Pg 153 73.371 0.111 65
IV.NRCA.SHZ. 2009-04-08T23:37:32.59 0.1 undecidable manual Pg 338 63.8916 0.162 88
IV.MNS.HHZ. 2009-04-08T23:37:31.56 0.3 undecidable manual Pg 279 60.5949 -0.358 63
IV.FIAM.HHN. 2009-04-08T23:37:30.10 0.1 undecidable manual Sg 262 24.3534 -0.092 95
IV.VVLD.HHZ. 2009-04-08T23:37:30.03 0.3 undecidable manual Pg 160 50.9157 -0.392 64
IV.INTR.HHZ. 2009-04-08T23:37:30.84 0.1 undecidable manual Pg 128 51.7038 0.293 87
IV.LNSS.HHN. 2009-04-08T23:37:30.10 0.1 undecidable manual Pg 318 45.2214 0.549 83
IV.VCEL.EHZ. 2009-04-08T23:37:28.41 0.1 undecidable manual Pg 73 36.741 0.166 92
IV.PTQR.SHZ. 2009-04-08T23:37:27.30 0.1 undecidable manual Pg 182 30.9468 -0.049 95
IV.FAGN.HHZ. 2009-04-08T23:37:27.28 0.1 undecidable manual Sg 105 14.6742 -0.044 98
IV.TERO.HHZ. 2009-04-08T23:37:27.73 0.3 undecidable manual Pg 24 39.0276 -0.877 55
IV.FIAM.HHN. 2009-04-08T23:37:26.44 0.1 undecidable manual Pg 262 24.3534 0.096 95
IV.CAMP.HHZ. 2009-04-08T23:37:26.45 0.3 undecidable manual Pg 360 26.0517 -0.151 70
MN.AQU.HHE. 2009-04-08T23:37:25.26 0.1 undecidable manual Sg 353 5.994 0.013 100
IV.T0104.EHZ. 2009-04-08T23:37:25.69 0.1 undecidable manual Sg 318 8.88 -0.146 97
IV.FAGN.HHZ. 2009-04-08T23:37:24.69 0.1 undecidable manual Pg 105 14.6742 0.002 99
MN.AQU.HHE. 2009-04-08T23:37:23.52 0.1 undecidable manual Pg 353 5.994 0.04 99
IV.T0104.EHZ. 2009-04-08T23:37:23.98 0.1 undecidable manual Pg 318 8.88 0.153 97
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