Earthquake with magnitude of Md 1.1 on date 28-08-2023 and time 09:03:39 (Italy) in region 2 km SW Campotosto (AQ)

A magnitude Md 1.1 earthquake occured in region: 2 km SW Campotosto (AQ), on

  • 28-08-2023 07:03:39 (UTC)
  • 28-08-2023 09:03:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5470, 13.3600 at 7 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Campotosto AQ 2 542 542
Capitignano AQ 6 665 1207
Montereale AQ 10 2581 3788
Crognaleto TE 10 1297 5085
Amatrice RI 11 2657 7742
Barete AQ 12 737 8479
Pizzoli AQ 13 4326 12805
Fano Adriano TE 15 296 13101
Cagnano Amiterno AQ 15 1369 14470
Cortino TE 15 656 15126
Pietracamela TE 16 271 15397
Cittareale RI 18 482 15879
Accumoli RI 19 667 16546
Borbona RI 19 617 17163

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km N of L'Aquila (69753 inhabitants)
31 Km W of Teramo (54892 inhabitants)
58 Km E of Terni (111501 inhabitants)
65 Km W of Montesilvano (53738 inhabitants)
70 Km W of Chieti (51815 inhabitants)
70 Km SE of Foligno (57155 inhabitants)
71 Km W of Pescara (121014 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
80 Km NE of Guidonia Montecelio (88673 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
Reviewed
Rev100
Md 1.1 2023-08-28
07:03:39
42.547 13.3602 7 2023-08-28
07:13:13
Sala Sismica INGV-Roma 120539671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-28 07:03:39 ± 0.15
Latitude 42.5470 ± 0.0045
Longitude 13.3602 ± 0.0049
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120539671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 486
Semi-minor axis of confidence ellipse (meter) 350
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 323
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 8
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) 0.19425
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 3
Magnitude information

Md:1.1

Field Value
Value 1.1
Uncertainty 0.5
Num. used stations 3
Type of magnitude Md
Reference to an origin 120539671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-28 07:13:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2023-08-28T07:03:47.67 0.3 undecidable manual S 67 21.5673 109 -0.05 74
IV.SMA1.EHZ. 2023-08-28T07:03:44.01 0.3 undecidable manual S 348 9.4794 127 0.05 75
IV.RM33.HNZ. 2023-08-28T07:03:44.86 0.3 undecidable manual S 251 12.6762 120 -0.01 76
IV.TERO.HHZ. 2023-08-28T07:03:44.46 0.3 undecidable manual P 67 21.5673 109 0.09 73
IV.RM33.HNZ. 2023-08-28T07:03:42.74 0.3 undecidable manual P 251 12.6762 120 0.01 76
IV.SMA1.EHZ. 2023-08-28T07:03:42.13 0.1 undecidable manual P 348 9.4794 127 -0.07 100
IV.ARVD.HHZ. 2023-08-28T07:03:34.92 3.0 positive manual P 0.2 0
IV.ASSB.HHZ. 2023-08-28T07:03:30.61 3.0 undecidable manual P 0.05 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