Earthquake with magnitude of ML 1.0 on date 16-09-2021 and time 17:57:05 (UTC) in region 3 km E Campotosto (AQ)

A magnitude ML 1.0 earthquake occured in region: 3 km E Campotosto (AQ), on

  • 16-09-2021 17:57:05 (UTC)
  • 16-09-2021 19:57:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.547, 13.41 at 16 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 4 542 542
Crognaleto TE 6 1297 1839
Capitignano AQ 9 665 2504
Fano Adriano TE 11 296 2800
Cortino TE 12 656 3456
Pietracamela TE 12 271 3727
Amatrice RI 14 2657 6384
Montereale AQ 14 2581 8965
Barete AQ 15 737 9702
Pizzoli AQ 15 4326 14028
Cagnano Amiterno AQ 18 1369 15397
Rocca Santa Maria TE 18 537 15934
Montorio al Vomano TE 19 8218 24152
Tossicia TE 20 1406 25558

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km N of L'Aquila (69753 inhabitants)
27 Km W of Teramo (54892 inhabitants)
61 Km W of Montesilvano (53738 inhabitants)
63 Km E of Terni (111501 inhabitants)
66 Km W of Chieti (51815 inhabitants)
67 Km W of Pescara (121014 inhabitants)
73 Km SE of Foligno (57155 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.0 2021-09-16
17:57:05
42.5473 13.4103 16 2021-09-16
18:03:56
Sala Sismica INGV-Roma 95516801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-16 17:57:05 ± 0.09
Latitude 42.5473 ± 0.0054
Longitude 13.4103 ± 0.0061
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95516801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 518
Semi-minor axis of confidence ellipse (meter) 444
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 203
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40649
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 95516801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-16 18:03:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARRO.EHZ. 2021-09-16T17:57:14.79 3.0 undecidable manual Pn 0.33 0
IV.MTRA.EHZ. 2021-09-16T17:57:13.92 0.3 undecidable manual S 357 0.2095 112 -0.2 72
IV.LRP.EHZ. 2021-09-16T17:57:13.96 3.0 undecidable manual Pn 0.11 0
IV.GAVE.EHZ. 2021-09-16T17:57:13.71 0.6 undecidable manual P 291 0.4065 98 0.08 47
IV.GIGS.HHZ. 2021-09-16T17:57:12.41 0.3 undecidable manual S 128 0.152 122 -0.2 73
IV.RM33.EHZ. 2021-09-16T17:57:12.30 0.3 undecidable manual S 255 0.1493 123 -0.24 72
IV.LNSS.HHZ. 2021-09-16T17:57:11.53 1.0 undecidable manual P 282 0.2779 104 0.06 24
IV.SMA1.EHZ. 2021-09-16T17:57:11.39 0.3 undecidable manual S 326 0.0998 137 -0.03 76
IV.TST02.HHZ. 2021-09-16T17:57:11.45 3.0 undecidable manual P -0.08 0
IV.MTRA.EHZ. 2021-09-16T17:57:10.39 0.3 undecidable manual P 357 0.2095 112 0.03 74
IV.CAMP.HHN. 2021-09-16T17:57:10.31 0.3 undecidable manual S 185 0.0117 174 -0.02 77
IV.RM33.EHZ. 2021-09-16T17:57:09.59 0.6 negative manual P 255 0.1493 123 0.15 49
IV.GIGS.HHZ. 2021-09-16T17:57:09.52 0.1 undecidable manual P 128 0.152 122 0.04 100
IV.SMA1.EHZ. 2021-09-16T17:57:09.00 1.0 undecidable manual P 326 0.0998 137 0.21 24
IV.CAMP.HHN. 2021-09-16T17:57:08.39 0.1 undecidable manual P 185 0.0117 174 0.23 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.7 4.37E-5 1.44 AML other m 2021-09-16T17:57:11.90
IV.SMA1.EHN. ML:0.9 6.48E-5 0.36 AML other m 2021-09-16T17:57:12.21
IV.RM33.EHE. ML:1.2 0.0001247 0.24 AML other m 2021-09-16T17:57:12.73
IV.RM33.EHN. ML:1 7.7E-5 0.88 AML other m 2021-09-16T17:57:12.64
IV.MTRA.EHE. ML:0.8 3.29E-5 0.18 AML other m 2021-09-16T17:57:14.36
IV.MTRA.EHN. ML:0.9 4.655E-5 0.24 AML other m 2021-09-16T17:57:14.57
IV.LNSS.HHE. ML:1.1 5.94E-5 0.54 AML other m 2021-09-16T17:57:16.66
IV.LNSS.HHN. ML:1.2 6.685E-5 0.78 AML other m 2021-09-16T17:57:17.41
IV.GAVE.EHE. ML:1.2 3.795E-5 0.16 AML other m 2021-09-16T17:57:20.17
IV.GAVE.EHN. ML:1.2 3.8E-5 1.4 AML other m 2021-09-16T17:57:20.12
IV.RM33.HNE. ML:1.1 9.6683205E-5 0.1792 AML other m 2021-09-16T17:57:12.96
IV.ARRO.EHE. ML:0.9 1.904416E-5 0.1792 AML other m 2021-09-16T17:57:22.17
IV.ARRO.EHN. ML:0.9 1.928661E-5 0.1664 AML other m 2021-09-16T17:57:23.54
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