Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 15-11-2020 and time 20:40:22 (Italy) in region Costa Marchigiana Anconetana (Ancona)

A magnitude ML 1.0 earthquake occured in region: Costa Marchigiana Anconetana (Ancona), on

  • 15-11-2020 19:40:22 (UTC)
  • 15-11-2020 20:40:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.76, 13.26 at 10 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.

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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
Senigallia AN 7 45027 45027
Mondolfo PU 13 14277 59304
Montemarciano AN 14 9992 69296
San Costanzo PU 15 4786 74082
Trecastelli AN 16 7625 81707
Monte San Vito AN 18 6848 88555
Morro d'Alba AN 19 1903 90458
Ostra AN 19 6875 97333
Chiaravalle AN 19 14796 112129
Falconara Marittima AN 19 26565 138694
Monte Porzio PU 19 2836 141530

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Fano (60888 inhabitants)
26 Km NW of Ancona (100861 inhabitants)
32 Km SE of Pesaro (94582 inhabitants)
65 Km SE of Rimini (147750 inhabitants)
92 Km E of Cesena (96758 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 2020-11-15
19:40:22		 43.76 13.26 10 2020-11-15
19:54:21		 Sala Sismica INGV-Roma 84753461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-15 19:40:22 ± 0.18
Latitude 43.76 ± 0.01
Longitude 13.26 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84753461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1031
Semi-minor axis of confidence ellipse (meter) 475
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 201
Circular confidence region, given by single value of horizontal uncertainty (meter) 1030
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 189
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.06295
Epicentral distance of station farthest from the epicenter (degree) 0.67359
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 84753461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-15 19:54:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-11-15T19:40:38.22 0.6 undecidable manual S 195 0.4506 50 -0.04 47
IV.CING.HNN. 2020-11-15T19:40:36.43 0.6 undecidable manual S 187 0.3921 50 -0.09 47
IV.MPAG.EHZ. 2020-11-15T19:40:36.66 0.6 undecidable manual S 250 0.3876 50 0.25 46
IV.PESA.HHN. 2020-11-15T19:40:35.62 0.6 undecidable manual S 300 0.3516 50 0.27 46
IV.AOI.HHE. 2020-11-15T19:40:35.17 0.6 undecidable manual S 131 0.3256 50 0.6 42
IV.CSP1.EHZ. 2020-11-15T19:40:34.75 1.0 undecidable manual P 184 0.6736 50 -0.52 20
IV.ARVD.HHZ. 2020-11-15T19:40:34.92 0.3 undecidable manual S 221 0.3534 50 -0.47 66
IV.CRTC.HHZ. 2020-11-15T19:40:33.35 0.6 undecidable manual S 271 0.2743 50 0.31 46
IV.PCRO.HNE. 2020-11-15T19:40:32.48 0.3 undecidable manual S 129 0.25 50 0.15 72
IV.COR1.EHZ. 2020-11-15T19:40:32.23 0.3 undecidable manual S 235 0.2311 111 0.55 66
IV.TRE1.HNE. 2020-11-15T19:40:32.09 0.1 undecidable manual P 175 0.4542 50 0.57 84
IV.EL6.EHZ. 2020-11-15T19:40:30.85 0.6 positive manual P 195 0.4506 50 -0.6 41
IV.MPAG.EHZ. 2020-11-15T19:40:30.89 0.6 undecidable manual P 250 0.3876 50 0.5 43
IV.ARVD.HHZ. 2020-11-15T19:40:29.76 0.1 undecidable manual P 221 0.3534 50 -0.04 97
IV.CING.HNN. 2020-11-15T19:40:29.92 0.1 undecidable manual P 187 0.3921 50 -0.53 86
IV.PESA.HHN. 2020-11-15T19:40:29.41 0.1 undecidable manual P 300 0.3516 50 -0.36 90
IV.CRTC.HHZ. 2020-11-15T19:40:28.48 0.6 positive manual P 271 0.2743 50 0.04 49
IV.AOI.HHE. 2020-11-15T19:40:28.99 0.1 undecidable manual P 131 0.3256 50 -0.33 91
IV.PCRO.HNE. 2020-11-15T19:40:28.32 0.1 undecidable manual P 129 0.25 50 0.29 94
IV.COR1.EHZ. 2020-11-15T19:40:27.48 0.1 undecidable manual P 235 0.2311 111 -0.18 96
IV.SENI.HNZ. 2020-11-15T19:40:26.40 0.6 undecidable manual S 200 0.063 144 0.09 51
IV.SENI.HNZ. 2020-11-15T19:40:24.41 0.1 undecidable manual P 200 0.063 144 -0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SENI.HNN. ML:2.3 0.003045 0.16 AML other m 2020-11-15T19:40:26.83
IV.SENI.HNE. ML:2.1 0.00212 0.32 AML other m 2020-11-15T19:40:26.92
IV.ARVD.HHN. ML:0.8 2.005E-5 1.4 AML other m 2020-11-15T19:40:35.14
IV.SENI.EHE. ML:1.2 0.0002433386 0.0768 AML other m 2020-11-15T19:40:26.60
IV.SENI.EHN. ML:1.3 0.00032067605 0.0768 AML other m 2020-11-15T19:40:26.92
IV.COR1.EHE. ML:1.2 8.931703845E-5 0.1152 AML other m 2020-11-15T19:40:32.54
IV.COR1.EHN. ML:1.4 0.0001440552 0.1408 AML other m 2020-11-15T19:40:32.38
IV.CRTC.HHE. ML:0.8 3.1141155E-5 0.3584 AML other m 2020-11-15T19:40:39.83
IV.CRTC.HHN. ML:0.9 3.680463E-5 0.3712 AML other m 2020-11-15T19:40:33.82
IV.ARVD.HHE. ML:0.6 1.31300495E-5 0.8192 AML other m 2020-11-15T19:40:35.32
IV.MPAG.EHE. ML:0.8 1.802949E-5 0.32 AML other m 2020-11-15T19:40:39.21
IV.MPAG.EHN. ML:0.8 1.8327155E-5 0.4224 AML other m 2020-11-15T19:40:38.30
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download