Earthquake with magnitude of ML 1.9 on date 20-02-2020 and time 09:17:05 (UTC) in region 3 km E Acquasanta Terme (AP)

A magnitude ML 1.9 earthquake occured in region: 3 km E Acquasanta Terme (AP), on

  • 20-02-2020 09:17:05 (UTC)
  • 20-02-2020 10:17:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.76, 13.45 at 18 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
Acquasanta Terme AP 3 2916 2916
Valle Castellana TE 5 977 3893
Rocca Santa Maria TE 11 537 4430
Roccafluvione AP 11 2010 6440
Arquata del Tronto AP 12 1178 7618
Montegallo AP 13 523 8141
Venarotta AP 14 2066 10207
Ascoli Piceno AP 15 49407 59614
Palmiano AP 15 196 59810
Cortino TE 16 656 60466
Folignano AP 16 9241 69707
Civitella del Tronto TE 18 5116 74823
Accumoli RI 18 667 75490
Montemonaco AP 18 604 76094
Amatrice RI 20 2657 78751
Campli TE 20 7209 85960

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
64 Km W of Montesilvano (53738 inhabitants)
64 Km E of Foligno (57155 inhabitants)
69 Km E of Terni (111501 inhabitants)
71 Km W of Pescara (121014 inhabitants)
75 Km NW of Chieti (51815 inhabitants)
95 Km E of Perugia (166134 inhabitants)
95 Km S of Ancona (100861 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
Rev 100 ML 1.9 2020-02-20
09:17:05
42.76 13.45 18 2020-02-20
09:23:52
Sala Sismica INGV-Roma 76667941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-20 09:17:05 ± 0.08
Latitude 42.76 ± 0.00
Longitude 13.45 ± 0.01
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76667941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 630
Semi-minor axis of confidence ellipse (meter) 352
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 630
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.62053
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 76667941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-20 09:23:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FIR.HHZ. 2020-02-20T09:18:08.11 3.0 undecidable manual Sg 8.77 0
IT.LRNO.HNZ. 2020-02-20T09:17:53.84 3.0 undecidable manual Sg 5.2 0
IV.PTRJ.HHZ. 2020-02-20T09:17:52.64 3.0 undecidable manual Sn 0.03 0
IV.VBKN.HHZ. 2020-02-20T09:17:42.49 3.0 positive manual Pg 4.63 0
IV.EL6.EHZ. 2020-02-20T09:17:26.95 0.6 undecidable manual S 336 0.6205 97 0.78 36
IV.GIGS.HHZ. 2020-02-20T09:17:17.21 0.3 undecidable manual S 164 0.322 107 -0.28 68
IV.EL6.EHZ. 2020-02-20T09:17:17.32 0.3 undecidable manual P 336 0.6205 97 0.02 67
IV.T0110.HHZ. 2020-02-20T09:17:16.70 0.6 undecidable manual P 156 0.5846 98 0.01 45
IV.MF5.EHZ. 2020-02-20T09:17:15.14 0.3 undecidable manual S 2 0.2257 116 0.32 67
IV.CAMP.HHZ. 2020-02-20T09:17:15.12 0.3 undecidable manual S 187 0.2284 116 0.22 69
IV.MC2.EHZ. 2020-02-20T09:17:15.67 0.3 undecidable manual S 308 0.2419 114 0.41 67
IV.NRCA.HHZ. 2020-02-20T09:17:15.64 0.3 undecidable manual S 286 0.2554 113 0 71
IV.VCEL.EHZ. 2020-02-20T09:17:14.70 0.3 undecidable manual P 142 0.4667 100 0 69
IV.CESI.HHZ. 2020-02-20T09:17:14.49 0.3 undecidable manual P 301 0.4667 100 -0.21 66
IV.MMO1.EHZ. 2020-02-20T09:17:13.05 0.1 undecidable manual S 327 0.1637 127 -0.21 93
IV.SMA1.EHZ. 2020-02-20T09:17:13.45 0.3 undecidable manual S 212 0.1565 129 0.37 69
IV.TERO.HHZ. 2020-02-20T09:17:13.70 0.1 undecidable manual S 141 0.1799 124 0.05 95
IV.FDMO.HHZ. 2020-02-20T09:17:12.96 0.1 undecidable manual P 316 0.3813 104 -0.3 88
IV.GUMA.HHZ. 2020-02-20T09:17:12.11 0.1 undecidable manual P 344 0.3112 108 -0.01 95
IV.GIGS.HHZ. 2020-02-20T09:17:12.03 0.1 undecidable manual P 164 0.322 107 -0.26 91
IV.MNTT.EHZ. 2020-02-20T09:17:12.63 3.0 undecidable manual P 0.44 0
IV.RM33.EHZ. 2020-02-20T09:17:12.10 0.1 undecidable manual P 214 0.3067 108 0.07 94
IV.LNSS.HHZ. 2020-02-20T09:17:12.67 0.3 undecidable manual P 242 0.3399 106 0.09 70
IV.CSP1.EHZ. 2020-02-20T09:17:12.81 0.3 undecidable manual P 332 0.375 104 -0.35 65
IV.MTRA.HNZ. 2020-02-20T09:17:11.01 0.1 undecidable manual S 262 0.0396 164 -0.11 98
IV.NRCA.HHZ. 2020-02-20T09:17:11.18 0.1 undecidable manual P 286 0.2554 113 -0.04 95
IV.MC2.EHZ. 2020-02-20T09:17:11.06 0.1 undecidable manual P 308 0.2419 114 0.05 96
IV.TERO.HHZ. 2020-02-20T09:17:10.03 0.1 undecidable manual P 141 0.1799 124 -0.04 98
IV.MF5.EHZ. 2020-02-20T09:17:10.68 0.3 undecidable manual P 2 0.2257 116 -0.07 72
IV.CAMP.HHZ. 2020-02-20T09:17:10.85 0.1 undecidable manual P 187 0.2284 116 0.06 96
IV.MMO1.EHZ. 2020-02-20T09:17:09.71 0.1 undecidable manual P 327 0.1637 127 -0.14 95
IV.SMA1.EHZ. 2020-02-20T09:17:09.94 0.1 undecidable manual P 212 0.1565 129 0.19 94
IV.MTRA.HNZ. 2020-02-20T09:17:08.62 0.1 undecidable manual P 262 0.0396 164 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.9 0.000783 0.24 AML other m 2020-02-20T09:17:11.28
IV.MTRA.HNN. ML:1.9 0.0008025 0.24 AML other m 2020-02-20T09:17:11.28
IV.MTRA.EHE. ML:1.9 0.00071 0.66 AML other m 2020-02-20T09:17:11.48
IV.MTRA.HNE. ML:1.9 0.0007805 0.74 AML other m 2020-02-20T09:17:12.47
IV.SMA1.EHN. ML:1.9 0.0005725 0.2 AML other m 2020-02-20T09:17:13.63
IV.SMA1.EHE. ML:2 0.000651 0.62 AML other m 2020-02-20T09:17:13.70
IV.TERO.HHN. ML:2.1 0.000705 0.16 AML other m 2020-02-20T09:17:13.97
IV.TERO.HHE. ML:1.9 0.0005385 0.26 AML other m 2020-02-20T09:17:14.01
IV.CAMP.HHE. ML:1.8 0.0003165 0.24 AML other m 2020-02-20T09:17:15.58
IV.CAMP.HHN. ML:1.5 0.000159 1.38 AML other m 2020-02-20T09:17:15.30
IV.NRCA.HHN. ML:2.6 0.001775 1.84 AML other m 2020-02-20T09:17:16.00
IV.NRCA.HHE. ML:2.5 0.00152 0.08 AML other m 2020-02-20T09:17:16.04
IV.NRCA.HNN. ML:2.6 0.00174 1.84 AML other m 2020-02-20T09:17:16.00
IV.NRCA.HNE. ML:2.5 0.001355 0.1 AML other m 2020-02-20T09:17:16.05
IV.GUMA.HHE. ML:2.2 0.0005715 0.22 AML other m 2020-02-20T09:17:17.91
IV.GUMA.HNN. ML:2.2 0.0006975 1.74 AML other m 2020-02-20T09:17:18.91
IV.GUMA.HNE. ML:2 0.000386 1.84 AML other m 2020-02-20T09:17:18.97
IV.GUMA.HHN. ML:2.2 0.000611 1.78 AML other m 2020-02-20T09:17:18.05
IV.LNSS.HHN. ML:2 0.000312 1.26 AML other m 2020-02-20T09:17:19.26
IV.FDMO.HHE. ML:1.7 0.0001645 0.18 AML other m 2020-02-20T09:17:19.38
IV.CSP1.EHE. ML:1.7 0.0001467 0.34 AML other m 2020-02-20T09:17:19.55
IV.CSP1.EHN. ML:1.5 0.0001039 0.64 AML other m 2020-02-20T09:17:19.57
IV.FDMO.HHN. ML:2 0.0002655 0.36 AML other m 2020-02-20T09:17:19.57
IV.RM33.EHE. ML:1.4 9.84E-5 1.18 AML other m 2020-02-20T09:17:20.83
IV.RM33.EHN. ML:1.4 0.0001028 0.34 AML other m 2020-02-20T09:17:20.43
IV.LNSS.HHE. ML:1.8 0.000225 0.9 AML other m 2020-02-20T09:17:20.41
IV.CESI.HHE. ML:1.5 7.46E-5 0.16 AML other m 2020-02-20T09:17:22.34
IV.CESI.HHN. ML:2 0.000214 0.46 AML other m 2020-02-20T09:17:22.58
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