Earthquake with magnitude of ML 1.7 on date 21-03-2020 and time 22:35:34 (Italy) in region 3 km NE Acquasanta Terme (AP)

A magnitude ML 1.7 earthquake occured in region: 3 km NE Acquasanta Terme (AP), on

  • 21-03-2020 21:35:34 (UTC)
  • 21-03-2020 22:35:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.43 at 20 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
Roccafluvione AP 8 2010 4926
Valle Castellana TE 8 977 5903
Montegallo AP 10 523 6426
Venarotta AP 11 2066 8492
Arquata del Tronto AP 11 1178 9670
Palmiano AP 12 196 9866
Ascoli Piceno AP 13 49407 59273
Rocca Santa Maria TE 14 537 59810
Montemonaco AP 15 604 60414
Folignano AP 17 9241 69655
Montefortino FM 18 1178 70833
Comunanza AP 18 3166 73999
Accumoli RI 19 667 74666
Civitella del Tronto TE 19 5116 79782
Force AP 19 1354 81136
Cortino TE 20 656 81792

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Teramo (54892 inhabitants)
49 Km N of L'Aquila (69753 inhabitants)
62 Km E of Foligno (57155 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
69 Km E of Terni (111501 inhabitants)
74 Km NW of Pescara (121014 inhabitants)
78 Km NW of Chieti (51815 inhabitants)
92 Km S of Ancona (100861 inhabitants)
92 Km E of Perugia (166134 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 1.7 2020-03-21
21:35:34
42.79 13.43 20 2020-03-21
21:43:40
Sala Sismica INGV-Roma 77445601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-21 21:35:34 ± 0.09
Latitude 42.79 ± 0.00
Longitude 13.43 ± 0.01
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77445601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 512
Semi-minor axis of confidence ellipse (meter) 125
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44067
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 77445601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-21 21:43:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2020-03-21T21:36:14.30 3.0 undecidable manual S 0.28 0
IV.EL6.EHZ. 2020-03-21T21:35:54.85 3.0 undecidable manual S -0.43 0
IV.CESI.HHZ. 2020-03-21T21:35:49.90 0.3 undecidable manual S 299 0.4407 103 0.09 68
IV.GIGS.HHZ. 2020-03-21T21:35:47.44 0.6 undecidable manual S 163 0.3561 107 0.05 47
IV.LNSS.HHZ. 2020-03-21T21:35:47.36 0.3 undecidable manual S 237 0.3471 107 0.23 68
IV.FDMO.HHZ. 2020-03-21T21:35:46.93 0.6 undecidable manual S 314 0.3507 107 -0.29 45
IV.MNTT.EHZ. 2020-03-21T21:35:46.62 0.6 undecidable manual S 24 0.2923 112 1.03 35
IV.T0110.HHZ. 2020-03-21T21:35:46.15 3.0 positive manual P -0.69 0
IV.CSP1.EHZ. 2020-03-21T21:35:46.91 0.3 undecidable manual S 331 0.3408 108 -0.05 71
IV.RM33.EHZ. 2020-03-21T21:35:46.90 0.3 undecidable manual S 210 0.3283 109 0.31 67
IV.GUMA.HHZ. 2020-03-21T21:35:45.40 0.3 undecidable manual S 345 0.277 113 0.21 69
IV.NRCA.HHZ. 2020-03-21T21:35:44.05 0.3 undecidable manual S 279 0.2374 117 -0.08 72
IV.CAMP.HHZ. 2020-03-21T21:35:44.73 0.3 undecidable manual S 184 0.2599 115 0.02 72
IV.TERO.HHZ. 2020-03-21T21:35:43.55 0.3 undecidable manual S 144 0.2122 121 0.08 73
IV.CESI.HHZ. 2020-03-21T21:35:43.03 0.3 undecidable manual P 299 0.4407 103 -0.12 68
IV.MC2.EHZ. 2020-03-21T21:35:43.60 0.3 undecidable manual S 303 0.214 121 0.09 71
IV.MF5.EHZ. 2020-03-21T21:35:43.21 0.3 undecidable manual S 6 0.1943 124 0.2 71
IV.T1299.EHN. 2020-03-21T21:35:43.39 0.6 undecidable manual S 215 0.1952 124 0.34 45
IV.SMA1.EHZ. 2020-03-21T21:35:42.84 0.3 undecidable manual S 204 0.1799 127 0.18 71
IV.RM33.EHZ. 2020-03-21T21:35:41.22 0.3 undecidable manual P 210 0.3283 109 -0.07 70
IV.MMO1.EHZ. 2020-03-21T21:35:41.26 0.3 undecidable manual S 323 0.1304 137 -0.32 70
IV.FDMO.HHZ. 2020-03-21T21:35:41.34 0.1 undecidable manual P 314 0.3507 107 -0.31 89
IV.MNTT.EHZ. 2020-03-21T21:35:41.03 0.3 undecidable manual P 24 0.2923 112 0.32 68
IV.GIGS.HHZ. 2020-03-21T21:35:41.35 0.1 undecidable manual P 163 0.3561 107 -0.4 87
IV.CSP1.EHZ. 2020-03-21T21:35:41.25 0.1 undecidable manual P 331 0.3408 108 -0.25 90
IV.LNSS.HHZ. 2020-03-21T21:35:41.62 0.3 undecidable manual P 237 0.3471 107 0.02 71
IV.MTRA.HNZ. 2020-03-21T21:35:40.01 0.3 undecidable manual S 216 0.0468 163 -0.31 71
IV.CAMP.HHZ. 2020-03-21T21:35:40.17 0.1 undecidable manual P 184 0.2599 115 -0.03 96
IV.GUMA.HHZ. 2020-03-21T21:35:40.57 0.3 undecidable manual P 345 0.277 113 0.09 71
IV.MF5.EHZ. 2020-03-21T21:35:39.20 0.1 undecidable manual P 6 0.1943 124 -0.01 97
IV.T1299.EHN. 2020-03-21T21:35:39.49 0.1 undecidable manual P 215 0.1952 124 0.25 93
IV.TERO.HHZ. 2020-03-21T21:35:39.27 0.1 undecidable manual P 144 0.2122 121 -0.21 93
IV.MC2.EHZ. 2020-03-21T21:35:39.48 0.1 undecidable manual P 303 0.214 121 -0.03 97
IV.SMA1.EHZ. 2020-03-21T21:35:39.18 0.1 undecidable manual P 204 0.1799 127 0.16 95
IV.NRCA.HHZ. 2020-03-21T21:35:39.80 0.1 negative manual P 279 0.2374 117 -0.06 96
IV.MMO1.EHZ. 2020-03-21T21:35:38.24 0.1 undecidable manual P 323 0.1304 137 -0.15 96
IV.MTRA.HNZ. 2020-03-21T21:35:37.65 0.1 undecidable manual P 216 0.0468 163 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:1.9 0.0006275 0.2 AML other m 2020-03-21T21:35:40.31
IV.MTRA.EHN. ML:1.9 0.0006185 0.18 AML other m 2020-03-21T21:35:40.32
IV.MTRA.EHE. ML:2.1 0.0010155 0.58 AML other m 2020-03-21T21:35:41.32
IV.MTRA.HNE. ML:2.1 0.001048 0.56 AML other m 2020-03-21T21:35:41.31
IV.SMA1.EHN. ML:2.1 0.00071 0.14 AML other m 2020-03-21T21:35:43.15
IV.SMA1.EHE. ML:2.1 0.0006545 0.3 AML other m 2020-03-21T21:35:43.24
IV.MF5.EHN. ML:1.6 0.0002215 0.32 AML other m 2020-03-21T21:35:43.48
IV.MF5.EHE. ML:1.6 0.000192 0.4 AML other m 2020-03-21T21:35:43.62
IV.NRCA.HHN. ML:2.2 0.000842 0.12 AML other m 2020-03-21T21:35:44.43
IV.NRCA.HHE. ML:2 0.000475 0.14 AML other m 2020-03-21T21:35:44.36
IV.TERO.HHE. ML:1.2 8.325E-5 0.58 AML other m 2020-03-21T21:35:44.64
IV.CAMP.HHE. ML:1.2 6.005E-5 0.22 AML other m 2020-03-21T21:35:45.20
IV.CAMP.HHN. ML:0.9 3.545E-5 0.98 AML other m 2020-03-21T21:35:45.22
IV.TERO.HHN. ML:1.2 8.855E-5 0.5 AML other m 2020-03-21T21:35:45.48
IV.GUMA.HHE. ML:2.1 0.000531 0.28 AML other m 2020-03-21T21:35:45.91
IV.GUMA.HHN. ML:1.9 0.0003025 1.54 AML other m 2020-03-21T21:35:45.22
IV.FDMO.HHN. ML:1.5 0.000103 0.18 AML other m 2020-03-21T21:35:47.36
IV.FDMO.HHE. ML:1.5 0.0001095 0.22 AML other m 2020-03-21T21:35:47.53
IV.RM33.EHE. ML:1.2 4.94E-5 0.16 AML other m 2020-03-21T21:35:47.94
IV.LNSS.HHN. ML:1.5 0.0001116 1.58 AML other m 2020-03-21T21:35:48.93
IV.RM33.EHN. ML:0.9 3.235E-5 0.68 AML other m 2020-03-21T21:35:48.81
IV.LNSS.HHE. ML:1.3 6.36E-5 0.14 AML other m 2020-03-21T21:35:48.58
IV.CESI.HHE. ML:1.2 3.76E-5 0.22 AML other m 2020-03-21T21:35:50.51
IV.CESI.HHN. ML:1.4 6.37E-5 1.4 AML other m 2020-03-21T21:35:51.16
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