Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 07-07-2019 and time 21:43:09 (Italy) in region 4 km W Acquasanta Terme (AP)

A magnitude ML 1.1 earthquake occured in region: 4 km W Acquasanta Terme (AP), on

  • 07-07-2019 19:43:09 (UTC)
  • 07-07-2019 21:43:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7620, 13.3620 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.

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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
Acquasanta Terme AP 4 2916 2916
Arquata del Tronto AP 6 1178 4094
Montegallo AP 9 523 4617
Valle Castellana TE 12 977 5594
Accumoli RI 12 667 6261
Roccafluvione AP 15 2010 8271
Montemonaco AP 16 604 8875
Amatrice RI 16 2657 11532
Rocca Santa Maria TE 16 537 12069
Venarotta AP 17 2066 14135
Palmiano AP 17 196 14331
Cortino TE 20 656 14987

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
58 Km E of Foligno (57155 inhabitants)
63 Km E of Terni (111501 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
80 Km NW of Chieti (51815 inhabitants)
88 Km E of Perugia (166134 inhabitants)
96 Km S of Ancona (100861 inhabitants)
99 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km NE of Tivoli (56533 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 		ML 1.1 2019-07-07
19:43:09		 42.7615 13.3625 17 2019-07-07
19:53:56		 Sala Sismica INGV-Roma 70339851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-07 19:43:09 ± 0.14
Latitude 42.7615 ± 0.0036
Longitude 13.3625 ± 0.0086
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70339851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 517
Semi-minor axis of confidence ellipse (meter) 414
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.02518
Epicentral distance of station farthest from the epicenter (degree) 0.34084
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 70339851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-07 19:53:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2019-07-07T19:43:22.71 0.3 undecidable manual S 324 37.8288 102 0.12 70
IV.RM33.HNZ. 2019-07-07T19:43:20.83 0.3 undecidable manual S 203 30.5472 106 0.13 71
IV.NRCA.HHZ. 2019-07-07T19:43:18.32 0.3 undecidable manual S 292 21.7671 116 -0.19 71
IV.MC2.EHZ. 2019-07-07T19:43:18.89 0.3 undecidable manual S 320 21.867 116 0.36 68
IV.T1299.EHZ. 2019-07-07T19:43:17.24 0.3 undecidable manual S 205 15.5733 127 0.14 72
IV.FDMO.HHZ. 2019-07-07T19:43:16.94 0.1 undecidable manual P 324 37.8288 102 -0.29 90
IV.RM33.HNZ. 2019-07-07T19:43:16.05 0.3 undecidable manual P 203 30.5472 106 -0.08 72
IV.LNSS.HHZ. 2019-07-07T19:43:16.26 0.3 undecidable manual P 236 31.6461 105 -0.04 72
IV.MTRA.EHZ. 2019-07-07T19:43:15.08 0.3 undecidable manual S 101 2.7972 168 -0.16 74
IV.MF5.EHZ. 2019-07-07T19:43:15.75 0.1 undecidable manual P 17 26.3514 110 0.23 92
IV.MC2.EHZ. 2019-07-07T19:43:14.78 0.3 undecidable manual P 320 21.867 116 -0.1 73
IV.T1299.EHZ. 2019-07-07T19:43:14.13 0.1 undecidable manual P 205 15.5733 127 0.08 98
IV.NRCA.HHZ. 2019-07-07T19:43:14.74 0.1 undecidable manual P 292 21.7671 116 -0.12 96
IV.MTRA.EHZ. 2019-07-07T19:43:12.89 0.1 undecidable manual P 101 2.7972 168 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.5 0.0003265 0.08 AML other m 2019-07-07T19:43:15.11
IV.SMA1.EHN. ML:1.0 0.00008380000000000002 0.12 AML other m 2019-07-07T19:43:17.09
IV.MTRA.EHN. ML:0.9 0.00008997376 0.2816 AML other m 2019-07-07T19:43:15.33
IV.NRCA.HHE. ML:1.2 0.00009984147 0.0768 AML other m 2019-07-07T19:43:18.49
IV.NRCA.HHN. ML:1.2 0.000096244255 0.1792 AML other m 2019-07-07T19:43:18.47
IV.FDMO.HHN. ML:0.5 0.000008477647 0.1792 AML other m 2019-07-07T19:43:22.68
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