Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 09-10-2019 and time 20:23:56 (Italy) in region 4 km NE Acquasanta Terme (AP)

A magnitude ML 1.6 earthquake occured in region: 4 km NE Acquasanta Terme (AP), on

  • 09-10-2019 18:23:56 (UTC)
  • 09-10-2019 20:23:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8050, 13.4250 at 18 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Roccafluvione AP 8 2010 4926
Montegallo AP 9 523 5449
Valle Castellana TE 10 977 6426
Venarotta AP 10 2066 8492
Arquata del Tronto AP 11 1178 9670
Palmiano AP 11 196 9866
Montemonaco AP 13 604 10470
Ascoli Piceno AP 14 49407 59877
Rocca Santa Maria TE 16 537 60414
Montefortino FM 17 1178 61592
Folignano AP 17 9241 70833
Comunanza AP 17 3166 73999
Force AP 19 1354 75353
Accumoli RI 19 667 76020

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Teramo (54892 inhabitants)
50 Km N of L'Aquila (69753 inhabitants)
61 Km E of Foligno (57155 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
69 Km E of Terni (111501 inhabitants)
75 Km NW of Pescara (121014 inhabitants)
79 Km NW of Chieti (51815 inhabitants)
91 Km S of Ancona (100861 inhabitants)
91 Km E of Perugia (166134 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
Bulletin
Rev1000 		ML 1.6 2019-10-09
18:23:56		 42.8047 13.4248 19 2020-02-28
16:41:58		 Bollettino Sismico Italiano INGV 73407051
Reviewed
Rev100 		ML 1.6 2019-10-09
18:23:56		 42.8053 13.4237 19 2019-10-09
18:29:04		 Sala Sismica INGV-Roma 73165031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-09 18:23:56 ± 0.09
Latitude 42.8047 ± 0.0027
Longitude 13.4248 ± 0.0061
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73407051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 480
Semi-minor axis of confidence ellipse (meter) 102
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.20689
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 19
Type of magnitude ML
Reference to an origin 73407051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-23 09:44:05

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 73165031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-09 18:29:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATTE.HHZ. 2019-10-09T18:24:28.14 3.0 undecidable manual S 1.07 0
IV.SRES.HHZ. 2019-10-09T18:24:25.36 3.0 undecidable manual S -1.76 0
IV.PARC.HHZ. 2019-10-09T18:24:17.03 3.0 negative manual P 133.9659 -1.65 0
IV.CESI.HHE. 2019-10-09T18:24:11.90 0.6 undecidable manual S 298 47.7189 102 -0.09 46
IV.GIGS.HHZ. 2019-10-09T18:24:10.00 0.6 undecidable manual S 163 40.8258 105 -0.19 47
IT.MTCL.HGZ. 2019-10-09T18:24:10.10 0.6 undecidable manual S 301 40.4262 105 0.01 47
IV.LNSS.HHZ. 2019-10-09T18:24:10.20 0.6 undecidable manual S 235 38.5281 106 0.61 42
IV.CSP1.EHZ. 2019-10-09T18:24:09.32 3.0 undecidable manual S 36.5412 0.24 0
IV.RM33.EHZ. 2019-10-09T18:24:09.40 0.6 undecidable manual S 208 37.0296 107 0.19 46
IV.FDMO.HHZ. 2019-10-09T18:24:09.10 0.6 undecidable manual S 313 37.629 106 -0.25 45
IV.CAMP.HHZ. 2019-10-09T18:24:07.40 0.3 undecidable manual S 182 29.8479 112 0 72
IV.ARRO.EHZ. 2019-10-09T18:24:07.10 0.6 undecidable manual P 245 59.2962 99 -0.12 45
IV.GUMA.HHZ. 2019-10-09T18:24:07.80 0.3 undecidable manual S 346 29.5482 112 0.48 66
IV.NRCA.HHZ. 2019-10-09T18:24:06.30 0.3 undecidable manual S 277 25.4523 116 -0.04 72
IV.T1299.HNN. 2019-10-09T18:24:06.00 0.3 undecidable manual S 212 22.1556 121 0.44 68
IV.CESI.HHE. 2019-10-09T18:24:05.39 0.6 undecidable manual P 298 47.7189 102 -0.09 46
IV.MC2.EHZ. 2019-10-09T18:24:05.60 0.6 undecidable manual S 302 22.5552 120 -0.04 48
IV.MF5.EHZ. 2019-10-09T18:24:05.50 0.3 undecidable manual S 8 20.4684 123 0.32 69
IV.SMA1.EHZ. 2019-10-09T18:24:05.00 0.6 undecidable manual S 201 20.6682 123 -0.22 47
IV.LNSS.HHZ. 2019-10-09T18:24:04.01 0.1 positive manual P 235 38.5281 106 -0.09 94
IV.GIGS.HHZ. 2019-10-09T18:24:04.39 0.6 undecidable manual P 163 40.8258 105 -0.05 48
IT.MTCL.HGZ. 2019-10-09T18:24:04.38 0.6 undecidable manual P 301 40.4262 105 0 48
IV.MMO1.EHZ. 2019-10-09T18:24:03.50 0.6 undecidable manual S 323 13.1757 138 -0.19 48
IV.RM33.EHZ. 2019-10-09T18:24:03.76 0.1 positive manual P 208 37.0296 107 -0.11 94
IV.FDMO.HHZ. 2019-10-09T18:24:03.69 0.6 undecidable manual P 313 37.629 106 -0.27 45
IV.CAMP.HHZ. 2019-10-09T18:24:02.73 0.1 positive manual P 182 29.8479 112 -0.1 96
IV.GUMA.HHZ. 2019-10-09T18:24:02.72 0.3 undecidable manual P 346 29.5482 112 -0.06 72
IV.NRCA.HHZ. 2019-10-09T18:24:02.06 0.3 undecidable manual P 277 25.4523 116 -0.15 71
IV.MTRA.HNZ. 2019-10-09T18:24:02.50 0.6 undecidable manual S 203 5.7942 160 -0.17 49
IV.OFFI.HHZ. 2019-10-09T18:24:02.62 0.6 undecidable manual P 56 25.6521 116 0.38 45
IV.SMA1.EHZ. 2019-10-09T18:24:01.58 0.3 undecidable manual P 201 20.6682 123 0.01 74
IV.MC2.EHZ. 2019-10-09T18:24:01.76 0.3 undecidable manual P 302 22.5552 120 -0.05 73
IV.T1299.HNN. 2019-10-09T18:24:01.92 0.1 positive manual P 212 22.1556 121 0.16 95
IV.MF5.EHZ. 2019-10-09T18:24:01.58 0.1 positive manual P 8 20.4684 123 0.03 98
IV.MTRA.HNZ. 2019-10-09T18:24:00.01 0.1 positive manual P 203 5.7942 160 -0.09 100
IV.MMO1.EHZ. 2019-10-09T18:24:00.45 0.3 undecidable manual P 323 13.1757 138 -0.23 71
IV.CSP1.EHZ. 2019-10-09T18:23:59.11 3.0 undecidable manual P 36.5412 -4.69 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.4 0.00023256365 0.0896 AML other m 2019-10-09T18:24:02.97
IV.MTRA.HNE. ML:1.4 0.0002147413 0.1024 AML other m 2019-10-09T18:24:02.97
IV.MTRA.HNN. ML:1.8 0.0005865705 0.1152 AML other m 2019-10-09T18:24:02.62
IV.MTRA.EHN. ML:1.8 0.00058258685 0.1024 AML other m 2019-10-09T18:24:02.62
IV.SMA1.EHE. ML:1.9 0.0004968084500000001 0.192 AML other m 2019-10-09T18:24:05.67
IV.MF5.EHE. ML:1.6 0.00020834515 0.4352 AML other m 2019-10-09T18:24:05.81
IV.SMA1.EHN. ML:1.9 0.000497 0.2 AML other m 2019-10-09T18:24:05.66
IV.MF5.EHN. ML:1.6 0.00023183195 0.32 AML other m 2019-10-09T18:24:05.83
IV.GUMA.HHE. ML:1.9 0.00035540225000000003 0.256 AML other m 2019-10-09T18:24:08.03
IV.GUMA.HHN. ML:1.6 0.0001796832 0.3968 AML other m 2019-10-09T18:24:09.15
IV.GUMA.HNE. ML:1.8 0.0002778569 0.2944 AML other m 2019-10-09T18:24:08.02
IV.CAMP.HHE. ML:1.7 0.00022032180000000002 0.2688 AML other m 2019-10-09T18:24:07.74
IV.CAMP.HHN. ML:1.5 0.00012959385000000002 0.2432 AML other m 2019-10-09T18:24:07.78
IV.FDMO.HHN. ML:1.2 0.000048630260000000005 0.1408 AML other m 2019-10-09T18:24:09.60
IV.FDMO.HHE. ML:1.1 0.000037833005 0.1792 AML other m 2019-10-09T18:24:09.33
IV.RM33.EHN. ML:1.4 0.000089028545 0.1152 AML other m 2019-10-09T18:24:09.89
IV.RM33.EHE. ML:1.4 0.00008690465499999999 0.1792 AML other m 2019-10-09T18:24:10.07
IV.LNSS.HHE. ML:1.4 0.000083845165 0.1152 AML other m 2019-10-09T18:24:11.18
IV.LNSS.HHN. ML:1.3 0.000071137475 0.1408 AML other m 2019-10-09T18:24:10.77
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