ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.2 on date 17-03-2019 and time 15:21:45 (UTC) in region 1 km E Roccafluvione (AP)

A magnitude ML 1.2 earthquake occured in region: 1 km E Roccafluvione (AP), on

  • 17-03-2019 15:21:45 (UTC)
  • 17-03-2019 16:21:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.49 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
Roccafluvione AP 1 2010 2010
Venarotta AP 3 2066 4076
Palmiano AP 5 196 4272
Ascoli Piceno AP 7 49407 53679
Force AP 12 1354 55033
Acquasanta Terme AP 12 2916 57949
Rotella AP 12 906 58855
Folignano AP 12 9241 68096
Comunanza AP 13 3166 71262
Montegallo AP 13 523 71785
Valle Castellana TE 14 977 72762
Castignano AP 14 2796 75558
Montemonaco AP 14 604 76162
Montefalcone Appennino FM 15 424 76586
Montedinove AP 15 488 77074
Appignano del Tronto AP 15 1785 78859
Montefortino FM 15 1178 80037
Maltignano AP 16 2401 82438
Smerillo FM 17 365 82803
Montalto delle Marche AP 17 2122 84925
Civitella del Tronto TE 17 5116 90041
Amandola FM 18 3629 93670
Santa Vittoria in Matenano FM 18 1330 95000
Montelparo FM 18 778 95778
Castel di Lama AP 18 8634 104412
Offida AP 18 5058 109470
Arquata del Tronto AP 19 1178 110648
Sant'Egidio alla Vibrata TE 19 9811 120459
Rocca Santa Maria TE 19 537 120996
Monte San Martino MC 20 765 121761
Castorano AP 20 2380 124141

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Teramo (54892 inhabitants)
57 Km N of L'Aquila (69753 inhabitants)
65 Km E of Foligno (57155 inhabitants)
66 Km NW of Montesilvano (53738 inhabitants)
74 Km NW of Pescara (121014 inhabitants)
77 Km E of Terni (111501 inhabitants)
79 Km NW of Chieti (51815 inhabitants)
84 Km S of Ancona (100861 inhabitants)
94 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 1.2 2019-03-17
15:21:45
42.86 13.49 18 2019-03-17
15:25:57
Sala Sismica INGV-Roma 66635531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-17 15:21:45 ± 0.14
Latitude 42.86 ± 0.00
Longitude 13.49 ± 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 66635531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 604
Semi-minor axis of confidence ellipse (meter) 186
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) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40559
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 66635531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-17 15:25:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RM33.EHZ. 2019-03-17T15:22:00.25 0.6 undecidable manual S 210 0.4056 102 -0.07 47
IV.FDMO.HHZ. 2019-03-17T15:21:58.31 0.3 undecidable manual S 301 0.3453 105 -0.27 69
IV.TERO.HHZ. 2019-03-17T15:21:56.16 0.6 undecidable manual S 161 0.25 113 0.24 47
IV.SMA1.EHZ. 2019-03-17T15:21:56.05 0.6 undecidable manual S 207 0.2563 112 -0.03 49
IV.GUMA.HHE. 2019-03-17T15:21:55.62 0.3 undecidable manual S 331 0.2329 115 0.17 72
IV.MC2.EHZ. 2019-03-17T15:21:55.48 0.6 undecidable manual S 283 0.2275 115 0.17 48
IV.RM33.EHZ. 2019-03-17T15:21:54.03 1.0 undecidable manual P 210 0.4056 102 -0.09 23
IV.FDMO.HHZ. 2019-03-17T15:21:53.69 0.6 positive manual P 301 0.3453 105 0.57 42
IV.MF5.EHZ. 2019-03-17T15:21:52.87 0.3 undecidable manual S 350 0.1304 134 -0.05 75
IV.CSP1.EHZ. 2019-03-17T15:21:52.34 3.0 positive manual P -0.36 0
IV.MTRA.EHZ. 2019-03-17T15:21:52.70 0.6 undecidable manual S 214 0.1241 136 -0.1 49
IV.TERO.HHZ. 2019-03-17T15:21:51.52 0.6 positive manual P 161 0.25 113 -0.06 49
IV.SMA1.EHZ. 2019-03-17T15:21:51.67 0.1 positive manual P 207 0.2563 112 0 98
IV.GUMA.HHE. 2019-03-17T15:21:51.25 0.6 undecidable manual P 331 0.2329 115 -0.06 49
IV.MC2.EHZ. 2019-03-17T15:21:51.17 1.0 undecidable manual P 283 0.2275 115 -0.06 24
IV.MTRA.EHZ. 2019-03-17T15:21:49.75 0.1 undecidable manual P 214 0.1241 136 -0.03 100
IV.MF5.EHZ. 2019-03-17T15:21:49.72 0.1 undecidable manual P 350 0.1304 134 -0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.8 0.0004085 0.14 AML other m 2019-03-17T15:21:52.91
IV.MTRA.EHE. ML:1.6 0.0003195 1.92 AML other m 2019-03-17T15:21:52.98
IV.SMA1.EHN. ML:1.2 7.295E-5 0.5 AML other m 2019-03-17T15:21:56.45
IV.SMA1.EHE. ML:1 5.08E-5 0.14 AML other m 2019-03-17T15:21:56.49
IV.TERO.HHE. ML:0.8 3.19E-5 0.12 AML other m 2019-03-17T15:21:56.84
IV.TERO.HHN. ML:1.1 5.33E-5 0.76 AML other m 2019-03-17T15:21:56.46
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