A magnitude ML 0.5 earthquake occured in region: 2 km W Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.7680, 13.2740 at 10 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.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Arquata del Tronto | AP | 2 | 1178 | 1178 |
Accumoli | RI | 8 | 667 | 1845 |
Montegallo | AP | 10 | 523 | 2368 |
Acquasanta Terme | AP | 11 | 2916 | 5284 |
Norcia | PG | 15 | 4957 | 10241 |
Amatrice | RI | 15 | 2657 | 12898 |
Montemonaco | AP | 15 | 604 | 13502 |
Castelsantangelo sul Nera | MC | 17 | 281 | 13783 |
Valle Castellana | TE | 19 | 977 | 14760 |
Cittareale | RI | 19 | 482 | 15242 |
Roccafluvione | AP | 20 | 2010 | 17252 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.5 | 2021-04-26 19:17:49 |
42.7677 | 13.2738 | 10 | 2021-04-26 19:21:59 |
Sala Sismica INGV-Roma | 89498941 |
Field | Value |
---|---|
Time (UTC) | 2021-04-26 19:17:49 ± 0.08 |
Latitude | 42.7677 ± 0.0036 |
Longitude | 13.2738 ± 0.0074 |
Depth (km) | 10 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 89498941 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 569 |
Semi-minor axis of confidence ellipse (meter) | 101 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 83 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 570.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 73 |
Number of associated phases, regardless of their use for origin computation | 20 |
Number of defining phases | 20 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.24 |
Epicentral distance of station closest to the epicenter (degree) | 0.09083 |
Epicentral distance of station farthest from the epicenter (degree) | 0.32825 |
Number of stations at which the event was observed | 10 |
Number of stations from which data was used for origin computation | 10 |
Field | Value |
---|---|
Value | 0.5 |
Uncertainty | 0.3 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 89498941 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-26 19:21:59 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSP1.EHZ. | 2021-04-26T19:18:01.88 | 0.6 | undecidable | manual | S | 351 | 36.4413 | 50 | -0.44 | 44 |
IV.MF5.EHZ. | 2021-04-26T19:18:00.56 | 0.6 | undecidable | manual | S | 32 | 28.749 | 50 | 0.29 | 47 |
IV.TERO.HHZ. | 2021-04-26T19:18:00.56 | 0.6 | undecidable | manual | S | 121 | 31.3464 | 50 | -0.41 | 45 |
IV.LNSS.HNZ. | 2021-04-26T19:17:59.93 | 0.3 | undecidable | manual | S | 226 | 26.3514 | 50 | 0.28 | 70 |
IV.MC2.EHZ. | 2021-04-26T19:17:57.14 | 0.6 | undecidable | manual | S | 337 | 17.3715 | 120 | 0.26 | 48 |
IV.TERO.HHZ. | 2021-04-26T19:17:56.01 | 1.0 | negative | manual | P | 121 | 31.3464 | 50 | -0.29 | 23 |
IV.SMA1.EHZ. | 2021-04-26T19:17:56.62 | 0.6 | undecidable | manual | S | 162 | 15.9729 | 122 | 0.15 | 49 |
IV.CSP1.EHZ. | 2021-04-26T19:17:56.88 | 1.0 | undecidable | manual | P | 351 | 36.4413 | 50 | -0.2 | 23 |
IV.T1299.EHZ. | 2021-04-26T19:17:56.56 | 0.6 | undecidable | manual | S | 177 | 14.7741 | 124 | 0.45 | 46 |
IV.MF5.EHZ. | 2021-04-26T19:17:56.39 | 0.1 | undecidable | manual | P | 32 | 28.749 | 50 | 0.49 | 89 |
IV.MMO1.EHZ. | 2021-04-26T19:17:55.96 | 0.6 | undecidable | manual | S | 16 | 15.2736 | 123 | -0.28 | 48 |
IV.NRCA.HNZ. | 2021-04-26T19:17:55.99 | 0.6 | undecidable | manual | S | 299 | 14.874 | 124 | -0.15 | 49 |
IV.LNSS.HNZ. | 2021-04-26T19:17:55.37 | 0.1 | undecidable | manual | P | 226 | 26.3514 | 50 | -0.17 | 96 |
IV.MTRA.EHZ. | 2021-04-26T19:17:54.93 | 0.6 | undecidable | manual | S | 97 | 10.0788 | 135 | 0.09 | 50 |
IV.MMO1.EHZ. | 2021-04-26T19:17:53.44 | 0.6 | positive | manual | P | 16 | 15.2736 | 123 | -0.13 | 49 |
IV.NRCA.HNZ. | 2021-04-26T19:17:53.57 | 0.1 | undecidable | manual | P | 299 | 14.874 | 124 | 0.06 | 100 |
IV.SMA1.EHZ. | 2021-04-26T19:17:53.88 | 0.6 | negative | manual | P | 162 | 15.9729 | 122 | 0.19 | 49 |
IV.MC2.EHZ. | 2021-04-26T19:17:53.93 | 1.0 | undecidable | manual | P | 337 | 17.3715 | 120 | 0 | 25 |
IV.T1299.EHZ. | 2021-04-26T19:17:53.01 | 0.1 | undecidable | manual | P | 177 | 14.7741 | 124 | -0.49 | 91 |
IV.MTRA.EHZ. | 2021-04-26T19:17:52.82 | 0.6 | undecidable | manual | P | 97 | 10.0788 | 135 | 0.06 | 50 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.MTRA.EHE. | ML:0.3 | 0.000027461855 | 0.0768 | AML | other | m | 2021-04-26T19:17:55.69 |
IV.MTRA.EHN. | ML:0.2 | 0.00002072063 | 0.256 | AML | other | m | 2021-04-26T19:17:53.85 |
IV.SMA1.EHE. | ML:0.4 | 0.0000206842345 | 0.1152 | AML | other | m | 2021-04-26T19:17:56.74 |
IV.SMA1.EHN. | ML:0.4 | 0.000024414715 | 0.1152 | AML | other | m | 2021-04-26T19:17:56.93 |
IV.TERO.HHE. | ML:0.5 | 0.000015882765 | 0.1152 | AML | other | m | 2021-04-26T19:18:01.34 |
IV.TERO.HHN. | ML:0.5 | 0.00001500004 | 0.0896 | AML | other | m | 2021-04-26T19:18:00.75 |
IV.CSP1.EHE. | ML:1.2 | 0.00005312335400000001 | 0.8192 | AML | other | m | 2021-04-26T19:18:02.90 |
IV.CSP1.EHN. | ML:1.1 | 0.000044701229999999993 | 1.1392 | AML | other | m | 2021-04-26T19:18:02.77 |