A magnitude ML 0.5 earthquake occured in region: 3 km W Accumoli (RI), on
and geographic coordinates (lat, lon) 42.7050, 13.2150 at 9 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 |
---|---|---|---|---|
Accumoli | RI | 3 | 667 | 667 |
Arquata del Tronto | AP | 10 | 1178 | 1845 |
Amatrice | RI | 10 | 2657 | 4502 |
Cittareale | RI | 11 | 482 | 4984 |
Norcia | PG | 14 | 4957 | 9941 |
Cascia | PG | 17 | 3217 | 13158 |
Acquasanta Terme | AP | 18 | 2916 | 16074 |
Montegallo | AP | 18 | 523 | 16597 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.5 | 2021-09-18 21:03:13 |
42.7047 | 13.2147 | 9 | 2021-09-18 21:09:11 |
Sala Sismica INGV-Roma | 95601351 |
Field | Value |
---|---|
Time (UTC) | 2021-09-18 21:03:13 ± 0.25 |
Latitude | 42.7047 ± 0.0036 |
Longitude | 13.2147 ± 0.0073 |
Depth (km) | 9 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 95601351 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 586 |
Semi-minor axis of confidence ellipse (meter) | 268 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 276 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 590.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 123 |
Number of associated phases, regardless of their use for origin computation | 13 |
Number of defining phases | 10 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.22 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.21134 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 0.5 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 95601351 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-09-18 21:09:11 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.ARVD.HHZ. | 2021-09-18T21:03:42.40 | 3.0 | undecidable | manual | S | 0.01 | 0 | |||
IV.PE3.EHZ. | 2021-09-18T21:03:34.19 | 3.0 | undecidable | manual | P | -0.93 | 0 | |||
IV.FAGN.HHZ. | 2021-09-18T21:03:34.18 | 3.0 | undecidable | manual | S | 0.14 | 0 | |||
IV.MC2.EHZ. | 2021-09-18T21:03:22.51 | 0.1 | undecidable | manual | S | 355 | 23.0547 | 111 | 0.12 | 96 |
IV.MMO1.EHZ. | 2021-09-18T21:03:22.24 | 0.1 | undecidable | manual | S | 23 | 23.4543 | 110 | -0.28 | 93 |
IV.RM33.EHZ. | 2021-09-18T21:03:21.90 | 0.3 | undecidable | manual | S | 180 | 21.7671 | 112 | -0.06 | 73 |
IV.LNSS.HHZ. | 2021-09-18T21:03:20.90 | 0.3 | undecidable | manual | S | 232 | 18.1707 | 115 | 0.06 | 74 |
IV.SMA1.EHZ. | 2021-09-18T21:03:19.24 | 0.1 | undecidable | manual | S | 130 | 12.876 | 124 | 0.02 | 100 |
IV.MC2.EHZ. | 2021-09-18T21:03:19.09 | 0.1 | undecidable | manual | P | 355 | 23.0547 | 111 | 0.31 | 92 |
IV.MMO1.EHZ. | 2021-09-18T21:03:18.73 | 0.1 | undecidable | manual | P | 23 | 23.4543 | 110 | -0.13 | 96 |
IV.RM33.EHZ. | 2021-09-18T21:03:18.58 | 0.1 | undecidable | manual | P | 180 | 21.7671 | 112 | 0.04 | 98 |
IV.SMA1.EHZ. | 2021-09-18T21:03:17.12 | 0.1 | undecidable | manual | P | 130 | 12.876 | 124 | 0.16 | 97 |
IV.LNSS.HHZ. | 2021-09-18T21:03:17.60 | 0.1 | undecidable | manual | P | 232 | 18.1707 | 115 | -0.28 | 94 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.SMA1.EHE. | ML:0.5 | 0.0000334 | 0.82 | AML | other | m | 2021-09-18T21:03:20.45 |
IV.SMA1.EHN. | ML:0.3 | 0.000025399999999999997 | 0.42 | AML | other | m | 2021-09-18T21:03:21.37 |
IV.LNSS.HHE. | ML:0.5 | 0.000024299999999999998 | 0.66 | AML | other | m | 2021-09-18T21:03:21.34 |
IV.LNSS.HHN. | ML:0.7 | 0.0000412 | 0.46 | AML | other | m | 2021-09-18T21:03:21.70 |