A magnitude ML 1.0 earthquake occured in region: 5 km NW Accumoli (RI), on
and geographic coordinates (lat, lon) 42.7380, 13.2190 at 11 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 | 5 | 667 | 667 |
Arquata del Tronto | AP | 8 | 1178 | 1845 |
Norcia | PG | 12 | 4957 | 6802 |
Amatrice | RI | 13 | 2657 | 9459 |
Cittareale | RI | 14 | 482 | 9941 |
Montegallo | AP | 15 | 523 | 10464 |
Acquasanta Terme | AP | 16 | 2916 | 13380 |
Cascia | PG | 17 | 3217 | 16597 |
Castelsantangelo sul Nera | MC | 18 | 281 | 16878 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-08-17 16:36:46 |
42.7382 | 13.2192 | 11 | 2021-08-17 16:44:51 |
Sala Sismica INGV-Roma | 94301831 |
Field | Value |
---|---|
Time (UTC) | 2021-08-17 16:36:46 ± 0.05 |
Latitude | 42.7382 ± 0.0036 |
Longitude | 13.2192 ± 0.0073 |
Depth (km) | 11 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 94301831 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 691 |
Semi-minor axis of confidence ellipse (meter) | 160 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 245 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 690.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 140 |
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) | 0.11421 |
Epicentral distance of station farthest from the epicenter (degree) | 0.35343 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.4 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 94301831 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-17 16:44:51 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSP1.EHZ. | 2021-08-17T16:36:59.66 | 0.3 | undecidable | manual | S | 358 | 39.2274 | 50 | 0.32 | 67 |
IV.TERO.HHZ. | 2021-08-17T16:36:57.65 | 0.1 | undecidable | manual | S | 112 | 33.9438 | 50 | -0.27 | 92 |
IV.RM33.EHZ. | 2021-08-17T16:36:55.62 | 0.1 | undecidable | manual | S | 181 | 25.4523 | 50 | -0.04 | 97 |
IV.MC2.EHZ. | 2021-08-17T16:36:54.12 | 0.1 | undecidable | manual | S | 353 | 19.3695 | 50 | 0.08 | 98 |
IV.CSP1.EHZ. | 2021-08-17T16:36:53.76 | 0.1 | undecidable | manual | P | 358 | 39.2274 | 50 | -0.11 | 94 |
IV.TERO.HHZ. | 2021-08-17T16:36:53.15 | 0.3 | undecidable | manual | P | 112 | 33.9438 | 50 | 0.11 | 71 |
IV.T1299.HNN. | 2021-08-17T16:36:52.46 | 0.1 | undecidable | manual | S | 156 | 12.6762 | 131 | 0.27 | 95 |
IV.NRCA.HHZ. | 2021-08-17T16:36:52.20 | 0.1 | undecidable | manual | S | 321 | 13.5753 | 129 | -0.25 | 95 |
IV.SMA1.EHZ. | 2021-08-17T16:36:52.73 | 0.1 | undecidable | manual | S | 142 | 15.2736 | 126 | -0.17 | 96 |
IV.RM33.EHZ. | 2021-08-17T16:36:51.70 | 0.1 | undecidable | manual | P | 181 | 25.4523 | 50 | -0.04 | 97 |
IV.SMA1.EHZ. | 2021-08-17T16:36:50.24 | 0.1 | undecidable | manual | P | 142 | 15.2736 | 126 | 0.09 | 98 |
IV.MC2.EHZ. | 2021-08-17T16:36:50.83 | 0.1 | undecidable | manual | P | 353 | 19.3695 | 50 | 0.02 | 99 |
IV.T1299.HNN. | 2021-08-17T16:36:49.86 | 0.1 | undecidable | manual | P | 156 | 12.6762 | 131 | 0.12 | 98 |
IV.NRCA.HHZ. | 2021-08-17T16:36:49.88 | 0.1 | undecidable | manual | P | 321 | 13.5753 | 129 | -0.01 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHN. | ML:1.3 | 0.0001835 | 0.16 | AML | other | m | 2021-08-17T16:36:52.31 |
IV.NRCA.HHE. | ML:1.4 | 0.00022999999999999998 | 0.14 | AML | other | m | 2021-08-17T16:36:52.34 |
IV.NRCA.HNE. | ML:1.3 | 0.00021330575000000002 | 0.1536 | AML | other | m | 2021-08-17T16:36:52.35 |
IV.SMA1.EHN. | ML:0.6 | 0.000032800585 | 0.0768 | AML | other | m | 2021-08-17T16:36:53.09 |
IV.RM33.EHE. | ML:0.6 | 0.00002699011 | 0.128 | AML | other | m | 2021-08-17T16:36:55.97 |
IV.RM33.EHN. | ML:0.8 | 0.000033207199999999996 | 0.2304 | AML | other | m | 2021-08-17T16:36:55.83 |