A magnitude ML 0.6 earthquake occured in region: 3 km S Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.7500, 13.2990 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 |
---|---|---|---|---|
Arquata del Tronto | AP | 3 | 1178 | 1178 |
Accumoli | RI | 7 | 667 | 1845 |
Acquasanta Terme | AP | 9 | 2916 | 4761 |
Montegallo | AP | 11 | 523 | 5284 |
Amatrice | RI | 13 | 2657 | 7941 |
Valle Castellana | TE | 16 | 977 | 8918 |
Montemonaco | AP | 17 | 604 | 9522 |
Norcia | PG | 17 | 4957 | 14479 |
Cittareale | RI | 18 | 482 | 14961 |
Roccafluvione | AP | 19 | 2010 | 16971 |
Rocca Santa Maria | TE | 20 | 537 | 17508 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.6 | 2021-02-20 02:40:44 |
42.7495 | 13.299 | 11 | 2021-02-20 02:52:02 |
Sala Sismica INGV-Roma | 87311281 |
Field | Value |
---|---|
Time (UTC) | 2021-02-20 02:40:44 ± 0.06 |
Latitude | 42.7495 ± 0.0045 |
Longitude | 13.2990 ± 0.0024 |
Depth (km) | 11 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 87311281 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 460 |
Semi-minor axis of confidence ellipse (meter) | 200 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 9 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 460.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 135 |
Number of associated phases, regardless of their use for origin computation | 14 |
Number of defining phases | 10 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.12 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.25721 |
Number of stations at which the event was observed | 9 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 0.6 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 87311281 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-02-20 02:52:02 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.IOCA.HHZ. | 2021-02-20T02:41:42.45 | 3.0 | undecidable | manual | Sg | 0.21 | 0 | |||
IV.MCI.EHZ. | 2021-02-20T02:41:28.32 | 3.0 | undecidable | manual | Sg | 1.21 | 0 | |||
IV.CSP1.EHZ. | 2021-02-20T02:41:04.95 | 3.0 | undecidable | manual | Sg | 2.29 | 0 | |||
IV.TERO.HHZ. | 2021-02-20T02:40:54.69 | 0.6 | undecidable | manual | S | 119 | 28.5492 | 90 | -0.22 | 61 |
IV.MC2.EHZ. | 2021-02-20T02:40:52.82 | 0.6 | undecidable | manual | S | 334 | 20.0688 | 90 | 0.17 | 65 |
IV.MMO1.EHZ. | 2021-02-20T02:40:51.71 | 0.6 | undecidable | manual | S | 8 | 16.7721 | 90 | -0.06 | 65 |
IV.NRCA.HHZ. | 2021-02-20T02:40:51.81 | 0.6 | undecidable | manual | S | 302 | 17.6712 | 90 | -0.2 | 65 |
IV.SMA1.EHZ. | 2021-02-20T02:40:50.77 | 0.6 | undecidable | manual | S | 167 | 13.4754 | 93 | -0.13 | 65 |
IV.TERO.HHZ. | 2021-02-20T02:40:50.51 | 1.0 | undecidable | manual | P | 119 | 28.5492 | 90 | -0.14 | 31 |
IV.MC2.EHZ. | 2021-02-20T02:40:49.46 | 1.0 | undecidable | manual | P | 334 | 20.0688 | 90 | 0.12 | 33 |
IV.MMO1.EHZ. | 2021-02-20T02:40:48.85 | 0.6 | undecidable | manual | P | 8 | 16.7721 | 90 | 0.01 | 67 |
IV.NRCA.HHZ. | 2021-02-20T02:40:48.95 | 0.3 | undecidable | manual | P | 302 | 17.6712 | 90 | -0.03 | 100 |
IV.SMA1.EHZ. | 2021-02-20T02:40:48.49 | 0.3 | negative | manual | P | 167 | 13.4754 | 93 | 0.16 | 99 |
IV.BARO.EHZ. | 2021-02-20T02:40:47.80 | 3.0 | undecidable | manual | P | 1.36 | 0 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.SMA1.EHE. | ML:0.4 | 0.0000264 | 0.7 | AML | other | m | 2021-02-20T02:40:51.21 |
IV.SMA1.EHN. | ML:0.5 | 0.00003175 | 0.74 | AML | other | m | 2021-02-20T02:40:51.24 |
IV.NRCA.HHN. | ML:0.8 | 0.0000427 | 0.06 | AML | other | m | 2021-02-20T02:41:06.03 |
IV.NRCA.HHE. | ML:0.9 | 0.00006325 | 0.1 | AML | other | m | 2021-02-20T02:41:06.03 |