A magnitude ML 1.4 earthquake occured in region: 2 km E Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.7690, 13.3200 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 |
Acquasanta Terme | AP | 7 | 2916 | 4094 |
Montegallo | AP | 8 | 523 | 4617 |
Accumoli | RI | 10 | 667 | 5284 |
Montemonaco | AP | 15 | 604 | 5888 |
Valle Castellana | TE | 15 | 977 | 6865 |
Amatrice | RI | 16 | 2657 | 9522 |
Roccafluvione | AP | 16 | 2010 | 11532 |
Palmiano | AP | 19 | 196 | 11728 |
Norcia | PG | 19 | 4957 | 16685 |
Venarotta | AP | 19 | 2066 | 18751 |
Rocca Santa Maria | TE | 19 | 537 | 19288 |
Montefortino | FM | 20 | 1178 | 20466 |
Castelsantangelo sul Nera | MC | 20 | 281 | 20747 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.4 | 2021-10-21 21:10:29 |
42.7693 | 13.3202 | 10 | 2021-10-21 21:37:51 |
Sala Sismica INGV-Roma | 96857681 |
Field | Value |
---|---|
Time (UTC) | 2021-10-21 21:10:29 ± 0.22 |
Latitude | 42.7693 ± 0.0099 |
Longitude | 13.3202 ± 0.0098 |
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 | 96857681 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1255 |
Semi-minor axis of confidence ellipse (meter) | 531 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 329 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1260.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 268 |
Number of associated phases, regardless of their use for origin computation | 11 |
Number of defining phases | 9 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.17 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.31656 |
Number of stations at which the event was observed | 6 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 1.4 |
Uncertainty | 0.0 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 96857681 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-10-21 21:37:51 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MNTT.EHZ. | 2021-10-21T21:11:04.65 | 3.0 | undecidable | manual | Sn | -2.12 | 0 | |||
IV.MF5.EHZ. | 2021-10-21T21:10:39.76 | 0.3 | undecidable | manual | S | 25 | 26.751 | 50 | 0.25 | 71 |
IV.MC2.EHZ. | 2021-10-21T21:10:37.28 | 0.3 | undecidable | manual | S | 326 | 19.0698 | 118 | 0.03 | 75 |
IV.NRCA.HHZ. | 2021-10-21T21:10:37.08 | 0.1 | undecidable | manual | S | 293 | 18.1707 | 119 | 0.08 | 99 |
IV.FDMO.HHZ. | 2021-10-21T21:10:36.37 | 0.3 | undecidable | manual | P | 328 | 35.1426 | 50 | -0.31 | 69 |
IV.MMO1.EHZ. | 2021-10-21T21:10:35.78 | 0.1 | undecidable | manual | S | 2 | 14.3745 | 126 | -0.11 | 99 |
IV.MNTT.EHZ. | 2021-10-21T21:10:35.06 | 3.0 | undecidable | manual | Pn | 0.21 | 0 | |||
IV.MF5.EHZ. | 2021-10-21T21:10:35.34 | 0.1 | undecidable | manual | P | 25 | 26.751 | 50 | -0.04 | 98 |
IV.NRCA.HHZ. | 2021-10-21T21:10:34.02 | 0.1 | undecidable | manual | P | 293 | 18.1707 | 119 | 0.09 | 99 |
IV.MC2.EHZ. | 2021-10-21T21:10:34.02 | 0.1 | undecidable | manual | P | 326 | 19.0698 | 118 | -0.05 | 99 |
IV.MMO1.EHZ. | 2021-10-21T21:10:33.35 | 0.1 | undecidable | manual | P | 2 | 14.3745 | 126 | 0.06 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHN. | ML:1.3 | 0.0001685 | 0.16 | AML | other | m | 2021-10-21T21:10:37.25 |
IV.NRCA.HHE. | ML:1.4 | 0.000193 | 0.14 | AML | other | m | 2021-10-21T21:10:37.18 |