A magnitude ML 1.2 earthquake occured in region: 7 km W Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.7990, 13.2140 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 |
---|---|---|---|---|
Arquata del Tronto | AP | 7 | 1178 | 1178 |
Norcia | PG | 10 | 4957 | 6135 |
Montegallo | AP | 11 | 523 | 6658 |
Accumoli | RI | 12 | 667 | 7325 |
Castelsantangelo sul Nera | MC | 12 | 281 | 7606 |
Montemonaco | AP | 15 | 604 | 8210 |
Acquasanta Terme | AP | 16 | 2916 | 11126 |
Preci | PG | 17 | 724 | 11850 |
Ussita | MC | 17 | 444 | 12294 |
Visso | MC | 18 | 1107 | 13401 |
Cascia | PG | 19 | 3217 | 16618 |
Montefortino | FM | 19 | 1178 | 17796 |
Amatrice | RI | 20 | 2657 | 20453 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.2 | 2021-04-22 03:43:17 |
42.7987 | 13.2143 | 9 | 2021-04-22 04:06:35 |
Sala Sismica INGV-Roma | 89347171 |
Field | Value |
---|---|
Time (UTC) | 2021-04-22 03:43:17 ± 0.1 |
Latitude | 42.7987 ± 0.0054 |
Longitude | 13.2143 ± 0.0061 |
Depth (km) | 9 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 89347171 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 491 |
Semi-minor axis of confidence ellipse (meter) | 488 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 217 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 490.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 125 |
Number of associated phases, regardless of their use for origin computation | 12 |
Number of defining phases | 12 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.23 |
Epicentral distance of station closest to the epicenter (degree) | 0.08094 |
Epicentral distance of station farthest from the epicenter (degree) | 0.33545 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 1.2 |
Uncertainty | 0.3 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 89347171 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-22 04:06:35 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TERO.HHZ. | 2021-04-22T03:43:25.00 | 0.1 | undecidable | manual | P | 121 | 37.2294 | 50 | -0.29 | 93 |
IV.CSP1.EHZ. | 2021-04-22T03:43:24.53 | 0.1 | undecidable | manual | P | 359 | 32.5452 | 50 | -0.03 | 99 |
IV.MTRA.EHZ. | 2021-04-22T03:43:24.10 | 0.3 | undecidable | manual | S | 107 | 15.5733 | 121 | -0.1 | 75 |
IV.MF5.EHZ. | 2021-04-22T03:43:24.34 | 0.1 | undecidable | manual | P | 43 | 28.9488 | 108 | 0.34 | 93 |
IV.MC2.EHZ. | 2021-04-22T03:43:23.15 | 0.3 | undecidable | manual | S | 351 | 12.6762 | 126 | -0.22 | 74 |
IV.GAVE.EHZ. | 2021-04-22T03:43:23.93 | 0.1 | undecidable | manual | P | 246 | 28.6491 | 108 | 0 | 100 |
IV.MMO1.EHZ. | 2021-04-22T03:43:23.60 | 0.3 | undecidable | manual | S | 39 | 14.4744 | 123 | -0.27 | 73 |
IV.NRCA.HHZ. | 2021-04-22T03:43:22.14 | 0.3 | undecidable | manual | S | 296 | 8.9799 | 136 | -0.27 | 74 |
IV.MC2.EHZ. | 2021-04-22T03:43:21.25 | 0.1 | undecidable | manual | P | 351 | 12.6762 | 126 | 0.19 | 99 |
IV.MMO1.EHZ. | 2021-04-22T03:43:21.46 | 0.6 | positive | manual | P | 39 | 14.4744 | 123 | 0.11 | 50 |
IV.MTRA.EHZ. | 2021-04-22T03:43:21.70 | 0.1 | undecidable | manual | P | 107 | 15.5733 | 121 | 0.16 | 99 |
IV.NRCA.HHZ. | 2021-04-22T03:43:20.72 | 0.1 | undecidable | manual | P | 296 | 8.9799 | 136 | 0.22 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHN. | ML:1.4 | 0.000372 | 0.16 | AML | other | m | 2021-04-22T03:43:22.36 |
IV.NRCA.HHE. | ML:1.5 | 0.0004415 | 0.08 | AML | other | m | 2021-04-22T03:43:22.48 |
IV.NRCA.HNE. | ML:1.4 | 0.00038549999999999994 | 0.08 | AML | other | m | 2021-04-22T03:43:22.44 |
IV.NRCA.HNN. | ML:1.5 | 0.000462 | 1.16 | AML | other | m | 2021-04-22T03:43:22.36 |
IV.MTRA.EHN. | ML:1.1 | 0.000115 | 1.2 | AML | other | m | 2021-04-22T03:43:24.92 |
IV.MTRA.EHE. | ML:1.0 | 0.00010575000000000001 | 1.34 | AML | other | m | 2021-04-22T03:43:25.11 |
IV.TERO.HHN. | ML:0.9 | 0.00003165 | 0.12 | AML | other | m | 2021-04-22T03:43:30.58 |
IV.TERO.HHE. | ML:0.9 | 0.000030100000000000003 | 0.12 | AML | other | m | 2021-04-22T03:43:30.87 |