A magnitude ML 1.0 earthquake occured in region: 8 km W Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.8020, 13.2020 at 12 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 | 8 | 1178 | 1178 |
Norcia | PG | 9 | 4957 | 6135 |
Castelsantangelo sul Nera | MC | 11 | 281 | 6416 |
Montegallo | AP | 12 | 523 | 6939 |
Accumoli | RI | 13 | 667 | 7606 |
Montemonaco | AP | 15 | 604 | 8210 |
Preci | PG | 16 | 724 | 8934 |
Ussita | MC | 17 | 444 | 9378 |
Visso | MC | 17 | 1107 | 10485 |
Acquasanta Terme | AP | 17 | 2916 | 13401 |
Cascia | PG | 18 | 3217 | 16618 |
Montefortino | FM | 19 | 1178 | 17796 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-04-15 01:10:21 |
42.8025 | 13.2022 | 12 | 2021-04-15 01:27:40 |
Sala Sismica INGV-Roma | 89103121 |
Field | Value |
---|---|
Time (UTC) | 2021-04-15 01:10:21 ± 0.07 |
Latitude | 42.8025 ± 0.0036 |
Longitude | 13.2022 ± 0.0037 |
Depth (km) | 12 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 89103121 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 305 |
Semi-minor axis of confidence ellipse (meter) | 272 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 11 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 300.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 65 |
Number of associated phases, regardless of their use for origin computation | 20 |
Number of defining phases | 20 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.16 |
Epicentral distance of station closest to the epicenter (degree) | 0.07105 |
Epicentral distance of station farthest from the epicenter (degree) | 0.34534 |
Number of stations at which the event was observed | 10 |
Number of stations from which data was used for origin computation | 10 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.4 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 89103121 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-15 01:27:40 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TERO.HHZ. | 2021-04-15T01:10:34.59 | 0.3 | undecidable | manual | S | 121 | 38.3283 | 93 | 0.15 | 69 |
IV.LNSS.HHZ. | 2021-04-15T01:10:31.01 | 0.3 | undecidable | manual | S | 211 | 25.752 | 95 | -0.09 | 71 |
IV.GAVE.EHZ. | 2021-04-15T01:10:31.91 | 0.3 | undecidable | manual | S | 244 | 27.9498 | 94 | 0.25 | 70 |
IV.FDMO.HHZ. | 2021-04-15T01:10:31.31 | 0.3 | undecidable | manual | S | 340 | 27.5502 | 95 | -0.26 | 68 |
IV.TERO.HHZ. | 2021-04-15T01:10:29.09 | 0.3 | undecidable | manual | P | 121 | 38.3283 | 93 | 0.01 | 71 |
IV.SMA1.EHZ. | 2021-04-15T01:10:29.90 | 0.3 | undecidable | manual | S | 150 | 21.9669 | 97 | -0.18 | 71 |
IV.T1299.HNZ. | 2021-04-15T01:10:29.68 | 0.3 | undecidable | manual | S | 161 | 19.7691 | 99 | 0.17 | 71 |
IV.MTRA.HNZ. | 2021-04-15T01:10:28.30 | 0.3 | undecidable | manual | S | 108 | 16.6722 | 105 | -0.38 | 69 |
IV.MMO1.EHZ. | 2021-04-15T01:10:28.19 | 0.3 | undecidable | manual | S | 43 | 14.7741 | 110 | -0.02 | 74 |
IV.MC2.EHZ. | 2021-04-15T01:10:27.80 | 0.3 | undecidable | manual | S | 355 | 12.0768 | 119 | 0.23 | 72 |
IV.GAVE.EHZ. | 2021-04-15T01:10:27.53 | 0.1 | undecidable | manual | P | 244 | 27.9498 | 94 | 0.06 | 96 |
IV.FDMO.HHZ. | 2021-04-15T01:10:27.31 | 0.6 | undecidable | manual | P | 340 | 27.5502 | 95 | -0.11 | 47 |
IV.LNSS.HHZ. | 2021-04-15T01:10:27.10 | 0.3 | undecidable | manual | P | 211 | 25.752 | 95 | -0.04 | 72 |
IV.SMA1.EHZ. | 2021-04-15T01:10:26.50 | 0.3 | undecidable | manual | P | 150 | 21.9669 | 97 | -0.06 | 73 |
IV.T1299.HNZ. | 2021-04-15T01:10:26.40 | 0.6 | undecidable | manual | P | 161 | 19.7691 | 99 | 0.17 | 47 |
IV.NRCA.HHZ. | 2021-04-15T01:10:26.42 | 0.3 | undecidable | manual | S | 296 | 7.881 | 137 | -0.26 | 71 |
IV.MC2.EHZ. | 2021-04-15T01:10:25.26 | 0.1 | undecidable | manual | P | 355 | 12.0768 | 119 | 0.15 | 97 |
IV.MTRA.HNZ. | 2021-04-15T01:10:25.73 | 0.6 | undecidable | manual | P | 108 | 16.6722 | 105 | -0.02 | 49 |
IV.MMO1.EHZ. | 2021-04-15T01:10:25.56 | 0.1 | undecidable | manual | P | 43 | 14.7741 | 110 | 0.08 | 97 |
IV.NRCA.HHZ. | 2021-04-15T01:10:24.63 | 0.1 | undecidable | manual | P | 296 | 7.881 | 137 | 0.03 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHE. | ML:1.3 | 0.0002255 | 0.1 | AML | other | m | 2021-04-15T01:10:26.55 |
IV.NRCA.HHN. | ML:1.0 | 0.0001258225 | 0.06 | AML | other | m | 2021-04-15T01:10:26.54 |
IV.NRCA.HNE. | ML:1.2 | 0.00020493815 | 0.0896 | AML | other | m | 2021-04-15T01:10:26.50 |
IV.NRCA.HNN. | ML:1.0 | 0.00011036830999999999 | 0.0992 | AML | other | m | 2021-04-15T01:10:27.08 |
IV.TERO.HHE. | ML:0.2 | 0.000006484307 | 1.8 | AML | other | m | 2021-04-15T01:10:35.06 |
IV.TERO.HHN. | ML:0.4 | 0.0000094901325 | 0.1 | AML | other | m | 2021-04-15T01:10:34.90 |