A magnitude ML 1.0 earthquake occured in region: 8 km SE Castelsantangelo sul Nera (MC), on
and geographic coordinates (lat, lon) 42.8420, 13.2150 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 |
---|---|---|---|---|
Castelsantangelo sul Nera | MC | 8 | 281 | 281 |
Montegallo | AP | 10 | 523 | 804 |
Arquata del Tronto | AP | 10 | 1178 | 1982 |
Montemonaco | AP | 11 | 604 | 2586 |
Norcia | PG | 11 | 4957 | 7543 |
Ussita | MC | 13 | 444 | 7987 |
Visso | MC | 14 | 1107 | 9094 |
Preci | PG | 15 | 724 | 9818 |
Montefortino | FM | 15 | 1178 | 10996 |
Accumoli | RI | 17 | 667 | 11663 |
Bolognola | MC | 17 | 142 | 11805 |
Acquasanta Terme | AP | 18 | 2916 | 14721 |
Amandola | FM | 19 | 3629 | 18350 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-04-20 21:46:38 |
42.8423 | 13.2152 | 9 | 2021-04-20 21:50:38 |
Sala Sismica INGV-Roma | 89310161 |
Field | Value |
---|---|
Time (UTC) | 2021-04-20 21:46:38 ± 0.05 |
Latitude | 42.8423 ± 0.0036 |
Longitude | 13.2152 ± 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 | 89310161 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 405 |
Semi-minor axis of confidence ellipse (meter) | 394 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 285 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 400.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 106 |
Number of associated phases, regardless of their use for origin computation | 16 |
Number of defining phases | 14 |
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) | 0.35973 |
Number of stations at which the event was observed | 10 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.4 |
Num. used stations | 14 |
Type of magnitude | ML |
Reference to an origin | 89310161 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-20 21:50:38 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.EL6.EHZ. | 2021-04-20T21:46:58.18 | 3.0 | undecidable | manual | S | 0.77 | 0 | |||
IV.TERO.HHZ. | 2021-04-20T21:46:52.74 | 0.3 | undecidable | manual | S | 127 | 39.9267 | 50 | 0.26 | 68 |
IV.CESI.HHZ. | 2021-04-20T21:46:50.19 | 0.6 | undecidable | manual | S | 306 | 31.0467 | 106 | 0.12 | 48 |
IV.CSP1.EHZ. | 2021-04-20T21:46:49.08 | 0.6 | undecidable | manual | S | 358 | 27.6501 | 108 | 0.11 | 48 |
IV.ASSB.HHZ. | 2021-04-20T21:46:48.44 | 3.0 | undecidable | manual | P | -0.15 | 0 | |||
IV.FDMO.HHZ. | 2021-04-20T21:46:47.69 | 0.6 | undecidable | manual | S | 334 | 23.9538 | 110 | -0.04 | 49 |
IV.TERO.HHZ. | 2021-04-20T21:46:46.45 | 0.1 | undecidable | manual | P | 127 | 39.9267 | 50 | -0.28 | 91 |
IV.CESI.HHZ. | 2021-04-20T21:46:45.30 | 0.6 | positive | manual | P | 306 | 31.0467 | 106 | -0.04 | 48 |
IV.SMA1.EHZ. | 2021-04-20T21:46:44.39 | 1.0 | positive | manual | P | 157 | 25.4523 | 109 | 0.11 | 24 |
IV.CSP1.EHZ. | 2021-04-20T21:46:44.64 | 0.6 | negative | manual | P | 358 | 27.6501 | 108 | -0.06 | 49 |
IV.MC2.EHZ. | 2021-04-20T21:46:43.05 | 0.6 | undecidable | manual | S | 344 | 7.9809 | 138 | 0.03 | 51 |
IV.NRCA.HHZ. | 2021-04-20T21:46:43.00 | 0.6 | undecidable | manual | S | 263 | 8.2806 | 137 | -0.09 | 50 |
IV.FDMO.HHZ. | 2021-04-20T21:46:43.82 | 1.0 | undecidable | manual | P | 334 | 23.9538 | 110 | -0.17 | 24 |
IV.NRCA.HHZ. | 2021-04-20T21:46:41.39 | 0.1 | negative | manual | P | 263 | 8.2806 | 137 | 0.08 | 100 |
IV.MMO1.EHZ. | 2021-04-20T21:46:41.68 | 0.6 | positive | manual | P | 55 | 11.0778 | 129 | -0.04 | 50 |
IV.MC2.EHZ. | 2021-04-20T21:46:41.30 | 0.3 | positive | manual | P | 344 | 7.9809 | 138 | 0.03 | 76 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HNN. | ML:2.0 | 0.0015 | 0.12 | AML | other | m | 2021-04-20T21:46:43.53 |
IV.NRCA.HHN. | ML:2.0 | 0.0016099999999999999 | 0.12 | AML | other | m | 2021-04-20T21:46:43.53 |
IV.NRCA.HHE. | ML:1.6 | 0.0006499999999999999 | 0.52 | AML | other | m | 2021-04-20T21:46:43.43 |
IV.NRCA.HNE. | ML:1.6 | 0.0006645 | 0.52 | AML | other | m | 2021-04-20T21:46:43.69 |
IV.FDMO.HHE. | ML:0.8 | 0.00003955 | 1.24 | AML | other | m | 2021-04-20T21:46:50.81 |
IV.FDMO.HHN. | ML:0.8 | 0.00004215 | 0.4 | AML | other | m | 2021-04-20T21:46:50.23 |
IV.CESI.HHN. | ML:1.1 | 0.0000631 | 0.38 | AML | other | m | 2021-04-20T21:46:50.69 |
IV.CESI.HHE. | ML:0.9 | 0.00003465 | 0.26 | AML | other | m | 2021-04-20T21:46:51.58 |
IV.TERO.HHE. | ML:0.6 | 0.000013350000000000001 | 0.66 | AML | other | m | 2021-04-20T21:46:53.37 |
IV.TERO.HHN. | ML:0.6 | 0.000015050000000000002 | 1.08 | AML | other | m | 2021-04-20T21:46:53.76 |
IV.SMA1.EHE. | ML:1.0 | 0.000056500000000000005 | 0.62 | AML | other | m | 2021-04-20T21:46:54.47 |
IV.SMA1.EHN. | ML:1.0 | 0.00005605 | 1.44 | AML | other | m | 2021-04-20T21:46:55.81 |
IV.ASSB.HHE. | ML:0.8 | 0.00001675 | 1 | AML | other | m | 2021-04-20T21:46:57.15 |
IV.ASSB.HHN. | ML:0.8 | 0.00001585 | 0.7 | AML | other | m | 2021-04-20T21:46:59.60 |