A magnitude ML 0.9 earthquake occured in region: 4 km E Norcia (PG), on
and geographic coordinates (lat, lon) 42.8040, 13.1390 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 |
---|---|---|---|---|
Norcia | PG | 4 | 4957 | 4957 |
Castelsantangelo sul Nera | MC | 10 | 281 | 5238 |
Preci | PG | 12 | 724 | 5962 |
Arquata del Tronto | AP | 13 | 1178 | 7140 |
Cascia | PG | 14 | 3217 | 10357 |
Visso | MC | 15 | 1107 | 11464 |
Accumoli | RI | 15 | 667 | 12131 |
Ussita | MC | 16 | 444 | 12575 |
Montegallo | AP | 17 | 523 | 13098 |
Cerreto di Spoleto | PG | 18 | 1075 | 14173 |
Montemonaco | AP | 19 | 604 | 14777 |
Poggiodomo | PG | 20 | 117 | 14894 |
Sellano | PG | 20 | 1079 | 15973 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-04-16 22:14:25 |
42.8045 | 13.1387 | 9 | 2021-04-16 22:19:14 |
Sala Sismica INGV-Roma | 89160111 |
Field | Value |
---|---|
Time (UTC) | 2021-04-16 22:14:25 ± 0.05 |
Latitude | 42.8045 ± 0.0027 |
Longitude | 13.1387 ± 0.0049 |
Depth (km) | 9 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 89160111 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 414 |
Semi-minor axis of confidence ellipse (meter) | 216 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 288 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 410.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 128 |
Number of associated phases, regardless of their use for origin computation | 10 |
Number of defining phases | 10 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.13 |
Epicentral distance of station closest to the epicenter (degree) | 0.03417 |
Epicentral distance of station farthest from the epicenter (degree) | 0.38671 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.1 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 89160111 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-16 22:19:14 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TERO.HHZ. | 2021-04-16T22:14:39.59 | 0.1 | undecidable | manual | S | 118 | 42.9237 | 50 | -0.09 | 94 |
IV.CSP1.EHZ. | 2021-04-16T22:14:36.90 | 0.1 | undecidable | manual | S | 10 | 32.3454 | 50 | 0.05 | 97 |
IV.LNSS.HHZ. | 2021-04-16T22:14:34.18 | 0.1 | undecidable | manual | S | 200 | 23.754 | 111 | 0.02 | 99 |
IV.TERO.HHZ. | 2021-04-16T22:14:33.46 | 1.0 | undecidable | manual | P | 118 | 42.9237 | 50 | -0.15 | 23 |
IV.MMO1.EHZ. | 2021-04-16T22:14:32.56 | 0.1 | undecidable | manual | S | 55 | 18.5703 | 116 | 0.05 | 99 |
IV.CSP1.EHZ. | 2021-04-16T22:14:31.72 | 1.0 | undecidable | manual | P | 10 | 32.3454 | 50 | -0.26 | 23 |
IV.LNSS.HHZ. | 2021-04-16T22:14:30.52 | 0.3 | positive | manual | P | 200 | 23.754 | 111 | 0.09 | 73 |
IV.MMO1.EHZ. | 2021-04-16T22:14:29.58 | 0.6 | positive | manual | P | 55 | 18.5703 | 116 | 0.1 | 49 |
IV.NRCA.HHZ. | 2021-04-16T22:14:28.56 | 0.1 | undecidable | manual | S | 328 | 3.7962 | 157 | -0.2 | 99 |
IV.NRCA.HHZ. | 2021-04-16T22:14:27.44 | 0.1 | undecidable | manual | P | 328 | 3.7962 | 157 | 0.13 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.LNSS.HHN. | ML:0.9 | 0.000056999999999999996 | 0.74 | AML | other | m | 2021-04-16T22:14:34.59 |
IV.LNSS.HHE. | ML:0.8 | 0.000039099999999999995 | 0.58 | AML | other | m | 2021-04-16T22:14:35.36 |