A magnitude ML 1.0 earthquake occured in region: 4 km E Norcia (PG), on
and geographic coordinates (lat, lon) 42.8000, 13.1410 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 | 11 | 281 | 5238 |
Preci | PG | 12 | 724 | 5962 |
Arquata del Tronto | AP | 13 | 1178 | 7140 |
Cascia | PG | 14 | 3217 | 10357 |
Accumoli | RI | 15 | 667 | 11024 |
Visso | MC | 15 | 1107 | 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 | 19 | 117 | 14894 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-04-22 02:46:37 |
42.8003 | 13.1408 | 9 | 2021-04-22 04:17:53 |
Sala Sismica INGV-Roma | 89347441 |
Field | Value |
---|---|
Time (UTC) | 2021-04-22 02:46:37 ± 0.07 |
Latitude | 42.8003 ± 0.0036 |
Longitude | 13.1408 ± 0.0049 |
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 | 89347441 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 375 |
Semi-minor axis of confidence ellipse (meter) | 234 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 316 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 380.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 91 |
Number of associated phases, regardless of their use for origin computation | 15 |
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) | 0.38311 |
Number of stations at which the event was observed | 9 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.2 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 89347441 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-22 04:17:53 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.GAVE.EHZ. | 2021-04-22T02:46:46.30 | 0.6 | undecidable | manual | S | 239 | 23.3544 | 110 | -0.12 | 48 |
IV.LNSS.HHZ. | 2021-04-22T02:46:46.56 | 0.6 | undecidable | manual | S | 201 | 23.3544 | 110 | 0.15 | 47 |
IV.MTRA.EHZ. | 2021-04-22T02:46:45.72 | 0.6 | undecidable | manual | S | 103 | 21.3675 | 112 | -0.04 | 49 |
IV.ASSB.HHZ. | 2021-04-22T02:46:45.99 | 3.0 | undecidable | manual | P | -1.47 | 0 | |||
IV.TERO.HHZ. | 2021-04-22T02:46:45.83 | 0.3 | negative | manual | P | 117 | 42.5241 | 50 | -0.2 | 68 |
IV.MF5.EHZ. | 2021-04-22T02:46:44.71 | 0.6 | negative | manual | P | 51 | 33.2445 | 50 | 0.12 | 47 |
IV.MMO1.EHZ. | 2021-04-22T02:46:44.84 | 0.6 | undecidable | manual | S | 54 | 18.6702 | 115 | -0.07 | 49 |
IV.MC2.EHZ. | 2021-04-22T02:46:43.42 | 0.6 | undecidable | manual | S | 18 | 12.9759 | 124 | 0.26 | 47 |
IV.LNSS.HHZ. | 2021-04-22T02:46:42.88 | 0.1 | negative | manual | P | 201 | 23.3544 | 110 | 0.13 | 95 |
IV.MTRA.EHZ. | 2021-04-22T02:46:42.40 | 1.0 | undecidable | manual | P | 103 | 21.3675 | 112 | 0.03 | 24 |
IV.GAVE.EHZ. | 2021-04-22T02:46:42.66 | 0.6 | undecidable | manual | P | 239 | 23.3544 | 110 | -0.09 | 48 |
IV.MMO1.EHZ. | 2021-04-22T02:46:41.87 | 0.3 | positive | manual | P | 54 | 18.6702 | 115 | -0.01 | 74 |
IV.MC2.EHZ. | 2021-04-22T02:46:40.93 | 1.0 | positive | manual | P | 18 | 12.9759 | 124 | 0.05 | 25 |
IV.NRCA.HHZ. | 2021-04-22T02:46:40.83 | 0.6 | undecidable | manual | S | 330 | 4.2957 | 154 | -0.29 | 48 |
IV.NRCA.HHZ. | 2021-04-22T02:46:39.74 | 0.1 | undecidable | manual | P | 330 | 4.2957 | 154 | 0.04 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.MTRA.EHN. | ML:0.9 | 0.000052900000000000005 | 0.62 | AML | other | m | 2021-04-22T02:46:45.63 |
IV.TERO.HHE. | ML:0.8 | 0.000020749999999999996 | 0.76 | AML | other | m | 2021-04-22T02:46:45.95 |
IV.MTRA.EHE. | ML:0.9 | 0.0000552 | 0.22 | AML | other | m | 2021-04-22T02:46:46.21 |
IV.LNSS.HHN. | ML:1.3 | 0.000135 | 1.7 | AML | other | m | 2021-04-22T02:46:47.89 |
IV.LNSS.HHE. | ML:1.2 | 0.00009795 | 1.2 | AML | other | m | 2021-04-22T02:46:47.04 |
IV.TERO.HHN. | ML:0.8 | 0.0000187 | 1.02 | AML | other | m | 2021-04-22T02:46:55.78 |