A magnitude ML 1.0 earthquake occured in region: 2 km SW Massa Martana (PG), on
and geographic coordinates (lat, lon) 42.7580, 12.5110 at 8 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 |
---|---|---|---|---|
Massa Martana | PG | 2 | 3770 | 3770 |
Acquasparta | TR | 8 | 4778 | 8548 |
Todi | PG | 9 | 16851 | 25399 |
Giano dell'Umbria | PG | 10 | 3846 | 29245 |
Montecastrilli | TR | 12 | 5022 | 34267 |
Avigliano Umbro | TR | 13 | 2558 | 36825 |
Castel Ritaldi | PG | 15 | 3278 | 40103 |
Monte Castello di Vibio | PG | 16 | 1567 | 41670 |
Fratta Todina | PG | 16 | 1839 | 43509 |
San Gemini | TR | 16 | 5018 | 48527 |
Collazzone | PG | 16 | 3473 | 52000 |
Gualdo Cattaneo | PG | 17 | 6155 | 58155 |
Spoleto | PG | 19 | 38218 | 96373 |
Montefalco | PG | 19 | 5679 | 102052 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-04-19 21:04:06 |
42.7577 | 12.5108 | 9 | 2021-04-19 21:10:05 |
Sala Sismica INGV-Roma | 89269071 |
Field | Value |
---|---|
Time (UTC) | 2021-04-19 21:04:06 ± 0.08 |
Latitude | 42.7577 ± 0.0036 |
Longitude | 12.5108 ± 0.0061 |
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 | 89269071 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 487 |
Semi-minor axis of confidence ellipse (meter) | 397 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 97 |
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) | 139 |
Number of associated phases, regardless of their use for origin computation | 17 |
Number of defining phases | 17 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.19 |
Epicentral distance of station closest to the epicenter (degree) | 0.06385 |
Epicentral distance of station farthest from the epicenter (degree) | 0.49013 |
Number of stations at which the event was observed | 9 |
Number of stations from which data was used for origin computation | 9 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.3 |
Num. used stations | 14 |
Type of magnitude | ML |
Reference to an origin | 89269071 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-19 21:10:05 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MML1.EHN. | 2021-04-19T21:04:24.80 | 0.6 | undecidable | manual | S | 43 | 54.4011 | 50 | 0.24 | 45 |
IV.NRCA.HHZ. | 2021-04-19T21:04:23.55 | 0.3 | undecidable | manual | S | 80 | 49.8168 | 50 | 0.21 | 68 |
IV.CESI.HHN. | 2021-04-19T21:04:21.34 | 0.6 | undecidable | manual | S | 49 | 42.1245 | 50 | 0.06 | 47 |
IV.MGAB.HHZ. | 2021-04-19T21:04:19.95 | 0.3 | undecidable | manual | S | 298 | 36.741 | 50 | 0.12 | 71 |
IV.ASSB.HHZ. | 2021-04-19T21:04:18.92 | 0.3 | undecidable | manual | S | 21 | 33.8439 | 50 | -0.14 | 71 |
IV.MML1.EHN. | 2021-04-19T21:04:17.06 | 0.6 | undecidable | manual | P | 43 | 54.4011 | 50 | -0.07 | 46 |
IV.NRCA.HHZ. | 2021-04-19T21:04:16.19 | 0.1 | undecidable | manual | P | 80 | 49.8168 | 50 | -0.24 | 90 |
IV.MGAB.HHZ. | 2021-04-19T21:04:14.29 | 0.3 | undecidable | manual | P | 298 | 36.741 | 50 | -0.12 | 71 |
IV.CESI.HHN. | 2021-04-19T21:04:14.94 | 0.6 | undecidable | manual | P | 49 | 42.1245 | 50 | -0.31 | 45 |
IV.ARRO.EHZ. | 2021-04-19T21:04:13.17 | 0.1 | undecidable | manual | P | 134 | 28.749 | 106 | 0.18 | 95 |
IV.ASSB.HHZ. | 2021-04-19T21:04:13.90 | 0.6 | undecidable | manual | P | 21 | 33.8439 | 50 | -0.06 | 48 |
IV.CESX.HHZ. | 2021-04-19T21:04:13.40 | 0.3 | undecidable | manual | S | 159 | 17.6712 | 116 | -0.39 | 69 |
IV.CESX.HHZ. | 2021-04-19T21:04:11.27 | 0.3 | undecidable | manual | P | 159 | 17.6712 | 116 | 0.36 | 70 |
IT.GNU.HGN. | 2021-04-19T21:04:10.79 | 0.3 | undecidable | manual | S | 43 | 7.0929 | 140 | -0.02 | 76 |
IV.MOMA.HHZ. | 2021-04-19T21:04:10.70 | 0.1 | undecidable | manual | S | 43 | 7.0929 | 140 | -0.1 | 100 |
IV.MOMA.HHZ. | 2021-04-19T21:04:09.39 | 0.1 | negative | manual | P | 43 | 7.0929 | 140 | 0.2 | 98 |
IT.GNU.HGN. | 2021-04-19T21:04:09.24 | 0.3 | undecidable | manual | P | 43 | 7.0929 | 140 | 0.05 | 76 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.MOMA.HHN. | ML:1.4 | 0.0003965 | 1.44 | AML | other | m | 2021-04-19T21:04:11.01 |
IV.MOMA.HHE. | ML:1.5 | 0.0005895 | 0.1 | AML | other | m | 2021-04-19T21:04:11.18 |
IV.MOMA.HNE. | ML:1.5 | 0.0005475 | 0.76 | AML | other | m | 2021-04-19T21:04:11.56 |
IV.MOMA.HNN. | ML:1.4 | 0.00042249999999999997 | 1.1 | AML | other | m | 2021-04-19T21:04:12.74 |
IV.CESX.HHN. | ML:0.8 | 0.0000537 | 0.62 | AML | other | m | 2021-04-19T21:04:14.57 |
IV.CESX.HHE. | ML:0.8 | 0.0000512 | 1.34 | AML | other | m | 2021-04-19T21:04:15.28 |
IV.ARRO.EHN. | ML:0.8 | 0.0000369 | 0.2 | AML | other | m | 2021-04-19T21:04:18.91 |
IV.ARRO.EHE. | ML:0.8 | 0.000031799999999999994 | 1.66 | AML | other | m | 2021-04-19T21:04:18.09 |
IV.ASSB.HHN. | ML:0.7 | 0.000020549999999999998 | 0.44 | AML | other | m | 2021-04-19T21:04:19.55 |
IV.ASSB.HHE. | ML:0.7 | 0.000019250000000000004 | 1.3 | AML | other | m | 2021-04-19T21:04:20.74 |
IV.MGAB.HHE. | ML:1.1 | 0.00005044999999999999 | 1.56 | AML | other | m | 2021-04-19T21:04:21.02 |
IV.MGAB.HHN. | ML:1.1 | 0.00004425 | 0.18 | AML | other | m | 2021-04-19T21:04:22.56 |
IV.NRCA.HHE. | ML:0.9 | 0.0000201 | 0.12 | AML | other | m | 2021-04-19T21:04:25.42 |
IV.NRCA.HHN. | ML:1.0 | 0.00002335 | 0.14 | AML | other | m | 2021-04-19T21:04:25.88 |