A magnitude ML 1.1 earthquake occured in region: Massa Martana (PG), on
and geographic coordinates (lat, lon) 42.7760, 12.5260 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 | 0 | 3770 | 3770 |
Giano dell'Umbria | PG | 8 | 3846 | 7616 |
Acquasparta | TR | 10 | 4778 | 12394 |
Todi | PG | 10 | 16851 | 29245 |
Castel Ritaldi | PG | 13 | 3278 | 32523 |
Montecastrilli | TR | 14 | 5022 | 37545 |
Collazzone | PG | 15 | 3473 | 41018 |
Gualdo Cattaneo | PG | 15 | 6155 | 47173 |
Avigliano Umbro | TR | 16 | 2558 | 49731 |
Monte Castello di Vibio | PG | 16 | 1567 | 51298 |
Fratta Todina | PG | 16 | 1839 | 53137 |
Montefalco | PG | 17 | 5679 | 58816 |
Spoleto | PG | 18 | 38218 | 97034 |
San Gemini | TR | 18 | 5018 | 102052 |
Bevagna | PG | 19 | 5081 | 107133 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.1 | 2021-04-20 21:18:54 |
42.7762 | 12.5265 | 8 | 2021-04-20 21:28:03 |
Sala Sismica INGV-Roma | 89309161 |
Field | Value |
---|---|
Time (UTC) | 2021-04-20 21:18:54 ± 0.1 |
Latitude | 42.7762 ± 0.0045 |
Longitude | 12.5265 ± 0.0074 |
Depth (km) | 8 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 89309161 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 649 |
Semi-minor axis of confidence ellipse (meter) | 476 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 255 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 650.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 129 |
Number of associated phases, regardless of their use for origin computation | 24 |
Number of defining phases | 23 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.29 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.48653 |
Number of stations at which the event was observed | 14 |
Number of stations from which data was used for origin computation | 13 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.1 |
Num. used stations | 10 |
Type of magnitude | ML |
Reference to an origin | 89309161 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-20 21:28:03 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.FDMO.HHZ. | 2021-04-20T21:19:11.80 | 0.3 | undecidable | manual | S | 57 | 53.9016 | 50 | 0.05 | 71 |
IV.MURB.HNE. | 2021-04-20T21:19:10.78 | 0.1 | undecidable | manual | P | 54.0015 | 6.44 | 0 | ||
IV.NRCA.HHZ. | 2021-04-20T21:19:10.45 | 0.3 | undecidable | manual | S | 82 | 48.2184 | 50 | 0.22 | 69 |
IV.LNSS.HNN. | 2021-04-20T21:19:09.79 | 0.3 | undecidable | manual | S | 114 | 46.1205 | 50 | 0.14 | 71 |
IV.MGAB.HHZ. | 2021-04-20T21:19:07.06 | 0.3 | undecidable | manual | S | 294 | 36.9297 | 50 | -0.15 | 72 |
IV.CESI.HNE. | 2021-04-20T21:19:07.60 | 0.3 | undecidable | manual | S | 50 | 39.8268 | 50 | -0.38 | 68 |
IV.ATLO.EHZ. | 2021-04-20T21:19:06.56 | 3.0 | undecidable | manual | P | 0 | ||||
IV.ASSB.HHZ. | 2021-04-20T21:19:05.06 | 0.3 | undecidable | manual | S | 20 | 31.4463 | 104 | -0.39 | 69 |
IV.FDMO.HHZ. | 2021-04-20T21:19:04.36 | 0.1 | undecidable | manual | P | 57 | 53.9016 | 50 | 0.03 | 95 |
IV.MML1.HNE. | 2021-04-20T21:19:04.21 | 0.1 | undecidable | manual | P | 44 | 52.0035 | 50 | 0.18 | 93 |
IV.ARRO.EHZ. | 2021-04-20T21:19:03.92 | 0.3 | undecidable | manual | S | 138 | 29.2485 | 105 | -0.8 | 60 |
IV.NRCA.HHZ. | 2021-04-20T21:19:03.34 | 0.1 | undecidable | manual | P | 82 | 48.2184 | 50 | -0.11 | 95 |
IV.LNSS.HNN. | 2021-04-20T21:19:02.89 | 0.1 | undecidable | manual | P | 114 | 46.1205 | 50 | -0.23 | 93 |
IV.CESI.HNE. | 2021-04-20T21:19:02.13 | 0.1 | undecidable | manual | P | 50 | 39.8268 | 50 | -0.03 | 98 |
IV.GAVE.EHZ. | 2021-04-20T21:19:01.03 | 0.1 | undecidable | manual | P | 107 | 31.3464 | 104 | 0.35 | 93 |
IV.MGAB.HHZ. | 2021-04-20T21:19:01.60 | 0.1 | undecidable | manual | P | 294 | 36.9297 | 50 | -0.11 | 97 |
IV.CESX.HHN. | 2021-04-20T21:19:00.94 | 0.3 | undecidable | manual | S | 165 | 19.2696 | 112 | -0.48 | 69 |
IV.ARRO.EHZ. | 2021-04-20T21:19:00.74 | 0.1 | undecidable | manual | P | 138 | 29.2485 | 105 | 0.47 | 91 |
IV.ASSB.HHZ. | 2021-04-20T21:19:00.98 | 0.1 | undecidable | manual | P | 20 | 31.4463 | 104 | 0.28 | 94 |
IV.CESX.HHN. | 2021-04-20T21:18:58.73 | 0.1 | undecidable | manual | P | 165 | 19.2696 | 112 | 0.36 | 94 |
IT.GNU.HGE. | 2021-04-20T21:18:57.19 | 0.3 | undecidable | manual | S | 49 | 4.6953 | 149 | -0.21 | 75 |
IV.MOMA.HHZ. | 2021-04-20T21:18:57.19 | 0.3 | undecidable | manual | S | 49 | 4.6953 | 149 | -0.21 | 75 |
IV.MOMA.HHZ. | 2021-04-20T21:18:56.26 | 0.1 | negative | manual | P | 49 | 4.6953 | 149 | 0.21 | 100 |
IT.GNU.HGE. | 2021-04-20T21:18:56.27 | 0.1 | undecidable | manual | P | 49 | 4.6953 | 149 | 0.23 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.GAVE.EHN. | ML:1.0 | 0.00004805 | 0.18 | AML | other | m | 2021-04-20T21:19:06.80 |
IV.GAVE.EHE. | ML:1.3 | 0.0000849 | 1.12 | AML | other | m | 2021-04-20T21:19:07.13 |
IV.ARRO.EHN. | ML:1.0 | 0.000051750000000000004 | 0.22 | AML | other | m | 2021-04-20T21:19:07.10 |
IV.ARRO.EHE. | ML:1.0 | 0.000048549999999999994 | 0.5 | AML | other | m | 2021-04-20T21:19:07.60 |
IV.MGAB.HHE. | ML:1.2 | 0.0000633 | 0.56 | AML | other | m | 2021-04-20T21:19:08.42 |
IV.MGAB.HHN. | ML:1.2 | 0.00005865 | 0.36 | AML | other | m | 2021-04-20T21:19:08.85 |
IV.FDMO.HHE. | ML:0.9 | 0.0000188 | 0.58 | AML | other | m | 2021-04-20T21:19:12.66 |
IV.NRCA.HHE. | ML:1.1 | 0.0000374 | 0.12 | AML | other | m | 2021-04-20T21:19:12.91 |
IV.NRCA.HHN. | ML:1.0 | 0.00003075 | 0.16 | AML | other | m | 2021-04-20T21:19:12.82 |
IV.FDMO.HHN. | ML:0.8 | 0.0000174 | 0.54 | AML | other | m | 2021-04-20T21:19:13.66 |