A magnitude ML 1.1 earthquake occured in region: 3 km E San Gemini (TR), on
and geographic coordinates (lat, lon) 42.6190, 12.5840 at 7 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 |
---|---|---|---|---|
San Gemini | TR | 3 | 5018 | 5018 |
Terni | TR | 8 | 111501 | 116519 |
Montecastrilli | TR | 9 | 5022 | 121541 |
Acquasparta | TR | 9 | 4778 | 126319 |
Narni | TR | 12 | 19785 | 146104 |
Avigliano Umbro | TR | 13 | 2558 | 148662 |
Stroncone | TR | 15 | 4917 | 153579 |
Montefranco | TR | 15 | 1276 | 154855 |
Amelia | TR | 16 | 11897 | 166752 |
Arrone | TR | 16 | 2763 | 169515 |
Ferentillo | TR | 17 | 1913 | 171428 |
Spoleto | PG | 18 | 38218 | 209646 |
Massa Martana | PG | 18 | 3770 | 213416 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.1 | 2021-04-10 18:20:48 |
42.6192 | 12.5843 | 7 | 2021-04-10 18:39:02 |
Sala Sismica INGV-Roma | 88980111 |
Field | Value |
---|---|
Time (UTC) | 2021-04-10 18:20:48 ± 0.24 |
Latitude | 42.6192 ± 0.0063 |
Longitude | 12.5843 ± 0.0086 |
Depth (km) | 7 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 88980111 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 794 |
Semi-minor axis of confidence ellipse (meter) | 453 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 225 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 790.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 186 |
Number of associated phases, regardless of their use for origin computation | 8 |
Number of defining phases | 7 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.16 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.23922 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 4 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.1 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 88980111 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-10 18:39:02 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.ASSB.HHZ. | 2021-04-10T18:20:58.93 | 3.0 | positive | manual | P | 0.69 | 0 | |||
IV.GAVE.HNZ. | 2021-04-10T18:20:57.92 | 0.3 | undecidable | manual | S | 72 | 26.5512 | 105 | 0.13 | 71 |
IV.MOMA.HHZ. | 2021-04-10T18:20:55.74 | 0.6 | undecidable | manual | S | 357 | 20.5683 | 110 | -0.05 | 49 |
IV.GAVE.HNZ. | 2021-04-10T18:20:53.52 | 0.1 | undecidable | manual | P | 72 | 26.5512 | 105 | -0.23 | 93 |
IV.MOMA.HHZ. | 2021-04-10T18:20:52.67 | 0.1 | negative | manual | P | 357 | 20.5683 | 110 | 0.08 | 97 |
IV.ARRO.EHZ. | 2021-04-10T18:20:51.72 | 0.1 | undecidable | manual | P | 107 | 15.4734 | 115 | 0.06 | 98 |
IV.CESX.HHZ. | 2021-04-10T18:20:50.70 | 0.6 | undecidable | manual | S | 171 | 1.1988 | 171 | -0.1 | 50 |
IV.CESX.HHZ. | 2021-04-10T18:20:49.79 | 0.1 | positive | manual | P | 171 | 1.1988 | 171 | 0.07 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.ARRO.EHE. | ML:0.9 | 0.00008319999999999999 | 1.44 | AML | other | m | 2021-04-10T18:20:55.93 |
IV.MOMA.HHN. | ML:1.1 | 0.00009055 | 0.18 | AML | other | m | 2021-04-10T18:20:56.00 |
IV.ARRO.EHN. | ML:1.0 | 0.00010899999999999999 | 0.24 | AML | other | m | 2021-04-10T18:20:56.23 |
IV.MOMA.HHE. | ML:1.1 | 0.0000963 | 0.24 | AML | other | m | 2021-04-10T18:20:57.45 |
IV.CESX.HHE. | ML:0.0 | 0.000821473 | 0.2048 | AML | other | m | 2021-04-10T18:20:51.49 |
IV.CESX.HHN. | ML:0.0 | 0.0007396500999999999 | 0.2432 | AML | other | m | 2021-04-10T18:20:50.90 |
IV.MOMA.HNE. | ML:1.2 | 0.00012941395 | 1.2032 | AML | other | m | 2021-04-10T18:20:56.54 |
IV.MOMA.HNN. | ML:1.3 | 0.00013856027500000001 | 0.4224 | AML | other | m | 2021-04-10T18:20:56.28 |