A magnitude ML 1.0 earthquake occured in region: 5 km NW Massa Martana (PG), on
and geographic coordinates (lat, lon) 42.8190, 12.4950 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 | 5 | 3770 | 3770 |
Giano dell'Umbria | PG | 7 | 3846 | 7616 |
Todi | PG | 8 | 16851 | 24467 |
Collazzone | PG | 10 | 3473 | 27940 |
Fratta Todina | PG | 11 | 1839 | 29779 |
Gualdo Cattaneo | PG | 11 | 6155 | 35934 |
Monte Castello di Vibio | PG | 12 | 1567 | 37501 |
Castel Ritaldi | PG | 15 | 3278 | 40779 |
Acquasparta | TR | 15 | 4778 | 45557 |
Montefalco | PG | 16 | 5679 | 51236 |
Bevagna | PG | 16 | 5081 | 56317 |
Marsciano | PG | 16 | 18902 | 75219 |
Montecastrilli | TR | 19 | 5022 | 80241 |
Avigliano Umbro | TR | 19 | 2558 | 82799 |
Deruta | PG | 19 | 9669 | 92468 |
San Venanzo | TR | 19 | 2218 | 94686 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-04-11 22:36:56 |
42.8187 | 12.4947 | 9 | 2021-04-11 22:47:03 |
Sala Sismica INGV-Roma | 89022451 |
Field | Value |
---|---|
Time (UTC) | 2021-04-11 22:36:56 ± 0.09 |
Latitude | 42.8187 ± 0.0045 |
Longitude | 12.4947 ± 0.0061 |
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 | 89022451 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 520 |
Semi-minor axis of confidence ellipse (meter) | 490 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 84 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 520.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 127 |
Number of associated phases, regardless of their use for origin computation | 22 |
Number of defining phases | 20 |
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) | 0.67539 |
Number of stations at which the event was observed | 12 |
Number of stations from which data was used for origin computation | 10 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.3 |
Num. used stations | 9 |
Type of magnitude | ML |
Reference to an origin | 89022451 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-11 22:47:03 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.VITU.HHZ. | 2021-04-11T22:38:03.55 | 3.0 | undecidable | manual | Sn | 0.81 | 0 | |||
IV.SEI.HHZ. | 2021-04-11T22:37:42.00 | 3.0 | undecidable | manual | S | -0.09 | 0 | |||
IV.EL6.EHZ. | 2021-04-11T22:37:20.10 | 0.3 | undecidable | manual | S | 41 | 74.9694 | 50 | 0.81 | 54 |
IV.MURB.HHZ. | 2021-04-11T22:37:11.95 | 0.3 | undecidable | manual | S | 3 | 49.3173 | 50 | -0.48 | 65 |
IV.ATCC.EHZ. | 2021-04-11T22:37:10.37 | 0.1 | undecidable | manual | S | 16 | 42.3243 | 50 | -0.2 | 93 |
IV.CESI.HHZ. | 2021-04-11T22:37:09.56 | 0.1 | undecidable | manual | S | 58 | 39.2274 | 50 | -0.17 | 94 |
IV.EL6.EHZ. | 2021-04-11T22:37:09.42 | 0.3 | undecidable | manual | P | 41 | 74.9694 | 50 | -0.12 | 67 |
IV.MGAB.HHZ. | 2021-04-11T22:37:08.00 | 0.1 | undecidable | manual | S | 289 | 32.8449 | 104 | 0.02 | 98 |
IV.ASSB.HHZ. | 2021-04-11T22:37:06.14 | 0.1 | undecidable | manual | S | 28 | 28.1496 | 107 | -0.3 | 93 |
IV.MURB.HHZ. | 2021-04-11T22:37:06.06 | 0.3 | undecidable | manual | P | 3 | 49.3173 | 50 | 0.48 | 65 |
IT.FOPC.HGZ. | 2021-04-11T22:37:05.23 | 0.3 | undecidable | manual | S | 45 | 23.8539 | 110 | 0.23 | 71 |
IV.CESI.HHZ. | 2021-04-11T22:37:04.03 | 0.1 | undecidable | manual | P | 58 | 39.2274 | 50 | 0.01 | 97 |
IV.CESX.HHZ. | 2021-04-11T22:37:04.84 | 0.1 | undecidable | manual | S | 162 | 24.4533 | 109 | -0.38 | 92 |
IV.ATCC.EHZ. | 2021-04-11T22:37:04.32 | 0.1 | undecidable | manual | P | 16 | 42.3243 | 50 | -0.18 | 93 |
IV.MGAB.HHZ. | 2021-04-11T22:37:03.00 | 0.1 | undecidable | manual | P | 289 | 32.8449 | 104 | -0.01 | 98 |
IV.ASSB.HHZ. | 2021-04-11T22:37:02.11 | 0.1 | undecidable | manual | P | 28 | 28.1496 | 107 | -0.01 | 99 |
IV.CESX.HHZ. | 2021-04-11T22:37:01.77 | 0.1 | undecidable | manual | P | 162 | 24.4533 | 109 | 0.35 | 93 |
IT.FOPC.HGZ. | 2021-04-11T22:37:01.74 | 0.3 | undecidable | manual | P | 45 | 23.8539 | 110 | 0.45 | 68 |
IV.MOMA.HHZ. | 2021-04-11T22:36:59.76 | 0.1 | undecidable | manual | S | 105 | 6.3936 | 143 | -0.14 | 100 |
IT.GNU.HGZ. | 2021-04-11T22:36:59.74 | 0.1 | undecidable | manual | S | 105 | 6.3936 | 143 | -0.16 | 100 |
IV.MOMA.HHZ. | 2021-04-11T22:36:58.50 | 0.1 | undecidable | manual | P | 105 | 6.3936 | 143 | 0.16 | 100 |
IT.GNU.HGZ. | 2021-04-11T22:36:58.50 | 0.1 | undecidable | manual | P | 105 | 6.3936 | 143 | 0.15 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.MGAB.HHE. | ML:0.7 | 0.000018922315 | 0.0896 | AML | other | m | 2021-04-11T22:37:08.52 |
IV.MGAB.HHN. | ML:0.8 | 0.000027038180000000003 | 0.384 | AML | other | m | 2021-04-11T22:37:08.45 |
IV.CESX.HHE. | ML:0.7 | 0.000029517269999999997 | 0.256 | AML | other | m | 2021-04-11T22:37:05.13 |
IV.CESX.HHN. | ML:0.9 | 0.000045931715 | 0.32 | AML | other | m | 2021-04-11T22:37:05.36 |
IV.CESI.HHE. | ML:1.0 | 0.000041960215 | 0.2432 | AML | other | m | 2021-04-11T22:37:09.84 |
IV.CESI.HHN. | ML:1.2 | 0.000059250835 | 0.2432 | AML | other | m | 2021-04-11T22:37:10.05 |
IV.ATCC.EHE. | ML:1.3 | 0.000059856310000000006 | 0.3712 | AML | other | m | 2021-04-11T22:37:10.97 |
IV.MURB.HHN. | ML:1.4 | 0.000072588085 | 0.3584 | AML | other | m | 2021-04-11T22:37:13.09 |
IV.MURB.HNE. | ML:1.5 | 0.00007771778999999999 | 0.384 | AML | other | m | 2021-04-11T22:37:12.93 |