A magnitude ML 1.2 earthquake occured in region: 6 km NW Massa Martana (PG), on
and geographic coordinates (lat, lon) 42.8280, 12.4960 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 | 6 | 3770 | 3770 |
Giano dell'Umbria | PG | 7 | 3846 | 7616 |
Todi | PG | 9 | 16851 | 24467 |
Collazzone | PG | 9 | 3473 | 27940 |
Gualdo Cattaneo | PG | 10 | 6155 | 34095 |
Fratta Todina | PG | 11 | 1839 | 35934 |
Monte Castello di Vibio | PG | 12 | 1567 | 37501 |
Castel Ritaldi | PG | 14 | 3278 | 40779 |
Montefalco | PG | 15 | 5679 | 46458 |
Bevagna | PG | 15 | 5081 | 51539 |
Acquasparta | TR | 16 | 4778 | 56317 |
Marsciano | PG | 16 | 18902 | 75219 |
Deruta | PG | 18 | 9669 | 84888 |
San Venanzo | TR | 19 | 2218 | 87106 |
Montecastrilli | TR | 20 | 5022 | 92128 |
Avigliano Umbro | TR | 20 | 2558 | 94686 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.2 | 2021-07-28 17:34:42 |
42.8278 | 12.4962 | 8 | 2021-07-28 17:45:56 |
Sala Sismica INGV-Roma | 93314161 |
Field | Value |
---|---|
Time (UTC) | 2021-07-28 17:34:42 ± 0.07 |
Latitude | 42.8278 ± 0.0036 |
Longitude | 12.4962 ± 0.0049 |
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 | 93314161 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 439 |
Semi-minor axis of confidence ellipse (meter) | 423 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 72 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 440.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 173 |
Number of associated phases, regardless of their use for origin computation | 20 |
Number of defining phases | 11 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.11 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.58186 |
Number of stations at which the event was observed | 17 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 1.2 |
Uncertainty | 0.3 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 93314161 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-07-28 17:45:56 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.ESML.HHZ. | 2021-07-28T17:36:18.20 | 3.0 | positive | manual | Pg | 13.52 | 0 | |||
IV.VOBA.EHZ. | 2021-07-28T17:36:17.44 | 3.0 | undecidable | manual | Sg | 7.07 | 0 | |||
RF.GEPF.HHZ. | 2021-07-28T17:36:17.20 | 3.0 | undecidable | manual | Sn | -0.77 | 0 | |||
IV.EUCT.HNZ. | 2021-07-28T17:36:16.43 | 3.0 | undecidable | manual | Sn | 0.13 | 0 | |||
IV.ILOS.HHZ. | 2021-07-28T17:35:59.28 | 3.0 | positive | manual | Pn | 4.98 | 0 | |||
IV.CAVE.HHZ. | 2021-07-28T17:35:54.61 | 3.0 | undecidable | manual | Sg | 5.05 | 0 | |||
IV.GIZZ.HHZ. | 2021-07-28T17:35:54.73 | 3.0 | negative | manual | Pn | 0.42 | 0 | |||
CH.FUSIO.HHZ. | 2021-07-28T17:35:53.17 | 3.0 | positive | manual | Pn | 2.19 | 0 | |||
IV.VVLD.HHZ. | 2021-07-28T17:35:24.95 | 3.0 | undecidable | manual | S | 0.11 | 0 | |||
IV.CSP1.EHZ. | 2021-07-28T17:34:54.18 | 0.6 | negative | manual | P | 63 | 64.5909 | 50 | 0.08 | 46 |
IV.FDMO.HHZ. | 2021-07-28T17:34:52.30 | 0.6 | negative | manual | P | 64 | 53.3022 | 50 | -0.06 | 47 |
IV.ASSB.HHZ. | 2021-07-28T17:34:52.25 | 0.3 | undecidable | manual | S | 29 | 27.2505 | 107 | -0.01 | 76 |
IV.MML1.EHZ. | 2021-07-28T17:34:51.80 | 0.6 | undecidable | manual | P | 50 | 49.9167 | 50 | -0.05 | 48 |
IV.MGAB.HHZ. | 2021-07-28T17:34:49.04 | 0.3 | undecidable | manual | P | 287 | 32.6451 | 104 | -0.08 | 74 |
IV.CESI.HNN. | 2021-07-28T17:34:49.99 | 0.6 | undecidable | manual | P | 59 | 38.5281 | 50 | -0.1 | 48 |
IV.ASSB.HHZ. | 2021-07-28T17:34:48.17 | 0.6 | negative | manual | P | 29 | 27.2505 | 107 | 0.09 | 49 |
IT.GNU.HGZ. | 2021-07-28T17:34:45.90 | 0.3 | undecidable | manual | S | 114 | 6.5934 | 142 | -0.15 | 76 |
IV.MOMA.HHZ. | 2021-07-28T17:34:45.97 | 0.3 | undecidable | manual | S | 114 | 6.5934 | 142 | -0.08 | 77 |
IT.GNU.HGZ. | 2021-07-28T17:34:44.71 | 0.1 | undecidable | manual | P | 114 | 6.5934 | 142 | 0.21 | 100 |
IV.MOMA.HHZ. | 2021-07-28T17:34:44.69 | 1.0 | undecidable | manual | P | 114 | 6.5934 | 142 | 0.19 | 25 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.MOMA.HHE. | ML:1.8 | 0.001187 | 0.36 | AML | other | m | 2021-07-28T17:34:46.25 |
IV.MOMA.HHN. | ML:1.7 | 0.000886 | 0.74 | AML | other | m | 2021-07-28T17:34:46.90 |
IV.ASSB.HHE. | ML:1.0 | 0.000054199999999999996 | 0.58 | AML | other | m | 2021-07-28T17:34:52.45 |
IV.ASSB.HHN. | ML:1.0 | 0.0000535 | 0.2 | AML | other | m | 2021-07-28T17:34:52.52 |
IV.MGAB.HHE. | ML:0.9 | 0.00003594999999999999 | 0.64 | AML | other | m | 2021-07-28T17:34:55.43 |
IV.MGAB.HHN. | ML:1.1 | 0.00005395 | 0.92 | AML | other | m | 2021-07-28T17:34:55.77 |