A magnitude ML 1.0 earthquake occured in region: 3 km E Massa Martana (PG), on
and geographic coordinates (lat, lon) 42.7840, 12.5590 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 |
---|---|---|---|---|
Massa Martana | PG | 3 | 3770 | 3770 |
Giano dell'Umbria | PG | 6 | 3846 | 7616 |
Acquasparta | TR | 10 | 4778 | 12394 |
Castel Ritaldi | PG | 10 | 3278 | 15672 |
Todi | PG | 12 | 16851 | 32523 |
Gualdo Cattaneo | PG | 14 | 6155 | 38678 |
Montefalco | PG | 15 | 5679 | 44357 |
Spoleto | PG | 16 | 38218 | 82575 |
Collazzone | PG | 16 | 3473 | 86048 |
Montecastrilli | TR | 16 | 5022 | 91070 |
Bevagna | PG | 17 | 5081 | 96151 |
Avigliano Umbro | TR | 18 | 2558 | 98709 |
Fratta Todina | PG | 18 | 1839 | 100548 |
Monte Castello di Vibio | PG | 18 | 1567 | 102115 |
Campello sul Clitunno | PG | 18 | 2442 | 104557 |
Trevi | PG | 19 | 8469 | 113026 |
San Gemini | TR | 19 | 5018 | 118044 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-07-28 08:24:14 |
42.7838 | 12.5593 | 7 | 2021-07-28 08:31:13 |
Sala Sismica INGV-Roma | 93295361 |
Field | Value |
---|---|
Time (UTC) | 2021-07-28 08:24:14 ± 0.08 |
Latitude | 42.7838 ± 0.0045 |
Longitude | 12.5593 ± 0.0086 |
Depth (km) | 7 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 93295361 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 729 |
Semi-minor axis of confidence ellipse (meter) | 469 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 93 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 730.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 119 |
Number of associated phases, regardless of their use for origin computation | 13 |
Number of defining phases | 12 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.18 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.56387 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 93295361 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-07-28 08:31:13 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.APEC.HHZ. | 2021-07-28T08:24:40.22 | 3.0 | undecidable | manual | S | -0.02 | 0 | |||
IV.MGAB.HNZ. | 2021-07-28T08:24:28.19 | 0.6 | undecidable | manual | S | 292 | 39.1275 | 50 | -0.38 | 44 |
IV.CSP1.EHZ. | 2021-07-28T08:24:26.35 | 0.6 | undecidable | manual | P | 57 | 62.5929 | 50 | -0.05 | 46 |
IV.ASSB.HHZ. | 2021-07-28T08:24:25.47 | 0.3 | undecidable | manual | S | 16 | 29.8479 | 104 | -0.06 | 72 |
IV.NRCA.HHZ. | 2021-07-28T08:24:23.64 | 0.3 | positive | manual | P | 83 | 45.5211 | 50 | -0.13 | 69 |
IV.MGAB.HNZ. | 2021-07-28T08:24:23.20 | 0.6 | undecidable | manual | P | 292 | 39.1275 | 50 | 0.42 | 44 |
IV.CESX.HHZ. | 2021-07-28T08:24:22.07 | 0.6 | undecidable | manual | S | 173 | 19.5693 | 111 | -0.06 | 49 |
IV.ASSB.HHZ. | 2021-07-28T08:24:21.38 | 0.6 | positive | manual | P | 16 | 29.8479 | 104 | 0.36 | 45 |
IV.CESX.HHZ. | 2021-07-28T08:24:19.20 | 1.0 | undecidable | manual | P | 173 | 19.5693 | 111 | 0.14 | 24 |
IT.GNU.HGE. | 2021-07-28T08:24:17.48 | 0.3 | undecidable | manual | S | 22 | 2.3976 | 162 | -0.09 | 75 |
IV.MOMA.HHZ. | 2021-07-28T08:24:17.41 | 0.3 | undecidable | manual | S | 21 | 2.3976 | 162 | -0.16 | 74 |
IT.GNU.HGE. | 2021-07-28T08:24:16.54 | 0.1 | undecidable | manual | P | 22 | 2.3976 | 162 | 0.11 | 100 |
IV.MOMA.HHZ. | 2021-07-28T08:24:16.50 | 0.6 | undecidable | manual | P | 21 | 2.3976 | 162 | 0.07 | 50 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.CESX.HHN. | ML:1.0 | 0.00008275 | 0.16 | AML | other | m | 2021-07-28T08:24:22.47 |
IV.CESX.HHE. | ML:0.9 | 0.000057749999999999994 | 0.42 | AML | other | m | 2021-07-28T08:24:23.61 |
IV.NRCA.HHN. | ML:0.9 | 0.00002495 | 0.98 | AML | other | m | 2021-07-28T08:24:32.11 |
IV.NRCA.HHE. | ML:1.0 | 0.00002885 | 0.82 | AML | other | m | 2021-07-28T08:24:32.73 |