Earthquake with magnitude of ML 2.0 on date 23-10-2018 and time 19:18:46 (UTC) in region 6 km NW Accumoli (RI)

A magnitude ML 2.0 earthquake occured in region: 6 km NW Accumoli (RI), on

  • 23-10-2018 19:18:46 (UTC)
  • 23-10-2018 21:18:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.73, 13.2 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Accumoli RI 6 667 667
Arquata del Tronto AP 10 1178 1845
Norcia PG 11 4957 6802
Cittareale RI 13 482 7284
Amatrice RI 13 2657 9941
Cascia PG 15 3217 13158
Montegallo AP 17 523 13681
Acquasanta Terme AP 18 2916 16597
Castelsantangelo sul Nera MC 19 281 16878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
45 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
48 Km E of Terni (111501 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km W of Chieti (51815 inhabitants)
91 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 2.0 2018-10-23
19:18:46
42.73 13.19 11 2019-06-04
09:16:05
Bollettino Sismico Italiano INGV 64572011
Rev 100 ML 2.0 2018-10-23
19:18:46
42.73 13.19 11 2018-10-23
19:30:28
Sala Sismica INGV-Roma 62256361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-23 19:18:46 ± 0.05
Latitude 42.73 ± 0.00
Longitude 13.19 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 64572011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 356
Semi-minor axis of confidence ellipse (meter) 135
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 244
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 31
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 58
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.11331
Epicentral distance of station farthest from the epicenter (degree) 0.93979
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 39
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 64
Type of magnitude ML
Reference to an origin 64572011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-01-07 13:53:36

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 72
Type of magnitude ML
Reference to an origin 62256361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-23 19:30:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2018-10-23T19:19:04.20 0.3 undecidable manual P 329 0.9398 50 0.2 61
IV.MOMA.HHZ. 2018-10-23T19:19:03.70 0.3 undecidable manual S 280 0.4641 50 0.94 53
IV.FIAM.HHZ. 2018-10-23T19:19:02.96 0.3 undecidable manual S 187 0.4632 50 0.23 67
IV.INTR.HHZ. 2018-10-23T19:19:02.64 0.6 undecidable manual P 144 0.8876 50 -0.47 39
IV.MGAB.HHZ. 2018-10-23T19:19:02.49 0.3 undecidable manual P 283 0.8148 50 0.63 56
IV.SSFR.HHZ. 2018-10-23T19:19:01.35 0.6 undecidable manual P 337 0.7689 50 0.27 42
IV.ARVD.HHZ. 2018-10-23T19:19:01.45 0.3 undecidable manual P 347 0.7914 50 -0.01 65
IV.CERT.HHZ. 2018-10-23T19:19:01.31 0.3 undecidable manual P 191 0.7941 50 -0.2 63
IV.MML1.HNE. 2018-10-23T19:19:01.62 0.3 undecidable manual S 337 0.4182 50 0.22 68
IV.CSP1.EHZ. 2018-10-23T19:19:00.00 0.6 undecidable manual S 1 0.3633 50 0.22 46
IV.MURB.HHZ. 2018-10-23T19:19:00.46 0.6 undecidable manual P 318 0.7249 50 0.13 43
IV.GIGS.HHZ. 2018-10-23T19:19:00.28 0.3 undecidable manual S 135 0.3912 50 -0.31 67
IV.FOSV.EHZ. 2018-10-23T19:18:59.01 0.3 undecidable manual P 331 0.6493 50 -0.02 67
IV.MF5.EHZ. 2018-10-23T19:18:59.44 0.3 undecidable manual S 37 0.3238 50 0.83 57
IV.CESI.HHZ. 2018-10-23T19:18:59.28 0.3 undecidable manual S 323 0.3489 50 -0.06 71
IV.T0110.HHZ. 2018-10-23T19:18:59.01 0.3 undecidable manual P 139 0.6574 50 -0.17 65
IV.EL6.EHZ. 2018-10-23T19:18:58.14 0.1 undecidable manual P 354 0.6043 50 -0.13 89
IV.TERO.HHZ. 2018-10-23T19:18:58.45 0.3 undecidable manual S 109 0.3184 50 0.01 72
IV.VCEL.EHZ. 2018-10-23T19:18:58.16 0.3 undecidable manual P 125 0.581 50 0.29 65
IV.FDMO.HHZ. 2018-10-23T19:18:58.33 0.6 undecidable manual S 346 0.3184 50 -0.1 47
IV.SNTG.HHZ. 2018-10-23T19:18:57.30 0.3 undecidable manual P 341 0.5585 50 -0.18 66
IV.FAGN.HHZ. 2018-10-23T19:18:57.04 0.3 undecidable manual P 148 0.5441 50 -0.19 66
IV.ASSB.HHZ. 2018-10-23T19:18:56.27 0.3 undecidable manual P 309 0.5027 50 -0.26 66
IV.CAMP.HHZ. 2018-10-23T19:18:56.22 0.3 undecidable manual S 141 0.2482 50 -0.15 71
IV.FEMA.HNZ. 2018-10-23T19:18:56.39 0.3 undecidable manual S 336 0.2572 50 -0.22 70
IV.RM33.HNZ. 2018-10-23T19:18:55.55 0.3 undecidable manual S 176 0.2194 50 0.04 73
IV.MOMA.HHZ. 2018-10-23T19:18:55.92 0.6 undecidable manual P 280 0.4641 50 0.05 46
IV.FIAM.HHZ. 2018-10-23T19:18:55.73 0.1 positive manual P 187 0.4632 50 -0.13 91
IV.MDAR.HNN. 2018-10-23T19:18:55.73 0.1 undecidable manual P 355 0.4658 50 -0.17 90
IV.OFFI.HHZ. 2018-10-23T19:18:55.86 0.1 undecidable manual P 60 0.4155 50 0.83 74
IV.CESX.HHZ. 2018-10-23T19:18:55.91 0.6 undecidable manual P 255 0.4623 50 0.07 46
IV.GIGS.HHZ. 2018-10-23T19:18:54.29 0.3 undecidable manual P 135 0.3912 50 -0.33 67
IV.MML1.HNE. 2018-10-23T19:18:54.86 0.1 undecidable manual P 337 0.4182 50 -0.22 90
IV.GUMA.HNN. 2018-10-23T19:18:54.15 0.1 undecidable manual P 17 0.3498 50 0.23 91
IV.MC2.EHZ. 2018-10-23T19:18:54.92 0.6 undecidable manual S 359 0.1835 50 0.49 45
IV.MMO1.EHZ. 2018-10-23T19:18:54.53 0.3 undecidable manual S 29 0.197 50 -0.3 70
IV.CSP1.EHZ. 2018-10-23T19:18:54.00 0.1 positive manual P 1 0.3633 50 -0.15 93
IV.PF6.EHN. 2018-10-23T19:18:54.72 0.1 undecidable manual P 360 0.4092 50 -0.22 91
IV.CESI.HHZ. 2018-10-23T19:18:53.76 0.1 positive manual P 323 0.3489 50 -0.14 93
IV.MTRA.HNZ. 2018-10-23T19:18:53.09 0.6 undecidable manual S 79 0.1511 123 -0.26 47
IV.FDMO.HHZ. 2018-10-23T19:18:53.11 0.1 positive manual P 346 0.3184 50 -0.26 91
IV.ARRO.EHZ. 2018-10-23T19:18:53.73 0.1 undecidable manual P 245 0.3489 50 -0.17 93
IV.LNSS.HHZ. 2018-10-23T19:18:53.99 0.3 undecidable manual S 222 0.1691 120 0.04 74
IV.TERO.HHZ. 2018-10-23T19:18:53.22 0.1 undecidable manual P 109 0.3184 50 -0.16 93
IV.MF5.EHZ. 2018-10-23T19:18:53.75 0.1 positive manual P 37 0.3238 50 0.28 91
IV.SMA1.EHZ. 2018-10-23T19:18:53.13 0.3 undecidable manual S 133 0.1421 124 0.06 74
IV.FEMA.HNZ. 2018-10-23T19:18:52.17 0.1 positive manual P 336 0.2572 50 -0.15 95
IV.NRCA.HNZ. 2018-10-23T19:18:52.03 0.3 undecidable manual S 331 0.1205 129 -0.38 69
IV.T1299.HNZ. 2018-10-23T19:18:52.48 0.3 undecidable manual S 146 0.1133 130 0.27 71
IV.CAMP.HHZ. 2018-10-23T19:18:52.08 0.1 positive manual P 141 0.2482 50 -0.1 96
IV.MC2.EHZ. 2018-10-23T19:18:51.03 0.1 positive manual P 359 0.1835 50 -0.03 98
IV.MMO1.EHZ. 2018-10-23T19:18:51.17 0.1 positive manual P 29 0.197 50 -0.12 96
IV.RM33.HNZ. 2018-10-23T19:18:51.66 0.1 positive manual P 176 0.2194 50 -0.03 98
IV.T1299.HNZ. 2018-10-23T19:18:50.14 0.1 negative manual P 146 0.1133 130 0.37 93
IV.SMA1.EHZ. 2018-10-23T19:18:50.41 0.1 undecidable manual P 133 0.1421 124 0.13 97
IV.MTRA.HNZ. 2018-10-23T19:18:50.45 0.1 positive manual P 79 0.1511 123 0.01 99
IV.LNSS.HHZ. 2018-10-23T19:18:50.80 0.1 positive manual P 222 0.1691 120 0.01 99
IV.NRCA.HNZ. 2018-10-23T19:18:49.91 0.1 positive manual P 331 0.1205 129 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:3.1 0.013026565 0.1408 AML other m 2018-10-23T19:18:52.26
IV.NRCA.HNN. ML:2.9 0.0079735075 0.1408 AML other m 2018-10-23T19:18:52.21
IV.NRCA.HHN. ML:3 0.0091884475 0.1408 AML other m 2018-10-23T19:18:52.21
IV.NRCA.HHE. ML:3.2 0.01452657 0.1408 AML other m 2018-10-23T19:18:52.27
IV.SMA1.EHE. ML:2.4 0.0021781195 0.1536 AML other m 2018-10-23T19:18:54.14
IV.SMA1.EHN. ML:2.1 0.001242075 0.1024 AML other m 2018-10-23T19:18:53.97
IV.MTRA.EHE. ML:2.4 0.0022520805 0.2048 AML other m 2018-10-23T19:18:53.25
IV.MTRA.EHN. ML:2.4 0.002173461 0.1152 AML other m 2018-10-23T19:18:53.59
IV.MTRA.HNE. ML:2.4 0.001943041 0.2304 AML other m 2018-10-23T19:18:53.25
IV.MTRA.HNN. ML:2.4 0.002130534 0.1152 AML other m 2018-10-23T19:18:53.59
IV.LNSS.HHE. ML:2.4 0.0018650555 0.1536 AML other m 2018-10-23T19:18:54.94
IV.LNSS.HHN. ML:2.3 0.001710103 0.1152 AML other m 2018-10-23T19:18:54.64
IV.RM33.EHN. ML:2.3 0.0011549503 0.1408 AML other m 2018-10-23T19:18:55.99
IV.RM33.HNN. ML:2.3 0.001205018 0.1408 AML other m 2018-10-23T19:18:55.99
IV.RM33.EHE. ML:2.3 0.001281773 0.1152 AML other m 2018-10-23T19:18:56.43
IV.RM33.HNE. ML:2.3 0.0012668455 0.128 AML other m 2018-10-23T19:18:56.43
IV.GAVE.HNN. ML:1.8 0.00039416425 0.128 AML other m 2018-10-23T19:18:56.10
IV.GAVE.HNE. ML:2.3 0.001205558 0.2048 AML other m 2018-10-23T19:18:56.00
IV.GAVE.EHE. ML:2.3 0.001179898 0.192 AML other m 2018-10-23T19:18:56.00
IV.GAVE.EHN. ML:2.4 0.0013633695 0.192 AML other m 2018-10-23T19:18:56.10
IV.CAMP.HHE. ML:1.6 0.00021735595 0.1408 AML other m 2018-10-23T19:18:56.56
IV.CAMP.HHN. ML:1.7 0.00027535025 0.3072 AML other m 2018-10-23T19:18:56.48
IV.FDMO.HHN. ML:1.9 0.0003350177 0.256 AML other m 2018-10-23T19:18:59.09
IV.FDMO.HHE. ML:1.9 0.0003219918 0.1152 AML other m 2018-10-23T19:19:01.08
IV.TERO.HNE. ML:1.5 0.00013541465 0.128 AML other m 2018-10-23T19:18:58.60
IV.TERO.HHE. ML:1.9 0.000347053 0.064 AML other m 2018-10-23T19:18:58.97
IV.TERO.HNN. ML:1.6 0.0001773798 0.0896 AML other m 2018-10-23T19:18:58.88
IV.TERO.HHN. ML:2 0.0004374184 0.1024 AML other m 2018-10-23T19:18:58.88
IV.ARRO.EHE. ML:1.8 0.0002289354 0.2176 AML other m 2018-10-23T19:19:00.14
IV.ARRO.EHN. ML:1.7 0.0001922085 0.2304 AML other m 2018-10-23T19:19:01.72
IV.MF5.EHN. ML:1.7 0.0002069676 0.384 AML other m 2018-10-23T19:19:03.71
IV.MF5.EHE. ML:1.9 0.0002918368 0.3584 AML other m 2018-10-23T19:19:02.60
IV.CESI.HHN. ML:2.2 0.00051476685 0.2432 AML other m 2018-10-23T19:18:59.51
IV.CESI.HHE. ML:1.9 0.0002671451 0.1408 AML other m 2018-10-23T19:19:00.20
IV.CSP1.EHE. ML:2 0.0003543939 0.1408 AML other m 2018-10-23T19:19:00.76
IV.CSP1.EHN. ML:1.9 0.0002950076 0.2176 AML other m 2018-10-23T19:19:02.03
IV.GIGS.HHN. ML:1.3 5.9057195E-5 0.0768 AML other m 2018-10-23T19:19:01.93
IV.GIGS.HHE. ML:1.3 6.609644E-5 0.128 AML other m 2018-10-23T19:19:02.50
IV.FIAM.HHE. ML:1.7 0.0001296309 0.1792 AML other m 2018-10-23T19:19:03.80
IV.FIAM.HHN. ML:1.7 0.00013278863 0.2176 AML other m 2018-10-23T19:19:06.11
IV.OFFI.HHE. ML:2 0.0003030734 0.2304 AML other m 2018-10-23T19:19:05.89
IV.OFFI.HHN. ML:2 0.00025762515 0.4608 AML other m 2018-10-23T19:19:06.11
IV.CESX.HHE. ML:1.6 9.2850205E-5 0.3328 AML other m 2018-10-23T19:19:08.11
IV.CESX.HHN. ML:1.5 8.665546E-5 0.1536 AML other m 2018-10-23T19:19:06.43
IV.MOMA.HHN. ML:2 0.0002278315 0.2048 AML other m 2018-10-23T19:19:06.18
IV.MOMA.HNE. ML:2.4 0.00066867935 0.2432 AML other m 2018-10-23T19:19:04.80
IV.MOMA.HHE. ML:2.4 0.00071834545 0.2432 AML other m 2018-10-23T19:19:04.67
IV.ASSB.HHE. ML:1.8 0.00015029615 0.1536 AML other m 2018-10-23T19:19:06.15
IV.FAGN.HHE. ML:2.1 0.00027432415 0.4608 AML other m 2018-10-23T19:19:12.64
IV.FAGN.HHN. ML:2 0.0002130897 0.4224 AML other m 2018-10-23T19:19:09.34
IV.SNTG.HHN. ML:1.8 0.000111083585 0.1408 AML other m 2018-10-23T19:19:09.28
IV.SNTG.HHE. ML:1.4 4.6233495E-5 0.128 AML other m 2018-10-23T19:19:09.33
IV.EL6.EHN. ML:2 0.00017453745 0.3328 AML other m 2018-10-23T19:19:11.60
IV.EL6.EHE. ML:1.9 0.00013517374 0.1792 AML other m 2018-10-23T19:19:12.34
IV.VCEL.EHN. ML:1.8 0.00012151182 0.3456 AML other m 2018-10-23T19:19:13.23
IV.T0110.HHE. ML:1.9 0.0001288907 0.4608 AML other m 2018-10-23T19:19:16.22
IV.FOSV.EHE. ML:1.6 6.469872E-5 0.256 AML other m 2018-10-23T19:19:12.53
IV.T0110.HHN. ML:1.8 9.680795E-5 0.32 AML other m 2018-10-23T19:19:15.35
IV.FOSV.EHN. ML:1.7 7.365832E-5 0.2816 AML other m 2018-10-23T19:19:12.10
IV.MURB.HNN. ML:2.2 0.00020264563 0.3968 AML other m 2018-10-23T19:19:19.10
IV.MURB.HNE. ML:2.1 0.00019130255 0.256 AML other m 2018-10-23T19:19:18.39
IV.MURB.HHN. ML:2.1 0.00016310155 0.32 AML other m 2018-10-23T19:19:15.19
IV.MURB.HHE. ML:2.2 0.0002055667 0.256 AML other m 2018-10-23T19:19:18.39
IV.CERT.HHN. ML:1.7 5.8980075E-5 0.384 AML other m 2018-10-23T19:19:20.37
IV.CERT.HHE. ML:1.8 8.6607945E-5 0.4352 AML other m 2018-10-23T19:19:20.96
IV.SSFR.HNN. ML:2.1 0.00016067645 0.1408 AML other m 2018-10-23T19:19:17.46
IV.SSFR.HNE. ML:2.1 0.000166998 0.4224 AML other m 2018-10-23T19:19:23.17
IV.SSFR.HHE. ML:2.1 0.00015871025 0.1536 AML other m 2018-10-23T19:19:16.58
IV.ARVD.HHN. ML:1.5 3.625686E-5 0.2048 AML other m 2018-10-23T19:19:15.24
IV.ARVD.HHE. ML:1.5 4.017235E-5 0.1408 AML other m 2018-10-23T19:19:15.65
IV.ATFO.HHN. ML:1.7 5.888391E-5 0.4864 AML other m 2018-10-23T19:19:20.86
IV.ATFO.HHE. ML:1.6 5.3924695E-5 0.1792 AML other m 2018-10-23T19:19:16.22
IV.MGAB.HHE. ML:1.8 7.395335E-5 0.4736 AML other m 2018-10-23T19:19:21.62
IV.MGAB.HNE. ML:1.9 8.736029E-5 0.5376 AML other m 2018-10-23T19:19:21.36
IV.MGAB.HNN. ML:1.7 6.0687955E-5 0.3584 AML other m 2018-10-23T19:19:18.10
IV.MGAB.HHN. ML:1.7 5.553356E-5 0.3712 AML other m 2018-10-23T19:19:19.42
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in full SEED format Download