Earthquake with magnitude of ML 2.6 on date 20-04-2019 and time 16:49:04 (Italy) in region 6 km NW Pontremoli (MS)

A magnitude ML 2.6 earthquake occured in region: 6 km NW Pontremoli (MS), on

  • 20-04-2019 14:49:04 (UTC)
  • 20-04-2019 16:49:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4060, 9.8200 at 5 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
Pontremoli MS 6 7357 7357
Zeri MS 7 1094 8451
Borgo Val di Taro PR 10 6999 15450
Albareto PR 11 2156 17606
Mulazzo MS 12 2424 20030
Filattiera MS 12 2309 22339
Zignago SP 15 532 22871
Compiano PR 16 1112 23983
Villafranca in Lunigiana MS 16 4770 28753
Sesta Godano SP 17 1377 30130
Bagnone MS 17 1887 32017
Rocchetta di Vara SP 18 703 32720
Berceto PR 18 2109 34829
Tornolo PR 18 1010 35839
Varese Ligure SP 18 2059 37898
Calice al Cornoviglio SP 18 1138 39036
Bedonia PR 19 3482 42518
Valmozzola PR 19 539 43057

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km N of La Spezia (93959 inhabitants)
43 Km NW of Carrara (63133 inhabitants)
48 Km NW of Massa (69479 inhabitants)
60 Km SW of Parma (192836 inhabitants)
69 Km NW of Viareggio (62467 inhabitants)
70 Km E of Genova (586655 inhabitants)
72 Km W of Reggio nell'Emilia (171345 inhabitants)
73 Km S of Piacenza (102191 inhabitants)
83 Km S of Cremona (71901 inhabitants)
83 Km NW of Lucca (89046 inhabitants)
90 Km NW of Pisa (89158 inhabitants)
92 Km W of Modena (184973 inhabitants)
94 Km W of Carpi (70699 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.6 2019-04-20
14:49:04
44.406 9.8202 5 2019-08-22
08:25:08
Bollettino Sismico Italiano INGV 70064381
Reviewed
Rev100
ML 2.5 2019-04-20
14:49:04
44.4242 9.8218 6 2019-04-20
15:02:24
Sala Sismica INGV-Roma 67785171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-20 14:49:04 ± 0.11
Latitude 44.4060 ± 0.0054
Longitude 9.8202 ± 0.0063
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 70064381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 579
Semi-minor axis of confidence ellipse (meter) 322
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 50
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.09182
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 41
Magnitudes information

ML:2.6

Field Value
Value 2.6
Uncertainty 0.3
Num. used stations 59
Type of magnitude ML
Reference to an origin 70064381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-06-30 10:23:24

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 67785171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-20 15:02:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.TUE.HHZ. 2019-04-20T14:49:41.65 3.0 undecidable manual P 232.1898 1.07 0
IV.QLNO.HHZ. 2019-04-20T14:49:39.36 1.0 undecidable manual S 266 117.2937 50 0.16 21
GU.CIRO.HHZ. 2019-04-20T14:49:39.05 0.6 undecidable manual P 308 220.9122 38 -0.13 27
ST.PANI.EHZ. 2019-04-20T14:49:38.48 0.6 undecidable manual P 32 217.4157 38 -0.26 27
GU.BHB.HHZ. 2019-04-20T14:49:38.01 1.0 undecidable manual P 284 207.4368 38 0.51 14
ST.DOSS.HHZ. 2019-04-20T14:49:36.14 0.6 undecidable manual P 33 195.5598 38 0.12 32
SI.LUSI.HHZ. 2019-04-20T14:49:35.68 0.6 undecidable manual P 27 193.4619 38 -0.08 32
ST.RONC.EHZ. 2019-04-20T14:49:35.81 1.0 undecidable manual P 19 185.5698 38 1.03 12
ST.VARA.EHZ. 2019-04-20T14:49:34.46 0.6 undecidable manual P 28 178.6878 50 0.61 31
CH.MUGIO.HHN. 2019-04-20T14:49:34.10 1.0 undecidable manual P 340 178.8876 50 0.22 17
IV.VARE.HHZ. 2019-04-20T14:49:34.75 0.6 undecidable manual P 333 181.7847 38 0.44 32
IV.MAGA.HHZ. 2019-04-20T14:49:32.08 0.6 undecidable manual P 22 164.613 50 0.4 35
IV.MBAL.EHZ. 2019-04-20T14:49:32.23 0.6 undecidable manual P 29 164.8128 50 0.51 34
IV.ROVR.HHZ. 2019-04-20T14:49:32.73 0.6 undecidable manual P 35 169.1085 50 0.36 35
IV.ZONE.HHZ. 2019-04-20T14:49:31.18 0.6 undecidable manual P 9 152.4363 50 1.37 24
IV.MDI.HHZ. 2019-04-20T14:49:31.01 0.6 undecidable manual P 357 151.5372 50 1.34 25
IV.RUFI.EHE. 2019-04-20T14:49:29.19 1.0 undecidable manual P 115 148.5402 50 -0.02 20
IV.OSSC.HNE. 2019-04-20T14:49:29.68 0.6 undecidable manual P 130 150.1386 50 0.22 39
GU.CANO.HHZ. 2019-04-20T14:49:27.04 3.0 undecidable manual P 0
IV.SEI.HHZ. 2019-04-20T14:49:27.04 1.0 undecidable manual P 107 128.3715 50 0.94 16
GU.RNCA.HHZ. 2019-04-20T14:49:26.04 0.3 undecidable manual S 276 69.1752 50 -0.33 68
IV.PRMA.HHZ. 2019-04-20T14:49:25.31 3.0 undecidable manual S 44 55.5999 50 2.57 0
IV.QLNO.HHZ. 2019-04-20T14:49:24.68 0.3 undecidable manual P 266 117.2937 50 0.29 62
IV.MPPT.EHN. 2019-04-20T14:49:24.72 0.3 undecidable manual P 116 112.5984 50 1.04 48
IV.CRMI.HHZ. 2019-04-20T14:49:24.43 0.3 undecidable manual P 126 114.4965 50 0.46 60
IV.MOCL.EHZ. 2019-04-20T14:49:24.73 0.6 undecidable manual P 112 116.994 50 0.38 41
IV.ZCCA.HNZ. 2019-04-20T14:49:22.46 1.0 undecidable manual P 93 91.8414 50 1.98 9
IV.MTCR.EHZ. 2019-04-20T14:49:22.70 0.6 undecidable manual P 114 102.9192 50 0.52 40
GU.PCP.HHN. 2019-04-20T14:49:22.19 1.0 undecidable manual P 279 102.0201 50 0.15 22
GU.SARM.EHZ. 2019-04-20T14:49:21.65 0.3 undecidable manual S 118 52.2033 50 -0.2 72
MN.VLC.HHZ. 2019-04-20T14:49:21.49 0.3 undecidable manual S 121 52.6029 50 -0.46 68
IV.PII.HHZ. 2019-04-20T14:49:20.73 0.6 undecidable manual P 143 94.4388 50 -0.14 45
GU.POPM.HHZ. 2019-04-20T14:49:19.51 0.6 undecidable manual P 118 84.5487 50 0.16 45
GU.GORR.HHZ. 2019-04-20T14:49:19.61 0.6 undecidable manual S 298 47.3193 50 -0.92 38
IV.BOB.HHZ. 2019-04-20T14:49:19.98 3.0 undecidable manual S 324 49.8168 50 -1.21 0
GU.MAIM.HHZ. 2019-04-20T14:49:18.06 0.6 undecidable manual P 135 76.368 50 -0.03 47
IV.NDIM.HNZ. 2019-04-20T14:49:18.99 3.0 undecidable manual P -4.45 0
IV.PLMA.HHZ. 2019-04-20T14:49:17.58 0.6 undecidable manual S 176 39.627 98 -0.45 46
IV.BDI.HNZ. 2019-04-20T14:49:17.18 0.6 undecidable manual P 121 72.4719 50 -0.31 45
GU.EQUI.HHE. 2019-04-20T14:49:17.62 0.3 undecidable manual S 135 37.5291 98 0.31 72
GU.RNCA.HHZ. 2019-04-20T14:49:16.81 0.6 undecidable manual P 276 69.1752 50 -0.18 47
GU.GSCL.HHZ. 2019-04-20T14:49:16.11 0.6 undecidable manual P 96 61.1943 50 0.36 46
GU.CARD.HHZ. 2019-04-20T14:49:16.61 0.3 undecidable manual P 128 67.377 50 -0.1 71
IV.PRMA.HHZ. 2019-04-20T14:49:15.06 0.6 undecidable manual P 44 55.5999 50 0.17 48
MN.VLC.HHZ. 2019-04-20T14:49:14.11 0.3 undecidable manual P 121 52.6029 50 -0.32 70
IV.BOB.HHZ. 2019-04-20T14:49:13.04 0.3 undecidable manual P 324 49.8168 50 -0.95 56
IV.MSSA.HHZ. 2019-04-20T14:49:13.84 0.3 undecidable manual S 248 25.9518 102 0.47 71
GU.SARM.EHZ. 2019-04-20T14:49:13.90 0.3 undecidable manual P 118 52.2033 50 -0.48 68
IV.NEVI.HNE. 2019-04-20T14:49:12.80 0.6 undecidable manual P 63 43.9227 97 -0.23 48
GU.GORR.HHZ. 2019-04-20T14:49:12.69 0.1 undecidable manual P 298 47.3193 50 -0.92 76
GU.EQUI.HHE. 2019-04-20T14:49:11.48 0.1 negative manual P 135 37.5291 98 -0.27 97
GU.GRAM.HHZ. 2019-04-20T14:49:11.28 0.3 undecidable manual S 64 21.6672 104 -0.61 68
IV.PLMA.HHZ. 2019-04-20T14:49:11.99 0.3 undecidable manual P 176 39.627 98 -0.18 74
IV.MSSA.HHZ. 2019-04-20T14:49:09.81 0.1 positive manual P 248 25.9518 102 0.33 98
GU.GRAM.HHZ. 2019-04-20T14:49:08.38 0.1 positive manual P 64 21.6672 104 -0.25 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GRAM.HHE. ML:3.0 0.007072858499999999 0.2624 AML other m 2019-04-20T14:49:13.59
GU.GRAM.HHN. ML:3.0 0.007853955 0.3392 AML other m 2019-04-20T14:49:11.54
IV.MSSA.HHN. ML:2.7 0.0027696179999999997 0.3392 AML other m 2019-04-20T14:49:14.62
IV.MSSA.HHE. ML:2.6 0.002474484 0.2944 AML other m 2019-04-20T14:49:14.45
IV.PLMA.HHE. ML:2.1 0.0004862938 0.3008 AML other m 2019-04-20T14:49:18.13
IV.PLMA.HHN. ML:2.0 0.0003862841 0.1216 AML other m 2019-04-20T14:49:18.35
GU.GORR.HHE. ML:2.5 0.0010217662 0.32 AML other m 2019-04-20T14:49:22.70
GU.GORR.HHN. ML:2.4 0.0007755039 0.2368 AML other m 2019-04-20T14:49:20.15
IV.BOB.HNE. ML:2.6 0.0011501675 0.4416 AML other m 2019-04-20T14:49:21.44
IV.BOB.HNN. ML:2.6 0.0009608977 0.416 AML other m 2019-04-20T14:49:23.85
IV.BOB.HHE. ML:2.7 0.001314515 0.4416 AML other m 2019-04-20T14:49:21.22
IV.BOB.HHN. ML:2.6 0.00099409965 0.4224 AML other m 2019-04-20T14:49:23.85
GU.SARM.EHE. ML:2.8 0.001706686 0.3392 AML other m 2019-04-20T14:49:22.32
MN.VLC.HNN. ML:2.1 0.00033260645 0.6784 AML other m 2019-04-20T14:49:28.76
MN.VLC.HHE. ML:2.0 0.00025291025 0.416 AML other m 2019-04-20T14:49:23.14
MN.VLC.HHN. ML:2.0 0.00027857539999999996 0.6592 AML other m 2019-04-20T14:49:28.76
MN.VLC.HNE. ML:2.0 0.0002647764 0.3968 AML other m 2019-04-20T14:49:23.15
IV.PRMA.HHE. ML:3.1 0.0030671785 0.5184 AML other m 2019-04-20T14:49:26.52
IV.PRMA.HHN. ML:3.2 0.0034109844999999995 0.2624 AML other m 2019-04-20T14:49:26.20
GU.CARD.HHE. ML:2.4 0.0005474267 0.3392 AML other m 2019-04-20T14:49:30.44
GU.CARD.HHN. ML:2.4 0.00049482255 0.16 AML other m 2019-04-20T14:49:33.17
GU.RNCA.HHN. ML:2.5 0.00051840565 0.2176 AML other m 2019-04-20T14:49:26.53
GU.RNCA.HHE. ML:2.4 0.00042620415 0.2048 AML other m 2019-04-20T14:49:26.21
IV.NDIM.HNN. ML:2.7 0.00047508255 0.0576 AML other m 2019-04-20T14:49:20.36
GU.POPM.HHN. ML:2.5 0.0003706121 0.4224 AML other m 2019-04-20T14:49:34.77
GU.POPM.HHE. ML:2.5 0.0003898687 0.384 AML other m 2019-04-20T14:49:36.54
IV.PII.HHE. ML:2.6 0.0004470459 0.4416 AML other m 2019-04-20T14:49:35.70
IV.PII.HHN. ML:2.5 0.0003562824 0.3008 AML other m 2019-04-20T14:49:35.65
IV.QLNO.HHN. ML:2.4 0.00018202205 0.5632 AML other m 2019-04-20T14:49:41.24
IV.QLNO.HHE. ML:2.6 0.0003072964 0.64 AML other m 2019-04-20T14:49:40.79
GU.CANO.HHN. ML:3.0 0.00067953085 0.3584 AML other m 2019-04-20T14:49:45.30
IV.MDI.HHE. ML:3.0 0.0005560279500000001 0.3392 AML other m 2019-04-20T14:49:55.09
IV.MDI.HHN. ML:3.1 0.0007025890999999999 0.3584 AML other m 2019-04-20T14:49:53.28
IV.MDI.HNE. ML:3.0 0.0005687484 0.32 AML other m 2019-04-20T14:49:55.09
IV.MDI.HNN. ML:3.1 0.00060556365 0.3392 AML other m 2019-04-20T14:49:53.46
IV.ZONE.HHE. ML:2.9 0.00038426685 0.32 AML other m 2019-04-20T14:49:53.32
IV.ZONE.HHN. ML:3.0 0.00044918685000000004 0.2624 AML other m 2019-04-20T14:49:54.67
IV.MBAL.EHE. ML:3.0 0.00040119995 0.3776 AML other m 2019-04-20T14:49:56.09
IV.MBAL.HNN. ML:2.9 0.00033004815 0.4608 AML other m 2019-04-20T14:49:56.12
IV.MBAL.HNE. ML:2.8 0.0002775028 0.3584 AML other m 2019-04-20T14:49:55.90
IV.MBAL.EHN. ML:2.6 0.00018003350000000002 0.2944 AML other m 2019-04-20T14:49:59.34
IV.CSNT.HHN. ML:2.3 0.000089366815 0.5824 AML other m 2019-04-20T14:49:54.13
IV.CSNT.HHE. ML:2.1 0.00006526066999999999 0.4992 AML other m 2019-04-20T14:49:53.91
IV.VARE.HHN. ML:2.5 0.00011655935 0.7616 AML other m 2019-04-20T14:50:05.01
IV.VARE.HHE. ML:2.5 0.0001236078 0.3392 AML other m 2019-04-20T14:50:01.54
IV.PARC.HHE. ML:2.0 0.000029377865000000003 0.416 AML other m 2019-04-20T14:50:08.61
ST.DOSS.HNE. ML:3.1 0.00043256435 0.6016 AML other m 2019-04-20T14:50:06.20
ST.DOSS.HNN. ML:2.9 0.0002727193 0.5248 AML other m 2019-04-20T14:50:03.00
ST.DOSS.HHN. ML:3.1 0.00040957375000000003 0.5824 AML other m 2019-04-20T14:50:06.20
ST.DOSS.HHE. ML:3.0 0.00029599410000000003 0.544 AML other m 2019-04-20T14:50:03.00
GU.BHB.HHE. ML:2.6 0.00010847632500000001 0.704 AML other m 2019-04-20T14:50:07.32
GU.BHB.HHN. ML:2.6 0.000108993205 0.48 AML other m 2019-04-20T14:50:10.95
ST.PANI.EHN. ML:2.8 0.00014846180000000002 0.5376 AML other m 2019-04-20T14:50:09.21
ST.PANI.EHE. ML:2.6 0.000087774415 0.3456 AML other m 2019-04-20T14:50:09.67
GU.CIRO.HHE. ML:2.3 0.000044180405 0.4416 AML other m 2019-04-20T14:50:16.51
GU.CIRO.HHN. ML:2.3 0.00004276646 0.7616 AML other m 2019-04-20T14:50:12.50
MN.TUE.HHE. ML:2.4 0.00006158282 0.5824 AML other m 2019-04-20T14:50:08.00
MN.TUE.HNN. ML:2.3 0.000040362825 0.3584 AML other m 2019-04-20T14:50:09.98
MN.TUE.HNE. ML:2.3 0.00004426271 0.5184 AML other m 2019-04-20T14:50:09.76
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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 miniseed + resp format Download