Data Quality Control (QC)
The information regarding the AlpArray data quality control are mainteined here.
Please contact John Clinton, Irene Molinari or György Hetényi for additional information.
Backbone - PSD images
February 2018
Download here the PPSD plots for all available stations --- data from 2016 and part of 2017.
Data collected from EIDA nodes via arclink using obspy.
PSD gallery of the LMU operated stations can be found here.
PQLX PSD gallery of the ETH backbone stations (Z3) can be found here
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Methods - Codes - Presentations
Presentations
- Experience with the AASN data downloading, implementation of additional data quality control and application of a new arrival-time picker
by Luděk Vecsey (Institute of Geophysics of the Czech Academy of Science). First AlpArray Science Meeting 2018, Zurich CH. - AutoStatsQ: A toolbox for automated quality control of large seismic networks and its application to AlpArray & Swath-D
by Geza Petersen, S. Cesca, M. Kriegerowski, T. Plenefisch (GFZ, Potsdam). First AlpArray Science Meeting 2018, Zurich CH. - Data quality control: analysis of the AlpArray temporary stations in Czech Republic
by Luděk Vecsey, Helena Munzarová, Jaroslava Plomerová, Petr Jedlička, Josef Kotek (Institute of Geophysics of the Czech Academy of Science). Orfeus Meeting 2016, Dubrovnik, Croatia.
- AlpArray and EIDA from data supplier and data user perspective
by Florian Fuchs (University of Vienna). Orfeus Meeting 2016, Dubrovnik, Croatia.
Metadata changes log
Note from Antje Schloemer, LMU, 30 August
From Feb-Aug 2018 all hardware from stations located in DE (54) and OE (17) were changed as part of the migration from UNIBRA to DSEBRA. This involves all station originally installed and operated by DE partners (Bochum, LMU, Frankfurt, Kiel, Munster, GFZ, Leipzig). These stations are now operated by LMU.
Metadata from all stations is now managed by LMU. The majority of stations did not involve a change in location, so simply a new epoch is made.
Z3 Data (both realtime and archives) from DE partners is now exclusively offered by the LMU EIDA node.
All LMU stations are now realtime.
Specific station comments
A110A - operated by Hessischer Erdbebendienst, but data available through LMU
A142A - does not exist, the selected location operates as BW.MGS04
Dec 4 2017:
The station A020A has been closed and replaced with A020B. The configuration is identical, the station has just moved to an other building.
Coordinates: 46.948840 15.298745 390 Lannach, Austria
A020A closed on 2017-303 11:00:00
A020B opened on 2017-331 12:00:00
September 22 2017:
Reimported all Z3 stations from RESIF, France.
June 7 2017:
We imported a complete new version of the GFZ Z3 stations we got from Peter Evans by Mail. The changes include:
- A118A (Schrozberg) has been closed.
- A118B continues from A118A in almost the same location.
- There are some tiny changes in gains for some stations
(A111A, A112A, A114A, A115A at least)
compared to the last inventory file that we sent you (I think)
on Nov 23 2016.
May 10 2017
We have set the end date of the closed station Z3.A060A to 2017-02-16 10:00 and added the new station Z3.A060B .
March 1 2017:
Changed the station.archive element to SED for the following stations: 122A, A123A, A124A, A126A, A127A, A128A A038A A140A, A141A, A143A, A144A, A145A, A146A, A147A, A147B, A148A, A148B
February 27 2017:
Added missing HHE stream to station Z3.A104B
February 8 2017:
Updated station A334A with a new epoch because the sensor was rotated.
Data availability
Last update April 2018
Data quality check for single earthquakes
Data quality report from for 35 earthquakes in 2016 and 2017, The data were downloaded from EIDA. All data were systematically checked for data completeness, gaps and overlaps within a 1–2 hour time window after the origin time.
Download here the complete report.
The table below summarizes the findings for all of the 35 earthquakes and all permanent and temporary stations.
February 2018
Data completness check for 2016 data
Data completeness map (2016) of the AlpArray station from 1/1/16 to 01/01/2017. Data was downloaded from EIDA using arclink protocol (last check January 2018).
Data availability is calculated over the period of time from the installation date (or from 01/01/2016 if installed before) to 01/01/2017 (or to the end of the station operation if before 01/01/2017).
The station list is the list sent by AASN manager in August 2017.
The overall data collection reaches ~85% of completness and 78% for Z3.
Download here the single network data completness plots (one plot per Network code) for the first year - 2016 (last check January 2018)
Download here the PPSD plots for all available stations (data for all 2016 and part of 2017).
Summary of the single network performance. Period analyzed: from 01/01/2016 to 01/01/2017
Data availability is calculated over the time period from the installation date (or from 01/01/2016 if installed before) to 01/01/2017 (or end of the station operation if before 01/01/2017). The station list is from August 2017.
Summary table with contributions of each Z3 data collector in 2016.
Data availability is calculated over the time period from the installation date (or from 01/01/2016 if installed before) to 01/01/2017 (or end of the station operation if before 01/01/2017). The station list is from August 2017.
