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EPOS GNSS Data and Products TCS - What we do...

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EPOS GNSS Data and Products TCS - What we do...

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The EPOS Thematic Core Service (TCS) GNSS Data and Products focuses on developing an open source platform to store and disseminate data and metadata from GNSS stations operating in Europe. It provides access to an integrated European network of data providers through an e-infrastructure (with web interface) to disseminate the continuous GNSS data from existing Research Infrastructures.

The EPOS Thematic Core Service (TCS) GNSS Data and Products focuses on developing an open source platform to store and disseminate data and metadata from GNSS stations operating in Europe. It provides access to an integrated European network of data providers through an e-infrastructure (with web interface) to disseminate the continuous GNSS data from existing Research Infrastructures.

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EPOS GNSS Data and Products TCS - What we do...

  1. 1. GNSS DATA AND PRODUCTS TCS WHAT WE DO…
  2. 2. OVERVIEW The objective of EPOS-GNSS is to provide, through the European Plate Observing System (EPOS), access to GNSS data, metadata, and products in support of the Solid Earth Sciences. These efforts are done in close partnership with EUREF, the IAG sub- commission for the European Reference Frame. EPOS-GNSS supports Solid Earth Sciences in Europe through the European Plate Observing System (EPOS). Its goals are: • to facilitate access, through the European Plate Observing System (EPOS), to relevant GNSS data, metadata, and data products • to coordinate the archiving of relevant GNSS data, metadata and data products • to promote best practice for GNSS station operation, data quality control and data management • to maintain and distribute open source software for GNSS data and metadata discoverability • to maintain and develop GNSS data products
  3. 3. WHO WE ARE ADDITIONAL PARTNERS PROVIDING DDSS (DATA, DATA PRODUCTS, SERVICES, OR SOFTWARE) DURING THE OPERATIONAL PHASE OF EPOS • BKG | Bundesamt für Kartographie und Geodäsie, Germany • LM | Lantmäteriet, Sweden • WUT | Warsaw University of Technology, Faculty of Geodesy and Cartography, Poland WORKING TOGETHER TO PROVIDE GNSS DATA AND PRODUCTS IN EUROPE
  4. 4. OBJECTIVES The GNSS data and product portals: • aim to increase the quantity and availability of GNSS data at European level • deliver high quality data (with associated quality check indicators and metadata validation) and products such as: ► positions ► times series ► velocities ► strain rates • provide European researchers in Earth Sciences with relevant information The GNSS Data and Products TCS aims to help the scientific community to create new science related with the interaction between Space Geodesy and Solid Earth
  5. 5. SERVICES For the data distribution service, GNSS Data and Products TCS focuses on data (RINEX Files) that are periodically available, hours or days, after data acquisition. Through GLASS (Geodetic Linking Advanced Software System), an open source platform, all data and computed products (positions, times series, velocities and strain rates) from a set of connected but distributed repositories are made available for researchers in a uniform manner. EPOS GNSS gateways offers access to data and products from station belonging to EUREF and regional/national networks.
  6. 6. USE CASES • Sharing data with the community by adding GNSS stations/networks to the EPOS network • Discovery and download of GNSS data of stations running for at least 3 years and with data availability greater than 90% • Obtaining GNSS data for the estimation of Volcano deformation • Access to GNSS data quality results for monitoring purposes • Compute the velocity of a station using external information to detect co- seismic offsets • Volcano velocity/deformation field estimation for multidisciplinary modelling • Co-seismic displacements associated with a Mw7 earthquake • GNSS time series at the Eurasia-Nubia plate boundary • Compute the velocity of a station to detect post-seismic deformation
  7. 7. EXAMPLE OF USE CASE (TIME SERIES)
  8. 8. EXAMPLE OF USE CASE (VELOCITY FIELD)
  9. 9. CROSS BOUNDARIES WHAT IS THE CROSS-BOUNDARIES BETWEEN GNSS DATA AND PRODUCTS TCS AND THE OTHERS EPOS TCSS? • The Near-Fault Observatory, Satellite Data and Volcanology TCSs also use GNSS observations. The GLASS software package, that is used to disseminate the GNSS data, will also be useful for these TCS. • The Seismology TCS is also interested in using GNSS data. In the future we intend to provide real-time high-rate GNSS streaming which will be useful, in combination with seismological data, for early warning systems
  10. 10. TARGET WHO DO THESE SERVICES AND PRODUCTS TARGET? • Data Providers: those that want to use our services and tools (GLASS) to disseminate available GNSS data and metadata. • Users: scientists and others who want to discover, access and use the data and products. HOW THE ACCESS WORK? • Data Providers: Access requires that they agree to follow a set of guidelines and provide minimum service levels of data availability and quality check. • Users: Access is free for data users although some identification may be required.
  11. 11. GLASS DESCRIPTION AND COMPONENTS GLASS description: • Background ► it is based on a network of nodes hosting software developed to manage and store metadata, and distribute data, metadata and products. • Requirements ► a computer with Linux and Internet access • Licensing ► the GLASS package will be open source (Creative Commons) GLASS encompass the following key elements: • Physical components ► repositories (files and databases with data and products) • Web services ► portals, monitoring tools, data and product mining solutions • Software applications ► managing interactions between repositories and services (quality control, submission and validation, synchronization and consistency, redundancy and uniqueness)
  12. 12. GLASS FLOWCHART The infographic shows the flow of GNSS metadata, data and products within EPOS. The GNSS Data and Product gateways are the main points of access for the users. The long term monitoring of data in EPOS is carried out by the Quality Monitoring Centre (not part of GLASS package).
  13. 13. M3G CENTRE (SUBMISSION AND QC OF METADATA) M3G is the portal where operational centres (which operate the GNSS stations) can upload information about their centre (name, contacts, ...), the networks they manage (name, contacts, ...) and the station metadata (receiver, antenna, contacts, ...).
  14. 14. DATA GATEWAY GNSS Data Gateway Demo: https://youtu.be/f54nIliid5U
  15. 15. PRODUCT PORTAL GNSS Product Portal Demo: https://youtu.be/PpJyfFfCSkQ
  16. 16. FROM CHILDREN´S PERSPECTIVE Link: https://youtu.be/aDHwlRUm0gg

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