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Earthquakes at GNS

Earthquakes at GNS. Kevin Fenaughty GeoNet Data Centre Manager. Content. Hypocentres: origin time, latitude, longitude and depth Magnitudes Standard errors and quality information “Felt” reports. EVENT. LOCATION. MAGNITUDE. Structure. Each event can have many locations

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Earthquakes at GNS

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  1. Earthquakes at GNS Kevin Fenaughty GeoNet Data Centre Manager

  2. Content • Hypocentres: origin time, latitude, longitude and depth • Magnitudes • Standard errors and quality information • “Felt” reports

  3. EVENT LOCATION MAGNITUDE Structure • Each event can have many locations • Each location can have many magnitude determinations • Each event has a prime estimate to flatten the data for most purposes

  4. Major characteristics • Stored in Oracle • Real-time updates from a VMS client • Publicly available from www.geonet.org.nz

  5. Users • In-house GNS staff • World-wide research community • Insurance industry • Schools

  6. Uses • Plotting seismicity maps – generally the first step in any seismological study • Looking for statistical trends: developing forecasting techniques • Investigating damage claims

  7. New Zealand deep seismicity

  8. Relationships • Earthquakes are linked to both the GNS landslide database and the active faults database • Hypocentres above magnitude 3.7 are provided to the International Seismological Centre in the United Kingdom for their world-wide catalogue

  9. Development plans • After July 2003, to make earthquake waveform data publicly accessible • After January 2004, to allow “felt” reports to be made on-line by the general public • Long-term: get into scientists’ “bottom drawers” for special studies

  10. Volcanoes at GNS Kevin Fenaughty on behalf of Brad Scott Volcano Surveillance Coordinator

  11. Content • Visual observations • Photographs • Lake, stream and spring temperatures • Water and gas chemistry • Volcanic earthquakes • Volcanic tremor • Ground deformation • Geology

  12. Another day at the office…

  13. Structure • Much of the data is digital, but not in a relational database • Apart from geology, most data can be organised as a time series

  14. Users • Direct users: • In-house GNS staff • World-wide research community • Indirect users (value-added): • Local, regional and central government agencies • The tourism and aviation industry • Media and the public

  15. Uses • Development of volcano monitoring techniques • Quantifying volcano behaviour • Eruption prediction • Ashfall prediction for aviation industry

  16. Relationships • The collection of volcanic gas and water chemistry data will be added to the GNS groundwater database • Lightning and wind information is supplied by MetService

  17. Development plans • Use the same tables as the GNS groundwater database to store low-volume time series data • Develop web-based graphical tools for displaying time series parameters • Long-term: preserve the knowledge behind paper-based archives

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