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GLACSWEB

GLACSWEB. Kirk Martinez, Jane K. Hart, Royan Ong & Joseph Stefanov, University of Southampton ; Ian Marshall & David Robinson, BTExact ; Nathan Boyd and John Argirakis, InteliSYS. Aims and Objectives. To monitor glacier dynamics as a contribution to the study of ‘Global Warming’

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GLACSWEB

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  1. GLACSWEB Kirk Martinez, Jane K. Hart, Royan Ong & Joseph Stefanov, University of Southampton; Ian Marshall & David Robinson,BTExact; Nathan Boyd and John Argirakis, InteliSYS

  2. Aims and Objectives • To monitor glacier dynamics as a contribution to the study of ‘Global Warming’ • To develop a pervasive sensor network • reusable, self-configuring, cheap • robust communications • adaptive behaviour • extensible ad-hoc networking for new sensors • low power • To produce generic components and expertise useful in other environments

  3. GLACSWEB Subglacial data Supraglacial data Pervasive computing

  4. System overview

  5. Preliminary Results from Briksdalsbreen in 2003 • Field results • Sensor network

  6. map

  7. Understanding the Subglacial Environment • Ground Penetrating Radar • Drilling & till sampling • Borehole camera

  8. Drilling and Till Sampling A hot-water drill made our holes – right down to 80m deep. Other tools allowed investigation of the material at the bottom

  9. Ice hole depth N 80m 82m Ice flow >38m 75m 76m 72m 65m 70m 55m Water drained 56m 62m 63m Water filled 0 10m

  10. Design, construction and final testing of the Probes

  11. Probes • Plastic case (10cm long) • PIC microcontroller • Radio Transceiver (868MHz) • A/D and amplifiers • Batteries • Sensors: tilt, temp, pressure • Real time clock

  12. Probe subsystems

  13. Probe pressure tests in Oceanography

  14. PCBs

  15. Base station • Measure snow levels, temp, box tilt, bat V • Radio links to Ref station and probes • DGPS • Large power supply and solar panel

  16. Base Station

  17. Reference station • Small Linux server • ISDN line • Backup of all data • Gets all DGPS data • Deposits data on Southampton server

  18. Reference Station ISDN link to internet

  19. System Timeline System on times: Data logging - 11 seconds GPS logging - 20 minutes Communication - 180, 300, 600 seconds (PR, BS, RS) Data transfer - when completed

  20. Summary • Characterised depth and nature of the bed • Designed, built, tested and deployed 9 probes • Set up Base Station and Reference station • ISDN link for the reference station was set up • SMS receiver was set up in Southampton

  21. Future development • Smaller probe electronics • Lower frequency probe communications • Probe positioning system • Investigate chirps and pulses • Web site data plots

  22. David Robinson, Daniel Miles, Jane Hart, Kirk Martinez, Sue Way & Royan Ong

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