1. GLACSWEB Kirk Martinez, Jane K. Hart, Royan Ong & Joseph Stefanov, University of Southampton; Ian Marshall & David Robinson,BTExact; 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 Pervasive computing Supraglacial data Subglacial data

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 10m0 N Ice flow 72m Water drained 70m 76m 80m Water filled 55m 65m 82m 56m 62m 63m 75m>38m

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. HoursProbeBase StationReference Station 0000Data logging-- 0400Data logging-- 0800Data logging-- 1200Data loggingGPS logging 1600Communication 1900--Data transfer 2000Data logging-- 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