1. Global Seismographic Network
and Antarctica
G-90-S
Rhett Butler
• Seismology since the IGY
• GSN since 1988

2. GSN MAP

3. POLAR SEISMIC COVERAGE
GSN + FDSN
Northern
Southern
10° Radii Circles

4. More Southern Polar Coverage Needed
Autonomous Geophysical Observatories (AGOs) should all have broadband seismometers
New GSN/FDSN Sites at Year-Round Antarctic Bases

5. ACES

6. SPRESSO South Pole Remote Earth Science and Seismological Observatory

7. SPRESSO Installation 2001-2003

8. QSPA: Quiet-sector South Pole, Antarctica

9. Infrastructure Available at SPRESSO
Quiet sector is established and truly quiet
Fiber-optic link to South Pole Station
4500 KVA Power Available, 1% used
Extraordinary NSF Infrastructure at Pole

10. Crystal Prism

11. Crystal LASA

12. AMANDA
Figures Courtesy of AMANDA Project

13. IceCube 80 Strings 4800 PMT Instrumented volume: 1 km3 (1 Gton)
AMANDA
South Pole
IceTop
Runway
80 Strings
4800 PMT
Instrumented volume: 1 km3
(1 Gton)
IceCube is designed to detect neutrinos of all flavors at energies from 107 eV (SN) to 1020 eV
Figure Courtesy of AMANDA/IceCube Project

14. CRYSTAL TELLUSCOPE (from tellus, Latin for Earth)
Test Remote RF Telemetry and Cold (-55°C) Guralp Seismometer
Develop and Deploy Test String
Deploy Inner 3-D Prism and First Ring
Deploy Outer Rings via AGOs

15. Dynamo

16. Polar Science Nanoearthquakes and Icequakes near the South Pole
Axis-symmetric Earth Structure
Inner Core
Outer Core Convection
Core-Mantle Boundary