Mount St. Helens: Instrumentation and Dome Growth, Feb - Mar 15, 2005

Growth and disintegration of lava spines continued at Mount St. Helens through the first 8 months of 2005. Rather than building a single dome-shaped structure, the new dome grew initially as a series of recumbent, smoothly surfaced spines that extruded to lengths of almost 500 m. The potential for unpredictable explosions induced decisions to minimize the exposure of field crews so most new and replacement instruments in the crater were deployed by helicopter sling. 

1. 2004-5 Dome and Surrounding Area of Deformation  February 1, 2005  (00:06)  
2. Glacier on East Side of 2004-5 Dome, and Disabled GPS Instrument "HNY" February 1, 2005  (01:55) 
3. "North Dome" Instrument Site on North Side of 1980-86 Dome February 1, 2005 (02:44)
4. "September Lobe" Instrument Site on Northwest Side of 1980-86 Dome  February 1, 2005 (02:59) 
5. Plate Boundary Observatory-USGS GPS Site Located on Southwest Flank of Mount St. Helens February 1, 2005 (03:19)
6. Forward Looking Infrared (FLIR) Thermal Imaging of 2004-5 Dome and Surrounding Area of Deformation   February 3, 2005  (03:38) 
7. Forward Looking Infrared (FLIR) Thermal Imaging of 2004-5 Dome and Surrounding Area of Deformation   February 16, 2005  (05:07) 
8. Deployment of GPS Instruments to Glacier on East Side of 2004-5 Dome  February 16, 2005  (06:16)  
9. Retrieval of GPS and Seismic Instrument "AHAD" From top of 2004-5 Dome  February 16, 2005  (07:16) 
10. Helicopter Collecting Rock Samples From the 2004-5 Dome February 22, 2005  (08:28)
11. 2004-5 Dome and Surrounding Area of Deformation  March 9, 2005  (12:05) 
12. 2004-5 Dome Viewed from "Sugarbowl" Camera Site March 9, 2005  (13:15) 
13. Ash Deposits on The Plains of Abraham Following the March 8, 2005 Eruption -- SE Flank of Mount St. Helens March 9, 2005  (13:49) 
14. Retrieval of Seismic Instrument "NED"  March 9, 2005  (14:19) 
15. Ash Deposits on East Crater after March 8, 2005 Eruption and 2004-5 Dome and Surrounding Area of Deformation   March 10, 2005  (15:10)
16. Deployment of GPS Instrument to "September Lobe" Site  March 10, 2005  (16:23)
17. Helicopter Retrieval of GPS Instrument From Glacier on East Side of 2004-5 Dome  March 10, 2005  (17:05)
18. Ash Deposits on East Crater after March 8, 2005 Eruption and 2004-5 Dome and Surrounding Area of Deformation   March 11, 2005  (18:54)
19. 2004-5 Dome and Surrounding Area of Deformation Including Ash Flow and Area Ballistic Impacts   March 15, 2005  (19:28)
20. Forward Looking Infrared (FLIR) Thermal Imaging of 2004-5 Dome and Surrounding Area of Deformation   March 15, 2005  (20:55)
21. Deployment of Seismic Instrument to "September Lobe" Site  March 15, 2005  (26:13)
22. Digital Fly-by of 2004-2005 Dome  February 1, 2005  (27:03)
23. Time Lapse Photography of Dome Growth  November 21, 2004 to March 15, 2005  (28:37)