Images

Tilt-leg spider on top of north-face of the new dome. This station houses GPS and an accelerometer.

Monitoring equipment installation on Mount St. Helens' dome. Camera/gas sampling station is to the right underneath helicopter. GPS/accelerometer (seismometer) spider is just visible as a speck on top of new dome.

Tilt-leg spider, a rapid-response instrument made to rest on top of the north-face of the 2005 Mount St. Helens lava dome. Includes GPS and seismometer.

New dome as seen from the remote camera on Sugar Bowl.

Sand and bricks deposited by the tsunami in an area of destruction on the East Coast of Sri Lanka at Kulmunai Kuddi.

Sand and bricks deposited by the tsunami in an area of destruction on the East Coast of Sri Lanka at Kulmunai Kuddi.

Dr. Starin Fernanda, Geological Survey & Mines Bureau of Sri Lanka, taking measurement of height of tsunami, indicated by gouge mark in tree from debris carried by the tsunami.

Dr. Starin Fernanda, Geological Survey & Mines Bureau of Sri Lanka, taking measurement of height of tsunami, indicated by gouge mark in tree from debris carried by the tsunami.

Dr. Starin Fernanda, Geological Survey & Mines Bureau of Sri Lanka, preparing a trench for sampling of tsunami deposit. Leaves on the surface days or weeks after the tsunami and blanket the sand deposited by the tsunami.

Dr. Starin Fernanda, Geological Survey & Mines Bureau of Sri Lanka, preparing a trench for sampling of tsunami deposit. Leaves on the surface days or weeks after the tsunami and blanket the sand deposited by the tsunami.

Tsunami sand deposit at Nilaveli Beach on the northeastern coast of Sri Lanka following the December 26th, 2004 earthquake and tsunami in the Indian Ocean. The sand deposited by the tsunami is light colored and overlies a pre-tsunami darker sandy soil.

Car transported by the 2004 tsunami in Sri Lanka.

Car transported by the 2004 tsunami in Sri Lanka.

On January 10, 2005, a landslide struck the community of La Conchita in Ventura County, California, destroying or seriously damaging 36 houses and killing 10 people. For a USGS rerpot on this event, please see USGS Open-file report, "Landslide Hazards at La Conchita, California."

Dome within Mount St. Helens' crater viewed from the west. January 2005.

Dome within Mount St. Helens' crater viewed from the southeast. January 2006

Dome within Mount St. Helens' crater, aerial view from the south.

North end of Mount St. Helens' new dome, as seen from the east.

Mount St. Helens' new dome, from the south. Orange speck in the center of the photo is a portable telemetered "spider." January 2005.

Spider, a portable box enclosing volcanic activity monitoring equipment (orange box), resting on Mount St. Helens' dome, viewed from the south.

Dome within Mount St. Helens' crater, January 2005, aerial view from the east.