Images

Helicopters and satellite phones were integral to the geologic field response. Here, Peter Haeussler is calling a seismologist to pass along the discovery of the Susitna Glacier thrust fault. View is to the north up the Susitna Glacier. The Denali fault trace lies in the background where the two landslides can be seen.

View south along the Trans Alaska Pipeline in the zone where it was engineered for the Denali fault. The fault trace passes beneath the pipeline between the 2nd and 3rd slider supports at the far end of the zone. A large arc in the pipe can be seen in the pipe on the right, due to shortening of the zigzag-shaped pipeline trace within the fault zone.

Patty Craw, DGGS, stands in front of the Susitna Glacier thrust fault. The November 3 earthquake started with an M7.2 earthquake along this fault.

Peter Haeussler examining the Denali fault trace on the Susitna Glacier to find matching ice surfaces to determine amount of fault offset.

The fault scarp created a waterfall in the transition region between the Denali fault and the Totschunda fault.

The fault scarp created a waterfall in the transition region between the Denali fault and the Totschunda fault.

Right step in Denali fault trace on Black Rapids Glacier caused extension of the glacier. Landslide debris in background.

Peter Haeussler prepares to measure the offset of a crevasse on the Canwell Glacier.

View southward toward Mt. McGinnis and two large landslides on the northeastern side. These slides had roughly 40 million cubic meters of material and travelled 10 km down glacier. This is the cover photo of the May 16th, 2003, Science.

Bone Creek, 5.5 meter offset measured here. The fault trace runs along the sharp bank edge at the right of the photo, from the bottom center toward the upper right.

Denali fault near headwaters of Chistochina River, view to the south. Dark blur at top of photo is rotor blade.

View westward up Black Rapids Glacier at large landslides.

View north of Denali fault trace at Gillette Pass. this view shows that the surface rupture reoccupies the previous fault scarp. Also the right-lateral offset of these stream gullies has developed since deglaciation in the last 10,000 years or so.

View down west fork of Chistochina Glacier. Denali fault can be seen crossing the glacier, Wrangell volcanoes in the distance.

West fork of Chistochina Glacier. Denali fault trace here is parallel to the moraine, indicating that the structure of the glacier ice is influencing the surface trace of the fault.

View west over pass between Canwell and Chistochina Glaciers. Two fault traces here may indicate the glacier ice is influencing the fault trace.

View of Denali fault trace in Chistochina River valley.

View westward up Black Rapids Glacier at large landslides.

Denali fault crossing stream near headwaters of Chistochina River. Stream offset was 4.8m. Perhaps better than the previous photo.

View of central Alaska Range from the south.

View westward up Black Rapids Glacier at large landslides.