Debris covered ice of Ladd Glacier, Mount Hood

In my quest to rephotograph all of Reid’s 1901 glacier images around Mount Hood and Mount Adams, I hiked to the moraines of Ladd Glacier on the north side of Mount Hood. I knew the glacier no longer occupied the the frame, but I was curious nonetheless. Below is the repeat image.

Ladd Glacier, Station 1002

The image on the left features a debris covered glacier terminus. Exposed ice can be seen just left of the water mark. Not surprising the glacier has retreated from the modern frame on the right... but how far?

Panorama with Harry Reid's 1901 image registered in space. Red dot indicates glacier terminus in 1901.

Panning up the glacier from the 1901 glacier terminus (red dot in panorama) a small break in the rock debris revealed exposed ice (yellow dot). Has the glacier only retreated 230 meters since 1901? If so it would be comparable to the slow rates of retreat on nearby Coe and Eliot glaciers. They too have a large quantity of thick rock debris covering the glacier terminus. However, unlike those, the active glacier terminus (blue dot) of Ladd Glacier has retreated from the lower debris covered glacier, likely because of the smaller and lower elevation accumulation area.

Oblique aerial view of Ladd Glacier. (Google Earth image, August 2016

The lower debris covered ice is now stranded, though there is evidence of movement when comparing historical imagery. It makes me wonder, is this lower portion still Ladd Glacier? Or something else?

White River Glacier Station 983

The deep canyon below White River Glacier is the product of fire and ice. Volcanic eruptions, bulldozing glaciers, and lahars have created a raw and dynamic landscape on the southeast slope of Mount Hood. How fast is the landscape changing? Glacial moraines, often used to indicate past glacial extents, are heavily eroded or completely absent. Repeat historical photographs offer a view to how the canyon and the glacier has changed over the past 120 years. Harry F. Reid took two photographs from either side of the White River Glacier in 1901. These photos have the potential to assist with mapping the historical glacier perimeter but finding the location of the eastern photograph, frame 983, had vexed me during two previous visits. The photograph features the glacier terminus as viewed from the east with the top of the mountain obscured by clouds. In the foreground are two tree stumps, likely remnants of the ghost forest that formed by the Old Maid eruption in the late-1700s. The ty...

Glacier Rephotos from Mount Rainier

I posted a new batch of glacier repeat photos from Mount Rainier . Mount Rainier was quite an undertaking as it’s glaciers have been studied for a long time and there were many established photo stations. Last September I traveled to the mountain as part of the Glacier Rephoto Database Project to document the photo stations and acquire new repeat photographs to record the changes. Last year was focused on the Glacier-clad Volcanoes of the Pacific Northwest. Nisqually Glacier, Station 5 Mount Rainier is a big mountain compared to the other volcanoes in the Pacific Northwest and equally big is the quantity of ice. The grandeur of the mountain and expanse of ice has attracted numerous glacier studies over the past century including a number of repeat photography projects. Perhaps the most studied is the Nisqually Glacier. The glacier has undergone many changes over the past century. The three comparison photos from Station 5 illustrate the glacier a...

Rephotos of Mount Shasta Glaciers

I visited Mount Shasta on September 7, 2012 to reoccupy glacier photo stations established by Phil Rhodes in 1974. Phil is an expert on Mount Shasta’s glaciers and photographed the glaciers for several decades. I was fortunate to meet up with Phil for the first day of photographic surveys on Hotlum Glacier. Phil was invaluable in describing routes to stations and sharing his observations. I visited 10 of his stations at Hotlum, Bolam, Whitney, and Wintun glaciers over several days to record the station locations and rephotograph the scenes. Bolam Glacier: 1977 to 2012 The photo comparisons reveal the complex changes that have been occurring on Mount Shasta since the 1970s. Bolam Glacier receded, the Lower Wintun Glacier advanced, while others appear fairly stable. Past research has shown Whitney Glacier advancing since the 1950s through the early 2000s. The surface of Whitney Glacier appears to have lowered over the past 30 years from a photo station at 10,000 ft eleva...

basagix field notes

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