Natural and anthropogenic impacts on a freshwater wetland, Lake Bogoria, Kenya
gail ashley, Rutgers University-New Brunswick
Introduction Wetlands are an important water resource in arid regions (<400 mm annual precipitation) and may also provide grazing opportunities for farm animals. Permanent freshwater wetlands are also important ...

Soil geomorphology and change over time: A case study from the Catawba River, North Carolina
Anthony Layzell, University of Kansas Main Campus
Despite their value in Quaternary studies, relatively few soil chronosequences or long-term landscape evolution studies exist for the Piedmont physiographic province of the southeastern United States. Investigating ...

Fire geomorphology: Fire-related erosion helps to shape our landscapes
Kerry Riley
The frequency of large wildfires has increased on all vegetated continents (Bowman et al., 2009). Wildfires can have profound influences on erosion rates, particularly in steep mountain basins. Fire-related ...

Great Basin Dunes and Winds: What Might They Tell Us About the Geologic Record?
Paul Jewell, University of Utah
Dune fields have long been recognized as important geomorphic features of continents, both on the modern Earth and in the geologic record. While dunes can exhibit a variety of morphologies (McKee, 1979), they ...

Geomorphic Setting & Archaeology of the Cunene River, Namibia
Kathleen Nicoll, University of Utah
Introduction This vignette presents a virtual tour of the Cunene River, and a prehistoric archaeological site located on a fluvial terrace in northern Namibia. Today the Cunene River is an important transnational ...

Living on a slippery slope: Case studies of geologic hazards from the Wasatch Front, Utah
Kathleen Nicoll, University of Utah
Throughout their history, humans have fought the natural elements; we build shelters, roads, hospitals and malls wherever we can engineer "solutions" and strategies that permit us to thrive, even in harsh ...

Effective discharge in monsoon controlled rivers
Amanda Schmidt, Oberlin College
When does a river really carry sediment? Do lots of small floods carry as much sediment as a single big flood? Although we talk about average annual erosion rates, is sediment transport in rivers episodic rather ...

A new deglacial chronology of the Laurentide Ice Sheet in Wisconsin
David Ullman, University of Wisconsin-Madison
During the past 2.5 million years, the earth has seen a series of major ice sheets built through the slow accumulation of snow, followed by warming and rapid ice collapse. This fluctuation in global ice sheets is ...

The retreat chronology of the Laurentide Ice Sheet during the last 10,000 years and implications for deglacial sea-level rise
David Ullman, University of Wisconsin-Madison
Much of the world's population is located along the coasts. In a world of changing climate, the rate of sea level rise will determine the ability of these communities to adapt to sea level rise. Perhaps the ...

The degradation of glacial deposits in the McMurdo Dry Valleys, Antarctica
Dan Morgan, Vanderbilt University
Surface deposits such as glacial moraines and tills can yield significant information about the timing, extent, and rate of environmental change on Earth. In order to correctly interpret the record of past ...