Sinkhole hazard above salt, Dead Sea shore
amos frumkin
The hazard of sinkholes (collapse dolines) is commonly associated with karst (landscapes dominated by dissolution and subsurface drainage), where subsurface cavities undermine the overlying strata, causing ...

Influence of Dam Operations on Geomorphology and Sediment in the Colorado River corridor, Grand Canyon National Park, Arizona
Amy Draut
Large dams can greatly alter the physical and biological environments of rivers, by changing the magnitude and timing of flows, sediment transport, and water temperature. One of the most iconic landscapes in the ...

Cracking up: emerging evidence for the importance of the sun in the mechanical weathering of rocks
Martha Eppes, University of North Carolina at Charlotte
Introduction Physical weathering, through the breakdown of rock into sediment, plays a fundamental role in the rock cycle and potentially a key role in landscape evolution. In addition, the physical breakdown of ...

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 ...

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 ...

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 ...

Challenges associated with investigations into the geomorphology of other worlds: A case study examining glacier-like forms in the mid-latitudes of Mars
Colin Souness
Ever since global imagery of Mars was first gathered and transmitted back to Earth in 1971 by the Mariner 9 orbiter, geomorphologists have remarked upon the abundance of landforms which seem to suggest the action ...

Soil-water-rock interactions I: The pediment problem
Mark Strudley
You may have not initially appreciated that piedmonts (landscapes between steep mountain masses and depositional basins) are not all covered by alluvial fans. In fact, piedmonts, along with adjoining low-relief ...