Excavations in a playa along the 1992 rupture of the Emerson fault reveal evidence of two paleoseismic events, with only one large prehistoric rupture in the past 15 millennia. Accelerator mass spectrometer radiocarbon ages of charcoal from playa sediments and from faultscarp colluvium directly beneath the playa beds indicate that the last large prehistoric slip event occurred about 9000 ka. Tr...

Playas, as the flattest landforms in semiarid and arid regions, are extremely sensitive to climate changes, such changes hydrologic regime of landscape. The these due irrigation, anthropogenic activities, change could be a source disasters. In this study, we explored spatial-temporal Abarkuh Playa Central Iran using time series Sentinel-1 backscatter dataset three scales. Our results showed tha...

Cause of mortality was studied in waterfowl in hypersaline playa lakes of southeast New Mexico during spring and fall migration. Mortality was not common in wild ducks resting on the playas during good weather. However, when birds remained on the lakes for prolonged periods of time, such as during experimental trials and stormy weather, a heavy layer of salt precipitated on their feathers. Sodi...

New Urbanism refers to a form of development that integrates shopping and housing in a pedestrian friendly environment that reduces the need for automobile usage and arguably impacts individual choices regarding commuting and other daily travel. New Urbanism is an increasingly “hot topic” in heavily congested regions, such as Los Angeles, where the wider, often meandering, tree-lined walkways N...

The Remote Sensing Group at the University of Arizona has used ground-based test sites for the vicarious calibration of airborne and satellite-based sensors, of which the Railroad Valley Playa in north central Nevada has played a key role. This work presents a cross comparison of five satellite-based sensors that all imaged this playa on July 16, 2001. These sensors include the Advanced Land Im...

Many sea turtle nesting colonies are in decline worldwide, and a common conservation practice maximizes hatchling production by translocating eggs from threatened nests to protective beach hatcheries. Typically, translocated eggs are ‘doomed’, or at risk of death due to tidal inundation, predation, or poaching. Sea turtles exhibit temperature-dependent sex determination. We determined how prima...