Frank Urban
Frank Urban is a Geologist with the Geosciences and Environmental Change Science Center.
Science and Products
Filter Total Items: 21
Sediment losses and gains across a gradient of livestock grazing and plant invasion in a cool, semi-arid grassland, Colorado Plateau, USA Sediment losses and gains across a gradient of livestock grazing and plant invasion in a cool, semi-arid grassland, Colorado Plateau, USA
Large sediment fluxes can have significant impacts on ecosystems. We measured incoming and outgoing sediment across a gradient of soil disturbance (livestock grazing, plowing) and annual plant invasion for 9 years. Our sites included two currently ungrazed sites: one never grazed by livestock and dominated by perennial grasses/well-developed biocrusts and one not grazed since 1974 and...
Authors
Jayne Belnap, Richard L. Reynolds, Marith C. Reheis, Susan L. Phillips, Frank Urban, Harland L. Goldstein
Fire behavior, weather, and burn severity of the 2007 anaktuvuk river tundra fire, North Slope, Alaska Fire behavior, weather, and burn severity of the 2007 anaktuvuk river tundra fire, North Slope, Alaska
In 2007, the Anaktuvuk River Fire (ARF) became the largest recorded tundra fire on the North Slope of Alaska. The ARF burned for nearly three months, consuming more than 100,000 ha. At its peak in early September, the ARF burned at a rate of 7000 ha d-1. The conditions potentially responsible for this large tundra fire include modeled record high summer temperature and record low summer
Authors
Benjamin M. Jones, Crystal A. Kolden, Randi Jandt, John T. Abatzoglou, Frank Urban, Christopher D. Arp
Erosional history of Cape Halkett and contemporary monitoring of bluff retreat, Beaufort Sea coast, Alaska Erosional history of Cape Halkett and contemporary monitoring of bluff retreat, Beaufort Sea coast, Alaska
Cape Halkett is located along the Beaufort Sea at the end of a low-lying tundra landscape. The area has been subject to major modifications over the last century as a result of erosion and migration of the coastline inland. Long-term mean annual erosion rates (1955-2009) for the entire cape are 7.6 m/yr, with a gradual increase in rates over the first five time periods of remotely sensed...
Authors
Benjamin M. Jones, Christopher D. Arp, Richard A. Beck, Guido Grosse, James M. Webster, Frank E. Urban
Science and Products
Filter Total Items: 21
Sediment losses and gains across a gradient of livestock grazing and plant invasion in a cool, semi-arid grassland, Colorado Plateau, USA Sediment losses and gains across a gradient of livestock grazing and plant invasion in a cool, semi-arid grassland, Colorado Plateau, USA
Large sediment fluxes can have significant impacts on ecosystems. We measured incoming and outgoing sediment across a gradient of soil disturbance (livestock grazing, plowing) and annual plant invasion for 9 years. Our sites included two currently ungrazed sites: one never grazed by livestock and dominated by perennial grasses/well-developed biocrusts and one not grazed since 1974 and...
Authors
Jayne Belnap, Richard L. Reynolds, Marith C. Reheis, Susan L. Phillips, Frank Urban, Harland L. Goldstein
Fire behavior, weather, and burn severity of the 2007 anaktuvuk river tundra fire, North Slope, Alaska Fire behavior, weather, and burn severity of the 2007 anaktuvuk river tundra fire, North Slope, Alaska
In 2007, the Anaktuvuk River Fire (ARF) became the largest recorded tundra fire on the North Slope of Alaska. The ARF burned for nearly three months, consuming more than 100,000 ha. At its peak in early September, the ARF burned at a rate of 7000 ha d-1. The conditions potentially responsible for this large tundra fire include modeled record high summer temperature and record low summer
Authors
Benjamin M. Jones, Crystal A. Kolden, Randi Jandt, John T. Abatzoglou, Frank Urban, Christopher D. Arp
Erosional history of Cape Halkett and contemporary monitoring of bluff retreat, Beaufort Sea coast, Alaska Erosional history of Cape Halkett and contemporary monitoring of bluff retreat, Beaufort Sea coast, Alaska
Cape Halkett is located along the Beaufort Sea at the end of a low-lying tundra landscape. The area has been subject to major modifications over the last century as a result of erosion and migration of the coastline inland. Long-term mean annual erosion rates (1955-2009) for the entire cape are 7.6 m/yr, with a gradual increase in rates over the first five time periods of remotely sensed...
Authors
Benjamin M. Jones, Christopher D. Arp, Richard A. Beck, Guido Grosse, James M. Webster, Frank E. Urban