Wildfires are a major concern in Argentinian northwestern Patagonia and in many ecosystems and human societies around the world. We developed an efficient cellular automata model in Graphic Processing Units (GPUs) to simulate fire propagation. The graphical advantages of GPUs were exploited by overlapping wind direction, as well as vegetation, slope, and aspect maps, taking into account relevan...

Conditions for the Pleistocene glaciation in the regions of Černé Jezero and Čertovo Jezero lakes in the Šumava Mts. are analyzed in this paper, with a comparison of the resulting glacial landforms. Although the two cirques are immediate neighbours, have approximately the same area, altitude and relative vertical relief-dissection, their glacial erosion and accumulation relief segments exhibit ...

Analysis of Thermal Infrared Multispectral Scanner data collected over H. J. Andrews experimental forest in western Oregon indicated that aspect and slope gradient had a greater effect on the thermal emission of younger reforested clearcuts than of older stands. Older forest stands ( > 25 years) with greater amounts of green biomass and dosed canopies had lower effective radiant temperatures th...

Rangeland vegetation in the Great Basin, United States, is frequently disturbed by natural- and human-caused wildfires that facilitate establishment dominance of introduced annual weeds such as cheatgrass (Bromus tectorum) medusahead wildrye (Taeniatherum caput-medusae [L.] Nevski). Ecological resilience resistance native seeded-non-native plant communities this region, however, appear to follo...

Theaddition of glide slope control to guided airdrop systemshas the potential to provide dramatic improvements in landing accuracy. Dynamic rigging incidence control has been demonstrated in flight tests and shown to provide effective glide slope control. The current work presents flight-test results exploring the range of glide slope control that can be achieved with high-performance parafoil ...

[1] In the current empirical study, we provide evidence about how the hydrologic responses of small mountain catchments are related to aspect (slope direction and exposure) at Redondo Peak, located in the Valles Caldera, New Mexico, United States. Specifically, we test the hypothesis that the transit time of water is related to the catchment aspect. Aspect is an easily measurable and transferab...