Showing papers by "William I. Rose published in 2005"
TL;DR: In this paper, the authors compared two-band thermal infrared (10-12 μm) remote sensing from MODIS, AVHRR, and GOES 10 for the detection of volcanic ash.
Abstract: [1] The February 2001 eruption of Cleveland Volcano, Alaska allowed for comparisons of volcanic ash detection using two-band thermal infrared (10–12 μm) remote sensing from MODIS, AVHRR, and GOES 10. Results show that high latitude GOES volcanic cloud sensing the range of about 50 to 65°N is significantly enhanced. For the Cleveland volcanic clouds the MODIS and AVHRR data have zenith angles 6–65 degrees and the GOES has zenith angles that are around 70 degrees. The enhancements are explained by distortion in the satellite view of the cloud's lateral extent because the satellite zenith angles result in a “side-looking” aspect and longer path lengths through the volcanic cloud. The shape of the cloud with respect to the GOES look angle also influences the results. The MODIS and AVHRR data give consistent retrievals of the ash cloud evolution over time and are good corrections for the GOES data.
39 citations
TL;DR: A unique, new educational program that focuses on geological natural hazards, U.S. Peace Corps field work, and on-campus study has begun its second year at Michigan Technological University, in Houghton, Michigan as mentioned in this paper.
Abstract: A unique, new educational program that focuses on geological natural hazards, U.S. Peace Corps field work, and on-campus study has begun its second year at Michigan Technological University, in Houghton, Michigan.
While “Masters International” programs that combine Peace Corps service with a graduate degree program are available at 49 different universities in a variety of fields, the program at Michigan Tech is the only one with a natural hazards focus offering geological degree programs.
01 Dec 2005
TL;DR: In the case of pure water, the density and pressure of the saturated vapour over either a liquid or solid phase depends on temperature, and these variables can be calculated at a specific temperature with respect to vapour, liquid and ice phases.
Abstract: In the atmosphere, water freezes by heterogeneous ice nucleation at temperatures between -3 °C to -40°C, or by homogeneous ice nucleation at <-40°C. Saturation describes a state of dynamic equilibrium between different phases of a substance. In the case of pure water, the density and pressure of the saturated vapour over either a liquid or solid phase depends on temperature. These variables can be calculated at a specific temperature with respect to vapour, liquid and ice phases.