HR: 0830h
AN: V51F-0338    [PDF]
TI: Landsat TM and ETM+ Time Sequence of Lahar Hazards on Fuego Volcano, Guatemala
AU: * Reif, S L
EM: slreif@mtu.edu
AF: Michigan Technological University, Dept. Geological and Mining Eng and Sci 1400 Townsend Drive, Houghton, MI 49931 United States
AU: Bluth, G J
EM: gbluth@mtu.edu
AF: Michigan Technological University, Dept. Geological and Mining Eng and Sci 1400 Townsend Drive, Houghton, MI 49931 United States
AU: Rose, W I
EM: raman@mtu.edu
AF: Michigan Technological University, Dept. Geological and Mining Eng and Sci 1400 Townsend Drive, Houghton, MI 49931 United States
AU: Matias, O
EM: insivumeh@insivumeh.gob.gt
AF: INSIVUMEH, 7a Avenida 14-57 Zona 13, Guatemala, 01013 Guatemala
AB: Volcanic hazards pose a threat to a large number of the world's population, especially secondary hazards due to remobilization of volcanic material such as landslides and lahars. Many hazard-prone areas would benefit by remote sensing tools for hazard mitigation. In this study, we propose to use remote sensing and GIS techniques to map these hazard prone areas around Fuego volcano, Guatemala and provide information to local organizations to assist in mitigation. Fuego is a steep sided volcano with a history of large eruptive events, including the well-studied 1974 eruption, that have extruded a large amount of material onto the upper reaches of its watersheds. The volcano is well studied, but historically more emphasis has been placed on eruption processes. A study of the way material moves down Fuego and to the extent that it moves is needed to help mitigate the range of potential hazards. We propose an in-depth remote sensing survey to map the hazard-prone areas. The study will consist of processing 20 years (15 cloud-free images) of Landsat TM and ETM+ data to look at changes in landforms and vegetation. Vegetation indices will be calculated to locate areas devoid of vegetation and a masking process will be used These area changes will be related to field measurements to create GIS to measure the area of these zones. layers denoting geometry changes in the channels around Fuego. These changes will be loaded into a GIS, along with regional climate data, DEMs, hydrologic data, infrastructure, and information about the known volcanic activity recorded in the area by the local volcanologists. Modeling of lahars using LAHARZ and climate data will also be done to determine an estimate of the amount of material moved and to what distances it can be transported. A field survey undertaken in January 2003 acquired GPS ground truth data of landslide boundaries and channel volumes for the GIS. The deposits that were seen in the channels 10 km from the source of the sediment ranged in thickness from 1.5-8 m.
DE: 1625 Geomorphology and weathering (1824, 1886)
DE: 1640 Remote sensing
DE: 5415 Erosion and weathering
SC: Volcanology, Geochemistry, Petrology [V]
MN: 2003 Fall Meeting