HR: 1400h
AN: G43A-01    [Abstracts]
TI: A study of risk in the metropolitan area of Guadalajara through dense GPS geodesy
AU: * Marquez-Azua, B
EM: bmarquez@cencar.udg.mx
AF: Laboratorio de Nuevas Tecnologias, Universidad de Guadalajara Departamento de Geografia y Ordenacion Territorial Av. De los Maestros y Mariano Barcena Puerta No. 3 Planta Alta, Guadalajara, JAL 44260, Mexico
AU: Saldana-Hernandez, F
AF: Instituto de Informacion Territorial del Estado de Jalisco, Av. Pirules No. 71 Col. Ciudad Granja, Zapopan, JAL 45010, Mexico
AU: Medina de La Pena, H
AF: Laboratorio de Nuevas Tecnologias, Universidad de Guadalajara Departamento de Geografia y Ordenacion Territorial Av. De los Maestros y Mariano Barcena Puerta No. 3 Planta Alta, Guadalajara, JAL 44260, Mexico
AB: Geodesic measurements from the Global Positioning System (GPS) are used extensively for basic earth science research into natural hazards and seismic risk. In the private sector, GPS technology is additionally used for cadastral and photogrammetric mapping surveys, definition of political-administrative limits, space analysis with thematic cartography, GIS, and land-use planning, with a wide variety of applied social, economic, and political purposes, including conservation of the environment. The city of Guadalajara and its surrounding urban area has expanded greatly in the last three decades as a result of industrial, commercial and housing activity that have substantially changed in their urban morphology. This period of unprecedented growth has occurred primarily in an unplanned and sometimes disarticulated and unbalanced manner, incongruous with the development of the most important city in western Mexico. The Department of Geography of the University of Guadalajara and the Institute of Territorial Information of the State of Jalisco (IITJ) have initiated a study of 89 geodetic sites that are located in the metropolitan zone of Guadalajara to assist in future planning and regulation of urban development, including urban and rural cadastral surveys and the establishment of diverse public services. Our work includes careful examination and evaluation of the quality and distribution of these geodetic sites with regard to anticipated growth of the metropolitan municipalities, and the vulnerability of urban zones to ground subsidence or landslides. Guadalajara is also located in a seismic zone, making precise continuous GPS measurements useful for identifying rates of strain accumulation and aseismic strain events that cannot be measured by seismographs.
DE: 1204 Control surveys
DE: 1209 Tectonic deformation (6924)
DE: 1243 Space geodetic surveys
SC: Geodesy [G]
MN: 2007 Joint Assembly