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  • GIS
  • Instituto Oceanográfico de la Armada, Guayaquil, Ecuador  (1)
  • Wiley  (1)
  • Wiley Inter Science  (1)
  • Essen : Verl. Glückauf
  • Institute of Physics
  • Krefeld : Geologischer Dienst Nordhein-Westfalen
  • Taylor & Francis
  • 2005-2009  (3)
Collection
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Years
Year
  • 1
    Publication Date: 2017-04-04
    Description: The velocity and dynamic pressure of debris flows are critical determinants of the impact of these natural phenomena on infrastructure. Therefore, the prediction of these parameters is critical for hazard assessment and vulnerability analysis. We present here an approach to predict the velocity of debris flows on the basis of the energy line concept. First, we obtained empirically and field-based estimates of debris flow peak discharge, mean velocity at peak discharge and velocity, at channel bends and within the fans of ten of the debris flow events that occurred in May 1998 in the area of Sarno, Southern Italy. We used this data to calibrate regression models that enable the prediction of velocity as a function of the vertical distance between the energy line and the surface. Despite the complexity in morphology and behaviour of these flows, the statistical fits were good and the debris flow velocities can be predicted with an associated uncertainty of less than 30% and less than 3 m s-1. We wrote code in Visual Basic for Applications (VBA) that runs within ArcGIS® to implement the results of these calibrations and enable the automatic production of velocity and dynamic pressure maps. The collected data and resulting empirical models constitute a realistic basis for more complex numerical modelling. In addition, the GIS implementation constitutes a useful decision-support tool for real-time hazard mitigation. Copyright © 2008 John Wiley & Sons, Ltd.
    Description: Published
    Description: 1693-1708
    Description: 4.3. TTC - Scenari di pericolosità vulcanica
    Description: 4.4. Scenari e mitigazione del rischio ambientale
    Description: JCR Journal
    Description: reserved
    Keywords: debris flows ; mobility ; velocity ; GIS ; hazard assessment ; 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
    Publication Date: 2021-05-19
    Description: Para la generación de mapas digitales de inundación es necesario tener presente los conceptos de cartografía y modelación numérica de tsunamis, usando como nexo a los Sistemas de Información Geográfica (SIG). La utilización SIG no es nuevo en el modelamiento de tsunamis, sin embargo el uso general de esta técnica en países como el Ecuador es reciente. Por esta razón, como contribución a la determinación del riesgo por tsunamis, se presenta esta metodología para elaborar cartas digitales de inundación basada en la unión de las técnicas SIG y el Proyecto TIME (Intercambio de mapas de inundación por Tsunamis). Los aspectos cartográficos considerados en la preparación de estos mapas son: la línea de costa de alta resolución y el uso de un mismo sistema de coordenadas geográficas y sistema de referencia vertical, tanto en la batimetría como en la topografía. La información cartográfica representada como capas en el SIG fue asociada con la inundación del tsunami sintético basado en el tsunami histórico de 1953. De manera general, esta metodología es más eficiente en cuanto permite predecir los efectos de la inundación por tsunamis.
    Description: For generation of flooding digital maps is necessary consider the geographic concepts and Tsunami numerical modeling concepts, using how link the Geographical Information Systems (GIS). The use of GIS is not new for tsunami modeling: however in countries like Ecuador the global use of this technique is recent. For this reason, a new methodology based on the joint use of GIS and TIME (Tsunami Inundation Maps Exchange) Project for the preparation of tsunami flooding digital maps is presented as a contribution for tsunami risk assessment. The cartographic aspects considered for the preparation of these maps are: a high resolution coastline, and the use of bathymetric and topography data with the same vertical reference level and geographical coordinates system. This information, represented as a layer in GIS, was integrated to other relevant scientific information from tsunami modelling associated to the 1953. In a general way, this new methodology probed to be more effective in predicting tsunami related flooding effects.
    Description: Incluye ref.bibl., ilus., tbls.
    Description: Published
    Keywords: Mathematical models ; Tsunamis ; GIS ; Floods ; Maps ; Mathematical models
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 3
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    Wiley
    In:  Chichester, 2nd ed., xvii + 517 pp., Wiley, vol. 5, no. 22, pp. 662-664, (ISBN 0-470-87000-1 (HB), ISBN 0-470-87001-X (PB))
    Publication Date: 2005
    Keywords: GIS ; Textbook of informatics ; Textbook of geography ; geography ; management ; policy
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