Interferometría de RADAR (INSAR) y su aplicación a la sismotectónica

  1. Manuel Tordesillas García-Lillo 2
  2. Marina López Muga 2
  3. Emilio Carreño Herrero 2
  4. Carmen López Moreno 2
  5. José Jesús Martínez Díaz 1
  6. Ramón Capote del Villar 1
  7. Laura Castro Moreni 1
  8. Meaza Tsige Aga 1
  1. 1 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

  2. 2 Dirección General del Instituto Geográfico Nacional

Publisher: Dirección General del Instituto Geográfico Nacional

Year of publication: 2003

Type: Book

GOOGLE SCHOLAR

Abstract

The identification of surface deformations associated with an earthquake is now possible through the interferometry RADAR (INSAR) technique. This technique presents a great advantage in relation .to other more accurate geodesic techniques, like GPS, because each one of the pixels that constitutes an interferometric image is a geodetic datum, with an accuracy lower than a semiwavelength of the emited radiation (28 mm for the ERS satellites). The area covered by an interferogram (up to 100 by 100 km) makes it possible to cuantify with great accuracy, and in a regional scale, the deformations field induced by a seismic event. The combination of the results obtained by this technique with seismological and geological surface data, allows us to discem to a high leve! of accuracythe nature of the seismic source. In this publication the basic notions of the RADAR systems are described, paying special attention to the sintetic aperture RADAR (SAR). The interferometric technique with SAR and the interferogram generation and interpretation are also explained. Finally, sorne examples of use are shown along with a complet application to the Spanish case of the Mula's earthquake, which took place on the 2nd of february 1999 with a magnitud mB = 4.8.