Science Service System

Summary of Proposal GEO0192

TitleApplication of TerraSARX interferometry to deformation at volcanoes and plate boundary zones
Investigator Lundgren, Paul - Jet Propulsion Laboratory, Division 32
Team Members
Dr. Rosen, Paul - Jet Propulsion Laboratory, Division 33
Lanari, Riccardo - IREA - CNR,
SummaryThe propose to apply TerraSAR-X repeat pass differential interferometry to study surface deformation associated with volcano, earthquake, and other transient fault deformation. Additionally, a secondary objective is to test the applicability of TerraSAR-X in both strip and spotlight modes for resolving surface deformation related to volcanoes and tectonic processes. Toward these goals we have selected a number of sites where the PI has experience with applying ERS and Envisat interferometry to study volcano and tectonic deformation. These include: Italy (Mt. Etna volcano); Kamchatka-Aleutian-Alaska volcanoes; Pacific NW US volcanoes; volcanoes/tectonic deformation in the Central Andes of South America (Peru, Chile) which presents a potentially good X-band environment; and plate boundary and transient fault deformation in California, which includes potentially good urban enviroments as well as potentially bad vegetated locations along the central San Andreas fault, as well as potentially good desert locations along the southern San Andreas fault. To achieve these objectives we will compute SAR interferograms for data in both spotlight (for some volcanoes) and stripmap modes (some other volcanoes as well as tectonic locations). When significant signal is present we will use these deformation maps to constrain models for volcano sources and earthquake/fault slip and crustal deformation. Data requirements: We will request data from both spotlight (SL) mode for single polarization (VV) at a few volcanoes. For StripMap mode data we will request single polarization (VV). Data amounts (assuming both ascending and descending passes at each location): Etna: 21 scenes per track per year, equals 84 data scenes (stripmap mode); Kamchatka: 2 volcanoes in spoltlight mode (Karymsky, Sheveluch) 2 volcanoes in stripmap mode (Klyuchevskoy/Bezymianny, Uzon), 6 data takes per location per year, equals (4x6x2x2) 96 scenes; Alaska: Okmok volcano in spoltlight, Aniakchak or Westdahl in stripmap mode (2x6x2x2) equals 48 data products; Pacific NW US: St Helens and S. Sister volcanoes, stripmap mode, 3 months per year (2x9x2x2) equals 54 data scenes; California: 4 locations (SF, LA, central and southern S. Andreas fault) for 2 years (~30 scenes per year x 4 x 2x2) equals 480 scenes. Peru-Chile 1 stripmap for S. Peru and 1 spoltlight mode for Lascar volcano (Chile) for 2 years equals (2x30x1x2) 120 scenes. Total data request: 880 scenes over two years.

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