The files: 41170 seg01-2.jpg 41654 seg01-small.gif 261653 seg01.jpg 15418 sir_map.gif (overview including other passes in the Middle East) Have been derived from data at: http://sun1.cr.usgs.gov/landdaac/sir-c/sir-c.html NASA SIR-C Survey Images SIR-C/X-SAR (Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar) is a joint project of the National Aeronautics and Space Administration (NASA), the German Space Agency (DARA) and the Italian Space Agency (ASI). An imaging radar system launched aboard the NASA Space Shuttle twice in 1994, SIR-C/X- SAR's unique contributions to Earth observation and monitoring are its capability to measure, from space, the radar signature of the surface at three different wavelengths and make measurements for different polarizations at two of those wavelengths. SIR-C image data will help scientists understand the physics behind some of the phenomena seen in radar images at just one wavelength/polarization, such as those produced by SeaSAT. Investigators on the SIR-C/X-SAR Science team will use the radar image data to make measurements of: Vegetation type, extent and deforestation; Soil moisture content; Ocean dynamics, wave and surface wind speeds and directions; Volcanism and tectonic activity; Soil erosion and desertification. More information is available in the user guide, the NASA/JPL Imaging Radar Home Page, and the SIR-C Frequently Asked Questions. (see the NASA WWW site http://www.nasa.gov) SIR-C Survey products are available from the EDC DAAC via anonymous FTP using the DAAC Data Distribution System (DDS). Data from a single data take may be selected by site name, date, or geographic location: · Select Data from a Coverage Map · Select Data by Site Name · Select Data by Date Note : This is a prototype system. Limited amounts of data from the first SIR- C mission are currently available. [More data may be added later.] SIR-C Data Saudi Arabia C (2) 1 A data take is a single continuous swath of data. Each data take survey strip image is divided into 100 km image segments numbered starting from 01. When displayed, each image segment is oriented such that the near range pixels are at the top of the image. For right-looking images, the spacecraft flight direction is from left to right. For left-looking images, the spacecraft flight direction is from right to left. The look direction and each image segment corner points are located in the DTHDR.TXT file. Barre Ludvigsen