Advanced Land Observing Satellite (ALOS) Phased Array Type L-Band Synthetic Aperture Radar (PALSAR) mosaic for the Kahiltna terrane, Alaska, 2007-2010

• DOI: 10.3133/sim3323
• Publication Date: 2015-04-13T20:22:14Z
• Authors: Christopher J. Cole; Michaela R. Johnson; Garth E. Graham
• Keywords: Mosaic; Geological survey

The U.S. Geological Survey (USGS) has initiated a multi-disciplinary study investigating the applicability of remote sensing technologies for geologic mapping and identification prospective areas base precious metal deposits in parts Alaska. Kahiltna terrane southwestern Alaska was selected investigation because its known mineral potential additional resources. An assortment is being investigated to aid analysis terrain, includes imaging spectroscopy (hyperspectral sensing), high spatial resolution electro-optical imagery, Synthetic Aperture Radar (SAR). However, there are significant challenges applying imagery this area low solar angle year, seasonal periods darkness snow cover, frequently cloudy weather that characterizes (SAR) technology does not rely on illumination all-weather capability. USGS compiled continuous, cloud-free 12.5-meter radar mosaic SAR data approximately 212,000 square kilometers examine suitability mapping. This created from Advanced Land Observing Satellite (ALOS) Phased Array type L-band (PALSAR) collected 2007 2010 spanning surrounding area. Interpretation these may help geologists understand past processes identify with near-surface resources further ground-based geological geochemical investigations.