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Lineament mapping with orbiting imaging radar

M. Daily and H. E. Stewart
Lineament mapping with orbiting imaging radar
AAPG Bulletin (May 1979) 63 (5): 825


The Seasat A Synthetic Aperture Radar (SAR) was designed primarily for oceanographic and polar studies. During its 150-day mission before equipment failure, the SAR imaged substantial areas of North America as well as parts of northern Africa, Europe, Central America, and South America. The Seasat SAR differs from most commercial SLAR systems in that it has long wavelength (lambda = 25 cm) and a steep incidence angle ( approximately 20 degrees ). These factors make the system more sensitive to differences in surface materials. In the Peninsula Ranges of southern California, some previously unmapped lineaments were seen on radar images but not on Landsat. Field work has revealed faults of unknown displacement. Similar findings in the Appalachians have been reported. Near Medicine Lake and Mount Shasta in northern California, scarps only a few meter high are detectable. In that these small scarps have eroded to near the angle of repose and are parallel with the flight path, the energy return is particularly strong. In the course of this work we have developed a classification system for radar lineaments that includes physical models and predictions of effects of changing viewing geometry. Any attempt to analyze lineaments in smooth sedimentary basins should involve at least two viewing directions to minimize bias.

ISSN: 0149-1423
EISSN: 1558-9153
Serial Title: AAPG Bulletin
Serial Volume: 63
Serial Issue: 5
Title: Lineament mapping with orbiting imaging radar
Affiliation: Jet Propul. Lab., Pasadena, Calif., United States
Pages: 825
Published: 197905
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
Meeting name: AAPG-SEPM-EMD Rocky Mountain sections, 28th annual meeting
Meeting location: Casper, Wyo., USA, United States
Meeting date: 19790603June 3-6, 1979
Summary: Y
Accession Number: 1979-033171
Categories: Structural geology
Document Type: Serial Conference document
Bibliographic Level: Analytic
N33°00'00" - N47°30'00", W87°00'00" - W67°00'00"
N32°30'00" - N42°00'00", W124°30'00" - W114°15'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1979
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