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Abstract
Comparing Two GIS Applications to Develop Relative Landslide Potential
Track: Mining and Geosciences
Author(s): Timothy Parker, Lisa Ohara
This paper presents a comparison of two GIS applications in evaluation of mass wasting and soil erosion in forested terrain in the North Coast Ranges, California. California Division of Mines & Geology (CDMG) is mapping landslide activity over time by completing multiyear aerial photograph review, geologic assessment, field reconnaissance, and data transfer into GIS for development of maps of geologic and geomorphic features related to landslides on a watershed basis. ArcView Spatial Analyst ModelBuilder and ERDAS IMAGINE were utilized to develop a framework of relative landslide potential with consideration of criteria including slope, geomorphologic feature, and geology, and results are contrasted.
Timothy Parker
California Department of Water Resources
901 P Street Second Floor West
PO Box 942836
Sacramento , CA 94236-001
USA
Phone: 916-651-9224
Fax: 916-651-9292
E-mail: tparker@water.ca.gov
Lisa Ohara
California Division of Mines & Geology
1027 10th Street, 4th Floor
Sacramento 95814
USA
Phone: (916) 445-7639
E-mail: tparker@water.ca.gov