| Abstract: | The November 3, 2002, Mw7.9 Denali Fault earthquake produced about 340 km of surface rupture along the Susitna Glacier Thrust Fault and the right-lateral, strike-slip Denali and Totschunda Faults. Digital photogrammetric methods were primarily used to create a 1:500-scale, three-dimensional surface rupture map, and 1:6,000-scale aerial photographs were used for three-dimensional digitization in ESRI‘s ArcMap GIS software, using Leica‘s StereoAnalyst plug in. Points were digitized 4.3 m apart, on average, for the entire surface rupture. Earthquake-induced landslides, sackungen, and unruptured Holocene fault scarps on the eastern Denali Fault were also digitized where they lay within the limits of air photo coverage. This digital three-dimensional fault-trace map is superior to traditional maps in terms of relative and absolute accuracy, completeness, and detail and is used as a basis for three-dimensional visualization. Field work complements the air photo observations in locations of dense vegetation, on bedrock, or in areas where the surface trace is weakly developed. Seventeen km of the fault trace, which broke through glacier ice, were not digitized in detail due to time constraints, and air photos missed another 10 km of fault rupture through the upper Black Rapids Glacier, so that was not mapped in detail either. |
| Genre: | USGS Numbered Series |
| ProdID: | 97275 |
| Citation Author: | Haeussler, Peter J. |
| Citation Contributing Office: | Western Mineral Resources Team |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | Version 1.0 |
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| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | 0634000 |
| Citation LatS: | 0621500 |
| Citation LonE: | -1420000 |
| Citation LonW: | -1480000 |
| Citation Month: | |
| Citation No Pagination: | N |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | Report: iv, 9 p.; Map: 36 x 19 inches; Google Earth Files; GIS Files |
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| Citation Public Comments: | |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Data Series |
| Citation Series Code: | DS |
| Citation Series Number: | 422 |
| Citation Search Results Text: | Surface Rupture Map of the 2002 M7.9 Denali Fault Earthquake, Alaska: Digital Data; 2009; DS; 422; Haeussler, Peter J. |
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| Citation Volume: | |
| Citation Year: | 2009 |
| Type: | citation/reference |
| Text: | Surface Rupture Map of the 2002 M7.9 Denali Fault Earthquake, Alaska: Digital Data; 2009; DS; 422; Haeussler, Peter J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/ds/422/ |
| Date Other: | Wed, 11 Feb 2009 00:00 -0600 |
| Publisher: | U.S. Geological Survey |
