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Evaluation of feasibility of mapping seismically active faults in alaska (Document No: 19730011640)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1973 |
| Description | The author has identified the following significant results. The Yukon-Tanana uplands north and east of Fairbanks appear, on ERTS-1 imagery, to be composed of a number of large-scale (approximately 100 kilometers square) crustal blocks. The boundaries of these blocks appear to be defined by a number of northeast-striking lineaments which form the major river valleys of the area. Principal among these are the valleys of the Salcha River, the Cehan River, and the Chatanika River. These lineaments are all seismically active, and are thus presumed to be faults. This parallel set of lineaments appears to be intersected at various angles by a secondary set of faults trending generally north to south. The larger earthquakes in the area occur at the intersections of the two sets. It appears that seismicity of this part of Alaska may be conceptually represented by the grinding together of rigid blocks, with earthquakes occurring along their common boundaries and at the intersections where three or more blocks come in contact. |
| File Size | 230080 |
| Page Count | 5 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730011640 |
| Archival Resource Key | ark:/13960/t0kt1fz71 |
| Language | English |
| Publisher Date | 1973-03-31 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Geological Surveys Geomorphology Earth Resources Program Earth Crust Earthquakes Seismology Topography Alaska Mapping Earth Surface Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
