Knowledge Resource Center for Ecological Environment in Arid Area
| 报告编号 | E76-10345, NASA-CR-147237 |
| 来源ID | NTRS_Document_ID: 19760017577 |
| Application LANDSAT imagery to geologic mapping in the ice-free valleys of Antarctica | |
| Marrs, R. W.; Smithson, S. B. | |
| 英文摘要 | The author has identified the following significant results. Studies in the Ice-Free Valleys are resulted in the compilation of a sizeable library of maps and publications. Rock reflectance measurements were taken during the Antarctic summer of 1973. Spectral reflectance of rocks (mostly mafic lava flows) in the McMurdo and Ice-Free Valleys areas were measured using a filter wheel photometer equipped to measure reflectances in the four Landsat bands. A series of samples were collected at regular intervals across a large differentiated, mafic sill near Lake Vida. Chemical analyses of the sample suggest that the tonal variations in this sill are controlled by changes in the iron content of the rock. False color images were prepared for a number of areas by the diazo method and with an optical multispectral biviewer. These images were useful in defining boundaries of sea ice, snow cover, and in the study of ablating glaciers, but were not very useful for rock discrimination. |
| 英文关键词 | ANTARCTIC REGIONS GEOLOGY GLACIERS ROCKS SEA ICE SNOW VALLEYS EARTH RESOURCES PROGRAM MAPPING PHOTOMETERS REFLECTANCE |
| 出版年 | 1976 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| URL | http://hdl.handle.net/2060/19760017577 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/258647 |
| 推荐引用方式 GB/T 7714 | Marrs, R. W.,Smithson, S. B.. Application LANDSAT imagery to geologic mapping in the ice-free valleys of Antarctica,1976. |
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