| タイトル | The Cause of the Hot Spot in Vegetation Canopies and Soils: Shadow-Hiding Versus Coherent Backscatter |
| 本文（外部サイト） | http://hdl.handle.net/2060/19970021464 |
| 著者（英） | Nelson, Robert; Smythe, William; DiMucci, Dominick; Hapke, Bruce |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 1996-01-01
1996 |
| 言語 | eng |
| 内容記述 | Two different mechanisms, shadow-hiding and coherent backscatter, can cause a hot spot, or opposition effect, in the bidirectional reflectance of vegetation and soils. Because the two mechanisms sample different properties, it is important to know which one is primarily responsible in a given medium. This question can be answered by measuring the bidirectional reflectance in circularly polarized light. If the results of the limited experiments reported here can be extrapolated to a wider range of materials, it appears that the primary cause of the hot spot in most vegetation canopies and in moist, clumpy soils is shadow-hiding. However, in vegetation with large numbers of wavelength-sized structures, such as mosses, and in dry, fine-grained soils, the hot spot is dominated by coherent backscatter. |
| NASA分類 | Earth Resources and Remote Sensing |
| レポートNO | 97N22435
NASA-CR-204546
NAS 1.26:204546 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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