Spectral Unmixing Applied to Desert Soils for the - Naval ...
Spectral Unmixing Applied to Desert Soils for the - Naval ... Spectral Unmixing Applied to Desert Soils for the - Naval ...
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ABSTRACT Desert areas cover approximately one-fifth of the Earth, making it important to understand how disturbance affects arid regions on a spectral level. Remote sensing technology can be used to detect and characterize surface disturbance both literally (visually) and non-literally (analytically). Non-literal approaches may even allow detection of anthropogenic-related surface disturbances that are not visible in individual images or color composites. This is achievable through identification of differences in spectral reflectance among like soil components, both chemical and biological. Previous research suggests that surface disturbances cause alteration of soil properties, making it feasible to detect variation in reflectance signatures. This research supports that assumption and has determined that disturbance-related changes do have unique spectral characteristics in hyperspectral imagery that are detectable, even at the sub-pixel level and using endmembers from geographically different yet geologically similar regions. v
- Page 1 and 2: NAVAL POSTGRADUATE SCHOOL MONTEREY,
- Page 3 and 4: REPORT DOCUMENTATION PAGE Form Appr
- Page 5: Approved for public release; distri
- Page 9 and 10: TABLE OF CONTENTS I. INTRODUCTION..
- Page 11 and 12: LIST OF FIGURES Figure 1. The above
- Page 13 and 14: spectrum by atmospheric effects. Re
- Page 15 and 16: emoved function showing an absorpti
- Page 17 and 18: LIST OF TABLES Table 1. This table
- Page 19 and 20: LIST OF ACRONYMS AND ABBREVIATIONS
- Page 21 and 22: I. INTRODUCTION A study published b
- Page 23 and 24: II. THE PHYSICS BEHIND REMOTE SENSI
- Page 25 and 26: sensitive a given sensor is to diff
- Page 27 and 28: Figure 3. From Green et al. (1998),
- Page 29 and 30: analyzing imagery spectra, it is mo
- Page 31 and 32: After data have been converted to r
- Page 33 and 34: Collins et al. (1997) was able to s
- Page 35 and 36: These purposes include, but are not
- Page 37 and 38: III. DESERT ECOSYSTEM CHARACTERISTI
- Page 39 and 40: sagebrush of Utah, Montana, and the
- Page 41 and 42: in desert regions include argids, o
- Page 43 and 44: 2. Biological Soil Crusts (BSCs) Bi
- Page 45 and 46: 2004), especially in cases where ma
- Page 47 and 48: IV. STUDY SITES The focus area of t
- Page 50 and 51: Figure 13. This figure illustrates
- Page 52 and 53: Following the uplift that occurred
- Page 54 and 55: the Mazourka Canyon OHV park betwee
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