Spectral Unmixing Applied to Desert Soils for the - Naval ...

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Following the uplift that occurred during the Paleozoic, the Mesozoic Era (240–65 mya) resulted in the recession of ocean waters, during this time volcanism and volcanically generated sedimentation from the Inyo Mountains Volcanic Complex began covering the newly dried land (Dunne and Walker 1993; Dunne et al., 1998; Stone et al., 2009). The most recent activity in the formation of the Inyo Mountains has been uplift related to basaltic volcanic activity associated with Basin and Range extension throughout the Cenozoic (65 mya-present) (Snow and Wernicke, 2000; Stone et al., 2009). B A C Figure 15. A shows the key for the Mono basin and Owens/Death Valley collection areas, B shows the Mono Lake area, and C shows the Independence/Mazourka Canyon area. Knowing the geology of an area is helpful in predicting what kind of soils will be present, allowing for predictability in disturbance related changes of properties (FromTallyn, 1996). 32
A. DATA V. DATA AND METHODS Airborne imagery data were collected by the Airborne visible/Infrared Imaging Spectrometer (AVIRIS) system for the Canyonlands National Park area in Utah during 2011. AVIRIS utilizes a whisk-broom imaging method collecting high resolution spectra over the 0.4–2.5 micrometer (400–2500 nm) wavelength range (Green et al., 1998). Through the employment of 224 contiguous spectral channels set at 10 nm intervals over the breadth of the spectrum, AVIRIS is able to measure detailed upwelling radiance of surface materials. These measurements can then be used for determination of material composition based on the physics and chemistry of those materials. A more detailed account of this process can be read in the paper by Green et al., (1998) and Roberts and Herold, (2004) (Green et al., 1998; Roberts and Herold, 2004). AVIRIS imagery flight lines analyzed are of areas around Canyonlands National Park (Figure 12). The AVIRIS data used for this study were obtained from the JPL website (aviris.jpl.nasa.gov/alt_locator/) for multiple flight lines in the Canyonlands National Park area in Utah and Arizona on the Colorado Plateau. The flight ID numbers for the flights used were f110512t01p00r07, f110512t01p00r08, f110609t01p00r13, f110615t01p00r05, f110623t01p00r10, f111110t01p00r08, and f111110t01p00r09. These flight lines were flown on 05/12, 05/12, 06/09, 06/15, 06/23, 11/10, and 11/10 of 2011, respectively. The data sets came as zipped archive files and were extracted then loaded into the Environment for Visualizing Images (ENVI) software for analysis. AVIRIS images were examined for quality and usefulness (e.g. clarity, cloud cover, bad data, etc.). Imaging spectrometer data collected in the Mono Basin and the Owens/Death Valley areas were also used for this study. The main areas of collection were the Panum Crater and surrounding vicinity in Mono Basin at approximately 37 0 55.537’ N, 119 0 02.923’ W, part of the Lee Vining quadrangle in the California 7.5 minute topographic quadrangle (Sharp and Glazner, 1997). The Owens/Death Valley collection took place in 33
Page 1 and 2: NAVAL POSTGRADUATE SCHOOL MONTEREY,
Page 3 and 4: REPORT DOCUMENTATION PAGE Form Appr
Page 5 and 6: Approved for public release; distri
Page 7 and 8: ABSTRACT Desert areas cover approxi
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 54 and 55: the Mazourka Canyon OHV park betwee
Page 56 and 57: wavelengths being analyzed to obtai
Page 58 and 59: 2. Field Spectroscopy An Analytical
Page 60 and 61: A spectral library was then built a
Page 62 and 63: after atmospherically correcting th
Page 64 and 65: where: is the mean corrected and no
Page 66 and 67: also be seen in Figure 23. The leve
Page 68 and 69: Figure 24. This figure is a compari
Page 70 and 71: Figure 25. This figure shows ASD co
Page 72 and 73: Looking at Figure 25 it is apparent
Page 74 and 75: A. IMAGERY DERIVED ENDMEMBERS The i
Page 76 and 77: Figure 28. The above shows some of
Page 78 and 79: spectrometer, reflectance values we
Page 80 and 81: such an inference can be made (Ben-
Page 82 and 83: While this is lower than the hoped
Page 84 and 85: While the lower value would initial
Page 86 and 87: Figure 33. This figure shows the ad
Page 88 and 89: Inset C of Figure 35 is the same da
Page 90 and 91: However, the presences of BSCs are
Page 92 and 93: A B C Figure 37. Inset A shows the
Page 94 and 95: A B C Figure 38. Inset A shows a co
Page 96 and 97: differences in the studies by other
Page 98 and 99: small concentrations making them un
Page 100 and 101: area making it possible to tell wha
Page 102 and 103:
Clark, R. N., Swayze, G. A., Livo,
Page 104 and 105:
Kruse, F. A., Boardman, J. W., and
Page 106 and 107:
Sharp, R. P., and Glazner, A. F., (
Page 108:
INITIAL DISTRIBUTION LIST 1. Defens
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