Laboratory upwelled radiance and reflectance spectra of Kerr Reservoir sediment waters

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National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] , Washington, D.C, [Springfield, Va
Marine sediments -- Remote sen
StatementWilliam G. Witte ... [et al.].
SeriesNASA technical paper -- 1993.
ContributionsWitte, William G., United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., Langley Research Center.
The Physical Object
Paginationii, 19 p. :
ID Numbers
Open LibraryOL17654230M

Laboratory upwelled radiance and reflectance spectra of Kerr Reservoir sediment waters. Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va.

The two sets of radiance and reflectance spectra obtained were similar in shape and magnitude for comparable values of TSS.

Upwelled reflectance was observed to be a nonlinear function of TSS with the degree of curvature a function of wavelength. Laboratory upwelled radiance and reflectance spectra of Kerr Reservoir sediment waters / By William G.

Witte, United States. National Aeronautics and Space Administration.

Details Laboratory upwelled radiance and reflectance spectra of Kerr Reservoir sediment waters EPUB

Scientific and Technical Information Branch. and Langley Research Center. Abstract. Subject Category "March "--Cover."Langley Research Center."Includes bibliographical. radiance and reflectance spectra obtained were similar in shape and magnitude for comparable values of TSS.

Upwelled reflectance was observed to be a nonlinear function of TSS with the degree of curvature a function of wavelength. Sediment from. This paper describes the laboratory arrangement and presents radiance reflectance spectra in the visible and near-infrared ranges for concentrations ranging from to ppm of secondary-treated sewage sludge mixed with two types of base water.

Laboratory upwelled radiance and reflectance spectra of Kerr reservoir sediment waters. water on reflectance spectra, laboratory tests were conducted with various concentrations of sewage.

Linking remotely sensed radiance measure- ments of the water-leaving radiance to ground or laboratory measurements of reflectance from water-sediment mixtures based on theoretical calculations of reflectance from simple radiative transfer models has been successfully attempted in a few studies including Stumpf and Pennock (), Vertucci and Likens (), Sydor (), and Cited by: a 25˚ field-of-view simultaneously measured the upwelling radiance of water (L(λ)u) from just below the wa- ter’s surface.

The upwelling fiber was pointed 15 - 20˚˚ from nadir in the direction of 90˚ away from the sun to minimize sun glint and sky radiance. Each reflectance spectra was an average of 8 - 15 scans, and six separateFile Size: KB. measured the upwelling radiance of water (L w) from just below the water’s surface.

The upwelling fiber was pointed ° from nadir in the direction of 90° away from the sun to minimize sun glint and sky radiance. Each Laboratory upwelled radiance and reflectance spectra of Kerr Reservoir sediment waters book spectra was an averageof scans, and six se parate spectra.

spectra. It is possible to differentiate between coastal waters with different total suspended solid (TSS) and chlorophyll-a (Chl-a) loadings using the reflectance spectra. During the two-year campaign, spectral reflectance signatures of seven classes of algal blooms have been.

Laboratory reflectance spectra in the –μm region of bound water, water‐mineral mixtures, mineral grains on frost, and frost on minerals are presented. The materials used in this study are montmorillonite, kaolinite, beryl, Mauna Kea red cinder, and black charcoal.

It is found that the wavelengths of bound water and bound OH Cited by:   Furthermore, the dips of reflectance that occur inand µm wavelengths are induced by water absorption from the leaves and this areas are called water absorption bands.

The NIR region is also useful in identifying different plant species and to monitor the conditions of vegetation. The effects of dissolved organic materials on turbid-water optical properties are assessed, by means of field measurements and laboratory simulations in which upwelled reflectance, attenuation.

diffuse reflectance spectroscopy ing per unit layer thickness of the medium. These so-called coefficients of absorption and scattering are generally taken to be properties of the irradiated layer, assumed to be a con- tinuum, and are experimentally by: 1.

Spectral reflectance signatures result from the presence or absence, as well as the position and shape of specific absorption features, of the surface. Examples of spectral signatures for soils, litter, and vegetation are shown in Figure In the case of vegetation, light absorption by leaf pigments dominates the reflectance spectrum in the visible region (– nm).

Laboratory simulations of reflectance spectra Albert S. Yen, Bruce C. Murray, and George R. Rossman Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena Abstract. Reflectance spectra from the surface of Mars collected by instruments such as.

where L t (λ) (W m −2 sr −1 nm −1) is the radiance at the top of the atmosphere, L B (λ) is the radiance that has transmitted through the water column, reflected off the channel substrate, and transmitted through the atmosphere before reaching the sensor, L w (λ) is the water‐leaving radiance due to the water column alone, L s (λ) is the radiance of sunlight reflected directly off Cited by: A review of near infrared reflectance properties of metal oxide nanostructures V.

Fang J. Kennedy reflectance properties of metal oxide nanostructures, GNS Science Report / 23 p. GNS Science Report /39 i Figure 2 Near-infrared reflectance spectra of. Excel, for data tabulation and plotting of reflectance spectra. The ALTA reflectance spectrometer is needed.

The device costs about $ The instruction guide that ships with the device contains 10 exercises that can be adapted for use. Time required for students to complete the assignment: One two-hour lab period, plus time outside of class. TYPICAL ROCK SPECTRA (CONT’D) Spectral contrast of rocks much higher than in soils or vegetation Example of DHR spectra from ASTER speclib Source: Hecker et al () Thermal Infrared Spectroscopy in the Laboratory and Field in Support of Land Surface Remote Sensing, in “Thermal Infrared Remote Sensing”, Springer.

exemplify how laboratory reflectance spectra of rare groups of carbonaceous chondrites exhibit distinctive features that can be used to remotely characterize the spectra of primitive asteroids. Our spectra cover the full electromagnetic spectrum from to 25 µm by using two spectrometers.

First one is a UV-NIR spectrometer that covers the Kerr Dental knows that specialty carbides are a critical component to your dental practice’s dental laboratory work.

We aim to constantly prioritize with the satisfaction of our professional clientele and the patients they serve by designing tools that promote efficacy, accuracy and.

Spectralon Diffuse Reflectance Standards can offer the highest diffuse reflectance values of any known substance.

Description Laboratory upwelled radiance and reflectance spectra of Kerr Reservoir sediment waters FB2

These durable, chemically inert standards can have typical reflectance values ranging from 2% to 99% and are spectrally flat over the UV-VIS-NIR spectrum. Spectral Reflectance.

Different surface features reflect and absorb the sun's electromagnetic radiation in different ways. The reflectance properties of an object depend on the material and its physical and chemical state, the surface roughness as well as the angle of the sunlight. SPIE Digital Library Proceedings.

Proc. SPIERemote Sensing of the Ocean, Sea Ice, and Large Water Regions(10 September ); doi: / Reflectance Spectra The reflectance spectra were determined using a LICOR Model integrating sphere radiome- ter with a resolution of 6 nm.

The reflectance spectra were made on the same areas of the same leaves used in the photosynthesis measurements. Spectrophotometric Determination of Pigment ConcentrationsCited by: reflectance spectra using two commercial dyes, one based on carminic acid and the other on alizarin.

EXPERIMENTAL. For this study, one carminic acid based lake (Carminium Pigment, Zecchi colori belle arti e restauro) and one alizarin based lake (Rose Madder, Winsor & Newton) were selected as they represent insect and plant derived dyes.

infrared reflectance spectroscopy is widely used in in-content. Krishnan et al. () compared analyses based dustry due to its simplicity, rapidness, and the need for on reflectance at two wavelengths in the visible light little or no sample preparation.

The technique was first region ( and nm) and two wavelengths in. REVIEW Near infrared reflectance spectroscopy for online particle size analysis of powders and ground materialsa Melchor C.

Pasikatan,b* James L.

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Steele,c Charles K. Spillmand and Ekramul Haquee bformerly Department of Biological and Agricultural Engineering. 4 Factors affecting spectral reflectance measurements Reflectance spectra measured under field conditions are subject to several sources of error, but well-designed field spectrometers and careful experiment design can minimise reflectance, radiance*, irradiance*.

All calibrations are NISTFile Size: 1MB. A reflectance spectra of an object contains information about both the color and brightness of an object.

All Wavelengths Visible light is only a small fraction of the entire electromagnetic spectrum. Everything we have seen above can be generalized to all wavelengths of light.

For example, we can measure the albedo of a sample in the infrared.Investigation of Linear Spectral Mixtures of the Reflectance Spectra using Laboratory Simulated Forest Scenes Baoxin Hu1,2, John R. Miller1, Jinnian Wang1,4, and Narendra S. Goel3 1.

Dept. of Physics and Astronomy, York University, Keele St. Toronto, ON M3J 1P3, Canada.Spectralon Reflectance Material gives the highest diffuse reflectance of any known material or coating over the UV-VIS-NIR region of the spectrum. In-house machining allows samples to be created quickly and easily, and modified throughout the design, prototyping and testing process.