Book contents
- Remote Compositional Analysis
- Cambridge Planetary Science
- Remote Compositional Analysis
- Copyright page
- Contents
- Contributors
- Foreword
- Preface
- Acknowledgments
- Part I Theory of Remote Compositional Analysis Techniques and Laboratory Measurements
- 1 Electronic Spectra of Minerals in the Visible and Near-Infrared Regions
- 2 Theory of Reflectance and Emittance Spectroscopy of Geologic Materials in the Visible and Infrared Regions
- 3 Mid-infrared (Thermal) Emission and Reflectance Spectroscopy
- 4 Visible and Near-Infrared Reflectance Spectroscopy
- 5 Spectroscopy of Ices, Volatiles, and Organics in the Visible and Infrared Regions
- 6 Raman Spectroscopy
- 7 Mössbauer Spectroscopy
- 8 Laser-Induced Breakdown Spectroscopy
- 9 Neutron, Gamma-Ray, and X-Ray Spectroscopy
- 10 Radar Remote Sensing
- Part II Terrestrial Field and Airborne Applications
- Part III Analysis Methods
- Part IV Applications to Planetary Surfaces
- Index
- References
2 - Theory of Reflectance and Emittance Spectroscopy of Geologic Materials in the Visible and Infrared Regions
from Part I - Theory of Remote Compositional Analysis Techniques and Laboratory Measurements
Published online by Cambridge University Press: 15 November 2019
- Remote Compositional Analysis
- Cambridge Planetary Science
- Remote Compositional Analysis
- Copyright page
- Contents
- Contributors
- Foreword
- Preface
- Acknowledgments
- Part I Theory of Remote Compositional Analysis Techniques and Laboratory Measurements
- 1 Electronic Spectra of Minerals in the Visible and Near-Infrared Regions
- 2 Theory of Reflectance and Emittance Spectroscopy of Geologic Materials in the Visible and Infrared Regions
- 3 Mid-infrared (Thermal) Emission and Reflectance Spectroscopy
- 4 Visible and Near-Infrared Reflectance Spectroscopy
- 5 Spectroscopy of Ices, Volatiles, and Organics in the Visible and Infrared Regions
- 6 Raman Spectroscopy
- 7 Mössbauer Spectroscopy
- 8 Laser-Induced Breakdown Spectroscopy
- 9 Neutron, Gamma-Ray, and X-Ray Spectroscopy
- 10 Radar Remote Sensing
- Part II Terrestrial Field and Airborne Applications
- Part III Analysis Methods
- Part IV Applications to Planetary Surfaces
- Index
- References
Summary
The theory of reflectance and emittance spectroscopy is based on the fundamental principles of radiative transfer (the propagation of energy in the form of electromagnetic radiation) in particulate media. This chapter outlines key models for radiative transfer in particulate media that can be forward-modeled to predict reflectance and emittance spectra or inverted to obtain the abundance of geologic materials from remote observations. The models are rooted in the optical properties of geologic materials, namely the complex index of refraction, and the scattering of light controlled by particulate texture, shape, and size. The chapter is divided into reflectance modeling and emittance modeling because of the key difference in the origin of the electromagnetic radiation: external to the grain’s surface and internal to the grain’s surface, though the principles are common across this division. The key models presented for reflectance spectroscopy are the Hapke model for scattering and reflectance and the Shkuratov model for reflectance. For emittance spectroscopy, the Hapke model forms the backbone upon which hybrid models incorporating Mie T-matrix concepts are integrated.
Keywords
- Type
- Chapter
- Information
- Remote Compositional AnalysisTechniques for Understanding Spectroscopy, Mineralogy, and Geochemistry of Planetary Surfaces, pp. 21 - 41Publisher: Cambridge University PressPrint publication year: 2019
References
- 5
- Cited by