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Detailed Reference Information
Jin et al. 2003
Jin, L., Ji, J., Balsam, W., Chen, Y., Chen, J. and Lu, H. (2003). Determining magnetic susceptibility in loess-paleosol sections by near-infrared reflectance spectroscopy. Geophysical Research Letters 30: doi: 10.1029/2003GL017389. issn: 0094-8276.

Loess deposits are widespread, covering about 10 percent of the Earth's land surface. Magnetic susceptibility (MS), an important parameter in loess deposits, is a function of the concentration of magnetic minerals, which exhibit diagnostic features in their visible and near-infrared (NIR) spectra. Therefore, MS should correlate with spectral reflectance. To determine if a relationship exists between MS and reflectance spectra we analyzed NIR spectra and MS of over 550 samples from seven loess-paleosol sequences on Loess Plateau of Central China. NIR reflectance data were first converted into eight spectral bands and then a step-wise multiple linear regression was applied to a calibration dataset to establish a model to predict MS values. Test datasets indicate our model is very successful, all produced an r2 > 0.9. By applying this new method for estimating MS to hyperspectral remote sensing data we anticipate mapping soil quality and MS on the Loess Plateau.

BACKGROUND DATA FILES

Abstract

Keywords
Geomagnetism and Paleomagnetism, Environmental magnetism, Geomagnetism and Paleomagnetism, Instruments and techniques, Exploration Geophysics, Instruments and techniques, Electromagnetics, Measurement and standards, Global Change, Remote sensing
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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