DOI: 10.1016/j.jag.2017.09.008
Scopus记录号: 2-s2.0-85032209040
论文题名: Wavelength feature mapping as a proxy to mineral chemistry for investigating geologic systems: An example from the Rodalquilar epithermal system
作者: van der Meer F ; , Kopačková V ; , Koucká L ; , van der Werff H ; M ; A ; , van Ruitenbeek F ; J ; A ; , Bakker W ; H
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2018
卷: 64 起始页码: 237
结束页码: 248
语种: 英语
英文关键词: Absorption features
; Geology
; HyMAP
; Hyperspectral imaging
; Rodalquilar
; SE Spain
; Wavelength mapping
Scopus关键词: algorithm
; chemical composition
; epithermal deposit
; geological mapping
; image classification
; mineralogy
; multispectral image
; pixel
; remote sensing
; wavelength
; Almeria [Andalucia]
; Andalucia
; Rodalquilar
; Spain
英文摘要: The final product of a geologic remote sensing data analysis using multi spectral and hyperspectral images is a mineral (abundance) map. Multispectral data, such as ASTER, Landsat, SPOT, Sentinel-2, typically allow to determine qualitative estimates of what minerals are in a pixel, while hyperspectral data allow to quantify this. As input to most image classification or spectral processing approach, endmembers are required. An alternative approach to classification is to derive absorption feature characteristics such as the wavelength position of the deepest absorption, depth of the absorption and symmetry of the absorption feature from hyperspectral data. Two approaches are presented, tested and compared in this paper: the ‘Wavelength Mapper’ and the ‘QuanTools’. Although these algorithms use a different mathematical solution to derive absorption feature wavelength and depth, and use different image post-processing, the results are consistent, comparable and reproducible. The wavelength images can be directly linked to mineral type and abundance, but more importantly also to mineral chemical composition and subtle changes thereof. This in turn allows to interpret hyperspectral data in terms of mineral chemistry changes which is a proxy to pressure-temperature of formation of minerals. We show the case of the Rodalquilar epithermal system of the southern Spanish Gabo de Gata volcanic area using HyMAP airborne hyperspectral images. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79907
Appears in Collections: 气候变化事实与影响
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作者单位: University of Twente, Faculty of Geo-information Science and Earth Observation, Department of Earth Systems Analysis, Hengelosestraat 99, Enschede, AE, Netherlands; Czech Geological Survey, Klárov 3, Prague 1, Czech Republic
Recommended Citation:
van der Meer F,, Kopačková V,, Koucká L,et al. Wavelength feature mapping as a proxy to mineral chemistry for investigating geologic systems: An example from the Rodalquilar epithermal system[J]. International Journal of Applied Earth Observation and Geoinformation,2018-01-01,64