ＡＳＴＥＲ熱赤外データのバンド間演算による石英指標，炭酸塩鉱物指標，およびＳｉＯ２含有量指標
書誌事項
- タイトル別名
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- Quartz Index, Carbonate Index and SiO2 Content Index Defined for ASTER TIR Data.
抄録
ASTER sensor aboard Terra platform has a capability of spectral measurement in the thermal infrared (TIR) region with a spatial resolution adequate for geological applications. This paper proposes several indices for lithologic study using ASTER TIR multispectral data. Silica minerals represented by the commonest mineral on earth, quartz, have a unique spectral property in TIR. They have lower emissivity in ASTER band 10 and band 12 spectral regions than in band 11. All the common carbonate minerals on earth represented by calcite and dolomite have another unique spectral feature. They have low emissivity in ASTER band 14 spectral region, and high emissivity in ASTER band 10 to 13 spectral region. In silicate rocks, the wavelength at trough in TIR emissivity spectra moves to longer wavelength as the rock type changes from felsic to ultramafic. The emissivity in band 12 is lower than in band 13 for felsic rocks, and higher for ultramafic rocks. Using the spectral features described above, several indices are defined. They are applied to ASTER Level 1 B data in Beishan area of Gansu Province, China. The results are compared with the information from the field and the laboratory geological investigations including the TIR spectra of the rocks collected at the site and published geological maps. It indicates that the indices defined here are very useful for lithologic studies.
収録刊行物
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- 日本リモートセンシング学会誌
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日本リモートセンシング学会誌 22 (1), 50-61, 2002
一般社団法人 日本リモートセンシング学会
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詳細情報 詳細情報について
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- CRID
- 1390282679643317888
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- NII論文ID
- 130003638680
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- ISSN
- 18831184
- 02897911
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可