摘要
Environmental change signals in geological or biological records are commonly reflected on their reflecting or transmitting images. These environmental signals can be extracted through digital image analysis. The analysis principle involves section line selection, color value reading and calculating environmental proxy index along the section lines, layer identification, auto-chronology and investigation of structure evolution of growth bands. On detailed illustrations of the image technique, this note provides image analyzing procedures of coral, tree-ring and stalagmite records. The environmental implications of the proxy index from image analysis are accordingly given through application demonstration of the image technique.
Environmental change signals in geological or biological records are commonly reflected on their reflecting or transmitting images. These environmental signals can be extracted through digital image analysis. The analysis principle involves section line selection, color value reading and calculating environmental proxy index along the section lines, layer identification, auto-chronology and investigation of structure evolution of growth bands. On detailed illustrations of the image technique, this note provides image analyzing procedures of coral, tree-ring and stalagmite records. The environmental implications of the proxy index from image analysis are accordingly given through application demonstration of the image technique.
作者
SUN Donghuai1,2, LIU Yu2 & TAN Ming31. South China Sea Institute of Oceanology, Chinese Academy of Sciences. Guangzhou 510301, China
2. State Key Laboratory of Loess and Quaternary Geology, Earth Environmental Institute, Chinese Academy of Sciences, Xi’an 710075, China
3. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
基金
This work was supported by the Knowledge Innovation Project of South China Insitute of Oceanology (Grant No. 5210607)
Knowledge Innovation Project of the Chinese Academy of Sciences (Grant No. KZCX2-108)
the National Natural Science Foundation of C
