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Guo W.,CAS Lanzhou Cold and Arid Regions Environmental and Engineering Research Institute | Liu S.,CAS Lanzhou Cold and Arid Regions Environmental and Engineering Research Institute | Xu J.,CAS Lanzhou Cold and Arid Regions Environmental and Engineering Research Institute | Wu L.,CAS Lanzhou Cold and Arid Regions Environmental and Engineering Research Institute | And 7 more authors.
Journal of Glaciology | Year: 2015

The second Chinese glacier inventory was compiled based on 218 Landsat TM/ETM+ scenes acquired mainly during 2006-10. The widely used band ratio segmentation method was applied as the first step in delineating glacier outlines, and then intensive manual improvements were performed. The Shuttle Radar Topography Mission digital elevation model was used to derive altitudinal attributes of glaciers. The boundaries of some glaciers measured by real-time kinematic differential GPS or digitized from high-resolution images were used as references to validate the accuracy of the methods used to delineate glaciers, which resulted in positioning errors of ±10 m for manually improved clean-ice outlines and ±30 m for manually digitized outlines of debris-covered parts. The glacier area error of the compiled inventory, evaluated using these two positioning accuracies, was ±3.2%. The compiled parts of the new inventory have a total area of 43 087 km2, in which 1723 glaciers were covered by debris, with a total debris-covered area of 1494 km2. The area of uncompiled glaciers from the digitized first Chinese glacier inventory is ∼8753 km2, mainly distributed in the southeastern Tibetan Plateau, where no images of acceptable quality for glacier outline delineation can be found during 2006-10. © 2015, International Glaciology Society. All rights reserved.


Fu S.-C.,Hubei University | Lu Q.-D.,Fujian Institute of Geology Survey and Research
Geological Bulletin of China | Year: 2010

In recent ten years, Fujian Institute of Geology Survey and Research explores continually the mapping methods in the non-marine volcanic terrain Fu'an and other three breadths 1:50000-scale regional geological surveying item obtained important progression in mapping methods of volcanic terrain, which was developing "volcanic sequence-rock facies (lithology)" diplex mapping method into "volcanic construction-lithologic rock facies-volcanic sequence" triune mapping method in the volcanic terrain. We sum up the mapping method in order to improve the mapping quality in new round regional geological surveying together.


Fu S.-C.,Hubei University | Ma J.-Q.,Fujian Institute of Geology Survey and Research | Lin H.-C.,Fujian Institute of Geology Survey and Research
Geological Bulletin of China | Year: 2010

Base on the 1:250000-scale and some 1:50000-scale regional geological survey, academic research and high precision dating results accomplished recently, we set out and correlate the lithostratigraphic units based on metamorphic rock combination type, metamorphic deformation feature, space distribution rule, contact relation and isotopic dating, then rebuild stratigraphic unit system of medium-metamorphosed rocks in the Fujian Province.

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