Articles | Volume 14, issue 9
https://doi.org/10.5194/essd-14-3889-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/essd-14-3889-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description paper
| 
01 Sep 2022
Data description paper |
| 01 Sep 2022
A new global dataset of mountain glacier centerlines and lengths
Dahong Zhang
College of Urban and Environmental Science, Northwest University,
Xi'an 710127, PR China
Shaanxi Key Laboratory of Earth Surface System and Environmental
Carrying Capacity, Northwest University, Xi'an 710127, PR China
Gang Zhou
College of Urban and Environmental Science, Northwest University,
Xi'an 710127, PR China
Shaanxi Key Laboratory of Earth Surface System and Environmental
Carrying Capacity, Northwest University, Xi'an 710127, PR China
Wen Li
College of Urban and Environmental Science, Northwest University,
Xi'an 710127, PR China
Shaanxi Key Laboratory of Earth Surface System and Environmental
Carrying Capacity, Northwest University, Xi'an 710127, PR China
College of Urban and Environmental Science, Northwest University,
Xi'an 710127, PR China
Shaanxi Key Laboratory of Earth Surface System and Environmental
Carrying Capacity, Northwest University, Xi'an 710127, PR China
Xiaojun Yao
College of Geography and Environment Sciences, Northwest Normal
University, Lanzhou 730070, PR China
Shimei Wei
College of Geography and Environment Sciences, Northwest Normal
University, Lanzhou 730070, PR China
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Glacier centerlines are crucial input for many glaciological applications. We propose a new algorithm to derive glacier centerlines and implement the corresponding program in Python language. Application of this method to 48 571 glaciers in the second Chinese glacier inventory automatically yielded the corresponding glacier centerlines with an average computing time of 20.96 s, a success rate of 100 % and a comprehensive accuracy of 94.34 %.
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Short summary
The length of a glacier is a key determinant of its geometry; glacier centerlines are crucial inputs for many glaciological applications. Based on the European allocation theory, we present a new global dataset that includes the centerlines and lengths of 198 137 mountain glaciers. The accuracy of the glacier centerlines was 89.68 %. The constructed dataset comprises 17 sub-datasets which contain the centerlines and lengths of glacier tributaries.
The length of a glacier is a key determinant of its geometry; glacier centerlines are crucial...
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