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Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China, in 1965, 1966, 1974, 1975, 1982, and from 2003 to 2024
  • 2025/01/03 00:36
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English name
Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China, in 1965, 1966, 1974, 1975, 1982, and from 2003 to 2024
CSTR
CSTR:11738.11.NCDC.DDFORS.DB6721.2025
DOI
10.12072/ncdc.ddfors.db6721.2025
Share type
Journal data - open download
Category
Debris Flow
source site
State Field Observation and Research Station of Debris Fow in Dongchuan, Yunnan
contributors
Song Dongri , Zhong Wei , Li Xiaoyu , Wei Li
Datasets description

 The dataset includes particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China, in 1965, 1966, 1974, 1975, 1982, and from 2003 to 2024.

Base information
collect time 1965/01/01  -  2024/12/31
collect place Jiangjia Ravine, Dongchuan District, Yunnan Province, China
altitude 1042.0m - 3269.0m
data size 1.2 MiB
data format
Coordinate system
Data thumbnail
Data source description

 Debris-flow samples are collected by suspending cable sampler or manual sampling. The cable sampling is collected from the moving surges with a bucket that has a diameter of 190 mm and a volume of 0.012 m3 . Manual sampling collects the debris-flow deposition near the channel bank by using a circular or square bucket with a volume of 0.0155 m3 or 0.009 m3, respectively. The sample is air-dried and sieved through a steel mesh for particle size analysis. For sediments larger than 0.25 mm, the particle size is determined using the sieve analysis method. For particles smaller than 0.25 mm, the pycnometer method was employed for particle size distribution analysis before 2004. Since 2004, the Marvin Laser Particle Size Analyzer (model MS2000) has been used.

Data processing method

  Raw observational data, unprocessed.

Data quality description

 The data quality is reliable.

Citations and annotations
In order to protect the rights and interests of the platform's scientific and technological resources, expand the services of the platform center, and enhance the application potential of scientific and technological resources, resource users are requested to mark and quote the research results (including published papers, treatises, data products, unpublished research reports, data products, etc.) generated by the use of resources in the following manner.
In works such as paper, patent, and monograph, please indicate the data source. In the acknowledgments section of Chinese publications, include the statement “感谢中国科学院东川泥石流观测研究站为本研究提供了相关数据” . In the acknowledgments section of English publications, please state, “We would like to thank the Dongchuan Debris Flow Observation and Research Station (DDFORS), Chinese Academy of Sciences, for providing the field observation data for this study.”For any data-related issues, please contact Li Wei (weili@imde.ac.cn) and Dongri Song (drsong@imde.ac.cn).

For the achievements published in English, please refer to the following specifications： The dataset is provided by National Cryosphere Desert Data Center. (http://www.ncdc.ac.cn).

Data reference
  1. Song Dongri, Zhong Wei, Li Xiaoyu, Wei Li. Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China, in 1965, 1966, 1974, 1975, 1982, and from 2003 to 2024. National Cryosphere Desert Data Center(http://www.ncdc.ac.cn), 2025. https://cstr.cn/CSTR:11738.11.NCDC.DDFORS.DB6721.2025.
  2. Song Dongri, Zhong Wei, Li Xiaoyu, Wei Li. Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China, in 1965, 1966, 1974, 1975, 1982, and from 2003 to 2024. National Cryosphere Desert Data Center(http://www.ncdc.ac.cn), 2025. https://www.doi.org/10.12072/ncdc.ddfors.db6721.2025.
license agreement
Creative Commons License   This work is licensed under a Creative Commons Attribution 4.0 International License.
# title file size
1 Acquisition period for dataset at Jiangjia Ravine.xlsx 20.7 KiB
2 Description of particle size distribution of debris flow at Jiangjia Ravine.docx 1.1 MiB
3 Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China.xlsx 80.6 KiB
4 _ncdc_meta_.json 5.1 KiB
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How to get the data 
It can be downloaded directly or via FTP, and it is recommended to download large data sets via FTP.
publications
Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China, in 1965, 1966, 1974, 1975, 1982, and from 2003 to 2024
east 103.22
west 103.11
south  26.18
north  26.29
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Service information
contacts:
Min Yufang
phone:
0931-4967596
mailbox:
ncdc@lzb.ac.cn
Contact information
contributors:
Song Dongri , Zhong Wei , Li Xiaoyu , Wei Li
author:
Wei Li
manager:
Song Dongri , Wei Li

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