Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China(2025)

English name

CSTR

CSTR:11738.11.ncdc.ddfors.db7460.2026

DOI

10.12072/ncdc.ddfors.db7460.2026

Share type

Category

Debris Flow

contributors

SONG Dongri , ZHONG Wei , LI Xiaoyu , WEI Li

Datasets description

This data set includes grain distribution data of three debris flow samples on July 19, July 24, and July 29, 2025.

Base information

collect time	2025/07/19 - 2025/07/29
collect place	Jiangjia Ravine, Dongchuan District, Yunnan Province, China
altitude	1042.0m - 3269.0m
data size	1.1 MiB
data format	.xlsx,.docx

Data source description

Debris flow samples were sampled manually at the edge of ditches, and the sediment particle distribution was obtained through screening and analysis by Malvern laser particle sizer. See the data description document for details.

Data processing method

Raw observation data, not processed.

Data quality description

Manual verification results in good data quality.

Citations and annotations

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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

SONG Dongri, ZHONG Wei, LI Xiaoyu, WEI Li. Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China(2025). National Cryosphere Desert Data Center(http://www.ncdc.ac.cn), 2026. https://cstr.cn/CSTR:11738.11.ncdc.ddfors.db7460.2026.
SONG Dongri, ZHONG Wei, LI Xiaoyu, WEI Li. Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China(2025). National Cryosphere Desert Data Center(http://www.ncdc.ac.cn), 2026. https://www.doi.org/10.12072/ncdc.ddfors.db7460.2026.

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license agreement

This work is licensed under CC BY 4.0 (Creative Commons Attribution 4.0 International License).

Relevant data
File list

#	Dataset title
1	Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China, in 1965, 1966, 1974, 1975, 1982, and from 2003 to 2024
2	Video of debris flows that occurred at Jiangjia Ravine, Dongchuan, Yunnan, China(2025)
3	Seismic data of debris flow at Jiangjia Ravine, Yunnan, China(2025）
4	Rheological data of debris-flow slurry at Jiangjia Ravine, Yunnan, China(2025)
5	Debris-flow kinematic data at Jiangjia Ravine, Dongchuan, Yunnan, China(2025)
6	Video of debris flows that occurred in 2023 and 2024 at Jiangjia Ravine, Dongchuan, Yunnan, China.
7	Measurement Records of Debris Flow Gully Sections in Jiangjiagou, Yunnan Province(2025)
8	Seismic data of debris flow at Jiangjia Ravine, Yunnan, China, from 2023 to 2024
9	Rheological data of debris-flow slurry at Jiangjia Ravine, Yunnan, China, from 2003 to 2024
10	Debris-flow kinematic data at Jiangjia Ravine, Dongchuan, Yunnan, China, from 1961 to 2024

#	title	file size
1	2025年东川站蒋家沟泥石流取样及颗粒级配说明 Description of particle size distribution of debris flow in 2025.docx	1.1 MiB
2	2025年蒋家沟泥石流颗粒级配Particle size distribution of debris flows at Jiangjia Ravine, Dongchuan, Yunnan, China, 2025.xlsx	11.9 KiB