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1. Trend of fatal landslides in China | |||
ZHANG Fanyu,HUANG Xiaowei | |||
Earth Science 13 September 2017 | |||
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Abstract:There have a large number of slope movements occurred in China annually. Especially, fatal landslides are the most hazardous, causing serious fatalities and significant economic loss. In this study, the data of fatal landslides were collected from China geological environment information site and Ministry of Land and Resources of China in the period 2004-2016. Then a statistical analysis of the data was carried out to explore the trend of fatal landslide and the distribution of its losses in economic and fatality. In the studied period, a total of 4,718 deaths are collected resulting from 537 fatal landslides. It represents a frequency of 42 events and an average of 363 deaths every year. Meanwhile, fatal landslides fatalities are getting closer to total deaths of all geological hazards with the disaster records improvement. Although the economic loss of fatal landslides accounts for a small proportion of all hazards loss, however, the total amount is still enormous, 6.75 billion yuan recorded. The spatial distribution of fatal landslides shows intensive clusters in Southwest and Southern China, particularly densely distributing in Sichuan, Yunnan, and Hunan. Then the temporal distribution reveals a strong correlation with the main raining season, with the largest quantity of events occurring between June and September. Among the fatal landslides of which triggering factors have been recognized, 81.8% are associated with rainfall. This research gives a comprehensive recognition of fatal landslides trend and provides baseline information for disaster prevention and mitigation. | |||
TO cite this article:ZHANG Fanyu,HUANG Xiaowei. Trend of fatal landslides in China[OL].[13 September 2017] http://en.paper.edu.cn/en_releasepaper/content/4741454 |
2. Geologic characteristics of the Chang'E-3 exploration region | |||
ZHAO Jiannan,HUANG Jun,QIAO Le,XIAO ZhiYong,HUANG Qian,WANG Jiang,HE Qi,XIAO Long | |||
Earth Science 21 January 2014 | |||
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Abstract:We present topographic, geomorphologic and compositional characteristics of a 1 ×1 (~660 km2) region centered near the landing site of Chang'E-3 using the highest spatial resolution data available. We analyze the topography and slope using Digital Terrain Model (DTM) generated from Terrain Camera (TC) images. The exploration region is overall relatively flat and the elevation difference is less than 300 m, and the slopes of 80% area are less than 5 . Impact craters in the exploration region are classified into four types based on their degradation states. We investigate the wrinkle ridges visible in the exploration region in detail using TC and Lunar Reconnaissance Orbiter (LRO) Narrow Angle Camera (NAC) images. We calculate FeO and TiO2 abundances using Multispectral Imager (MI) data, and confirm two basaltic units: the northern part belongs to Imbrian low-Ti/very-low-Ti mare basalts, and the southern part is Eratosthenian low-Ti/high-Ti mare basalts. Finally, we produce a geological map and propose the geologic evolution of the exploration region. We also suggest several rover traverses to explore interesting targets and maximize the potential scientific output. | |||
TO cite this article:ZHAO Jiannan,HUANG Jun,QIAO Le, et al. Geologic characteristics of the Chang'E-3 exploration region[OL].[21 January 2014] http://en.paper.edu.cn/en_releasepaper/content/4582936 |
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