Long-term activity of earthquake-induced landslides: A case study from Qionghai Lake Basin, Southwest of China

Wei, Xuemin; Chen, Ningsheng; Cheng, Qiangong; He, Na; Deng, Mingfeng; Tanoli, Javed Iqbal

doi:10.1007/s11629-013-2970-4

Cited by 25 publications

(13 citation statements)

References 36 publications

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“…It has already been Effects of human activity on erosion, sedimentation and debris flow activity -A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China documented that the rates of erosion and sedimentation in the region have increased dramatically since the 1950s, in line with the increasing population (Li, 1987;Xichang county annals office, 2008). It has been previously reported that seismic activity, extreme climatic events and human activity are the key factors that promote the development of erosion, sedimentation and debris flow in the Qionghai Lake watershed (Wei et al, 2014). In order to test the specific hypothesis that the increased erosion and sedimentation are linked to human activity, we first attempt to reconstruct the evolution of erosion, sedimentation and debris flow activity in the watershed and then compare the results with records of population growth and with other potential drivers such as climate change and seismic activity.…”

Section: Introductionmentioning

confidence: 99%

Effects of human activity on erosion, sedimentation and debris flow activity – A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China

Chen

et al. 2015

The Holocene

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We report the results of a study of the Qionghai Lake watershed, located on the southeastern edge of the Qinghai–Tibetan Plateau, China, designed to investigate the effects of human activity on changes in soil erosion intensity, debris flow activity and lacustrine sedimentation. The results indicate that the mean denudation rate of the watershed was about 0.82 mm/yr during the Holocene. However, since 1952, the rate has increased to 1.82 mm/yr, accompanied by a greatly increased sedimentation rate in Qionghai Lake. The increased denudation rate was accompanied by increases in population and the related intensified exploitation of land resources, including deforestation and an increase in the area of cultivated land. In addition, the increasing rate of denudation and lacustrine sedimentation is closely linked to the increased frequency of flooding and debris flows in the watershed. Based on our results, we estimate that the longevity of Qionghai Lake is about 1200 years in the case of natural evolution; however, this is reduced to 540 years in the context of continued intensive human activity in the region. These findings are important for the mitigation of mountain hazards such as debris flows and for the promotion of sustainable economic development in the Qionghai Lake area. They also provide a basis for obtaining an improved estimate of changes in denudation rate on the southeastern edge of the Qinghai–Tibet Plateau.

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Section: Introductionmentioning

confidence: 99%

Effects of human activity on erosion, sedimentation and debris flow activity – A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China

Chen

et al. 2015

The Holocene

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“…In fact, it is known that landslides generate seismic signals, "landquakes", which contain a specific signature: low-frequency waves released by the bedrock when the mass detaches, and high-frequency waves produced by the landslide mass while it is sliding, peaking when it impacts the deposition area (e.g. Yamada et al, 2012;Chen et al, 2013). If analysed separately, they can give information on both landslide initiation and impact ( Fig.…”

Section: Open Discussion: the Lesson Of A Killer Landslidementioning

confidence: 99%

“…Post-seismic landslides and long-term rock degradation have been reported in several areas of Japan (Okamoto et al, 2012), and a clear tendency for landslides to occur more frequently due to past earthquakes has been found in New Zealand (Parker et al, 2015). Several recent landslides in Sichuan, China, have been correlated with the M s 7.5 Xichang earthquake (Wei et al, 2014), which occurred more than 160 years ago.…”

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Brief communication: Post-seismic landslides, the tough lesson of a catastrophe

Xu¹,

Fan²,

Scaringi³

2017

Preprint

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Abstract. The rock avalanche that destroyed the village of Xinmo in Sichuan, China, on June 24th, 2017, brought the issue of landslide risk and disaster chain management in highly seismic regions back into the spotlight. The long-term post-seismic behaviour of mountain slopes is complex and hardly predictable. Nevertheless, the integrated use of field monitoring, remote sensing and real-time predictive modelling can help to set-up effective early warning systems, provide timely alarms, optimize rescue operations and perform secondary hazard assessments. We believe that a comprehensive discussion on post-seismic slope stability and on its implications for policy makers can no longer be postponed.

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“…Geohazards occur frequently in China, especially those secondary geological disasters triggered by earthquakes greatly threaten life and property safety (Ju et al 2010, Parker et al 2011, Xiao and Li 2012, Huang and Fan 2009, Huang et al 2013, Wei et al 2014. Technology development in geohazard monitoring, information management, and Dynamic Monitoring and Early Warning System (Liu et al 2009), have greatly promoted the wireless automatic monitoring on geohazards.…”

Section: Introductionmentioning

confidence: 99%

Automated Data Processing and Integration of Large Multiple Data Sources in Geohazards Monitoring

Liu

et al. 2017

IJGE

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The development of geohazard information management system has greatly promoted the wireless automation monitoring technology for geohazards. More monitoring instruments are increasingly used in geohazard monitoring. Consequently, the types of monitoring data become more and more complicated, and massive amount of monitoring data are collected, which raises new demands in data storage and retrieval. In order to meet the requirements of data processing in geohazard monitoring, this paper presents a method of geohazard monitoring data processing, realizing the heterogeneous data integration, data access optimization, and abnormal data processing. Having analyzed the wireless automation monitoring process and the features of geohazard monitoring data, we defined the data integration standards of multiple data sources. Based on this, we developed a Geohazard Monitoring Data Integration System, with optimization in both hardware and software. This system allows automatic integration of large monitoring data from multiple sources. It has important significance for geohazard monitoring and early warning. A Geohazard Monitoring Data Analyzing System based on the monitoring data integrated by this system and data mining technology is developed to fully explore the hidden values of Big Data. Through field tests in Guizhou province with 92 sets of monitoring equipment and 5 types of databases, this method is proven to meet the system requirements with satisfactory performance.

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Long-term activity of earthquake-induced landslides: A case study from Qionghai Lake Basin, Southwest of China

Cited by 25 publications

References 36 publications

Effects of human activity on erosion, sedimentation and debris flow activity – A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China

Effects of human activity on erosion, sedimentation and debris flow activity – A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China

Brief communication: Post-seismic landslides, the tough lesson of a catastrophe

Automated Data Processing and Integration of Large Multiple Data Sources in Geohazards Monitoring

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