Sedimentary records of holocene palaeo-mudflow events in Tianshui basin of the western Loess Plateau, China

Zha, Xiaochun; Huang, Chun Chang; Pang, Jiangli; Yang, Li; Liu, Junyu; Cuan, Yuda; Wang, Na

doi:10.1016/j.quaint.2019.06.027

Cited by 5 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Superimposing on the long‐term declining trend, there were centennial‐ to decadal‐scale fluctuations. It is worth noting that two decadal‐scale megapluvial intervals around 4.0 and 4.2 ka BP recorded in WY δ 18 O, which might have caused the great flood in the middle‐lower Yellow River valley (Zha et al, 2019; J. Zhang et al, 2019). The generally declining summer monsoon during the 4.2 ka event in our WY record is consistent with the stalagmite δ 18 O record from Oman (Fleitmann et al, 2003), and an annually resolved stalagmite record from northeastern India during this period (Kathayat et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Holocene Monsoon Change and Abrupt Events on the Western Chinese Loess Plateau as Revealed by Accurately Dated Stalagmites

Tan

Wang

et al. 2020

Geophysical Research Letters

View full text Add to dashboard Cite

Here we present, to date, the highest-resolved (~5 years) and most precisely dated Holocene monsoon climate reconstruction for the western Chinese Loess Plateau based on five replicated stalagmite δ 18 O records from Wuya Cave, eastern Gansu, China. Our record suggests the wettest period occurred between 10,500 and 6,600 a BP in this region. After this period, the amplitude of Asian summer monsoon decadal-scale variability progressively increased likely in response to increasing ENSO frequency since the middle Holocene. Our study reveals similar asymmetric centennial-scale double-plunging structures of the 8.2, 5.5, and 2.8 ka events in the western Chinese Loess Plateau, suggesting a possible role of solar activity whose impact was amplified around 8.2 ka BP by the meltwater flood. In contrast, the 4.2 ka event exhibit gradually declining monsoon rainfall with centennial-to decadal-scale fluctuations.

show abstract

Section: Discussionmentioning

confidence: 99%

Holocene Monsoon Change and Abrupt Events on the Western Chinese Loess Plateau as Revealed by Accurately Dated Stalagmites

Tan

Wang

et al. 2020

Geophysical Research Letters

View full text Add to dashboard Cite

show abstract

“…Compared with traditional loess landslides, loess mudflows exhibit fluid movement, so a loess mudflow has a greater mobility and a wider accumulation range, leading to greater danger (Leng et al, 2018;Zha et al, 2019). A large number of field investigations have shown that the motion characteristics of loess mudflows mainly include the following aspects.…”

Section: Introductionmentioning

confidence: 99%

Flume Tests to Investigate the Initiation Mechanism of Loess Mudflows on the Chinese Loess Plateau

Zhuang

Zhu

et al. 2021

Front. Earth Sci.

View full text Add to dashboard Cite

Loess has a strong water sensitivity, so loess landslides often transform into loess mudflows when water is added on the Chinese Loess Plateau, which results in high casualties and property loss of the Chinese government. In this study, a series of flume tests were designed to study the initiation of loess mudflows. The results reveal that the initiation modes of loess mudflows include large-scale mudflow and retrogressive toe sliding (Type A), and small-scale mudflow and retrogressive toe sliding (Type B). A model was used to analyze the test results that describe the effects of water flow on the potential for hillslope failure and liquefaction. It was found that the soil accumulation was unconditionally stable before a loess mudflow was formed, but as the rainfall continued, the water gradually infiltrated the soil, and the soil accumulation changed from unconditionally stable to unconditionally unstable. Thus, this led to different initiation modes during the tests. For Type A, the water preferentially infiltrated into the area with an uneven density and a large amount of water accumulated. The pore water pressure increased quickly and could not dissipate in time, so the loess liquefied. As the liquefaction area continued to expand and became larger, Type A occurred. Relatively speaking, Type B occurs in soil accumulations with relatively uniform densities. These results provide a certain scientific reference for the study of loess mudflows.

show abstract

Distinct periods of fan aggradation and incision for tributary valleys of different sizes along the Bailong River, eastern margin of the Tibetan Plateau

Meng

Stevens

et al. 2021

Geomorphology

View full text Add to dashboard Cite

Sedimentary records of holocene palaeo-mudflow events in Tianshui basin of the western Loess Plateau, China

Cited by 5 publications

References 32 publications

Holocene Monsoon Change and Abrupt Events on the Western Chinese Loess Plateau as Revealed by Accurately Dated Stalagmites

Holocene Monsoon Change and Abrupt Events on the Western Chinese Loess Plateau as Revealed by Accurately Dated Stalagmites

Flume Tests to Investigate the Initiation Mechanism of Loess Mudflows on the Chinese Loess Plateau

Distinct periods of fan aggradation and incision for tributary valleys of different sizes along the Bailong River, eastern margin of the Tibetan Plateau

Contact Info

Product

Resources

About