Wave-induced seafloor instabilities in the subaqueous Yellow River Delta—initiation and process of sediment failure

Wang, Zhenhao; Sun, Yongfu; Jia, Yonggang; Shan, Zhigang; Shan, Hongxian; Zhang, Shaotong; Wen, Mei; Liu, Xiaolei; Song, Yupeng; Zhao, Deyu

doi:10.1007/s10346-020-01399-2

Cited by 28 publications

(13 citation statements)

References 46 publications

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“…This is suggested by the recognition of a slide scar just below the rollover point of the delta (Fig. 3); similar processes have already been documented in other deltaic systems (e.g., L'Heureux et al, 2010;Trincardi et al, 2020), mainly triggered during severe storm-waves (e.g., Henkel, 1970;Obelcz et al, 2017;Wang et al, 2020). In both cases, the main contribution of riverine material in the gully formation is supported both by the coarsest-grained textures (mostly silty sand, represented by green and blue dots in Fig.…”

Section: Typifying the Continental Shelf Gulliessupporting

confidence: 73%

Holocene morpho-stratigraphic evolution of a compound submarine deltaic system in front of the shelf-incising Almanzora and Garrucha Canyons (Palomares margin, southeastern Iberia)

et al. 2022

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Section: Typifying the Continental Shelf Gulliessupporting

confidence: 73%

Holocene morpho-stratigraphic evolution of a compound submarine deltaic system in front of the shelf-incising Almanzora and Garrucha Canyons (Palomares margin, southeastern Iberia)

et al. 2022

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“…The YRDS come from the Quaternary sediments of the loess plateau in northwestern China, and their granulometric composition, mineral composition, and organic matter content show great similarity with the loess in the source area [20]. Extensive studies have already demonstrated that these silty sediments are prone to liquefaction and long-distance flow during high-energy conditions (e.g., occasional typhoons, extreme storms) due to their low internal cohesion [3,5,[21][22][23].…”

Section: Field Sitementioning

confidence: 99%

Design and Application of an In Situ Test Device for Rheological Characteristic Measurements of Liquefied Submarine Sediments

Zhang

Liu

Chen

et al. 2021

JMSE

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Liquefied submarine sediments can easily lead to submarine landslides and turbidity currents, and cause serious damage to offshore engineering facilities. Understanding the rheological characteristics of liquefied sediments is critical for improving our knowledge of the prevention of submarine geo-hazards and the evolution of submarine topography. In this study, an in situ test device was developed to measure the rheological properties of liquefied sediments. The test principle is the shear column theory. The device was tested in the subaqueous Yellow River delta, and the test results indicated that liquefied sediments can be regarded as “non-Newtonian fluids with shear thinning characteristics”. Furthermore, a laboratory rheological test was conducted as a contrast experiment to qualitatively verify the accuracy of the in situ test data. Through the comparison of experiments, it was proved that the use of the in situ device in this paper is suitable and reliable for the measurement of the rheological characteristics of liquefied submarine sediments. Considering the fact that liquefaction may occur in deeper water (>5 m), a work pattern for the device in the offshore area is given. This novel device provides a new way to test the undrained shear strength of liquefied sediments in submarine engineering.

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“…In contrast, seabed in situ observation technology can obtain dynamic observation data with timeliness, which is more conducive to the study of the occurrence mechanism and evolution process of submarine landslides (Zhang et al, 2016). Prior and others used sediment dynamic observation devices to record acceleration and inclination changes and found the revival of submarine landslide induced by storm surge in the underwater delta of the Yellow River (Prior et al, 1989); Chadwick et al (2012) and Wallace et al (2016) used high-precision water pressure gauges to monitor seabed subsidence and uplift in the deep sea so as to predict the time of volcanic eruption and capture the process of tectonic movement; Blum et al (2010) used the seabed acoustic measurement system to monitor the unstable slope of the seabed for the first time; Urlaub et al (2018) used the acoustic measurement system and pressure gauge to capture the sliding deformation process of the flank of Etna volcano; and Wang successfully captured the seabed deformation process induced by storm surge in the underwater delta of the Yellow River using the submarine landslide monitoring system (SLM) and put forward the mechanism of wave induced seabed instability in the underwater delta of the Yellow River (Wang et al, 2018;Wang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

In situ observation of wave-induced deformation of submarine landslides in tidal channel areas

Xue

Liu

et al. 2023

Front. Earth Sci.

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Landslides often occur in land slopes, estuaries, fjords, and intertidal zones in the marine environment, while landslides in tidal channels have not been systematically reported. The Zhoushan sea area is dotted with islands and crisscross tidal channels, which is a typical tidal channel development area. The data from the coastal zone and island survey, offshore engineering site selection, and environmental survey show that landslides are very common in tidal channel areas. The detailed study of this kind of landslide will enrich the research theory of submarine landslide and have important guiding significance for marine planning, development and site selection, and construction of coastal engineering in coastal areas. First, the submarine landslide in southwest of Zhujiajian Island in Zhoushan is investigated in this study. It is found that the sliding zone is parallel to the island coastline, with a length of about 250 m and an extension of 2 km, and the buried depth of the sliding surface is generally 8–10 m; then, through the self-developed seabed deformation observation system, combined with the hydrodynamic observation system, the landslide was observed in situ for 75 days. The observation results showed that the landslide slides at a constant speed along the sliding surface under the action of weight; the slides accelerate under the action of waves, and multiple sliding surfaces are generated in the landslide body at the same time. Finally, the genetic mechanism of submarine landslides in tidal channel areas is put forward.

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Wave-induced seafloor instabilities in the subaqueous Yellow River Delta—initiation and process of sediment failure

Cited by 28 publications

References 46 publications

Holocene morpho-stratigraphic evolution of a compound submarine deltaic system in front of the shelf-incising Almanzora and Garrucha Canyons (Palomares margin, southeastern Iberia)

Holocene morpho-stratigraphic evolution of a compound submarine deltaic system in front of the shelf-incising Almanzora and Garrucha Canyons (Palomares margin, southeastern Iberia)

Design and Application of an In Situ Test Device for Rheological Characteristic Measurements of Liquefied Submarine Sediments

In situ observation of wave-induced deformation of submarine landslides in tidal channel areas

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