Assessment of critical rainfall scenarios for slope stability analyses based on historical rainfall records in Singapore

Kim, Yongmin; Rahardjo, Harianto; Nistor, Mărgărit‐Mircea; Satyanaga, Alfrendo; Leong, E. C.; Sham, Aaron Wai Lun

doi:10.1007/s12665-021-10160-4

Cited by 23 publications

(16 citation statements)

References 41 publications

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“…The effective precipitation is more closely related to research and civil-engineering purposes. Thus, the effective precipitation datasets provide essential data required in the study of landslides and slope stability [43,45]. For instance, civil engineers use specialized software and models (e.g., Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Model TRIGRS) [46] and Scoops 3D is widely used for the determination of slope stability with spatial scale datasets [47].…”

Section: Discussionmentioning

confidence: 99%

“…For the effective precipitation calculation, a normalization raster of PIM was used [43]. The procedure for the calculation of the effective precipitation takes into account the subsurface hydrologic properties, lithology, soil infiltration capacity, and slope as defined in previous specialty studies [41,44].…”

Section: Ep-effective Precipitation [Mm]; Wa-water Availability [Mm];...mentioning

confidence: 99%

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European Grid Dataset of Actual Evapotranspiration, Water Availability and Effective Precipitation

Nistor¹,

Satyanaga

Dezsi

et al. 2022

Atmosphere

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The sustainability of a territory is closely related to its resources. Due to climate change, the most precious natural resource, water, has been negatively affected by climatic conditions in terms of quantity and quality. CLIMAT datasets of 1 km2 spatial resolution were used and processed in the ArcGIS environment to generate maps of actual evapotranspiration, water availability, and effective precipitation for the periods of 1961–1990 (1990s), 2011–2040 (2020s), and 2041–2070 (2050s). The product is of paramount importance for the analysis of the actual situation in Europe indicating high water availability in the Alps Range, the Carpathians Mountains, Northern European countries, and the British Islands. On the other hand, low water availability has been evidenced in the Southern and Eastern European areas. For the future period (2050s), the monthly potential evapotranspiration is expected to increase by 30%. The climate models also show an increase in the actual evapotranspiration between past and future periods by 40%. The changes in water availability and effective precipitation between the past (1990s) and future (2050s) indicate decreases of 10%. The most affected areas by climate change are located within the Mediterranean areas, the Iberian Peninsula, and Eastern Europe.

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Section: Discussionmentioning

confidence: 99%

Section: Ep-effective Precipitation [Mm]; Wa-water Availability [Mm];...mentioning

confidence: 99%

European Grid Dataset of Actual Evapotranspiration, Water Availability and Effective Precipitation

Nistor¹,

Satyanaga

Dezsi

et al. 2022

Atmosphere

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“…When the slope is steep or certain geologic conditions are present, the clustered landslides may evolve into debris flows [14]. Rainfall-induced slope instability is usually related to slope type, gradient, soil properties, and rainfall intensity [15,16]. Controlling the gradients and types of slopes is one of the effective measures used to reduce rainfall damage [17,18], and the flatter the slope is, the higher the safety factor is during rainfall events [16].…”

Section: 1 Introduction Of the Test Systemmentioning

confidence: 99%

Experimental Study on the Evolutionary Law of Transient Saturation Zones in a Red Mud Dam under Rainfall Conditions

Chang,

Dong,

Liu

et al. 2024

Sustainability

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Utilizing a laboratory model test, this study seeks to evaluate the distribution patterns of volumetric moisture content, soil pressure, and pore water pressure within the body of a red mud dam, given varying initial conditions of slope types and ratios, during continuous heavy rainfall. The objective is to investigate the failure mechanisms of a red mud dam under distinct operational conditions during rainfall, thereby offering insights for landslide prevention and ensuring dam construction quality. The results suggest that a stepped red mud dam acts as a buffer platform, altering the seepage direction within the dam and minimizing the water seepage path. When the slope ratio is 1:1, the transient saturated zone is located on the slope face of the dam’s body, near the top of the slope, with the saturation time at the first monitoring point occurring 300 s earlier than in a dam with a slope ratio of 1:2. Rainfall affects the distribution of internal forces in the red mud dam body. After rainfall, in the transient saturated zone of the stepped dam body, vertical soil pressure decreases 25% and horizontal soil pressure decreases 6.5%; in the transient saturated zone of the dam with a slope ratio of 1:1, vertical soil pressure decreases 14.8% and horizontal earth pressure decreases 29%; in the transient saturated zone of a dam with a slope ratio of 1:3, the change in soil pressure is small.

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“…Antecedent soil moisture correlates more strongly with riverine flow. Antecedent soil moisture and rainfall are the important factors influencing riverine flow discharge [14,19], and the combination of antecedent rainfall and intra-event rainfall is vital to generate riverine flow discharge and sediment loads [14,20]. Larger floods caused by extreme rainfall respond more strongly to antecedent rainfall [21,22].…”

Section: Introductionmentioning

confidence: 99%

The Lag Effect of Riverine Flow-Discharge and Sediment-Load Response to Antecedent Rainfall with Different Cumulative Durations in Red Hilly Area in China

Zhao,

Nie,

Zheng

et al. 2023

Water

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Rainfall is an important factor that causes riverine flow and sediment transport, and extreme rainfall has a particularly significant effect on the fluctuations of riverine flow and sediment load. Based on the daily rainfall from 1990 to 2020, in the upper watershed of the Lianjiang River, which is one of the source tributaries of China’s largest freshwater lake (Poyang Lake), the 95th percentile method and minimum event interval time were employed to identify extreme rainfall events. Mann–Kendall test was used to check for abrupt changes in annual rainfall, riverine flow discharge, and riverine sediment loads, and to identify abrupt-change years; thus, different periods were divided via the abrupt change years. Multiple linear regression was applied to explore the lag effect of riverine flow-discharge and sediment-load response to antecedent rainfall, with different cumulative durations for each period. The results of the study indicated that (1) the expansion of garden land in 1995 caused a significant and abrupt change in sediment load. (2) Extreme rainfall events had a greater impact on riverine flow and sediment load as compared to ordinary rainfall. These events were found to explain more variations in riverine flow and sediment load, which led to longer lag times for both riverine flow and sediment transport. (3) The expansion of garden land under extreme rainfall conditions resulted in longer lag times for riverine flow and sediment transport, and reduced the need for antecedent rainfall with a longer pre-event time. Therefore, the analysis of antecedent rainfall and the lag response of riverine flow discharge and sediment load can help in understanding the response mechanism of riverine flow discharge and sediment load for the current era of increasing extreme rainfall. This analysis is crucial for improving the accuracy of simulating riverine flow and sediment under extreme rainfall conditions. Ultimately, it can contribute to effective watershed management during extreme rainfall events.

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Assessment of critical rainfall scenarios for slope stability analyses based on historical rainfall records in Singapore

Cited by 23 publications

References 41 publications

European Grid Dataset of Actual Evapotranspiration, Water Availability and Effective Precipitation

European Grid Dataset of Actual Evapotranspiration, Water Availability and Effective Precipitation

Experimental Study on the Evolutionary Law of Transient Saturation Zones in a Red Mud Dam under Rainfall Conditions

The Lag Effect of Riverine Flow-Discharge and Sediment-Load Response to Antecedent Rainfall with Different Cumulative Durations in Red Hilly Area in China

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