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1. A unified landslide classification system for loess slopes: A critical review

Author:
Li, Yanrong; Mo, Ping
Source:
Geomorphology 2019 v.340 pp. 67-83
ISSN:
0169-555X
Subject:
topographic slope,   etc   ; case studies; landslides; loess;     Show all 4 Subjects
Abstract:
... Over the last few decades, many landslide classification systems have been developed. Inconsistencies across these systems have inevitably led to ambiguity, confusion, and contradictions. Specifically, there has been no consensus on what types of slope movements and failures constitute landslides. As a result, landslide classification systems based on the same criteria do not always include the sa ...
DOI:
10.1016/j.geomorph.2019.04.020

2. Study on evolutionary characteristics of toppling deformation of reverse-dip layered rock slope based on surface displacement monitoring data

Author:
Xie, Liangfu; Yan, Echuan; Wang, Jianhu; Lu, Gongda; Yu, Guangming
Source:
Environmental earth sciences 2018 v.77 no.4 pp. 156
ISSN:
1866-6280
Subject:
topographic slope,   etc   ; deformation; monitoring;     Show all 3 Subjects
Abstract:
... In this paper, a comprehensive analysis of spatiotemporal characteristics of reverse-dip slope toppling is conducted by taking the Xiaodongcao slope as an example. First, a spatial partitioning analysis of toppling deformation is performed based on the field reconnaissance and interpretation of engineering geological data. Then, the variations of toppling deformation in time domain are analyzed fo ...
DOI:
10.1007/s12665-018-7352-3

3. Improved radial movement optimization to determine the critical failure surface for slope stability analysis

Author:
Jin, Liangxing; Feng, Qixuan
Source:
Environmental earth sciences 2018 v.77 no.16 pp. 564
ISSN:
1866-6280
Subject:
topographic slope,   etc   ; algorithms; equations; methodology;     Show all 4 Subjects
Abstract:
... Slope stability analysis usually requires the determination of the critical failure surface. In this paper, a new global optimization algorithm, based on radial movement optimization, is proposed to search the non-circular critical failure surface of a slope. Factors of safety of the slip surfaces are determined using the Spencer method. Nonlinear equations from the Spencer method are solved using ...
DOI:
10.1007/s12665-018-7742-6

4. Experimental study for effects of terrain features and rainfall intensity on infiltration rate of modelled permeable pavement

Author:
Hou, Jingming; Zhang, Yangwei; Tong, Yu; Guo, Kaihua; Qi, Wenchao; Hinkelmann, Reinhard
Source:
Journal of environmental management 2019 v.243 pp. 177-186
ISSN:
0301-4797
Subject:
topographic slope,   etc   ; engineering; infiltration rate; landscapes; pavements; permeability; rain intensity;     Show all 7 Subjects
Abstract:
... In order to investigate the effects of the terrain slopes and rainfall intensity on the steady infiltration rate of permeable pavement, an experiment with the combinations of three types of permeability, three kinds of rainfall intensity, different cross slope and longitudinal slope are undertaken. Through analyzing the experimental data, it is indicated that: (1) the relation between the steady i ...
DOI:
10.1016/j.jenvman.2019.04.096

5. Postglacial deformation history of sackungen on the northern slope of Pic d'Encampadana, Andorra

Author:
McCalpin, James P.; Corominas, Jordi
Source:
Geomorphology 2019 v.337 pp. 134-150
ISSN:
0169-555X
Subject:
topographic slope,   etc   ; deformation; dipping; kinematics; landforms; sediments; soil profiles; Andorra;     Show all 8 Subjects
Abstract:
... Slopes undergoing deep-seated gravitational deformation create surface landforms that, if trenched and dated, yield critical data on slope kinematics. The northern slope of Pic d'Encampadana descends steeply 800 m down into the glaciated Valira d'Orient of Andorra and has long been known for its numerous antislope scarps (sackungen), indicative of deep-seated gravitational slope deformation (DSGSD ...
DOI:
10.1016/j.geomorph.2019.04.007

6. Sensitivity of rainstorm-triggered shallow mass movements on gully slopes to topographical factors on the Chinese Loess Plateau

Author:
Guo, Wen-Zhao; Luo, Li; Wang, Wen-Long; Liu, Zhen-Yi; Chen, Zhuo-Xin; Kang, Hong-Liang; Yang, Bo
Source:
Geomorphology 2019 v.337 pp. 69-78
ISSN:
0169-555X
Subject:
topographic slope,   etc   ; gravity; loess; mass movement; rainfall simulation; soil; China;     Show all 7 Subjects
Abstract:
... Topographical factor is one of the most important factors in understanding the formation mechanism of shallow mass movements on gully slopes on the Loess Plateau, China. However, the sensitivity of shallow mass movements on gully slopes to topography is poorly understood. Here, a series of rainfall simulation experiments was performed to quantitatively explore the influences of slope height (1.0 a ...
DOI:
10.1016/j.geomorph.2019.04.006

7. Downstream fining in a megaclast-dominated fluvial system: The Sabeto River of western Viti Levu, Fiji

Author:
Gale, S.J.; Ibrahim, Z.Z.; Lal, J.; Sicinilawa, U.B.T.
Source:
Geomorphology 2019 v.330 pp. 151-162
ISSN:
0169-555X
Subject:
topographic slope,   etc   ; particle size; rivers; sediment transport; sediments; terraces; Fiji;     Show all 7 Subjects
Abstract:
... Megaclast-dominated fluvial systems have been largely ignored by researchers. Yet megaclasts exert an important control on channel geomorphology, flow behaviour and sediment transport, and such systems are probably far more common than this neglect would suggest. Despite the explicit identification of megaclasts as the products of cataclysmic flow, observation of modern fluvial systems confirms th ...
DOI:
10.1016/j.geomorph.2019.01.009

8. Effect of side slope of main channels on formation and penetration of scour hole in confluences

Author:
Khosravinia, Payam; Nikpour, Mohammad Reza; Malekpour, Amir; Hosseinzadeh Dalir, Ali
Source:
River research and applications 2019 v.35 no.2 pp. 159-168
ISSN:
1535-1459
Subject:
topographic slope,   etc   ; geometry; hydrodynamics; shear stress; stream channels;     Show all 5 Subjects
Abstract:
... In an open‐channel confluence, deep scour holes and depositional point bars are usually formed due to high bed‐shear stresses and secondary circulations. In the present study, presuming the effectiveness of channel geometry on the flow dynamics at the confluence, some variables including different side slope angles of the main channel (θ = 45°, 60°, 75°, 90°), lateral to downstream discharge ratio ...
DOI:
10.1002/rra.3398

9. Seasonal Variations of Currents over the Western Slope of the Middle Caspian Bed

Author:
Ambrosimov, A. K.; Klyuvitkin, A. A.; Lisitsyn, A. P.
Source:
Water resources 2018 v.45 no.5 pp. 685-694
ISSN:
0097-8078
Subject:
topographic slope,   etc   ; seasonal variation; summer; winter;     Show all 4 Subjects
Abstract:
... Results of field observations of current dynamics in the frontal zone of the western Middle Caspian are given. The cyclonic circulation over the western slope in winter is shown to be a unidirectional intense current with velocities up to 100 cm/s. In summer, the current slows down and separates into branches—it turns southwestward and westward at the slope depth down to 150 m, southward and south ...
DOI:
10.1134/S0097807818050020

10. Analysis of sediment from steps in a small catchment in the Polish Carpathians in relation to the transition zone between the hillslope and fluvial system

Author:
Słowik-Opoka, Ewa; Wrońska-Wałach, Dominika; Michno, Anna
Source:
Catena 2018 v.165 pp. 237-250
ISSN:
0341-8162
Subject:
topographic slope,   etc   ; sediments; stream channels; watersheds; wood;     Show all 5 Subjects
Abstract:
... An investigation to determine the transition zone between the hillslope system and the fluvial system in connection with the degree of differentiation of sediment located upstream and downstream of log steps (LS) and boulder steps (BS) was undertaken in the channel of a stream located in a small mountain catchment area in the Silesian Beskidy Mts. (Polish Carpathians), a stream channel into which ...
DOI:
10.1016/j.catena.2018.01.036

11. Conceptualization of preferential flow for hillslope stability assessment

Author:
Kukemilks, Karlis; Wagner, Jean-Frank; Saks, Tomas; Brunner, Philip
Source:
Hydrogeology journal 2018 v.26 no.2 pp. 439-450
ISSN:
1431-2174
Subject:
topographic slope,   etc   ; hydrogeology; models; preferential flow;     Show all 4 Subjects
Abstract:
... This study uses two approaches to conceptualize preferential flow with the goal to investigate their influence on hillslope stability. Synthetic three-dimensional hydrogeological models using dual-permeability and discrete-fracture conceptualization were subsequently integrated into slope stability simulations. The slope stability simulations reveal significant differences in slope stability depen ...
DOI:
10.1007/s10040-017-1667-0

12. The abyssal and deep circulation of the Northeast Pacific Basin

Author:
Hautala, Susan L.
Source:
Progress in oceanography 2018 v.160 pp. 68-82
ISSN:
0079-6611
Subject:
topographic slope,   etc   ; basins; latitude; mixing; seamounts; Hawaii;     Show all 6 Subjects
Abstract:
... Three-dimensional abyssal and deep circulation of the region to the east and north of the Emperor Seamount Chain/Hawaiian Ridge is determined from a compilation of CTD and Argo float data, using a new overdetermined inverse technique for the geostrophic reference velocity and diapycnal/lateral mixing coefficients. The Northeast Pacific Basin is primarily sourced from its northern boundary, at a ra ...
DOI:
10.1016/j.pocean.2017.11.011

13. Influence of slip on lateral displacement of the tractor on slope

Author:
Makharoblidze, R.M.; Lagvilava, I.M.; Basilashvili, B.B.; Khazhomia, R.M.
Source:
Annals of Agrarian Science 2017 v.15 no.2 pp. 201-203
ISSN:
1512-1887
Subject:
topographic slope,   etc   ; mountains; tractors; wheels;     Show all 4 Subjects
Abstract:
... Theoretical analysis of influence of leading away of wheels on the lateral displacement of thetractor on a slope, is given. A calculating formula for lateral displacement of the tractor on the; down-hill side of the slope, considering: angle of the slope; mass of the tractor; coefficient of; leading away of wheels; speed of displacement and traveled path, is deduced. In accordance; with this, some ...
DOI:
10.1016/j.aasci.2017.05.012

14. Spatial characteristics of degraded land and their implications to the design and implementation of landscape restoration programs: West China as an example

Author:
Zhang, Daojun; Yin, Runsheng
Source:
Forest policy and economics 2019 v.107 pp. 101925
ISSN:
1389-9341
Subject:
topographic slope,   etc   ; deforestation; ecosystems; land degradation; landscapes; ownership; planning; remote sensing; watersheds; China;     Show all 10 Subjects
Abstract:
... The spatial dimension of PES programs has not been well recognized. This study aims to reveal the spatial characteristics of degraded or deforested land, using west China as an example, and elucidate how best to design and implement restoration efforts in order to improve the ecosystem conditions and functions. Using satellite imagery and geospatial tools, we first showed, among other things, how ...
DOI:
10.1016/j.forpol.2019.05.011

15. Late Quaternary lahars and lava dams: Fluvial responses of the Upper Tana River (Kenya)

Author:
Schoorl, J.M.; Veldkamp, A.; Claessens, L.; Wijbrans, J.R.; Olago, D.O.; Lievens, C.
Source:
Geomorphology 2019 v.341 pp. 28-45
ISSN:
0169-555X
Subject:
topographic slope,   etc   ; basalt; climate change; dams (hydrology); glaciation; lakes; lava; pumice; rivers; volcanic activity; Kenya;     Show all 11 Subjects
Abstract:
... Geomorphological and sedimentary records near the confluences of the Tana River and major tributaries draining the eastern slopes of Mt. Kenya and the Nyambeni Range, indicate impacts of Late Quaternary volcanic activity in their fluvial records. The main reconstructed event was triggered by a 366.9 ka basalt flow (40Ar/39Ar dated) which flowed along Kazita River from the Nyambeni Range blocking b ...
DOI:
10.1016/j.geomorph.2019.05.007

16. Identifying post-earthquake debris flow hazard using Massflow

Author:
Horton, Alexander J.; Hales, Tristram C.; Ouyang, Chaojun; Fan, Xuanmei
Source:
Engineering geology 2019 v.258 pp. 105134
ISSN:
0013-7952
Subject:
topographic slope,   etc   ; earthquakes; mass movement; models; momentum; planning; rain; risk; watersheds;     Show all 9 Subjects
Abstract:
... Catastrophic debris flows are common after large earthquakes and pose a significant risk for recovering communities. The depositional volume of these large debris flows is often much greater than the initiation volume, suggesting that bulking of the flow plays an important role in determining their volume, speed, and runout distance. Observations from recent earthquakes have driven progress in und ...
DOI:
10.1016/j.enggeo.2019.05.011

17. Block stream characteristics in Southern Carpathians (Romania)

Author:
Șerban, Raul-David; Onaca, Alexandru; Șerban, Mihaela; Urdea, Petru
Source:
Catena 2019 v.178 pp. 20-31
ISSN:
0341-8162
Subject:
topographic slope,   etc   ; Pleistocene epoch; granite; inventories; landforms; landscapes; monitoring; permafrost; regression analysis; streams; Carpathian region; Romania;     Show all 12 Subjects
Abstract:
... Block streams, as common features in the Southern Carpathians, are essential for understanding the evolution of alpine environments. Despite their widespread occurrence, they have frequently been omitted from previous inventories of periglacial landforms and from the general understanding of landscape development. This study evaluated the environmental controls on spatial distribution and dimensio ...
DOI:
10.1016/j.catena.2019.03.003

18. Prediction of soil thicknesses in a headwater hillslope with constrained sampling data

Author:
Liu, Jintao; Han, Xiaole; Chen, Xi; He, Ruimin; Wu, Pengfei
Source:
Catena 2019 v.177 pp. 101-113
ISSN:
0341-8162
Subject:
topographic slope,   etc   ; biogeochemistry; data collection; diffusivity; highlands; linear models; prediction; soil depth; water; watersheds; China;     Show all 11 Subjects
Abstract:
... The spatial distribution of soil thickness plays a critical role in upland hydrological and biogeochemical processes. Process-based models are thought to have great potentials for predicting soil thickness. However, applications of process-based approaches have been greatly limited by parameter estimation, which typically requires specialized laboratories. In this study, on the basis of field work ...
DOI:
10.1016/j.catena.2019.02.009

19. Prediction of the subsurface flow of hillslopes using a subsurface time-area model

Author:
Fariborzi, H.; Sabzevari, T.; Noroozpour, S.; Mohammadpour, R.
Source:
Hydrogeology journal 2019 v.27 no.4 pp. 1401-1417
ISSN:
1431-2174
Subject:
topographic slope,   etc   ; equations; hydrogeology; models; overland flow; prediction; rain intensity; sandy loam soils; subsurface flow;     Show all 9 Subjects
Abstract:
... Prediction of subsurface flow (SF) in hillslopes is more complicated than prediction of surface flow; hence, a simple and practical SF model would interest hydrogeologists. For the first time, the time-area method is employed to estimate the SF of hillslopes. The locations of the isochrone curves for complex hillslopes were determined using SF travel-time equations. Some equations were developed t ...
DOI:
10.1007/s10040-018-1909-9

20. Wavelet Analysis of Soil Moisture Measurements for Hillslope Hydrological Processes

Author:
Lee, Eunhyung; Kim, Sanghyun
Source:
Journal of hydrology 2019
ISSN:
0022-1694
Subject:
topographic slope,   etc   ; data collection; evapotranspiration; mountains; rain; seasonal variation; soil water; time series analysis; vegetation; wavelet;     Show all 10 Subjects
Abstract:
... Spatial and temporal distributions of soil moisture are important for explaining hydrological processes at the hillslope scale. The fate of various hillslope flow paths can vary seasonally and their relationship with rainfall events can be nonstationary. We collected high resolution in situ soil moisture datasets at 30 points (10 locations in three depths) between March and November in a steep mou ...
DOI:
10.1016/j.jhydrol.2019.05.023