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1. Evolution of uphill-facing scarps by flexural toppling of slate with high-angle faults

Author:
Yokoyama, Osamu
Source:
Geomorphology 2020 v.352 pp. 106977
ISSN:
0169-555X
Subject:
topographic slope,   etc   ; cartography; earthquakes; groundwater;     Show all 4 Subjects
Abstract:
... Uphill-facing scarps are typical surface expressions of deep-seated gravitational slope deformations and are commonly created by flexural toppling. However, their evolution mechanisms are not well-understood partly because of the difficult in observing their internal structures. This study therefore performed high-resolution geomorphic analyses and thorough geological mapping in a slate-rich area ...
DOI:
10.1016/j.geomorph.2019.106977

2. Refining the Uluzzian through a new lithic assemblage from Roccia San Sebastiano (Mondragone, southern Italy)

Author:
Collina, Carmine; Marciani, Giulia; Martini, Ivan; Donadio, Carlo; Repola, Leopoldo; Bortolini, Eugenio; Arrighi, Simona; Badino, Federica; Figus, Carla; Lugli, Federico; Oxilia, Gregorio; Romandini, Matteo; Silvestrini, Sara; Piperno, Marcello; Benazzi, Stefano
Source:
Quaternary international 2020
ISSN:
1040-6182
Subject:
topographic slope,   etc   ; Pleistocene epoch; fauna; Italy;     Show all 4 Subjects
Abstract:
... Roccia San Sebastiano is a tectonic-karstic cave located at the foot of the southern slope of Mt. Massico, in the territory of Mondragone (Caserta) in Campania (southern Italy). Systematic excavation has been carried out since 2001, leading to the partial exploration of an important Pleistocene deposit, extraordinarily rich in lithic and faunal remains. The aim of this paper is to (1) present the ...
DOI:
10.1016/j.quaint.2020.03.056

3. A rational runoff coefficient for a revisited rational formula

Author:
Baiamonte, Giorgio
Source:
Hydrological sciences journal 2020 v.65 no.1 pp. 112-126
ISSN:
2150-3435
Subject:
topographic slope,   etc   ; antecedent moisture; equations; rain; runoff;     Show all 5 Subjects
Abstract:
... The Rational Formula (RF) is probably the most frequently applied equation in practical hydrology to compute the peak discharge, due to its simplicity and effective compromise between theory and data availability. Thus, after more than a century, the estimation of peak discharge through the RF is still an important and challenging issue in hydrology. The RF assumes response linearity and sometimes ...
DOI:
10.1080/02626667.2019.1682150

4. A statistics-based discrete element modeling method coupled with the strength reduction method for the stability analysis of jointed rock slopes

Author:
Wang, Hanbin; Zhang, Bin; Mei, Gang; Xu, Nengxiong
Source:
Engineering geology 2020 v.264 pp. 105247
ISSN:
0013-7952
Subject:
topographic slope,   etc   ; rocks; shear strength; statistical models;     Show all 4 Subjects
Abstract:
... The stability of jointed rock slopes can be effectively analyzed using the discrete element method (DEM). However, the criteria for terminating the DEM iterative calculation process and determining the factor of safety (FOS) are not well defined. In this paper, a displacement-statistics-based discrete element modeling method (DSDM) is proposed to analyze the stability of jointed rock slopes by cou ...
DOI:
10.1016/j.enggeo.2019.105247

5. Dynamic-response characteristics and deformation evolution of loess slopes under seismic loads

Author:
Wu, Zhijian; Zhang, Dan; Wang, Shengnian; Liang, Chao; Zhao, Duoyin
Source:
Engineering geology 2020 v.267 pp. 105507
ISSN:
0013-7952
Subject:
topographic slope,   etc   ; deformation; disasters; earthquakes; geophysics; loess; mathematical models; China;     Show all 8 Subjects
Abstract:
... The Loess Plateau is one of the most seismically and geologically active regions in China. The related catastrophic earthquakes and geological disasters have caused more than 1.4 million deaths in the plateau. In this study, the slopes on the edge of the loess tableland in Pingliang City, Gansu Province—the core area of the Loess Plateau—are investigated. Based on large-scale shaking-table model t ...
DOI:
10.1016/j.enggeo.2020.105507

6. Influence of urban forms on surface flow in urban pluvial flooding

Author:
Bruwier, Martin; Maravat, Claire; Mustafa, Ahmed; Teller, Jacques; Pirotton, Michel; Erpicum, Sébastien; Archambeau, Pierre; Dewals, Benjamin
Source:
Journal of hydrology 2020 v.582 pp. 124493
ISSN:
0022-1694
Subject:
topographic slope,   etc   ; buildings; models; overland flow; rain; statistical analysis;     Show all 6 Subjects
Abstract:
... This paper presents a systematic analysis of the influence of nine urban characteristics (distance between buildings, mean building size, building coverage, etc.) on surface flow in case of pluvial flooding. Time dependent stored volumes, outflow discharges and mean water depths were computed for a set of 2000 synthetic urban forms, considering various terrain slopes and return periods of the rain ...
DOI:
10.1016/j.jhydrol.2019.124493

7. Effects of hillslope geometry on spatial infiltration using the TOPMODEL and SCS-CN models

Author:
Pishvaei, M. H.; Sabzevari, T.; Noroozpour, S.; Mohammadpour, R.
Source:
Hydrological sciences journal 2020 v.65 no.2 pp. 212-226
ISSN:
2150-3435
Subject:
topographic slope,   etc   ; equations; geometry; models; runoff; soil conservation;     Show all 6 Subjects
Abstract:
... The estimation of infiltration is a main issue in runoff simulation. The geometry of hillslopes (plan shape and profile curvature) may affect the responses, as well as infiltration over the hillslopes. In this study, the equations of TOPMODEL (a topography-based model) were applied to complex hillslopes to develop the complex TOPMODEL. This model was coupled with the SCS-CN (Soil Conservation Serv ...
DOI:
10.1080/02626667.2019.1686636

8. WITHDRAWN: Hyperconcentrated sediment in rill erosion from a loess slope with aeolian sand intrusion

Author:
Feng, Ren; Lei, Tingwu; Gao, Xiaofeng; Huang, Yuhan; Chen, Chao; Ban, Yunyun
Source:
International soil and water conservation research 2020
ISSN:
2095-6339
Subject:
topographic slope,   etc   ; eolian sands; loess; rill erosion; soil; water conservation;     Show all 6 Subjects
Abstract:
... This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause.The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal. ...
DOI:
10.1016/j.iswcr.2020.01.002

9. Structural features and the evolutionary mechanisms of the basal shear zone of a rockslide

Author:
Furuki, Hirokazu; Chigira, Masahiro
Source:
Engineering geology 2019 v.260 pp. 105214
ISSN:
0013-7952
Subject:
topographic slope,   etc   ; landslides; rockfalls; rocks;     Show all 4 Subjects
Abstract:
... Rockslides commonly form a shear zone to accommodate their displacements. As such, the landslide history and mechanism must be recorded in the structural features of the shear zone. We investigated the basal shear zone of a 60-m-thick rockslide body with a lateral displacement of 200 m on a dip slope and found the evolutionary mechanisms of a basal shear zone of a rockslide. A basal shear zone on ...
DOI:
10.1016/j.enggeo.2019.105214

10. Characteristics of summer regional rainfall events over Ili River Valley in Northwest China

Author:
Li, Liangliang; Li, Jian; Yu, Rucong
Source:
Atmospheric research 2020 v.243 pp. 104996
ISSN:
0169-8095
Subject:
topographic slope,   etc   ; landscapes; meteorological data; rain; river valleys; summer; Central Asia; China;     Show all 8 Subjects
Abstract:
... The Ili River Valley is a trumpet-like terrain facing westward. From west to east, the elevation of the valley floor increases and the width of the valley decreases. Using hourly rainfall data of 2009–2016 obtained from 100 gauge stations over the Ili River Valley, the climatic features of summer regional rainfall events (RREs) are investigated. The mean amount and frequency of rainfall during sum ...
DOI:
10.1016/j.atmosres.2020.104996

11. Quaternary rock avalanches in the Apennines: New data and interpretation of the huge clastic deposit of the L'Aquila Basin (central Italy)

Author:
Seta, Marta Della; Antonielli, Benedetta; Della Seta, Marta; Esposito, Carlo; Scarascia Mugnozza, Gabriele; Schilirò, Luca; Spadi, Marco; Tallini, Marco
Source:
Geomorphology 2020 v.361 pp. 107194
ISSN:
0169-555X
Subject:
topographic slope,   etc   ; Pleistocene epoch; avalanches; basins; cold zones; earthquakes; geometry; morphometry; tectonics; Italy;     Show all 10 Subjects
Abstract:
... In this paper we inferred the origin of a huge clastic deposit (i.e. L'Aquila Breccia) which widely crops out within the L'Aquila intermontane basin, a tectonic depression in central Apennines, that is bounded by seismogenic active faults, as demonstrated by the earthquake occurred on April 6, 2009 (Mw 6.1). The genesis of this deposit is still debated in the literature: for this reason, a number ...
DOI:
10.1016/j.geomorph.2020.107194

12. Dynamic properties of Tianshui saturated remolded loess: A laboratory study

Author:
Wang, Haojie; Sun, Ping; Liu, Enlong; Li, Rongjian
Source:
Engineering geology 2020 v.272 pp. 105570
ISSN:
0013-7952
Subject:
topographic slope,   etc   ; anisotropy; deformation; earthquakes; isotropy; landslides; loess; modulus of elasticity; shrinkage; China;     Show all 10 Subjects
Abstract:
... Tianshui City is located in an earthquake-prone area of China that has experienced many earthquake-induced loess landslides. The formation of such landslides is closely related to the dynamic properties and residual deformation characteristics of the loess when seismically loaded. However, the loess dynamics under earthquakes in the Tianshui area have been little studied. Therefore, to understand ...
DOI:
10.1016/j.enggeo.2020.105570

13. Centrifuge modeling of failure behaviors of sandy slope caused by gravity, rainfall, and base shaking

Author:
Hung, Wen-Yi; Tran, Minh-Canh; Yeh, Fu-Hsuan; Lu, Chih-Wei; Ge, Louis
Source:
Engineering geology 2020 v.271 pp. 105609
ISSN:
0013-7952
Subject:
topographic slope,   etc   ; clay; cohesion; earthquakes; gravel; gravity; kaolinite; mixing; models; rain; rain intensity; sand; water content;     Show all 13 Subjects
Abstract:
... This study focused on slope stability behaviors under different conditions, including gravity, rainfall, and earthquake. The slope models were prepared by mixing sand (80%) and clay (kaolinite, 20%) and compacting at optimum water content. Under the gravitational condition, the model tests were performed with three different directions of a gravel layer embedded into the slope. During the test, th ...
DOI:
10.1016/j.enggeo.2020.105609

14. Topographic and near-surface stratigraphic amplification of the seismic response of a mountain slope revealed by field monitoring and numerical simulations

Author:
Luo, Yonghong; Fan, Xuanmei; Huang, Runqiu; Wang, Yunsheng; Yunus, Ali P.; Havenith, H.B.
Source:
Engineering geology 2020 v.271 pp. 105607
ISSN:
0013-7952
Subject:
topographic slope,   etc   ; earthquakes; geophysics; hazard characterization; mathematical models; monitoring; surveys; China;     Show all 8 Subjects
Abstract:
... The evaluation of seismic site amplification and its relationship with geological structures play a vital role in earthquake engineering and hazard assessment. This study presents an analysis of topographic and geologic site amplification effects observed in the Qiaozhuang region, Sichuan Province, China. Seismic recordings at several monitoring stations installed on two slopes located at a distan ...
DOI:
10.1016/j.enggeo.2020.105607

15. Predicting gully occurrence at watershed scale: Comparing topographic indices and multivariate statistical models

Author:
Conoscenti, Christian; Rotigliano, Edoardo
Source:
Geomorphology 2020 v.359 pp. 107123
ISSN:
0169-555X
Subject:
topographic slope,   etc   ; graphs; gully erosion; inventories; prediction; ravines; regression analysis; statistical models; streams; watersheds; Italy; Sicily;     Show all 12 Subjects
Abstract:
... In this study, the ability of five topographic indices to predict the gully trajectories observed in two adjacent watersheds located in Sicily (Italy) was evaluated. Two of these indices, named MSPI and MTWI, as far as we know, have never been employed to this aim. They were obtained by multiplying the stream power index (SPI) and the topographic wetness index (TWI), respectively, by the convergen ...
DOI:
10.1016/j.geomorph.2020.107123

16. A new criterion for the evaluation of the velocity field for rainfall-runoff modelling using a shallow-water model

Author:
Taccone, Florent; Antoine, Germain; Delestre, Olivier; Goutal, Nicole
Source:
Advances in water resources 2020 v.140 pp. 103581
ISSN:
0309-1708
Subject:
topographic slope,   etc   ; equations; friction; hydrograph; hydrologic models; mountains; rain; roughness; runoff; water resources; watersheds;     Show all 11 Subjects
Abstract:
... The aim of this work is to evaluate the accuracy of physically based models using the 2D Shallow Water Equations (SWE) for the simulation of rain-induced runoff. A key expectation of these models is to be able to reproduce properly both hydrograph at the outlet of the watershed and the associated velocity field within the spatial domain for a given rain event. However, this ability can be very cha ...
DOI:
10.1016/j.advwatres.2020.103581

17. Performance evaluation of satellite- and model-based precipitation products over varying climate and complex topography

Author:
Amjad, Muhammad; Yilmaz, M. Tugrul; Yucel, Ismail; Yilmaz, Koray K.
Source:
Journal of hydrology 2020 v.584 pp. 124707
ISSN:
0022-1694
Subject:
topographic slope,   etc   ; atmospheric precipitation; climate; hydrology; remote sensing; satellites; uncertainty; Turkey (country);     Show all 8 Subjects
Abstract:
... Accuracy assessment of precipitation retrievals is a pre-requisite for many hydrological studies as it helps to understand the source and the magnitude of the uncertainty in hydrological response variables, particularly over regions with complex topography. This study evaluates GPM IMERGv05, TMPA 3B42V7, ERA-Interim, and ERA5 precipitation products using 256 ground-based gauge stations between 201 ...
DOI:
10.1016/j.jhydrol.2020.124707

18. Discrimination of soil losses between ridge and furrow in longitudinal ridge-tillage under simulated upslope inflow and rainfall

Author:
Wang, Lei; Zheng, Fenli; Zhang, Xunchang J.; Wilson, Glenn V.; Qin, Chao; He, Chao; Liu, Gang; Zhang, Jiaqiong
Source:
Soil & tillage research 2020 v.198 pp. 104541
ISSN:
0167-1987
Subject:
topographic slope,   etc   ; Mollisols; agricultural runoff; furrows; photogrammetry; rain; rain intensity; ridge tillage; sediments; soil erosion; synergism;     Show all 11 Subjects
Abstract:
... Longitudinal ridge-tillage greatly enhances hillslope soil erosion due to increased flow concentration in furrows and sediment delivery from ridge sideslopes. Currently, contributions of upslope inflow and rainfall to soil loss and identification of sediment sources in a ridge-furrow system are still unclear. A set of experiments on 10-m long, 2-m wide field runoff plots at a 5° slope gradient wer ...
DOI:
10.1016/j.still.2019.104541

19. Flow resistance of overland flow on a smooth bed under simulated rainfall

Author:
Nicosia, Alessio; Di Stefano, Costanza; Palmeri, Vincenzo; Pampalone, Vincenzo; Ferro, Vito
Source:
Catena 2020 v.187 pp. 104351
ISSN:
0341-8162
Subject:
topographic slope,   etc   ; Reynolds number; equations; flow resistance; friction; overland flow; rain; rain intensity; rainfall simulation;     Show all 9 Subjects
Abstract:
... In this paper a recently theoretically deduced flow resistance equation, based on a power-velocity profile, was tested using laboratory measurements by Yoon and Wenzel for an overland flow on a smooth bed under rainfall. These measurements of the Darcy-Weisbach friction factor, corresponding to a wide range of the flow Reynolds number (191–5700), were carried out for an overland flow under a simul ...
DOI:
10.1016/j.catena.2019.104351

20. Influence of digital elevation models on the simulation of rainfall-induced landslides in the hillslopes of Guwahati, India

Author:
Sarma, Chiranjib Prasad; Dey, Arindam; Krishna, A. Murali
Source:
Engineering geology 2020 v.268 pp. 105523
ISSN:
0013-7952
Subject:
topographic slope,   etc   ; digital elevation models; drainage; geographic information systems; landslides; lidar; prediction; rain; surveys; India;     Show all 10 Subjects
Abstract:
... Topographic input parameters such as slope, curvature, and drainage area are derived from a Digital Elevation Model (DEM) representing the spatial elevation, and are widely used as important sources of geospatial information. Based on the chosen DEM and its derived paramters, physically based GIS models, such as TRIGRS, can compute the transient degradation of the hillslope stability due to rainfa ...
DOI:
10.1016/j.enggeo.2020.105523