Rachid El Hamdouni

University of Granada | UGR · Department of Civil Engineering

Geomorphologic investigations were undertaken in the Kopongo region, located in the northwestern margin of the Congo craton. The study carry out on the Kopongo, a portion of the Cameroonian passive margin (3°53′–4°05′N, 10°06′–10°19′E), aims to examine the topographic and hydrographic anomalies through the use of geomorphic indices combined with ge...

Rockfall simulations constitute the first step toward hazard assessments and can guide future rockfall prevention efforts. In this work, we assess the impact of digital elevation model (DEM) resolution on the accuracy of numerical rockfall simulation outputs. For this purpose, we compared the simulation output obtained using 1 m, 2 m and 3 m resolu...

Landslide susceptibility maps (LSMs) rely on statistical association for weighting the impact of each predictive factor class. However, the effects of using different training datasets and causative factors combinations on the accuracy of the results are rarely discussed. Accordingly, we investigated the effects of training data and computation tec...

This research tests the application of GNSS and RPAS techniques to the spatiotemporal analysis of landslide dynamics. Our method began by establishing non-permanent GNSS networks on the slope surfaces to perform periodic measurements by differential GNSS. Similarly, RPAS flights were made to acquire high-resolution images, which were oriented and g...

Coastal landslides cause great economic damage to human installations along the Mediterranean shoreline. In the Alboran Sea, this phenomenon is very common and causes many problems for residential resorts and road infrastructures in coastal areas. In the last two decades, such slope instability processes were the subject of many studies, which empl...

This research tests the application of GNSS and RPAS techniques to the spatiotemporal analysis of landslide dynamics. Our method began by establishing non-permanent GNSS networks on the slope surfaces to perform periodic measurements by differential GNSS. Similarly, RPAS flights were made to acquire high-resolution images, which were oriented and g...

In this paper, a geotechnical characterization of the superficial formations surrounding the Marchica lagoon (Nador, NE of Morocco) is presented. Five zones that have similar geotechnical characteristics are identified, and for each zone, a geotechnical model has been built from the results of in situ and laboratory geotechnical tests. The barrier...

Landslide susceptibility indices were calculated and landslide susceptibility maps were generated for the Oudka, Morocco, study area using a geographic information system. The spatial database included current landslide location, topography, soil, hydrology, and lithology, and the eight factors related to landslides (elevation, slope, aspect, dista...

The Rif is among the areas of Morocco most susceptible to landslides, because of the existence of relatively young reliefs marked by a very important dynamics compared to other regions. These landslides are one of the most serious problems on many levels: social, economic and environmental. The increase in the frequency and impact of landslides ove...

The Costa Tropical in Granada Province, in Southern Spain, was intensively developed during the 1980s and 90s. A complex of several residential communities was built on the eastern slope of the coastal Cerro Gordo hill (Almuñécar), on the pre-existing Calaiza landslide. This was not identified in the preliminary technical studies, thus giving rise...

Landslide hazard in a region limited to data from a regional scale about triggering factors is assessed via cross tabulation between determining factors and landslides with recent activity. Firstly, landslide susceptibility was evaluated and validated through a bivariate statistical method between the previously identified stability conditioning fa...

This paper presents a review of the data acquisition procedures of geotechnical parameters for rock slope stability assessment and the proposal of some new improvements. For this purpose, a piece of research based on the slope mass rating classification system using close-range terrestrial digital photogrammetry (CR-TDP) has led to improvements in...

The Marrakech–Agadir highway crosses mountainous areas of the Western High Atlas of Morocco with a high risk of slope instability. The use of explosives as an excavation method, especially at kilometric point 33 on the Imintanout–Argana section, has triggered major ruptures. The regional geological setting, together with the lithological and struct...

In the procedures to minimize diachronic landslides, data on their temporal evolution and destructive capacities are necessary. For that purpose, remote-detection techniques proved to be highly useful for quantifying the ongoing change in the relief, as well as in comparisons between digital terrain models achieved by Light Detection and Ranging. T...

The Southern flank of Sierra Nevada and coastal Mediterranean areas of South Spain, in the Andalusian Granada Province, a high number of urban settlements and roads have been affected by landslides and instability problems since the fifties. In this period, a very quick economic development with an intense annual increase of touristic demand gave p...

Recent deformations in the area studied control structural expansions influenced by tectonic activities, causing transformations of geologic features and morphological landforms. The Tehran basin is located at the southern edge of the central Alborz and is the result of the Arabian- Eurasian convergence and clockwise rotation of the south Caspian b...

This paper presents a new, fast and economical method for digitizing a rock surface profile to determine its joint roughness coefficient (JRC) value (Barton and Choubey, Rock Mech Rock Eng 10:1–54, 1977) using a set of existing parameters, the appropriateness of which has been tested. The new procedure was applied to four rock road cuts in the Alpu...

In this work a methodology for preparing landslides susceptibility and hazard maps is presented, based in a bivariate analysis between past movements and determinant factors. The methodology for determining the susceptibility is an adaptation of the matrix method to a GIS, and it has been tested and validated in different zones and environments of...

In this work several techniques for the elaboration of landslides databases are compared. The used techniques are the digitalization on ortophotographies (monoplotting), the digitalization on aerial photographs and geometrical correction, the translate to a topographical map and digitalization, and, finally, the stereoplotting using digital photogr...

El objetivo del proyecto es la mejora del aprendizaje de la asignatura Mecánica del Suelo y Rocas. Geotecnia de 2º curso del Grado en Ingeniería Civil mediante la resolución de problemas y el uso de las NTIC. Se han realizado las siguientes tareas: 1. Revisión de información y formación, 2. Selección de un conjunto representativo de problemas demos...

Para facilitar el aprendizaje del alumnado, los profesores del Área de Ingeniería del Terreno del Departamento de Ingeniería Civil de la Universidad de Granada, dentro de su compromiso con la calidad, mejora e innovación docente, han venido proporcionando desde su constitución en la Universidad de Granada en 1989, y con anterioridad desde el inicio...

This paper presents a methodology for the stability analysis of cuts in rock slopes. A kinematic analysis of the different types of failure (planar, wedge, and toppling) is developed using GIS, following which a probabilistic analysis is made of the limit equilibrium in slopes where the conditions for kinematic failure are satisfied. The results we...

Granada and its metropolitan area lie on the eastern edge of a basin where the foothills rise into the adjacent Sierra Nevada (3,482 m). On the west the valley is bordered by several faulted, Quaternary-age alluvial fans and by dissected terraces of the Genil River. Landscape evolution from about Tortonian to Pleisto-cene time is reflected by relic...

estabilidad. Los datos del análisis reflejan que el 15% de la zona estudiada muestra una susceptibilidad a los movimientos de moderada a muy alta que, a su vez, coincide con lugares donde se encuentran la mayoría de las infraestructuras públicas de la región. Además, los valores registrados en la validación mediante el grado de ajuste están por enc...

The aim of this study is to improve a method to develop an integrated quantitative geomorphic analysis of tectonic activity around the Rudbar Lorestan dam site and powerhouse in the High Zagros Belt (HZB), southwest Iran, using several tectonic geomorphic indexes including stream length–gradient index (SL), drainage basin asymmetry (Af), hypsometri...

The temporal and spatial evolution of a landslide is a diachronic process which begins at a given moment in time, and attains a duration or degree of diachroneity, together with activity stages described by specific patterns of velocity, volume, and destruc-tive capacity. Monochronal landslides lead the displaced materials to reach, quickly (in few...

Landslide susceptibility is analysed in a semi-arid mountain environment, on the southern slope of Sierra Nevada. In a study area of 460 km 2, 252 landslides were inventoried, affecting 3.2% of the total surface area. These landslides were mainly slides and flows on phyllite, schist and marble units in the Inner Zone of the Betic Cordillera. The mo...

Using a GIS, this paper presents a methodology based on the results for the kinematic analysis of slope or road-cut stability for plane slides and wedges of rock massifs. Some of the data were derived from a Digital Elevation Model (DEM) while other data were compiled from statistical analyses of geotechnical and slope data measured on site, and st...

In this paper, ModelBuilderTM in ArcGIS (ESRI) has been applied to landslide-susceptibility analysis, mapping and validation. The models (scripts), available for direct downloading as an ArcGIS tool, allow landslide susceptibility to be computed in a given region, providing a landslide-susceptibility map, with the GIS matrix method, and ensuring a...

A Differential Interferometric SAR (DInSAR) analysis of terrain displacements in the province of Granada (southern Spain) is presented here for two different study zones. The first zone concerns the Guadalfeo River Basin, where abundant landslides and unstable slopes were previously identified and inventoried on a GIS application. However, no instr...

The Betic Cordillera includes a number of formations where marl and clay predominates.....

Landslide incidence in urban areas of the city of Granada, and main towns with more of 20.000 inhabitants in the province.....

In this work we present the first results of an analysis applied to detection of landslides features using remote sensing techniques in rock masses at the Betic Cordilleras (southern Spain). After geometric and radiometric corrections, several techniques are used to facilitate a first visual approach to landslide identification, from enhancement an...

This study proposes a method to determine zones gentler or steeper than the equilibrium slope angle based on rock mass strength (RMS) and to regionalize the parameters. The method was developed using GIS and applied to rock masses of the Alpujarride Complex (Granada, Spain). 41% of the natural slopes studied have angles lower than the equilibrium d...

We present a new method for evaluating relative active tectonics based on geomorphic indices useful in evaluating morphology and topography. Indices used include: stream length-gradient index (SL), drainage basin asymmetry (Af), hypsometric integral (Hi), ratio of valley-floor width to valley height (Vf), index of drainage basin shape (Bs), and ind...

A help support for users of the model (script) for the analysis, mapping and valida-tion of landslide susceptibility by means of the GIS matrix model (copyright code 200799900362531) is here presented. This model was developed in the Environmen-tal Researches Group: Geological Hazards and Terrain Engineering (RNM 121) of the University of Granada (...

This work presents the results of applying the matrix method in a Geographic Information System (GIS) to the drawing of maps of susceptibility to slope movements in different sectors of the Betic Cordillera (southern Spain). In addition, the susceptibility models built by the matrix method were compared with a multivariate statistical method, and t...

A series of models for the analysis of landslide susceptibility developed using Mod-elBuilder in ArcGIS are here presented. These models permit not only the calculation of landslide susceptibility levels of terrain units but also the final validation of the ob-tained landslide susceptibility maps and its availability to be downloaded as ArcGIS tool...

In this work several techniques for the elaboration of landslides databases are compared. The used techniques are the digitalization on ortophotographies (monoplotting), the digitalization on aerial photographs and geometrical correction, the translate to a topographical map and digitalization, and, finally, the stereoplotting using digital photogr...

IAEG Commission No. 1—Engineering Geological Maps—is developing a guide to hazard maps. Scientists from 17 countries have participated. This paper is one of a series that presents the results of that work. It provides a general review of GIS landslide mapping techniques and basic concepts of landslide mapping. Three groups of maps are considered: m...

First results obtained using DInSAR techniques are here presented showing low to very low velocity of two deep seated planar slides on metamorphic rocks of the Alpujarride Complex are presented. The slides were considerable inactive after field and aerial photography survey along the last ten years, despite the observation of fresh geomorphic featu...

In the SW border of Sierra Nevada (Granada, Spain) metamorphic materials of the Alpujarride and Nevado-Filabride Complexes are cropping out as also Neogene and Quaternary post-orogenic deposits. Landslides of different types are abundant and damages to local and regional roads and other infrastructures, villages, cultivations and private properties...

En este trabajo se describen los resultados obtenidos de la aplicación del método de la matriz en un SIG a la elaboración de mapas de susceptibilidad a los movimientos de ladera en diversos sectores de la Cordillera Bética. Igualmente se ofrecen datos obtenidos sobre su utilidad como mapas previsores de zonas inestables. La validación de la utilida...

Desde 1989 el Area de Ingeniería del Terreno de la Universidad de Granada ha venido proporcionando los protocolos para la realización de prácticas y ensayos de mecánica de suelos a los alumnos de las asignaturas que requieren tales contenidos. Las asignaturas interesadas son: ETS Ingenieros de Caminos, Canales y Puertos: Mecánica de Suelos y Rocas...

Diseño gráfico de un mapa de susceptibilidad a los movimientos de ladera Los mapas de susceptibilidad a los movimientos de ladera son una herramienta muy útil para la previsión y prevención de este fenómeno que, aunque poco espectacular, constituye uno de los procesos de riesgos que mayores costos suponen a largo plazo en España. Las metodologías m...

En este trabajo se describe una metodología para la elaboración de mapas de susceptibilidad a los movimientos de ladera así como para comprobar su utilidad como mapas previsores de zonas inestables. Los mapas de susceptibilidad se basan en el método de la matriz que consiste en establecer un índice de inestabilidad en una determinada zona, para cad...

This article presents a method to map landslide susceptibility in rock massifs using Geographical Information Systems (GIS). The method is based on making an inventory of rupture zones of different types of slope movements and then analysing the bivariate correlation of these with the factors that determine instability. After determining the factor...

This article presents a method to map landslide susceptibility in rock massifs using Geographical Information Systems (GIS). The method is based on making an inventory of rupture zones of different types of slope movements and then analysing the bivariate correlation of these with the factors that determine instability. After determining the factor...

In order to characterise the influence of the heavyrains on the observed landslides during the 1996–1997hydrological cycle, rainfall records for the last 100years are analysed from 104 stations in easternAndalusia. Regarding the amounts of rain recordedbetween October 1996 and March 1997 in the 104stations studied, 31 presented new all-time records...

In this study the reliability and usefulness of a methodology for landslide susceptibility mapping is analyzed by means of different statistical coefficients. The study area lies at the confluen¬ce of the southern Spanish provinces of Cordoba, Granada and Malaga, and covers an area of approximately 503 km2. Most of the geological outcrops fall with...

A methodology is proposed for mapping susceptibility to landsliding and validating the results. Heavy rains in late 1996 and early 1997 led to a large number of landslids in the Rute sector (Córdoba, Southern Spain), where landslide susceptibility mapping had previously been carried out using a ‘matrix’ method developed with a Geographical Informat...

After a period of years with annual average amount of rainfall below the long term annual average during which few cases of naturally triggered landslides were recorded, the rainy season of 1996/97 gave place to new historical records in wide areas of the Betic Cordillera (Southern Spain). These heavy rains led to partial reactivation of many old l...

A digital elevation model of zones of the Contraviesa and Lújar Sierras is analysed by means of GIS and the introduction of vectorial data sets.

El objetivo de este trabajo es proponer una metodología para la elaboración de mapas de susceptibilidad a los movimientos de ladera así como para la comprobación de su utilidad. En el sector de estudio (Hoja 1007 -Rute- del Mapa Topográfico Nacional) se elaboró el mapa de susceptibilidad a los movimientos de ladera con el denominado método de la ma...

A new era with GIS and remote sensing techniques should be followed by a better compiling of the landslides hazard maps, in order to its general acceptation for civil engineering, land-use planning , insurance and mortgage uses. Considering data arising with landslides activity and degree of development a better zonation of the landslide hazard cou...

An inventory of 215 landslides affecting the Albuñuelas river basin, at the south of the Granada province (Spain), is presented. Some of the main features of the inventoried landslides types and its determining factors such as lithology, slope angle, slope elevation and aspect are described. Then a statistical analysis of its relationships with the...