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Geosciences, Volume 10, Issue 3

2020 March - 29 articles

Cover Story: Egypt is the land of dunes. Investigations of satellite images and field measurements show that nearly all dune forms can be observed. Longitudinal dunes and barchans prevail. The study reviews the state of knowledge around distribution, sizes, dynamics, and ages of all six sand seas (large areas with more than 50% dune coverage) and ten dune fields in Egypt. Regarding the sparse chronological data to date, for a reasonable estimation of future sand mobility in the course of global climate change, further data are essential. Finally, further studies concerning sand mobility, local wind systems, and land use are needed. View this paper
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Articles (29)

  • Article
  • Open Access
25 Citations
13,247 Views
26 Pages

Earthquakes can influence flood hazards by altering the flux, volumes, and distributions of surface and/or subsurface waters and causing physical changes to natural and engineered environments (e.g., elevation, topographic relief, permeability) that...

  • Article
  • Open Access
7 Citations
4,563 Views
15 Pages

A site located on the island of Brač is known in history for world-famous architectural stone and stone mining, dating all the way back to ancient Greek and Roman times. The most famous building constructed from the stone from Brač is the Diocletian...

  • Article
  • Open Access
10 Citations
4,597 Views
28 Pages

The changes in the seismic signals generated by avalanches recorded at three sites along a path at the Vallée de la Sionne (VdlS) experimental site are presented. We discuss and correlate the differences in the duration, signal amplitudes, and...

  • Article
  • Open Access
3 Citations
2,704 Views
21 Pages

In one of their recent works, the authors examined parametrically the effect of targeted field investigation on reducing statistical uncertainty in active state analysis of earth retaining structures based on 2165 different cases for each of the slid...

  • Article
  • Open Access
12 Citations
8,706 Views
24 Pages

A New Landslide Inventory for the Armenian Lesser Caucasus: Slope Failure Morphologies and Seismotectonic Influences on Large Landslides

  • Alice O. Matossian,
  • Hayk Baghdasaryan,
  • Ara Avagyan,
  • Hayk Igityan,
  • Mikayel Gevorgyan and
  • Hans-Balder Havenith

Landslide hazard analyses in Armenia require consideration of the seismotectonic context of the Lesser Caucasus. As it is located near the center of the Arab-Eurasian collision, the Lesser Caucasus is characterized by its complex geology, dense fault...

  • Article
  • Open Access
118 Citations
10,512 Views
18 Pages

A Machine Learning-Based Approach for Wildfire Susceptibility Mapping. The Case Study of the Liguria Region in Italy

  • Marj Tonini,
  • Mirko D’Andrea,
  • Guido Biondi,
  • Silvia Degli Esposti,
  • Andrea Trucchia and
  • Paolo Fiorucci

Wildfire susceptibility maps display the spatial probability of an area to burn in the future, based solely on the intrinsic local proprieties of a site. Current studies in this field often rely on statistical models, often improved by expert knowled...

  • Article
  • Open Access
51 Citations
7,340 Views
19 Pages

Fire scar detection through orbital data can be done using specific techniques, such as the use of spectral indices like the normalized burn ratio (NBR), which are designed to help identify burnt areas as they have typical spectral responses. This pa...

  • Article
  • Open Access
2 Citations
5,998 Views
15 Pages

Mineralogical and Chemical Investigations of the Amguid Crater (Algeria): Is there Evidence on an Impact Origin?

  • Gian Paolo Sighinolfi,
  • Maurizio Barbieri,
  • Daniele Brunelli and
  • Romano Serra

Mineralogical and chemical investigations were carried out on intra-craterial bedrocks (Lower Devonian sandstone) and regolithic residual soil deposits present around the Amguid structure, to discuss the hypothesis of its formation through a relative...

  • Article
  • Open Access
8 Citations
4,374 Views
11 Pages

Seismic Exploration of the Deep Structure and Seismogenic Faults in the Ligurian Sea by Joint Multi Channel and Ocean Bottom Seismic Acquisitions: Preliminary Results of the SEFASILS Cruise

  • Jean-Xavier Dessa,
  • Marie-Odile Beslier,
  • Laure Schenini,
  • Nicolas Chamot-Rooke,
  • Nicolà Corradi,
  • Matthias Delescluse,
  • Jacques Déverchère,
  • Christophe Larroque,
  • Serge Sambolian and
  • Laure Combe
  • + 6 authors

The north Ligurian margin is a complex geological area in many ways. It has witnessed several phases of highly contrasting deformation styles, at both crustal scale and that of shallower cover tectonics, simultaneously or in quick succession, and wit...

  • Article
  • Open Access
14 Citations
6,325 Views
17 Pages

Assessment of Geological, Hydrogeological and Geotechnical Characteristics of a Proposed Waste Disposal Site: A Case Study in Khon Kaen, Thailand

  • Rungroj Arjwech,
  • Kittipong Somchat,
  • Potpreecha Pondthai,
  • Mark Everett,
  • Marcia Schulmeister and
  • Sakhon Saengchomphu

Occasionally, a selected site suitable for landfill construction is severely protested against by locals. This issue can cause the proposed landfill to be relocated to an environmentally sensitive area. The proposed Khon Kaen waste disposal site has...

  • Article
  • Open Access
2 Citations
3,401 Views
13 Pages

A pile foundation in a permafrost region is in a negative-temperature environment, so concrete is affected by the negative temperature of the surrounding soil. It not only affects the formation of concrete strength but also leads to engineering quali...

  • Article
  • Open Access
17 Citations
4,105 Views
13 Pages

Hydraulic Conductivity and Pore Water Pressures in a Clayey Landslide: Experimental Data

  • Caterina Di Maio,
  • Jacopo De Rosa,
  • Roberto Vassallo,
  • Roberto Coviello and
  • Giuseppe Macchia

To analyze the response to hydrological conditions of an instable slope in a structurally complex clay formation, the hydraulic conductivity of the subsoil was estimated and pore water pressures were monitored. Two types of field tests were carried o...

  • Review
  • Open Access
29 Citations
20,434 Views
32 Pages

Sand Seas and Dune Fields of Egypt

  • Olaf Bubenzer,
  • Nabil S. Embabi and
  • Mahmoud M. Ashour

The article reviews the state of knowledge about distribution, sizes, dynamics, and ages of all sand seas (N = 6) and dune fields (N = 10) in Egypt (1,001,450 km2). However, chronological data (Optically Stimulated Luminescence, Thermoluminescence),...

  • Review
  • Open Access
13 Citations
6,000 Views
16 Pages

Hydroacoustic Mapping of Geogenic Hard Substrates: Challenges and Review of German Approaches

  • Svenja Papenmeier,
  • Alexander Darr,
  • Peter Feldens and
  • Rune Michaelis

Subtidal hard substrate habitats are unique habitats in the marine environment. They provide crucial ecosystem services that are socially relevant, such as water clearance or as nursery space for fishes. With increasing marine usage and changing envi...

  • Article
  • Open Access
26 Citations
4,408 Views
21 Pages

Characteristics of Surface Deformation in Lanzhou with Sentinel-1A TOPS

  • Yi He,
  • Wenhui Wang,
  • Haowen Yan,
  • Lifeng Zhang,
  • Youdong Chen and
  • Shuwen Yang

While surface deformations and their impact on buildings have been observed in the city of Lanzhou, it is difficult to find studies of surface deformation and the influential factors in the recent decades. This study was designed to detect the spatia...

  • Article
  • Open Access
4 Citations
4,228 Views
17 Pages

This paper presents an assessment of the potential usefulness of the Ground Conductivity Meter (GCM) method to locate seepage pathways in the Maniow levee zone near Kraków, Poland. We have realized this aim through geological recognition of th...

  • Article
  • Open Access
71 Citations
11,687 Views
29 Pages

Evaluating Rockfall Risk: Some Critical Aspects

  • Claudio Scavia,
  • Monica Barbero,
  • Marta Castelli,
  • Maddalena Marchelli,
  • Daniele Peila,
  • Giulia Torsello and
  • Gianmarco Vallero

Rockfalls evolve rapidly and unpredictably in mountain environments and can cause considerable losses to human societies, structures, economical activities, and also natural and historical heritage. Rockfall risk analyses are complex and multi-scale...

  • Comment
  • Open Access
5 Citations
3,529 Views
21 Pages

This note first summarizes the history of the manuscript “On a Continuum Model for Avalanche Flow and Its Simplified Variants” by Grigorian and Ostroumov—published in this Special Issue—since the early 1990s and explains the g...

  • Article
  • Open Access
24 Citations
9,384 Views
17 Pages

Soils are naturally occurring materials that carry loads of civil engineering structures including roads and buildings. However, not all natural soils are suitable for such uses due to limited strength and instability under varying environmental cond...

  • Article
  • Open Access
4 Citations
6,318 Views
27 Pages

Regional surface and subsurface mapping of the front range of the Oman Mountains, Salakh Arch’s fold-and-thrust belt, is conducted to understand the timing and nature of its deformation and to analyze the main controls on its position, geometry...

  • Article
  • Open Access
14 Citations
5,144 Views
21 Pages

Morphometric Characteristics, Shapes and Provenance of Holocene Pebbles from the Sava River Gravels (Zagreb, Croatia)

  • Uroš Barudžija,
  • Josipa Velić,
  • Tomislav Malvić,
  • Neven Trenc and
  • Nikolina Matovinović Božinović

Morphometric analysis of Holocene pebbles from Sava River gravel in NW Croatia revealed shape distributions as observed along a 30 km long watercourse. Limestones, dolomites, and sandstones were identified as the major (>4%) and effusive magmatics...

  • Review
  • Open Access
12 Citations
4,128 Views
13 Pages

This work presents a review of recent publications, with publication date between 2017 and 2019, with information on the relation between rock characteristics and the effects of diverse agents associated with alteration of stone materials in the buil...

  • Article
  • Open Access
25 Citations
5,322 Views
22 Pages

Here we present relative abundances of planktic foraminifera that span the Early Eocene Climatic Optimum (EECO) at Ocean Drilling Program (ODP) Site 1258 in the western equatorial Atlantic. The EECO (~53.3−49.1 Ma) represents peak Cenozoic warm...

  • Article
  • Open Access
22 Citations
5,064 Views
22 Pages

This study aims at mapping soil erosion caused by water in the Candelaro river basin, Apulia region, Italy, using the G2 erosion model. The G2 model can provide erosion maps and statistical figures at month-time intervals, by applying non data-demand...

  • Article
  • Open Access
15 Citations
4,340 Views
17 Pages

Seismic and Rainfall Induced Displacements of an Existing Landslide: Findings from the Continuous Monitoring

  • Paolo Ruggeri,
  • Viviene M. E. Fruzzetti,
  • Antonio Ferretti and
  • Giuseppe Scarpelli

“La Sorbella” is a deep-seated existing landslide in a Miocene clayey formation located in central Italy. Given the interaction with a national road, this landslide has been monitored for a long time with inclinometers and hydraulic piezo...

  • Article
  • Open Access
6 Citations
4,730 Views
14 Pages

Loess-paleosol series are well preserved in the south part of the Russian Plain. However, these sequences have a low number of studies on their organic matter, such as researches of isotope composition, n-alkane and other biomarkers. Thus, the purpos...

  • Article
  • Open Access
10 Citations
5,254 Views
19 Pages

Preliminary Evidence for the Role Played by South Westerly Wind Strength on the Marine Diatom Content of an Antarctic Peninsula Ice Core (1980–2010)

  • Claire S. Allen,
  • Elizabeth R. Thomas,
  • Hilary Blagbrough,
  • Dieter R. Tetzner,
  • Richard A. Warren,
  • Emily C. Ludlow and
  • Thomas J. Bracegirdle

Winds in the Southern Ocean drive exchanges of heat and carbon dioxide between the ocean and atmosphere. Wind dynamics also explain the dominant patterns of both basal and surface melting of glaciers and ice shelves in the Amundsen and Bellingshausen...

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Geosciences - ISSN 2076-3263