Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
3.7
3.9
Journals
Land
Special Issues
New Perspectives for the Monitoring and Early Detection of Geohazards
share announcement

New Perspectives for the Monitoring and Early Detection of Geohazards

A special issue of Land (ISSN 2073-445X). This special issue belongs to the section "Land – Observation and Monitoring".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 6332

Special Issue Editors

Dr. Nikolaos Depountis

E-Mail Website
Guest Editor
Department of Geology, School of Natural Sciences, University of Patras, 26504 Patras, Greece
Interests: geotechnical investigations; soil and coastal erosion modelling; rock mechanics; landslide monitoring; design of early-warning systems; land use planning
Dr. Maria Ferentinou

E-Mail Website
Guest Editor
School of Civil Engineering and Built Environment, Liverpool John Moores University, Liverpool L3 3AF, UK
Interests: geohazard and risk assessment; landslide susceptibility assessment; slope stability; rock engineering systems; artificial intelligence and data mining techniques in geotechnics; monitoring of ground deformation
Special Issues, Collections and Topics in MDPI journals
Dr. Vassilis Marinos

E-Mail Website
Guest Editor
Geotechnical Department, School of Civil Engineering, National Technical University of Athens (NTUA), 157 80 Athens, Greece‎
Interests: tunnelling; rockfall analysis; geohazards correlated to natural gas pipelines; dam foundation; rock mass structural analysis; landslide hazard and stability analysis and monitoring
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Constantinos Loupasakis

E-Mail Website
Guest Editor
Department of Geological Sciences, School of Mining and Metallurgical Engineering, The National Technical University of Athens (NTUA), Zografou Campus, GR-157 80 Athens, Greece
Interests: geohazard monitoring and modeling (landslides, land subsidence, erosion, floods); geotechnical engineering; engineering geology; computational geotechnical engineering; remote sensing data interpretation; natural hazards under climate change impacts; monitoring and protection of monuments
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Geological hazards are the results of natural, active geologic processes. They indicate geomorphological, geological, environmental processes and phenomena that are potentially dangerous or pose a threat to people, infrastructures, and the environment. There are several types of geohazards, natural or human-induced, and all of them have the potential to be disastrous for the natural and built environment, or may be occurring naturally in remote areas with no associated risk. Geohazards can develop quickly in response to the processes that drive them, or may evolve over the course of tens, hundreds, or thousands of years to develop to a point where they pose a threat to the affected communities and the natural environment. Their manifestation is an indication of the continuous dynamic evolution of Earth, and lately because of the climate emergency the frequency has been higher and the magnitude and consequences more severe. Geohazards include volcanic eruptions, earthquakes, landslides, mudslides, debris flows, rockfalls, avalanches, glacial surges and outburst floods, liquefaction, tsunamis, sinkholes and subsidence and other land collapses due to thawing permafrost, which can now be monitored with a greater efficiency due to the rapid development of ground-based, airborne and satellite Earth observation methods.

The goal of the proposed Special Issue is to present recent developments on the monitoring and early detection of geohazards, with emphasis on any type of ground movement or deformation. Towards this aim, research articles and critical problems associated with field implementation, monitoring, and early warning systems will be presented and thoroughly discussed.

We welcome works from interdisciplinary fields, which are essential for the development of new methods of monitoring and detecting any types of hazards. The manuscripts may be in the form of research articles, case studies, modelling, and reviews from anywhere in the world. More specifically, we are interested in contributions related to:

  • Advanced site investigation techniques for geohazards;
  • Monitoring of ground and earth movements;
  • Infrastructure monitoring related with ground failure;
  • Analysis and mitigation of geohazards;
  • Recent advances in the early detection of geohazards;
  • New challenges in landslide and rock fall monitoring and mitigation.

Dr. Nikolaos Depountis
Dr. Maria Ferentinou
Dr. Vassilis Marinos
Prof. Dr. Constantinos Loupasakis
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Land is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • landslides
  • geohazards
  • liquefaction
  • monitoring
  • early warning
  • mitigation
  • land subsidence
  • tsunamis
  • remote sensing
  • debris flow
  • ground failure

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

22 pages, 25990 KiB  
Article
Recommendations for Landslide Early Warning Systems in Informal Settlements Based on a Case Study in Medellín, Colombia
by Moritz Gamperl, John Singer, Carolina Garcia-Londoño, Lisa Seiler, Julián Castañeda, David Cerón-Hernandez and Kurosch Thuro
Land 2023, 12(7), 1451; https://doi.org/10.3390/land12071451 - 20 Jul 2023
Viewed by 1233
Abstract
Fatalities from landslides are rising worldwide, especially in cities in mountainous regions, which often expand into the steep slopes surrounding them. For residents, often those living in poor neighborhoods and informal settlements, integrated landslide early warning systems (LEWS) can be a viable solution, [...] Read more.
Fatalities from landslides are rising worldwide, especially in cities in mountainous regions, which often expand into the steep slopes surrounding them. For residents, often those living in poor neighborhoods and informal settlements, integrated landslide early warning systems (LEWS) can be a viable solution, if they are affordable and easily replicable. We developed a LEWS in Medellín, Colombia, which can be applied in such semi-urban situations. All the components of the LEWS, from hazard and risk assessment, to the monitoring system and the reaction capacity, were developed with and supported by all local stakeholders, including local authorities, agencies, NGO’s, and especially the local community, in order to build trust. It was well integrated into the social structure of the neighborhood, while still delivering precise and dense deformation and trigger measurements. A prototype was built and installed in a neighborhood in Medellín in 2022, comprising a dense network of line and point measurements and gateways. The first data from the measurement system are now available and allow us to define initial thresholds, while more data are being collected to allow for automatic early warning in the future. All the newly developed knowledge, from sensor hardware and software to installation manuals, has been compiled on a wiki-page, to facilitate replication by people in other parts of the world. According to our experience of the installation, we give recommendations for the implementation of LEWSs in similar areas, which can hopefully stimulate a lively exchange between researchers and other stakeholders who want to use, modify, and replicate our system. Full article
(This article belongs to the Special Issue New Perspectives for the Monitoring and Early Detection of Geohazards)
►▼ Show Figures

Figure 1

29 pages, 10678 KiB  
Article
A Comparative Analysis for Defining the Sliding Surface and Internal Structure in an Active Landslide Using the HVSR Passive Geophysical Technique in Pujilí (Cotopaxi), Ecuador
by Olegario Alonso-Pandavenes, Daniela Bernal, Francisco Javier Torrijo and Julio Garzón-Roca
Land 2023, 12(5), 961; https://doi.org/10.3390/land12050961 - 26 Apr 2023
Cited by 3 | Viewed by 1186
Abstract
Geophysical techniques were employed to analyze one of the landslides that affected the main access road to Pujilí (Ecuador). A passive seismic technique was utilized to test a total of 70 horizontal to vertical spectral ratio (HVSR) points, complemented by an active seismic-refraction [...] Read more.
Geophysical techniques were employed to analyze one of the landslides that affected the main access road to Pujilí (Ecuador). A passive seismic technique was utilized to test a total of 70 horizontal to vertical spectral ratio (HVSR) points, complemented by an active seismic-refraction profile and a multichannel analysis of surface waves (MASW) survey. The results from the active geophysical surveys facilitated the determination of the shear-wave-velocity value for the surface materials that were in motion. However, the HVSR provided the fundamental frequency fo and amplification Ao values of the ground. The Nakamura (1989) relationship was applied to obtain the thickness of the sediments over a compact material from the fundamental frequency of the terrain in a two-layer model. Additionally, constrained models of the shear-wave velocity (Vs) distribution in the landslide area, obtained from the active seismic surveys, were used to invert the ellipticity curves. The results from this inversion were compared with those obtained by applying the Nakamura equation. The landslide-rupture surface was delineated for each type of analysis, which verified the correlation and minimal differences between the results of the three proposed studies, thus validating the procedure. The directivity of the microtremor HVSR signals was also analyzed, demonstrating a relationship with the internal structure of the sliding material. Furthermore, the ability to slide concerning the Kg parameter (vulnerability index, Nakamura, 1989) was studied. The usefulness of the directivity analysis in defining the internal structures in landslide materials and in determining the areas with the most significant instability was demonstrated. Overall, the HVSR is considered valuable when conducting early landslide studies and is helpful in determining the rupture plane while remaining a simple, fast, and economical technique. Full article
(This article belongs to the Special Issue New Perspectives for the Monitoring and Early Detection of Geohazards)
►▼ Show Figures

Figure 1

20 pages, 8007 KiB  
Article
Debris Flow Gully Classification and Susceptibility Assessment Model Construction
by Deqiang Cheng, Javed Iqbal and Chunliu Gao
Land 2023, 12(3), 571; https://doi.org/10.3390/land12030571 - 26 Feb 2023
Viewed by 1547
Abstract
The location of debris flow occurring in a gully determines the observable differences in its formation, evolution and effects. In this piece of research, we propose a new method for debris flow gully classification based on the locations of the debris flows occurring [...] Read more.
The location of debris flow occurring in a gully determines the observable differences in its formation, evolution and effects. In this piece of research, we propose a new method for debris flow gully classification based on the locations of the debris flows occurring in the gullies. It is termed the three-section method (TSM). It includes eight different types of gullies with different digital identifications (IDs) and susceptibility degrees (SDs). By taking the Jiangjia Gully (JJG), in Yunnan, China, as a case study site, the main gully and the sub-gullies at different levels were identified using a hydrological analysis method. Then, the gullies were divided into different types using the new classification TSM. The results show that there are seven different types of debris flow gullies in the JJG. The number of different types varied greatly in gullies at different levels. In particular, the topological diagram of debris flow gullies was drawn after simplifying the shape of the gullies, and it was a good way to understand the characteristics of debris flow gullies. Finally, the relationships were explored between the hypsometric integrals (HIs), surface exposures (SEs) and susceptibility degrees (SDs), and a new calculation model construction method for determining the degree of debris flow susceptibility was proposed. This model, using the above method, can not only be used to calculate the SDs of debris flows in the gullies, but can also be instrumental in pointing out the approximate locations of the debris flow commonly and easily occurring in the gullies. We hope that our research can provide a new concept for the assessment of debris flow susceptibility. Full article
(This article belongs to the Special Issue New Perspectives for the Monitoring and Early Detection of Geohazards)
►▼ Show Figures

Figure 1

23 pages, 11593 KiB  
Article
Rockfall Intensity under Seismic and Aseismic Conditions: The Case of Lefkada Island, Greece
by Aikaterini Servou, Nikolaos Vagenas, Nikolaos Depountis, Zafeiria Roumelioti, Efthimios Sokos and Nikolaos Sabatakakis
Land 2023, 12(1), 172; https://doi.org/10.3390/land12010172 - 04 Jan 2023
Cited by 1 | Viewed by 1576
Abstract
Rockfall analysis is a multiparametric procedure with many uncertainties and the outputs are largely dependent on some critical engineering geological parameters involved in the used simulation model. In this paper, three completely different limestone rock sequences, named Pantokratoras, Vigla, and Paxos limestones along [...] Read more.
Rockfall analysis is a multiparametric procedure with many uncertainties and the outputs are largely dependent on some critical engineering geological parameters involved in the used simulation model. In this paper, three completely different limestone rock sequences, named Pantokratoras, Vigla, and Paxos limestones along the western coastal slopes of Lefkada island, in Greece, are examined regarding their rockfall susceptibility as expressed by produced kinetic energy, under aseismic and seismic conditions. A rockfall inventory was prepared through detailed field measurements after the extensive rockfalls which were caused by the strong earthquake of November 2015, while engineering geological surveys were systematically conducted on the limestone rock masses. Two case scenarios were adopted for the rockfall simulations: one without the horizontal initial velocity of the detached rock boulder and the other with an estimated value obtained from the peak ground velocity (PGV) of the main seismic shock. Two-dimensional rockfall simulations were performed in selected cross-sections for each rock mass, and spatial distribution maps of the intensity (kinetic energy) were generated. A comparison of the maps has shown a strong maximum variation in the intensity levels among the three rock masses mainly due to the differential size of the detached boulders because of the inherent engineering geological characteristics of the rock masses. The results show that the earthquake ground velocity generally leads to a fluctuating change in the intensity values due to the trajectory shape and increases the rockfall magnitude as the main triggering factor. Full article
(This article belongs to the Special Issue New Perspectives for the Monitoring and Early Detection of Geohazards)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop