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GeoHazards, Volume 6, Issue 4

2025 December - 27 articles

Cover Story: The seismic sequence recorded in Santorini during January–February 2025 is represented by the spatial distribution and magnitudes of seismic events, highlighting active structures in the region. The study investigates the focal mechanisms of seismicity and the distinction between tectonic and volcanic origins. The visualization of seismic activity provides critical knowledge about the contemporary geodynamic behavior of the South Aegean volcanic arc. View this paper
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Articles (27)

  • Article
  • Open Access
1,704 Views
24 Pages

17 December 2025

Drought remains one of the most damaging natural hazards to agricultural production and is projected to continue posing substantial risks to food security in the future, particularly in major rice-growing regions. Based on the RCP4.5 and RCP8.5 scena...

  • Review
  • Open Access
2,348 Views
14 Pages

17 December 2025

On 19 December 2015 and 21 February 2017, Longyearbyen was hit by major avalanches from the steep hillside of the mountain Sukkertoppen. In this article, we specifically consider the 2015 avalanche that destroyed eleven houses and buried nine people;...

(This article belongs to the Topic Natural Hazards and Environmental Challenges in the Anthropocene Age, 2nd Edition)
  • Article
  • Open Access
1 Citations
1,288 Views
21 Pages

Monitoring and Prediction of Differential Settlement of Ultra-High Voltage Transmission Towers in Goaf Areas

  • Yi Zhou,
  • Ying Jing,
  • Yuesong Zheng,
  • Laizhong Ding and ,
  • Zhiyao Mai,
  • Yaxing Guo,
  • Dongya Wu and
  • Zhengxi Wang
  • + 3 authors+ 0 author

16 December 2025

Critical transmission lines frequently traverse geologically complex mountainous regions, where harsh environments and variable climatic conditions pose significant geohazard risks. Utilizing 163 Sentinel-1A scenes (January 2018 to October 2023), we...

  • Article
  • Open Access
2 Citations
1,579 Views
14 Pages

15 December 2025

Modern statistical techniques enable quantitative characterisation of seismic activity. Analysis of the 2011 Tohoku megathrust earthquake revealed clear precursory signals: shortened inter-event intervals, increased magnitude scale (σ), and a p...

  • Article
  • Open Access
2 Citations
3,681 Views
25 Pages

12 December 2025

During January–February 2025, the Santorini volcanic complex experienced intense seismic activity, increasing interest and concern regarding the possible reactivation of the magmatic system. This study investigates the spatial and magnitude dis...

  • Article
  • Open Access
1 Citations
5,260 Views
20 Pages

Soil Liquefaction in Sarangani Peninsula, Philippines Triggered by the 17 November 2023 Magnitude 6.8 Earthquake

  • Daniel Jose L. Buhay,
  • Bianca Dorothy B. Brusas,
  • John Karl A. Marquez,
  • Paulo P. Dajao and ,
  • Robelyn Z. Mangahas-Flores,
  • Nicole Jean L. Mercado,
  • Oliver Paul C. Halasan,
  • Hazel Andrea L. Vidal and
  • Carlos Jose Francis C. Manlapat
  • + 4 authors+ 0 author

12 December 2025

The 17 November 2023 MW 6.8 earthquake located offshore of Southern Mindanao, Philippines, triggered soil liquefaction along the lowlands of the Sarangani Peninsula. Detailed mapping, geomorphological interpretations, geophysical surveys, comparison...

(This article belongs to the Special Issue Seismological Research and Seismic Hazard & Risk Assessments)
  • Article
  • Open Access
1 Citations
2,571 Views
28 Pages

Agricultural Drought Hazard Using Satellite-Based Indices for Drought Risk Mapping in Koel River Basin (India) Through Geospatial Technologies

  • Stuti Chaudhary,
  • Arvind Chandra Pandey,
  • Chandra Shekhar Dwivedi,
  • Bikash Ranjan Parida and
  • Navneet Kumar

21 November 2025

This present study demonstrates the assessment of agricultural drought hazard based on satellite indices for drought risk mapping in part of the South Koel river basin (India) with coverage of (7261 km2). Satellite-based drought indices and NDVI anom...

  • Article
  • Open Access
2,274 Views
24 Pages

10 November 2025

The Late Holocene flood history of the Cauvery River floodplain in the Poompuhar region was reconstructed using a multiproxy sedimentological approach applied to three trench cores. Lithostratigraphy, loss on ignition (LOI), magnetic susceptibility (...

(This article belongs to the Topic Earth Observation Systems in Geology Mass Identification, Investigation and Inventory Mapping)
  • Article
  • Open Access
2 Citations
2,392 Views
38 Pages

This article proposes a novel methodology based on the 2D hydraulic model of the HEC-RAS software, with a stepped ascending hydrograph that allows determining the maximum capacities of the channel (value at which overflow occurs), identifying potenti...

  • Brief Report
  • Open Access
1 Citations
2,980 Views
6 Pages

The Santorini volcano in the South Aegean Volcanic Arc is of great scientific importance. Knowledge of historical eruptions is valuable for better understanding the volcanic cycle and for improved hazard assessments. One of the little-known historica...

  • Article
  • Open Access
1 Citations
2,358 Views
21 Pages

Geohazard Assessment of Historic Chalk Cavity Collapses in Aleppo, Syria

  • Alaa Kourdey,
  • Omar Hamza and
  • Hamzah M. B. Al-Hashemi

Over the past five decades, the Tallet Alsauda district of Aleppo (Syria) has experienced multiple catastrophic collapses, attributed to a network of subsurface chalk cavities formed through historic quarrying and possible natural karstification. Yet...

  • Article
  • Open Access
2,082 Views
21 Pages

The Longshou Shan area is located on the northeastern margin of the Tibetan Plateau in northwest China. The study area is located where the sinistral Altyn Tagh and Haiyuan Faults overlap and the Qilian Shan thrust fault systems in the northeastern K...

  • Article
  • Open Access
1 Citations
2,862 Views
40 Pages

Assessing Geological Hazards in a Changing World Through Regional Multidisciplinary Approaches to European Glacial Lakes (Northern Pyrenees, Northern and Western Alps)

  • Emmanuel Chapron,
  • Thierry Courp,
  • Pieter van Beek,
  • Kazuyo Tachikawa and ,
  • Guillaume Jouve,
  • Léo Chassiot,
  • Didier Jézéquel,
  • Patrick Lajeunesse,
  • Thomas Zambardi and
  • Edouard Bard
  • + 5 authors+ 0 author

This study combines a multidisciplinary approach to Pyrenean and Alpine glacial lakes to characterize the sensitivity of Late Glacial to Holocene subaquatic flood deposits in deltaic environments to slope failures triggered either by earthquakes, roc...

  • Article
  • Open Access
2 Citations
2,889 Views
14 Pages

Identifying landslide boundaries and morphological features using traditional methods is labor-intensive, costly, and often limited—especially in areas altered by human activity or covered with dense vegetation. In such cases, modern remote sen...

(This article belongs to the Topic Remote Sensing and Geological Disasters)
  • Article
  • Open Access
1 Citations
2,408 Views
19 Pages

Geospatial Analysis of Soil Quality Parameters and Soil Health in the Lower Mahanadi Basin, India

  • Sagar Kumar Swain,
  • Bikash Ranjan Parida,
  • Ananya Mallick,
  • Chandra Shekhar Dwivedi and ,
  • Manish Kumar,
  • Arvind Chandra Pandey and
  • Navneet Kumar
  • + 2 authors+ 0 author

The lower Mahanadi basin in eastern India is experiencing significant land and soil transformations that directly influence agricultural sustainability and ecosystem resilience. In this study, we used geospatial techniques to analyze the spatial-temp...

  • Article
  • Open Access
2 Citations
4,372 Views
20 Pages

Since March 2021, a series of volcanic eruptions on Iceland’s Reykjanes Peninsula has repeatedly triggered wildfires in moss-dominated heathlands—an unprecedented phenomenon in this environment. These fires have consumed extensive organic...

  • Review
  • Open Access
5 Citations
3,090 Views
33 Pages

Coastal boulder deposits (CBDs) are among the most striking geomorphic signatures of extreme wave activity, recording the action of both tsunamis and severe storms. Their significance extends beyond geomorphology, providing geological archives that c...

  • Article
  • Open Access
3,115 Views
16 Pages

Landslides are a major natural hazard capable of causing severe damage to infrastructure, ecosystems, and human life. They result from complex interactions of geological, hydrological, and environmental factors, with soil properties playing a crucial...

  • Review
  • Open Access
15 Citations
6,628 Views
31 Pages

Slope failures represent one of the most serious geotechnical hazards, which can have severe consequences for personnel, equipment, infrastructure, and other aspects of a mining operation. Deterministic and stochastic conventional methods of slope st...

  • Article
  • Open Access
1 Citations
1,988 Views
22 Pages

Sediment erosion under turbulent wave action is a highly dynamic process shaped by the interaction between wave properties and sediment characteristics. Despite extensive empirical research, the underlying mechanisms of wave-induced erosion remain in...

  • Article
  • Open Access
14 Citations
8,613 Views
23 Pages

Seismic Hazard Implications of the 2025 Balıkesir Earthquake of Mw 6.1 for Western Türkiye

  • Aydın Büyüksaraç,
  • Fatih Avcil,
  • Hamdi Alkan,
  • Ercan Işık and ,
  • Ehsan Harirchian and
  • Abdullah Özçelik
  • + 1 author+ 0 author

On 10 August 2025, a powerful earthquake (Mw = 6.1) occurred in Balıkesir, located within the Aegean Graben System, one of Türkiye’s major tectonic elements, and was felt across a very wide region. This study presents a comprehensive...

  • Article
  • Open Access
2 Citations
4,855 Views
36 Pages

Large Dam Flood Risk Scenario: A Multidisciplinary Approach Analysis for Reduction in Damage Effects

  • Laura Turconi,
  • Fabio Luino,
  • Anna Roccati,
  • Gilberto Zaina and
  • Barbara Bono

Dam collapse is a catastrophic event involving an artificial reservoir usually filled with water for hydropower or irrigation purposes. Several cases of dam collapses have overwhelmed entire valleys, reconfiguring their geomorphology, redesigning the...

  • Article
  • Open Access
3,492 Views
31 Pages

MiMapper: A Cloud-Based Multi-Hazard Mapping Tool for Nepal

  • Catherine A. Price,
  • Morgan Jones,
  • Neil F. Glasser,
  • John M. Reynolds and
  • Rijan B. Kayastha

Nepal is highly susceptible to natural hazards, including earthquakes, flooding, and landslides, all of which may occur independently or in combination. Climate change is projected to increase the frequency and intensity of these natural hazards, pos...

  • Article
  • Open Access
1 Citations
2,362 Views
20 Pages

Hydrothermally Altered Rocks and Their Implications for Debris Flow Generation in the Monarch Butterfly Biosphere Reserve, Mexico

  • Luis Ángel Jiménez López,
  • Juan Manuel Sánchez Núñez,
  • Antonio Pola,
  • José Cruz Escamilla Casas and ,
  • Hugo Iván Sereno,
  • Perla Rodríguez Contreras and
  • María Elena Serrano Flores
  • + 2 authors+ 0 author

Landslides are common in mountainous regions and can significantly affect human life and infrastructure. The aim of this study is to analyze the role of hydrothermally altered rocks in generating ground instability and triggering debris flows in the...

  • Article
  • Open Access
2 Citations
2,739 Views
16 Pages

Magnetotelluric Monitoring of Earthquake Precursors

  • Alexander K. Saraev,
  • Vadim Surkov,
  • Vjacheslav Pilipenko,
  • Arseny A. Shlykov and ,
  • Nikita Bobrov,
  • Mikhail Dembelov,
  • Denis Zinkin and
  • Sudha Agrahari
  • + 3 authors+ 0 author

Approaches to magnetotelluric monitoring of variations in apparent resistivity and electromagnetic emission that may serve as earthquake precursors are considered. Monitoring of apparent resistivity is advised in the range 7–300 Hz, where natur...

  • Article
  • Open Access
1 Citations
1,053 Views
18 Pages

Global environmental challenges, including eutrophication and hypoxia in enclosed water bodies, require innovative solutions for sustainable water quality management. Lake Biwa, Japan’s largest freshwater lake, suffers from hypoxia in its botto...

  • Article
  • Open Access
2 Citations
2,671 Views
34 Pages

25 September 2025

The Niland Moving Mud Spring, located near the southeastern margin of the Salton Sea, represents a rare and evolving geotechnical hazard. Unlike the typically stationary mud pots of the Salton Trough, this spring is a CO2-driven mud spring that has m...

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GeoHazards - ISSN 2624-795X