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GeoHazards, Volume 5, Issue 3

September 2024 - 19 articles

Cover Story: Sediment gravity flows (debris flows and high-sediment-concentration hyperconcentrated flows) cause serious damage in the Alpine regions. A multidisciplinary approach has been implemented to quantify the sediment gravity flow causes and characteristics starting from the catchments’ features. The research focused on 78 well-documented catchments of Susa Valley (Western Italian Alps) with 614 historical flow events reported. As a result, three catchment groups were recognized, based on the dominant catchment lithology, that influence the sediment gravity flows’ rheology, sedimentological and depositional features, triggering rainfall values, seasonality, frequency, and alluvial fan architecture. Moreover, we have demonstrated the fundamental role played by the bedrock outcropping percentage in determining the flow process type that can most likely occur in each catchment. View this paper
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Articles (19)

  • Article
  • Open Access
2 Citations
7,203 Views
47 Pages

Global Historical Megatsunamis Catalog (GHMCat)

  • Mercedes Ferrer and
  • Luis I. González-de-Vallejo

23 September 2024

The Global Historical Megatsunamis Catalog (GHMCat) is presented for the first time, including events with the largest waves recorded in historical times. An objective criterion is established to identify megatsunamis based on the maximum wave height...

  • Article
  • Open Access
2 Citations
6,354 Views
39 Pages

Probabilistic Seismic Hazard Assessment of Lisbon (Portugal)

  • Büşra Gögen,
  • Shaghayegh Karimzadeh and
  • Paulo B. Lourenço

19 September 2024

The 1755 Lisbon earthquake holds significant historical importance in Portuguese history. The subsequent tsunami resulted in extensive destruction and damage, affecting not only Lisbon but also other regions of Portugal, Spain, and North Africa. This...

  • Article
  • Open Access
1 Citations
1,475 Views
15 Pages

17 September 2024

In slopes where high pore water pressure exists, deep counterfort drains (also called drainage trenches or trench drains) represent one of the most effective methods for improving stability or mitigating landslide risks. In the cases of deep or very...

  • Article
  • Open Access
2 Citations
2,074 Views
31 Pages

Deep Electrical Resistivity Tomography for Detecting Gravitational Morpho-Structures in the Becca France Area (Aosta Valley, NW Italy)

  • Maria Gabriella Forno,
  • Marco Gattiglio,
  • Franco Gianotti,
  • Cesare Comina,
  • Andrea Vergnano and
  • Stefano Dolce

9 September 2024

Deep-seated gravitational slope deformations (DSGSDs) consist of gravity-induced, large-scale, gradual rock mass movements. In the Aosta Valley region (Valle d’Aosta NW Italy), DSGDs affect wide valley slopes and produce several interconnected...

  • Article
  • Open Access
2 Citations
5,077 Views
20 Pages

2 September 2024

Urban flooding is becoming more frequent and severe due to the impact of climate change, underscoring the urgent need for effective flood risk management. This study investigates the dynamics of flood risk through two decades, from 2000 to 2020, in N...

  • Article
  • Open Access
2,773 Views
13 Pages

Analyzing Literacy on Weather-Related Hazards and Risks among Students of an Eastern Mediterranean Region

  • Katerina Papagiannaki,
  • Kyriaki Makri,
  • Vassiliki Kotroni and
  • Konstantinos Lagouvardos

29 August 2024

The present study analyzes students’ weather-related hazard and risk literacy in Greece, a climate change hotspot region in the Eastern Mediterranean. In this context, we examine the students’ level in two core literacy variables, namely...

  • Article
  • Open Access
2 Citations
3,070 Views
20 Pages

25 August 2024

Over the past few decades, cities have experienced increased floods affecting property and threatening human life as a result of a warming planet. There is still an incomplete understanding of the flood risk patterns in urban communities with differe...

  • Article
  • Open Access
7 Citations
10,491 Views
17 Pages

A Preliminary Hazard Assessment of Kolumbo Volcano (Santorini, Greece)

  • Anna Katsigera,
  • Paraskevi Nomikou and
  • Kosmas Pavlopoulos

19 August 2024

Volcanic eruptions stand as destructive threats to adjacent communities, unleashing multiple hazards such as earthquakes, tsunamis, pyroclastic flows, and toxic gases. The imperative for proactive management of volcanic risks and communities’ a...

  • Article
  • Open Access
2,786 Views
17 Pages

16 August 2024

The effects of global warming, coupled with the continuing expansion of urbanization, have significantly increased vulnerability to urban flooding, widespread erosion risks, and related phenomena such as shallow landslides and mudflows. These challen...

  • Article
  • Open Access
2 Citations
3,014 Views
19 Pages

Global Landslide Finder: Detecting the Time and Place of Landslides with Dense Earth Observation Time Series

  • Muhammad Aufaristama,
  • Harald van der Werff,
  • Andries E. J. Botha and
  • Mark van der Meijde

3 August 2024

This paper presents a remote sensing approach for rapidly and automatically generating maps of surface disturbances caused by landslides on the global scale. Our approach not only identifies the locations of these disturbances but also pinpoints the...

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GeoHazards - ISSN 2624-795XCreative Common CC BY license