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GeoHazards, Volume 6, Issue 1

March 2025 - 15 articles

Cover Story: We revised the rich historical seismicity of Lefkada Isl., Ionian Sea, Greece, by utilizing a variety of little-known and published macroseismic information sources. A new descriptive and parametric catalogue was organized for the time interval from the 15th century A.D. up to 1911. The descriptive part of the catalogue includes information on the earthquakes’ impact on the anthropogenic and the natural environments. The parametric part includes revised earthquake focal parameters.  The catalogue is likely complete for lower magnitude threshold 6.0. A large puzzling earthquake examined ruptured the Strait of Otranto and supposedly damaged an unprecedentedly extensive region in Italy and Greece on 9/20 February 1743. Little-known documents revealed that the heavy destruction reported in Lefkada was very likely due to amalgamated information from local earthquakes and the large one. View this paper
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Articles (15)

  • Article
  • Open Access
1 Citations
1,424 Views
17 Pages

To reduce earthquake damage and its effect on the structures, tuned mass dampers (TMDs) are generally positioned on the top of the structures for effectiveness, but existing TMDs on the story levels have problems due to space and additional vertical...

  • Article
  • Open Access
6,420 Views
32 Pages

Upgrading a Low-Cost Seismograph for Monitoring Local Seismicity

  • Ioannis Vlachos,
  • Marios N. Anagnostou,
  • Markos Avlonitis and
  • Vasileios Karakostas

The use of a dense network of commercial high-cost seismographs for earthquake monitoring is often financially unfeasible. A viable alternative to address this limitation is the development of a network of low-cost seismographs capable of monitoring...

  • Article
  • Open Access
1 Citations
4,469 Views
27 Pages

During winter 2023–2024, the Charente River experienced four successive flood events in six months, including one major flood and three moderate ones. These grouped floods affected a huge territory in the Charente valley, in particular the Terr...

  • Article
  • Open Access
1 Citations
3,147 Views
14 Pages

Application of the Rainfall–Runoff–Inundation Model for Flood Risk Assessment in the Mekerra Basin, Algeria

  • Abdallah Afra,
  • Yacine Abdelbaset Berrezel,
  • Cherifa Abdelbaki,
  • Abdeslam Megnounif,
  • Mohamed Saber,
  • Mohammed El Amin Benabdelkrim and
  • Navneet Kumar

The Mekerra Basin in northern Algeria is highly vulnerable to severe flood events, such as those in October 1986 and September 1994, which caused significant damage to infrastructure and the environment. To address flood risk, this study applied the...

  • Article
  • Open Access
1 Citations
2,795 Views
30 Pages

The Destabilizing Effect of Glacial Unloading on a Large Volcanic Slope Instability in Southeast Iceland

  • Daniel Ben-Yehoshua,
  • Sigurður Erlingsson,
  • Þorsteinn Sæmundsson,
  • Reginald L. Hermanns,
  • Eyjólfur Magnússon,
  • Robert A. Askew and
  • Jóhann Helgason

Since the turn of the 20th century, glacial thinning has been exposing volcanic mountain slopes around Iceland’s outlet glaciers. In the early 2000s, several slope instabilities appeared around the Svínafellsjökull outlet glacier in...

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GeoHazards - ISSN 2624-795X