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GeoHazards, Volume 3, Issue 2

June 2022 - 11 articles

Cover Story: This paper looks at earthquake nowcasting, which is the estimation of hazards in the present, the immediate past, and the near future. It reviews some previous methods and introduces new approaches based on deep learning using three distinct models based on recurrent neural networks and transformers. It discusses different choices for observables and measures presenting promising initial results for a region of Southern California using data from 1950 to 2020. The neural net learns patterns of activity to identify hidden variables holding a clue for future activity. The overall estimation quality is measured by the Nash Sutcliffe efficiency comparing the deviation of nowcast and observation with the variance over time in each spatial region. The software is available as open-source. View this paper
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Articles (11)

  • Article
  • Open Access
7 Citations
4,374 Views
26 Pages

20 June 2022

Tsunami inundation estimates are of crucial importance to hazard and risk assessments. In the context of tsunami forecast, numerical simulations are becoming more feasible with the growth of computational power. Uncertainties regarding source determi...

  • Feature Paper
  • Article
  • Open Access
14 Citations
5,536 Views
22 Pages

Use of Neural Networks for Tsunami Maximum Height and Arrival Time Predictions

  • Juan F. Rodríguez,
  • Jorge Macías,
  • Manuel J. Castro,
  • Marc de la Asunción and
  • Carlos Sánchez-Linares

13 June 2022

Operational TEWS play a key role in reducing tsunami impact on populated coastal areas around the world in the event of an earthquake-generated tsunami. Traditionally, these systems in the NEAM region have relied on the implementation of decision mat...

  • Article
  • Open Access
1 Citations
4,537 Views
29 Pages

Pseudo-Probabilistic Design for High-Resolution Tsunami Simulations in the Southwestern Spanish Coast

  • Alejandro González,
  • Marta Fernández,
  • Miguel Llorente,
  • Jorge Macías,
  • Carlos Sánchez-Linares,
  • Julián García-Mayordomo and
  • Carlos Paredes

23 May 2022

The application of simulation software has proven to be a crucial tool for tsunami hazard assessment studies. Understanding the potentially devastating effects of tsunamis leads to the development of safety and resilience measures, such as the design...

  • Article
  • Open Access
6 Citations
3,385 Views
17 Pages

21 May 2022

In this study, an alternative method for conducting probabilistic fault displacement hazard analysis is developed based on stochastic source modeling and analytical formulae for evaluating the elastic dislocation due to an earthquake rupture. It char...

  • Article
  • Open Access
5 Citations
3,771 Views
25 Pages

12 May 2022

A well-known landslide dam that collapsed and generated a large outburst flood is used to show the importance of forensic geology analysis, which is the on-site multidisciplinary study of geohazards carries out as soon as possible after their occurre...

  • Article
  • Open Access
2 Citations
2,684 Views
10 Pages

Estimation of urban seismic damage using numerical simulation needs an automatic modeling method of surface layers and residential buildings. This study focuses on modeling of surface layers and shows a method of constructing models by interpolating...

  • Article
  • Open Access
12 Citations
3,809 Views
15 Pages

22 April 2022

This study intends to evaluate the possible correlation between the correlation dimension (DC) and the seismic moment rate for different late Quaternary active fault data, shallow crustal earthquakes, and GPS on the island of Sumatra Probabilistic Se...

  • Feature Paper
  • Article
  • Open Access
12 Citations
6,750 Views
28 Pages

Earthquake Nowcasting with Deep Learning

  • Geoffrey Charles Fox,
  • John B. Rundle,
  • Andrea Donnellan and
  • Bo Feng

15 April 2022

We review previous approaches to nowcasting earthquakes and introduce new approaches based on deep learning using three distinct models based on recurrent neural networks and transformers. We discuss different choices for observables and measures pre...

  • Article
  • Open Access
4,048 Views
21 Pages

Modelling the Roles of Community-Based Organisations in Post-Disaster Transformative Adaptation

  • Oluwadunsin Ajulo,
  • Ishmael Adams,
  • Ali Asgary,
  • Patrick Tang and
  • Jason Von-Meding

11 April 2022

Disasters result where hazards and vulnerabilities intersect. The concept of vulnerability itself is mainly a social construct and the extent to which this can be overcome while transforming disaster-prone systems has often been emphasised in the cri...

  • Article
  • Open Access
1 Citations
3,392 Views
16 Pages

6 April 2022

Since huge earthquakes are expected along plate subduction zones such as the Japan Trench and Nankai Trough, the estimation of coseismic slip and interseismic slip deficit is essential for immediate response and preliminary measures to reduce damage....

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GeoHazards - ISSN 2624-795X