Special Issue "Tsunami Science and Engineering II"

Special Issue Editor

Guest Editor
Dr. Valentin Heller

Department of Civil Engineering, University Park, University of Nottingham, Nottingham, NG7 2RD, UK
Website | E-Mail
Phone: +44 (0)11 574 860 49
Interests: landslide-tsunamis (impulse waves); experimental and computational fluid dynamics; coastal engineering; wave and tidal energy conversion; fluid-structure interaction; scale effects

Special Issue Information

Dear Colleagues,

Earthquake-tsunamis, including the 2004 Indian Ocean Tsunami, with over 230,000 casualties, and the 2011 Tōhoku Tsunami in Japan, with over 18,400 people missing or dead, serve as tragic reminders that such waves pose a major natural hazard to human beings. Landslide-tsunamis, including the 1958 Lituya Bay case, may exceed 150 m in height and, if similar waves are generated in lakes or reservoirs (so-called impulse waves), then they may overtop dams and cause significant devastation downstream, such as in the 1963 Vaiont case with around 2000 casualties.

The after-effects caused by such catastrophes are not limited to the region immediately impacted by the wave; for example, the 1963 Vaiont case affected hydropower plant planning and management globally, and the 2011 Tōhoku Tsunami initiated changes to nuclear power plant policies worldwide. Active prevention of the wave generation is extremely unlikely and limited to rare cases where creeping slides were stabilized. Scientists and engineers thus work mainly on passive methods to deal with tsunamis. Such methods include early warning systems, sea walls, reinforced infrastructure and the provision of adequate freeboards of dam reservoirs. The latter methods require detailed knowledge of: (i) wave features as a function of the generation mechanism; (ii) wave propagation; (iii) the shoreline run-up; and (iv) wave–structure interaction. Despite a significant increase in research activities after the 2004 Indian Ocean Tsunami, there is certainly scope for—and the necessity of—more research with the aim to reduce the destruction caused by tsunamis to us and our environment.

This Special Issue aims to repeat the success of “Tsunami Science and Engineering” where 12 articles of the 21 full length submissions were published between 2014 and early 2016, after a rigorous peer-review process. Within a relatively short period, these articles were cited four times on average, up to 4.4 thousand times accessed, and released as a Printed Edition. This relaunch “Tsunami Science and Engineering II” aims to reflect our current understanding of tsunamis and tsunami mitigation, irrespective of the mechanism by which they are generated: earthquakes, landslides, underwater slumps, asteroids, etc. We welcome research papers, reviews (state of the art) and case studies addressing tsunamis and/or impulse waves theoretically, experimentally, numerically and/or based on field studies. I sincerely look forward to receiving your original and exciting contributions.

Dr. Valentin Heller
Guest Editor

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 papers will be 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. Journal of Marine Science and Engineering is an international peer-reviewed open access quarterly 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 350 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

  • Earthquake-tsunamis
  • Landslide-generated impulse waves
  • Landslide-tsunamis
  • Long wave run-up
  • Seismic tsunamis
  • Tsunami early warning system
  • Tsunami forecasting
  • Tsunami hazard assessment and mitigation
  • Tsunami-induced overland flow
  • Tsunami loading on structures

Published Papers (1 paper)

View options order results:
result details:
Displaying articles 1-1
Export citation of selected articles as:

Research

Open AccessArticle Capturing Physical Dispersion Using a Nonlinear Shallow Water Model
J. Mar. Sci. Eng. 2018, 6(3), 84; https://doi.org/10.3390/jmse6030084
Received: 9 May 2018 / Revised: 3 July 2018 / Accepted: 4 July 2018 / Published: 9 July 2018
PDF Full-text (4939 KB) | HTML Full-text | XML Full-text
Abstract
Predicting the arrival time of natural hazards such as tsunamis is of very high importance to the coastal community. One of the most effective techniques to predict tsunami propagation and arrival time is the utilization of numerical solutions. Numerical approaches of Nonlinear Shallow
[...] Read more.
Predicting the arrival time of natural hazards such as tsunamis is of very high importance to the coastal community. One of the most effective techniques to predict tsunami propagation and arrival time is the utilization of numerical solutions. Numerical approaches of Nonlinear Shallow Water Equations (NLSWEs) and nonlinear Boussinesq-Type Equations (BTEs) are two of the most common numerical techniques for tsunami modeling and evaluation. BTEs use implicit schemes to achieve more accurate results compromising computational time, while NLSWEs are sometimes preferred due to their computational efficiency. Nonetheless, the term accounting for physical dispersion is not inherited in NLSWEs, calling for their consideration and evaluation. In the present study, the tsunami numerical model NAMI DANCE, which utilizes NLSWEs, is applied to previously reported problems in the literature using different grid sizes to investigate dispersion effects. Following certain conditions for grid size, time step and water depth, the simulation results show a fairly good agreement with the available models showing the capability of NAMI DANCE to capture small physical dispersion. It is confirmed that the current model is an acceptable alternative for BTEs when small dispersion effects are considered. Full article
(This article belongs to the Special Issue Tsunami Science and Engineering II)
Figures

Figure 1

Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

1. Landslide-Tsunami Hazard from Es Vedrà, Offshore Ibiza

Tan, H.; Ruffini, G.; Heller, V. and Chen, S.H.

Abstract: This study numerically investigates hypothetical landslides from the island Es Vedrà, offshore Ibiza, and the associated landslide-tsunami hazard at (i) Cala d’Hort Beach on Ibiza (3 km away) and (ii) Marina de Formentera (23 km away). Although currently no evidence suggests that Es Vedrà may become unstable, this study illustrates the techniques required for efficient landslide-tsunami hazard assessments involving water bodies such as reservoirs, lakes, fjords and the sea. The violent wave generation process is modelled with the meshless Lagrangian method Smoothed Particle Hydrodynamics. Further offshore the simulations are continued with the less computational expensive code SWASH, based on the non-hydrostatic non-linear Shallow Water Equations capable of considering frequency dispersion and bottom friction. The up to 110 m high tsunamis decay relatively fast with distance from Es Vedrà; the wave height offshore Cala d’Hort is circa 10 m reaching a large maximum run-up height, whilst the run-up heights at Formentera are significantly smaller. This study illustrates that landslide-tsunami hazard assessment can nowadays readily be conducted under consideration of site-specific details such as the bathymetry and topography. This work further intends to support future investigations of real landslide-tsunami cases.

 

2. The 1755 Tsunami in Lisbon Downtown, Portugal

Angela Santos

Abstract: The November 1st, 1755 earthquake triggered a tsunami that hit the entire Portuguese coastline. According to the historical records, in Lisbon, the combined effects of the earthquake, tsunami, and fire caused significant damage to the buildings, destroying about 82% of the city. In addition, the disaster killed more than 10, 000 people. The 18th Century census data show that Lisbon had 109, 754 - 157, 192 residents (older than 7 years old). Thus, the fatalities due to the 1755 disaster correspond to 6.4-9.1 % of the resident population. On the other hand, although the historical accounts are very vast regarding the earthquake and fire, the tsunami description in Lisbon is quite scarce. The recovery process started immediately after the disaster, and in 1758 the “new” downtown was completed. However, with the new streets and buildings, many features of the disaster have been lost in time. Therefore, the objective of this research is to analyze the comprehensive tsunami behavior in Lisbon downtown. Furthermore, this research is a collaboration between the Academia and the Lisbon Museum, which is quite innovative in Portugal. The aim of this research is to provide a permanent archive at the museum to become available for the public and the generations to come so that the memory and knowledge of the 1755 tsunami will be preserved. [...]

 

3. Experimental investigation of debris damming in steady-state flow conditions

Gabriella Mauti, Jacob Stolle, Tomoyuki Takabatake, Ioan Nistor, Nils Goseberg, Majid Mohammadian

Abstract: The entrainment of debris in tsunami-induced floods or in storm surges can result in their accumulation onto structures, a phenomenon known as debris damming. Research on debris loading has primarily focused on debris impact loads. However, limited research has been conducted regarding the loading due to the formation of debris dams in extreme hydrodynamic events. Such dams have been shown to decrease the stability of impacted structures by increasing the area of flow obstruction, resulting thus in increased resistance forces. The formation of debris dams can also result in upstream (backwater) rise and increased flow accelerations around the structure, reducing the structure’s stability. This research analyzes the impact of debris dams formed around a circular column in steady-state flow conditions. The work examines the influence of various debris dam shape, height, and porosity on the induced loads, flow accelerations, and changes in the free water surface. Additionally, it investigates the drag coefficient of the various debris dams. The authors finally conclude that the properties of the debris dam have a significant importance with respect to the flow resistance forces and structural response. The implications of these findings are expected to be of significant interest for engineers designing critical infrastructure.

Back to Top