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Volcano tsunamis and their effects on moored vessel safety: the 2022 Tonga event
Padilla, Sergio; Aniel-Quiroga, Iñigo; Omira, Rachid; González, Mauricio; Kim, Jihwan; Baptista, Maria AnaThe explosion of the Hunga Tonga-Hunga Ha'apai volcano on 15 January 2022 (Tonga 2022) was the origin of a volcano-meteorological tsunami (VMT) recorded worldwide. At a distance exceeding 10 000 km from the volcano and 15 h after its eruption, the moorings of a ship in the port of La Pampilla, Callao (Peru), failed, releasing over 11 000 barrels of crude oil.This study delves into the profound implications of t...
Probabilistic tsunami hazard assessment in meso and macro tidal areas. Applicat...
Gonzalez, Mauricio; Alvarez-Gomez, Jose A.; Aniel-Quiroga, Inigo; Otero, Luís; Olabarrieta, Maitane; Omira, Rachid; Luceno, Alberto; Jelinek, RobertTsunami hazard can be analyzed from both deterministic and probabilistic points of view. The deterministic approach is based on a "credible" worst case tsunami, which is often selected from historical events in the region of study. Within the probabilistic approach (PTHA, Probabilistic Tsunami Hazard Analysis), statistical analysis can be carried out in particular regions where historical records of tsunami hei...
The contribution of submarine optical fiber telecom cables to the monitoring of...
Matias, Luis; Carrilho, Fernando; Sá, Vasco; Omira, Rachid; Niehus, Manfred; Corela, Carlos; Barros, José; Omar, YasserRecent developments in optical fiber cable technology allows the use of existing and future submarine telecommunication cables to provide seismic and sea-level information. In this work we study the impact of three different technologies, 1) SMART, Science Monitoring and Reliable Telecommunications; 2) DAS, Distributed Acoustic Sensing, and; 3) LI, Laser Interferometry, for effective earthquake and tsunami moni...
The making of the NEAM Tsunami Hazard Model 2018 (NEAMTHM18)
Basili, Roberto; Brizuela, Beatriz; Herrero, Andre; Iqbal, Sarfraz; Lorito, Stefano; Maesano, Francesco Emanuele; Murphy, Shane; Perfetti, PaoloThe NEAM Tsunami Hazard Model 2018 (NEAMTHM18) is a probabilistic hazard model for tsunamis generated by earthquakes. It covers the coastlines of the North-eastern Atlantic, the Mediterranean, and connected seas (NEAM). NEAMTHM18 was designed as a threephase project. The first two phases were dedicated to the model development and hazard calculations, following a formalized decision-making process based on a mu...
Site-specific deterministic and probabilistic tsunami hazard assessment for Dib...
El-Hussain, Issa; Al-Habsi, Zaid; Al Bloushi, Khalid; Omira, Rachid; Deif, Ahmed; Baptista, Maria Ana Carvalho Viana; Mohamad, Adel M. E.Destructive tsunamis were reported in the Oman Sea after large earthquakes. The Northern Sultanate of Oman and United Arab Emirates (UAE) were subjected to two confirmed tsunamis on 27 November 1945, caused by an Mw 8.1 earthquake in Makran subduction zone, and on 24 September 2013 following the Mw 7.7 Baluchistan earthquake. In this study, deterministic and probabilistic tsunami hazard assessments are performe...
Study of the 24 September 2013 Oman Sea tsunami using linear shallow water inve...
Baptista, Maria Ana Carvalho Viana; MIRANDA, JORGE MIGUEL; Omira, Rachid; El-Hussain, IssaIn this study, we present a linear inverse approach for the computation of the initial water displacement of a tsunami. The method uses empirical Green functions and linear shallow water wave theory. We apply this methodology to study the source of the 24 September 2013 tsunami off the Makran coast. We re-analyze the 2013 tsunami data, particularly the tide records in the coast of Oman and the DART buoy record ...
Comparison between MUSCL and MOOD techniques in a finite volume well-balanced c...
Reis, Claudia; Figueiredo, Jorge; Clain, Stéphane; Omira, Rachid; Baptista, Maria Ana; Miranda, JorgeNumerical modelling is a fundamental tool for scenario-based evaluation of hazardous phenomena such as tsunami. Nevertheless, the numerical prediction highly depends on the tool quality and therefore the design of efficient numerical schemes that provide robust and accurate solutions still receives considerable attention. In this paper, we implement two different second-order finite volume numerical schemes der...
Tsunami hazard induced by a newly discovered landslide in the Tagus delta off L...
Ramalho, Inês; Omira, Rachid; Terrinha, Pedro; Ribeiro, CarlosDeltas are sedimentary bodies with high sedimentation rates that are very sensitive to changes in environmental conditions. The Tagus delta off Lisbon (Portugal) is characterized by the presence of high energy deposit and erosive structures with an estimated age of approximately 8 ky BP. In this work, we investigate, through numerical modelling, the tsunami hazard induced by a newly discovered underwater landsl...
The Tagus River delta landslide, off Lisbon, Portugal. Implications for Marine ...
Terrinha, Pedro; Duarte, Henrique; Brito, Pedro; Noiva, João; Ribeiro, Carlos; Omira, Rachid; Baptista, Maria Ana; Miranda, Miguel; Magalhães, VítorThe stratigraphy of the Tagus river ebb-tidal delta off Lisbon (Portugal) is investigated using high resolution multichannel seismic reflection profiles with the purpose of searching for sedimentary or erosive features associated with landslides. The Tagus delta is sub-divided in two prograding seismic units of 17 ky to 13 ky and 13 ky to Present based on the calibration of seismic lines using gravity and box-c...
The Tagus River delta landslide, off Lisbon, Portugal. Implications for Marine ...
Terrinha, Pedro; Duarte, Henrique; Brito, Pedro; Noiva, João; Ribeiro, Carlos; Omira, Rachid; Baptista, Maria Ana Carvalho Viana; Miranda, MiguelThe stratigraphy of the Tagus river ebb-tidal delta off Lisbon (Portugal) is investigated using high resolution multichannel seismic reflection profiles with the purpose of searching for sedimentary or erosive features associated with landslides. The Tagus delta is sub-divided in two prograding seismic units of 17 ky to 13 ky and 13 ky to Present based on the calibration of seismic lines using gravity and box-c...