Article
Mechanics
Zhiyuan Ren, Jingming Hou, Peitao Wang, Yuchen Wang
Summary: Research shows that earthquakes occurring in the Ryukyu Trench, Nankai Trough, and Japan Trench can trigger tsunamis, affecting Hangzhou Bay in China, especially the prolonged oscillations caused by the 2011 Tohoku tsunami. Spectral and modal analyses revealed that resonant oscillations with longer periods had the highest energy amplification, providing important implications for tsunami hazard assessments in coastal communities.
Article
Engineering, Ocean
Peida Han, Heng Yu, Xiping Yu
Summary: This study demonstrates that the sloshing effect dominates tsunami events in semi-closed water bodies, leading to the disastrous 2018 Palu Bay tsunami. The lack of consideration for sloshing in existing tsunami warning systems resulted in the failure to predict the event correctly. Urgent updates to global tsunami warning systems may be necessary to incorporate the potential impact of the sloshing effect for future disaster prevention.
APPLIED OCEAN RESEARCH
(2021)
Article
Engineering, Civil
Claudia Cecioni, Verdiana Iorio, Giorgio Bellotti, Stephan T. Grilli
Summary: On September 28, 2018, a Mw 7.5 earthquake triggered a devastating tsunami in Paul Bay, Indonesia. Several large submarine landslides along the bay's shores were found to have significantly contributed to the tsunami generation. However, the estimation of the landslides' geometry and parameters was highly uncertain. This study used a probabilistic tsunami hazard analysis based on Monte Carlo simulations to investigate the impact of the uncertainty in landslide parameters on tsunami hazard.
COASTAL ENGINEERING
(2023)
Article
Engineering, Marine
Ping Wang, Jun Cheng
Summary: The rapid movement of large ships in moderate-sized estuaries can create tsunami-like waves, as observed in Tampa Bay, Florida, USA. The waves generated by cruise ships were measured with two distinct characteristics, providing a valuable opportunity for studying tsunami dynamics. The phenomenon highlights the importance of understanding and preparing for the unpreventable hazard of tsunamis caused by various factors like mega-ships, landslides, or earthquakes.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Marine
Priti Tandel, Hardik Patel, Trushit Patel
Summary: This paper presents a fractional approach to studying the mathematical model of tsunami wave propagation along a coastline. The Fractional Reduced Differential Transform Method (FRDTM) is used to analyze the model, and solutions for different coastal slopes and ocean depths are obtained. The effects of coast slope and sea depth variations on tsunami wave velocity and wave amplification are demonstrated at different time levels and orders alpha. The proposed method is validated by comparing the results with the Elzaki Adomian Decomposition Method (EADM) for an order alpha = 1.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Marine
An-Chi Cheng, Anawat Suppasri, Mohammad Heidarzadeh, Bruno Adriano, Constance Ting Chua, Fumihiko Imamura
Summary: This study analyzes the wave characteristics of a tsunami triggered by an intraplate earthquake in Japan's Fukushima coast in 2016. The analysis reveals that the tsunami wave consisted mainly of short wave periods but also exhibited long oscillations. High-energy waves were concentrated in the Sendai Bay and around the Oshika Peninsula. The analysis also indicates that the tsunami energy was entrapped in the nearshore areas, resulting in resonance amplifications in the Sendai Bay.
Article
Engineering, Civil
S. R. Pudjaprasetya, D. Adytia, N. Subasita
Summary: This research was inspired by the deadly tsunami that struck Palu Bay, Sulawesi, Indonesia on September 28, 2018, and focused on the impact of bathymetry and underwater obstacles on local wave amplification. Through numerical simulations and field surveys, it was found that the bathymetry of Palu Bay plays a crucial role in local wave amplification.
COASTAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Civil
Yusuke Yamanaka, Kana Hashimoto, Yoshimitsu Tajima
Summary: In this study, a real-time tsunami estimation method using Green's functions was developed to account for nonlinear tsunami effects in coastal areas. The study focused on large tsunamis in Urado Bay, Japan and investigated the effects of advection, inundation, and bottom friction in accurately estimating near-shore tsunami propagation. The modified Green's functions based on the linearly approximated effects of advection were applied to accurately estimate water surface level and flow velocity changes around Urado Bay. The developed method has potential applications in real-time tsunami inundation forecasting and vessel evacuation simulations.
COASTAL ENGINEERING JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Mauricio Gonzalez, Jose A. Alvarez-Gomez, Inigo Aniel-Quiroga, Luis Otero, Maitane Olabarrieta, Rachid Omira, Alberto Luceno, Robert Jelinek, Elisabeth Krausmann, Joern Birkman, Maria A. Baptista, Miguel Miranda, Ignacio Aguirre-Ayerbe
Summary: Tsunami hazard can be analyzed through deterministic worst-case scenarios or probabilistic methods. This study introduces a Probabilistic Tsunami Hazard Analysis (PTHA) approach based on synthetic seismic catalogs and tidal conditions, applied to the Bay of Cadiz in Spain. The methodology involves generating scenarios from a database of synthetic events and mapping thematic hazard maps based on statistical analysis.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Oceanography
Y. Wang, N. Zamora, M. Quiroz, K. Satake, R. Cienfuegos
Summary: This study focuses on investigating the resonance characteristics of trans-Pacific tsunami events in bays and continental shelves of Japan, revealing that regional seafloor topography is the key factor controlling resonance behaviors, while period components generated at far-field tsunami sources are more noticeable on signals recorded at offshore stations.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Engineering, Civil
Kaori Nagai, Abdul Muhari, Kwanchai Pakoksung, Masashi Watanabe, Anawat Suppasri, Taro Arikawa, Fumihiko Imamura
Summary: The study found that the coastal landslides in the southern part of the bay play a significant role in the observed tsunami in Palu city, but the mass volume of the source overestimated the bathymetric survey data. Considering the possibility of submarine landslide, the simulation results could approximately explain the maximum tsunami heights in the southern part of the bay.
COASTAL ENGINEERING JOURNAL
(2021)
Article
Nuclear Science & Technology
Naoto Kihara, Hideki Kaida, Yoshiyuki Takahashi, Ayumi Nishi, Tatsuto Kimura, Naoki Fujii, Bumpei Fujioka, Shingo Oda, Yasuki Ohtori, Yoshinori Mihara
Summary: This paper proposes a risk-based graded approach for tsunami probabilistic risk assessment (PRA). The approach incorporates uncertainties of tsunami hazard analysis in subsequent analyses and provides five grades of assessment depending on the level of detail. The graded approach framework was experimentally applied to the tsunami PRA for a virtual nuclear power station.
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
(2023)
Article
Geography, Physical
Masaki Yamada, Shigehiro Fujino, Takashi Chiba, Catherine Chague, Daisuke Takeda
Summary: The study focused on onshore sediment cores from Beppu Bay in northern Kyushu Island, Japan, to investigate prehistoric intraplate earthquakes' potential generation of tsunamis and establish a chronology for these events. Findings included identifying distinct sand layers and dating them using radiocarbon age modeling, as well as linking tsunami deposits to volcanic eruptions, fault ruptures, and environmental changes.
QUATERNARY SCIENCE REVIEWS
(2021)
Review
Biochemistry & Molecular Biology
Sneh Punia Bangar, Arashdeep Singh, Adeleke Omodunbi Ashogbon, Hanuman Bobade
Summary: Ball-milling is a cost-effective and environmentally friendly technology that can modify and decrease starch to nanoscale size through mechanical actions. It improves the digestibility and functional properties of starch by reducing relative crystallinity and increasing surface area. This review discusses the impact of ball-milling on the composition, structure, morphology, thermal and rheological characteristics of starch granules. It also highlights the potential of ball-milling for producing high-quality starches in both food and non-food industries.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
Karla Pozo, Victoria Gomez, Petra Pribylova, Gerhard Lammel, Jana Klanova, Anny Rudolph, Ramon Ahumada
Summary: This study determined the levels of POPs and PAHs in abiotic samples from Concepcion Bay in Central Chile. The results showed that PBDEs had the highest levels in air, water, sediment, and soil, while PAHs also had high levels in these samples. PCBs and chlorinated pesticides were generally low and did not show clear trends along the water column. These new data are important for assessing the health status of a relevant coastal area in central Chile.
MARINE POLLUTION BULLETIN
(2022)