Review
Geosciences, Multidisciplinary
Jan Oetjen, Max Engel, Holger Schuettrumpf
Summary: Interest in using coastal boulders as a proxy for high-energy wave events has increased significantly in the past two decades. Experimental studies on boulder transport by tsunamis provide crucial insights into the physical parameters controlling the process, highlighting the importance of wave-facing area and drag force. However, there are significant uncertainties in existing inverse modeling approaches for past inundation processes, and a standardized research environment is proposed to improve numerical models for tsunami-induced boulder transport.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Andrew B. Kennedy, Ronadh Cox, Frederic Dias
Summary: A dimensionless framework has been developed to relate CBD properties with storm-wave hindcasts and measurements, producing data-driven relations. Analysis of individual storm-transported boulders delineates the dynamic space where storm-wave CBD occur.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Peng Shen, Yiwen Wang, Yun Chen, Pengqiang Fu, Lijie Zhou, Lijia Liu
Summary: This study aimed to design a magnetic suspension system coupled with a single-winding bearingless motor and permanent magnet bearings to address the issue of negative axial stiffness, improving the stability of the suspension rotor. By integrating factors and selecting optimal structural parameters of the hydrodynamic bearing, the blood pump rotor exhibited a good suspension stability with a maximum offset of no more than 2 micrometers under external fluid impact.
Review
Geology
Simon K. Haslett, Bernardine R. Wong
Summary: This study revisits the application of hydrodynamic equations in coastal boulder movement research and finds that recent criticisms do not necessarily prove the equations flawed, as they may have been misapplied in inappropriate physical settings. The importance of hydrodynamic equations as analytical tools in coastal risk assessment and hazard management is highlighted.
JOURNAL OF GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Syamsidika, Teuku Muhammad Rasyif, Hermann M. Fritz, Yunita Idris, Ibnu Rusydy
Summary: This research aims to investigate potential structures to serve as alternative tsunami vertical evacuation buildings for tsunami-prone cities like Banda Aceh. Results showed that around 96 to 134 buildings, including schools, hotels, an assembly hall, government offices, and houses, could be used for tsunami vertical evacuation. This offers a significant increase in capacity compared to the current official tsunami escape buildings in Banda Aceh, Indonesia.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2023)
Article
Geosciences, Multidisciplinary
R. P. Bourman, C. V. Murray-Wallace, D. Panda, S. Buckman, D. Banerjee, D. D. Ryan, L. T. White
Summary: A high-level coastal boulder field at Whalers Way, southern Eyre Peninsula, South Australia, is formed on a gently seaward-sloping, karst-weathered calcrete-capped structural bench. The boulder field consists of over 1000 ex situ boulders, cobbles, and pebbles derived locally from bedrock outcrops along the adjacent coastline. The formation of the boulder field is suggested to be the result of a high-energy wave event in the Holocene highstand.
AUSTRALIAN JOURNAL OF EARTH SCIENCES
(2023)
Article
Mechanics
Bruno Simon, Pierre Lubin, Hubert Chanson
Summary: The aim of this research is to provide convincing evidence on the turbulent processes induced by three-dimensional bores, based on physical and computational fluid dynamics studies. The study shows that complex three-dimensional flow takes place during the bore passage, and the propagation of the bore front drastically changes the properties of the water column. The ejection of turbulent structures also depends on the initial flow conditions.
Article
Engineering, Multidisciplinary
GuanYing Xing, Song Xue, Tao Hong, HuaiYu Zuo, XiaoBing Luo
Summary: A novel hydrodynamic suspension micropump without a grooved thrust bearing is proposed in this paper, which can levitate the rotating components in liquid without any mechanical friction. The mechanisms of suspension forces formation, the centrifugal effect, and the wedge effect are identified and the variation in suspension forces with rotor position is investigated. The prototype HSMP designed in this study shows a maximum output performance that is manyfold greater than other micropumps, demonstrating its simplicity, high power density, and high reliability.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Mechanics
Shravan Pradeep, Alan Wessel, Lilian C. Hsiao
Summary: We present the linear rheology of dense suspensions containing sterically stabilized smooth and mesoscopically rough colloids interacting as hard particles. Our findings demonstrate that rough colloids at high volume fractions have storage and loss moduli that are orders of magnitude higher than smooth colloids. Through frequency-concentration superposition, we are able to collapse the viscoelasticity data onto a master curve, indicating a more elastic microstructure and reduced cage volume for rough particles. By combining mode-coupling theory, hydrodynamic modeling, and activated hopping theory, we explain that rough particles with significantly reduced localization lengths tend to be trapped in their glassy cages for extended periods of time. High-frequency data reveal that rough colloids undergo a transition from a free-draining to a fully lubricated state above the crossover volume fraction and exhibit solidlike behavior. Scaling analyses support the idea that enhanced lubrication forces between interlocking asperities lead to rotational constraints and stress-bearing structures that greatly elevate the viscoelasticity of dense suspensions.
JOURNAL OF RHEOLOGY
(2022)
Article
Engineering, Civil
Ismail M. I. Qeshta, M. Javad Hashemi, M. Reza Hashemi, Rebecca J. Gravina, Sujeeva Setunge
Summary: This paper investigates the fragility of rigid-frame bridges with strong pier-to-deck connectivity under tsunami loads, using Monte Carlo simulation to consider parameter uncertainties. The results suggest that two-parameter intensity measures are better for estimating structural response and that strengthening bridge piers with FRP effectively reduces the risk of failure for rigid-frame bridges.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2022)
Article
Astronomy & Astrophysics
David Jewitt, Yoonyoung Kim, Jing Li, Max Mutchler
Summary: Deep Hubble Space Telescope images reveal a large population of comoving boulders resulting from the DART spacecraft impact into asteroid Dimorphos. The boulders have a slightly higher velocity dispersion than the gravitational escape velocity, indicating the kinetic energy of the impact is absorbed by the boulders. The asymmetric distribution suggests the boulders originate from as little as 2% of Dimorphos' surface.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Engineering, Chemical
Zhidong Tang, Yuexin Han, Peng Gao, Feng Yang, Kaili Xu, Yuqing Feng
Summary: A hydrodynamic model has been developed for a U-type reduction chamber in suspension roaster. The model includes four equations and predicts solids concentration and materials' height. Experimental results show good agreement with the model predictions.
Article
Mechanics
A. Dhar, P. S. Burada, G. P. Raja Sekhar
Summary: This study analyzes the swimming characteristics of an active swimmer in a dilute and disperse suspension modeled as an effective Brinkman medium. Emphasis is placed on the impact of the interior domain of an individual swimmer and its neighbors, along with predicting effective resistivity and analyzing propulsion speed and efficiency. Results show a noticeable increase in migration velocity and swimming efficiency at optimum occupancy, and rheological characteristics such as effective viscosity are highlighted.
Article
Chemistry, Physical
Patrick Kreissl, Christian Holm, Rudolf Weeber
Summary: Magnetic nanoparticles couple to polymeric environments through various mechanisms, including van der Waals, steric, hydrodynamic, and electrostatic forces. This leads to interesting effects and potential applications, although the details of the coupling are often unknown. Previous work has shown that hydrodynamic coupling alone can explain observed trends in magnetic AC susceptibility spectra for spherical particles. Now, this publication focuses on the interplay of steric and hydrodynamic interactions in non-spherical particles and their coupling to a polymer suspension.
Article
Engineering, Multidisciplinary
Guanying Xing, Tao Hong, Song Xue, Hanbing Ke, Xiaobing Luo
Summary: In this study, a method based on laser displacement sensors was proposed to obtain the centre location of the rotor in a hydrodynamic suspension micropump, which is wrapped in motor windings with strong electromagnetic interference. Experimental results showed that the proposed method can achieve contactless anti-jamming rotor trajectory monitoring with less than 1.3% relative uncertainty.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2023)
Editorial Material
Computer Science, Information Systems
Ghassan Beydoun, Sergiu Dascalu, Dale Dominey-Howes, Andrew Sheehan
INFORMATION SYSTEMS FRONTIERS
(2018)
Article
Geosciences, Multidisciplinary
Amir Zainali, Roberto Marivela, Robert Weiss, Yongqian Yang, Jennifer L. Irish
Article
Geosciences, Multidisciplinary
Jun-Whan Lee, Jennifer L. Irish, Robert Weiss
Article
Geochemistry & Geophysics
Rebekka Steffen, Holger Steffen, Robert Weiss, Benoit S. Lecavalier, Glenn A. Milne, Sarah A. Woodroffe, Ole Bennike
EARTH AND PLANETARY SCIENCE LETTERS
(2020)
Article
Geosciences, Multidisciplinary
Mandi C. Thran, Sascha Brune, Jody M. Webster, Dale Dominey-Howes, Daniel Harris
Summary: The study investigates the buffering capacity of the Great Barrier Reef against tsunamis triggered by various sources. It reveals that coral cover has a stronger buffering effect on higher-amplitude tsunamis. The orientation of the shoreline relative to the reef platforms determines the level of protection, with areas behind broad, shallow, coral-covered platforms benefiting the most.
Article
Geosciences, Multidisciplinary
Emma Calgaro, Nick Craig, Leyla Craig, Dale Dominey-Howes, Julia Allen
Summary: The research reveals that the vulnerability and resilience levels of the d/Deaf community are affected by factors such as inadequate human and social capital, unsupportive governance structures, lack of funds and clear directives for sustainable change, as well as failures in understanding and overcoming cultural divides within the community and with the hearing world.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2021)
Article
Engineering, Civil
Laura Szczyrba, Yang Zhang, Duygu Pamukcu, Derya Ipek Eroglu, Robert Weiss
Summary: The study found that community vulnerabilities are the main predictors of structural damage in hurricane disasters, emphasizing the importance of considering both hazards and community vulnerabilities in post-disaster relief and pre-disaster mitigation efforts.
NATURAL HAZARDS REVIEW
(2021)
Article
Geosciences, Multidisciplinary
Lulu He, Dale Dominey-Howes, Jonathan C. Aitchison, Annie Lau, David Conradson
Summary: This study examines the success and limitations of post-disaster recovery process in Christchurch, New Zealand after the 2010-11 earthquake sequence. It highlights the top-down approach to recovery, challenges such as prolonged insurance negotiations, unfair offers, and hardships in post-earthquake life, as well as changes in trust patterns within local communities. Relocated households expressed higher trust in their neighbors and communities compared to the government and private insurance companies.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2021)
Article
Oceanography
Jun-Whan Lee, Jennifer L. Irish, Robert Weiss
Summary: In this study, a new tsunami model TRRF-INV is proposed to provide probabilistic estimates of a tsunami source and run-up distribution from a small number of run-up records. The model was tested in synthetic scenarios and a case study, showing reasonable estimation of tsunami source and run-up distribution. The TRRF-INV model has the potential to support accurate hazard assessment and provide new insights into tsunami source and impact.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Geography
Victoria Haynes, Emma Calgaro, Dale Dominey-Howes
Summary: Research finds that planned estates are vulnerable to heatwaves both physically and in terms of human vulnerability, requiring improvements in the built environment, urban greening, consumer awareness, and development processes to enhance resilience and sustainability for estate residents.
GEOGRAPHICAL RESEARCH
(2022)
Article
Geochemistry & Geophysics
Robert Weiss, Jennifer Irish, Beverly Goodman Tchernov
Summary: This article presents a new model for studying the sensitivity of boulders, fluid flow, and environmental parameters through simulations, providing a better understanding of the process of boulder dislodgement.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Oceanography
Jun-Whan Lee, Jennifer L. Irish, Robert Weiss
Summary: This paper presents a data-driven model called the TRRF-FF model for predicting alongshore near-field tsunami runup distribution in less than a second. The model is more flexible, occupies less storage space, and is faster and more reliable than real-time physics-based numerical simulation. Validation with synthetic tsunami scenarios and the 2011 Tohoku tsunami event in Japan shows that the TRRF-FF model outperforms a precomputed tsunami simulation database.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Wenshu Yap, Adam D. Switzer, Chris Gouramanis, Ezequiel Marzinelli, Winona Wijaya, Yu Ting Yan, Dale Dominey-Howes, Maurizio Labbate, Seshachalam Srinivasalu, Kruawun Jankaew, Federico M. Lauro
Summary: The study shows that microbial communities in overwash deposits are significantly different from those in soils and sediments not derived from overwash processes, indicating the potential for molecular techniques to accurately distinguish between tsunami and storm deposits.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Review
Geosciences, Multidisciplinary
Dale Dominey-Howes
GEOSCIENCE LETTERS
(2018)
Article
Geography
Andrew Gorman-Murray, Scott McKinnon, Dale Dominey-Howes, Catherine J. Nash, Rillark Bolton
GENDER PLACE AND CULTURE
(2018)
