Article
Environmental Sciences
J. W. Kim, S-B Woo, J. Song, H-K Kwon
Summary: The Sihwa Tidal Power Plant in Korea, built in 2011, aimed to improve water quality and produce renewable energy. Research found significant differences in mass transport patterns between power generation and drainage phases, which could have a significant impact on material exchange and sediment transport near the TPP.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yaozong Zhou, Yidong Lou, Weixing Zhang, Peida Wu, Jingna Bai, Zhenyi Zhang
Summary: This paper proposes an extended method to better fit the impact of asymmetric delay on GNSS Positioning, Navigation and Timing (PNT) applications. The extended method includes horizontal gradients and second-order horizontal gradients. Evaluation results show that the extended method outperforms the classical method, with improved modeling accuracy and performance in Precise Point Positioning (PPP) and coordinate estimations.
Article
Environmental Sciences
Sara Durante, Paolo Oliveri, Rajesh Nair, Stefania Sparnocchia
Summary: Thermohaline staircases, generated through extensive double diffusion processes in the Tyrrhenian Sea, facilitate efficient vertical mixing and favor downward fluxes of heat and salt, especially in thin and sharp interfaces. With the increasing salt and heat content of the Levantine Intermediate Water during the observation period, flux values in the water column below it rise to about 1800 m. Internal gravity waves may modulate the structure of the staircases and contribute to mixing, but further assessment of these processes is limited by the sampling frequency of the time series.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Physics, Multidisciplinary
Carlo Heissenberg
Summary: We calculate the tidal corrections to the loss of angular momentum in a two-body collision using an amplitude-based approach. The eikonal operator allows us to efficiently combine elastic and inelastic amplitudes and capture contributions from both gravitational wave emissions and the static gravitational field. We employ powerful collider-physics techniques and cross-checked the results with an independent calculation in the post-Newtonian limit.
PHYSICAL REVIEW LETTERS
(2023)
Article
Environmental Sciences
Meredith A. Holgerson, David C. Richardson, Joseph Roith, Lauren E. Bortolotti, Kerri Finlay, Daniel J. Hornbach, Kshitij Gurung, Andrew Ness, Mikkel R. Andersen, Sheel Bansal, Jacques C. Finlay, Jacob A. Cianci-Gaskill, Shannon Hahn, Benjamin D. Janke, Cory McDonald, Jorrit P. Mesman, Rebecca L. North, Cassandra O. Roberts, Jon N. Sweetman, Jackie R. Webb
Summary: The study reveals that the mixing regimes of shallow waterbodies are highly sensitive to small differences in size and depth. Shallow lakes tend to mix more frequently, while shallow ponds mix less often. Precipitation events weaken stratification and can cause short-term mixing.
WATER RESOURCES RESEARCH
(2022)
Article
Mechanics
Guang-Yu Ding, Yu-Hao He, Ke-Qing Xia
Summary: The study investigates the influence of tidal force and topography on flow dynamics, transport, and mixing in horizontal convection. The results show that local energy dissipation near topography is enhanced by strong tide, depending on the height of the topography and tidal frequency omega. The competition among dominant forces in the system leads to different flow regimes, and a power law relationship is derived linking the mixing coefficient and tidal Reynolds number.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Environmental Sciences
Gillang Noor Nugrahaning Gusti, Kiyosi Kawanisi, Mohamad Basel Al Sawaf, Faruq Khadami
Summary: Investigating subtidal friction and mass transport is crucial for understanding subtidal dynamics in tidal rivers. This study utilizes frequency domain and theoretical decomposition analyses to examine the behaviors of subtidal friction and flux in a tidal river channel with limited river runoff. The findings reveal the dominance of semidiurnal and diurnal tides and the influence of subtidal flow-induced friction and Eulerian return flux in a low-discharge tidal river channel.
Article
Computer Science, Interdisciplinary Applications
Yang Song, Pei Wang, Lili Wang, Dongjun Ma, Anmin He, Dawei Chen, Zhengfeng Fan, Zongqiang Ma, Jianguo Wang
Summary: The early-time dynamics of Rayleigh-Taylor instability with a premixed density gradient layer were studied, showing an inactive stage in the mixing layer with dominant span-wise vortices. The amplitude of initial perturbations and the width of the premixed layer were found to be crucial in determining the characteristic time scale of the inactive stage, while the wave number had less effect. The influence of initial conditions on the early-time dynamics of the mixing layer was also analyzed.
COMPUTERS & FLUIDS
(2021)
Article
Thermodynamics
Bo Feng, Xiaodong Liu, You Ying, Yulin Si, Dahai Zhang, Peng Qian
Summary: Research shows that in the tandem arrangement of turbines, the downstream turbine's performance significantly degrades but can partially recover with an increase in tandem distance. However, the issue of load fluctuation still persists in tandem configurations and is even more severe than in the upstream turbine.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Geosciences, Multidisciplinary
Pengyang Song, Dmitry Sidorenko, Patrick Scholz, Maik Thomas, Gerrit Lohmann
Summary: Tides have a significant impact on the ocean and climate. This study compares two approaches, tidal mixing parameterization and explicit tidal forcing, in a general ocean circulation model. The results show that explicit tidal forcing leads to stronger tidal mixing in certain areas and a stronger upper cell of the Atlantic Meridional Overturning Circulation (AMOC), while tidal mixing parameterization leads to a stronger lower cell of the AMOC. Both approaches increase the meridional density gradient of the Antarctic Circumpolar Current and also reveal some phenomena that are not considered in the parameterization scheme. A high-resolution short-term tidal simulation is necessary to improve climate studies.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2023)
Article
Geosciences, Multidisciplinary
Preston Spicer, Kimberly Huguenard, Kelly L. Cole, Daniel G. MacDonald, Michael M. Whitney
Summary: This study utilized microstructure profiling to investigate vertical mixing in the interior Merrimack River plume during a tidal pulse. Multiple stratified shear mixing regimes were identified and evolved with time, including plume layer mixing, nearfield interfacial mixing, and tidal interfacial mixing. The findings highlight the previously unreported tidally modulated mixing within the river plume.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Engineering, Marine
Zhen-qi Li, Guang-nian Li, Lin Du, Hai-peng Guo, Wen-xin Yuan
Summary: This study focuses on the key technologies of hydraulic turbine geometric modeling and reconstruction. The blade element momentum theory is adopted to obtain the distribution of the twist angle and chord of the blade, and a parameterized model of the original rotor is established. Further, the artificial neural network and the Genetic Algorithm (GA) are used to optimize the performance of the original blades. According to numerical simulations based on Computational Fluid Dynamics (CFD), the energy conversion efficiency of the optimized rotor is higher than that of the original rotor, with an improvement of up to 8.5% under the considered blade-tip speed ratios, and the thrust coefficient is significantly increased.
Article
Multidisciplinary Sciences
Hong-Lei Xu, Nikolay Tkachenko, Dariusz W. Szczepanik, Ivan A. Popov, Alvaro Munoz-Castro, Alexander Boldyrev, Zhong-Ming Sun
Summary: Investigating the structural transformations from atomic clusters to bulk materials is challenging. In this study, the authors synthesized and characterized a germanium cluster Ge-24(4-), and found that electron delocalization plays a vital role in its formation and stabilization.
NATURE COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Jin Zhang, Jin Ke, Bing Wang, Ximing Chen
Summary: This study investigates the mechanical responses of HKUST-1 crystals through compression tests. The unique strain avalanches and plastic flow were observed in individual and contacting crystals before their final fracture. The plastic flow with serrations is attributed to the dynamic phase mixing caused by progressive and irreversible local phase transition in HKUST-1 crystals. The pressure-induced phase coexistence in HKUST-1 crystals also leads to a significant loading-history dependence of their Young's modulus. The observation of plastic avalanches in HKUST-1 crystals expands our understanding of the plasticity of MOF crystals and reveals a novel mechanism for avalanches and plastic flow in crystal plasticity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Geosciences, Multidisciplinary
Bieito Fernandez Castro, Marian Pena, Enrique Nogueira, Miguel Gilcoto, Esperanza Broullon, Antonio Comesana, Damien Bouffard, Alberto C. Naveira Garabato, Beatriz Mourino-Carballido
Summary: Research shows that turbulent mixing generated by the swimming activity of marine organisms can be as efficient as geophysical turbulence, enhancing vertical mixing in the ocean. This has significant implications for productive upper ocean regions.
Article
Environmental Sciences
Andrew C. Ross, Raymond G. Najjar, Ming Li
Summary: This study develops and tests a computationally inexpensive statistical model as a surrogate for numerical model simulations of estuarine physics and water quality under future climate conditions. The simulations suggest that future salinity, stratification, and circulation are likely to be higher than present-day averages, with model projections highly sensitive to uncertainty about future tidal amplitudes along the shelf.
ESTUARIES AND COASTS
(2021)
Article
Astronomy & Astrophysics
Andrew C. Ross, Charles A. Stock, Keith W. Dixon, Marjorie A. M. Friedrichs, Raleigh R. Hood, Ming Li, Kathleen Pegion, Vincent Saba, Gabriel A. Vecchi
EARTH AND SPACE SCIENCE
(2020)
Article
Multidisciplinary Sciences
Caroline J. Wiernicki, Michael H. P. O'Brien, Fan Zhang, Vyacheslav Lyubchich, Ming Li, David H. Secor
Article
Environmental Sciences
Fan Zhang, Ming Li, Patricia M. Glibert, So Hyun (Sophia) Ahn
Summary: Harmful dinoflagellate Planktonic Prorocentrum, particularly P. minimum, is on the rise globally. Researchers have developed a three-dimensional mechanistic model to predict the timing and location of P. minimum blooms in Chesapeake Bay, with temperature and nutrient conditions identified as the main factors influencing bloom development.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Adam Schlenger, Elizabeth W. North, Yun Li, Ming Li, W. Michael Kemp
Summary: This study applied the habitat volume model to quantify interannual changes in potential habitat volume for estuarine fish and shellfish, identifying which parameters had the most influence on habitat and which species were most sensitive to environmental variability. Results showed that physiological tolerances and environmental constraints had significant effects on habitat volumes, with salinity and dissolved oxygen being primary constraints for required habitats and salinity and temperature for optimal habitats. Predictive relationships between physiological tolerances and habitat volumes were identified, providing insight into estimating habitat limitation in estuarine systems. This modeling approach has the potential to quantify essential fish habitat and project the impact of climate change and nutrient loading on living resources.
ESTUARIES AND COASTS
(2022)
Article
Limnology
Jianzhong Su, Wei-Jun Cai, Jeremy M. Testa, Jean R. Brodeur, Baoshan Chen, K. Michael Scaboo, Ming Li, Chunqi Shen, Margaret Dolan, Yuan-Yuan Xu, Yafeng Zhang, Najid Hussain
Summary: The study in Chesapeake Bay revealed that despite strong aerobic respiration from May to August, carbonate dissolution was minimal in May and June and substantial in August, buffering pH declines and causing a mismatch between seasonal DO and pH minima. The rate of calcium carbonate dissolution was found to be controlled by the supply of CaCO3 particles rather than the saturation state in bottom water, indicating a novel mechanism for the decoupling of DO and pH in estuarine waters associated with CaCO3.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Limnology
Ming Li, Fan Zhang, Patricia M. Glibert
Summary: Research shows that the seasonal life strategy of Prorocentrum minimum in Chesapeake Bay relies on physical transport by estuarine circulation, with blooms occurring in spring successfully simulated by a hydrodynamic-biogeochemical model that tracked multiple years of life history. The study reveals that overwintering, spring transport, mid-bay bloom development, and downstream transport of decaying populations are key stages of P. minimum, with varying travel times due to differences in estuarine circulation strength throughout the year. May provides an optimal growth window for P. minimum as part of a seasonal succession from winter-spring diatoms to summer dinoflagellates.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Marine & Freshwater Biology
Ming Li, Yuren Chen, Fan Zhang, Yang Song, Patricia M. Glibert, Diane K. Stoecker
Summary: This study developed a model to simulate the mixotrophic growth of Karlodinium veneficum and applied it to Chesapeake Bay. The simulations showed that K. veneficum blooms occurred in the summer and were influenced by prey density and nutrient conditions.
Article
Oceanography
Renjian Li, Ming Li
Summary: This study investigates the generation of internal lee waves in a coastal plain estuary using numerical simulations. It is found that these lee waves can be generated in all salinity regimes, with mode-2 lee waves being the most prevalent. The results also indicate that the amplitude of the lee waves is influenced by the stratification and strength of lateral flows in the estuary.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Renjian Li, Ming Li, Patricia M. Glibert
Summary: This study used a coupled model to investigate the effects of acidification on high biomass harmful algal blooms (HABs) in eutrophic estuaries and projected the impact of increased anthropogenic CO2 on these HABs in the future. The results showed that acidification can moderately enhance the blooms of Prorocentrum minimum in Chesapeake Bay and suggested that similar modeling frameworks can be applied to study the effects of acidification on other HAB species in estuarine and coastal environments.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Wenfei Ni, Ming Li
Summary: Previous analysis revealed the correlation between the expansion of hypoxia in Chesapeake Bay and increased riverine nutrient loading, but the driving processes behind this hypoxia response remained unclear. Using a validated hydrodynamic-biogeochemical model, a simulation was conducted to examine dissolved oxygen levels during a 40-year period of increased nutrient loading. The model successfully reproduced the observed decline in oxygen concentration and expansion of hypoxic volume, with water column respiration identified as the dominant driver of hypoxia expansion.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Ming Li, Yijun Guo, Wei-Jun Cai, Jeremy M. Testa, Chunqi Shen, Renjian Li, Jianzhong Su
Summary: Large eutrophic estuaries with long flushing times may become a greater carbon sink and acidify, while small estuaries with short flushing times are likely to remain a source of carbon to the atmosphere, according to coupled hydrodynamic-biogeochemical model and generalized box model simulations.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Limnology
Yuren Chen, Ming Li, Patricia M. Glibert, Cynthia Heil
Summary: This study investigated the impacts of a pulsed nutrient injection event on plankton community structure in Tampa Bay. The results showed that diatoms initially dominated but declined rapidly due to nutrient exhaustion, while K. brevis thrived under low nutrient conditions. This research provides important insights into the effects of short-term nutrient inputs on marine ecosystems.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Review
Construction & Building Technology
Cindy M. Palinkas, Philip Orton, Michelle A. Hummel, William Nardin, Ariana E. Sutton-Grier, Lora Harris, Matthew Gray, Ming Li, Donna Ball, Kelly Burks-Copes, Meri Davlasheridze, Matthieu De Schipper, Douglas A. George, Dave Halsing, Coraggio Maglio, Joseph Marrone, S. Kyle McKay, Heidi Nutters, Katherine Orff, Marcel Taal, Alexander P. E. Van Oudenhoven, William Veatch, Tony Williams
Summary: This study examines three innovative coastal resilience projects that use nature-based features to improve coastal community resilience. These projects go beyond coastal restoration to provide additional natural benefits. However, there are still many unknowns and challenges in designing and implementing these projects.
FRONTIERS IN BUILT ENVIRONMENT
(2022)
Article
Environmental Sciences
Ming Li, Renjian Li, Wei-Jun Cai, Jeremy M. Testa, Chunqi Shen
FRONTIERS IN MARINE SCIENCE
(2020)