Article
Engineering, Ocean
B. Deng, W. Zhang, H. S. Tang, C. B. Jiang, X. J. Liu
Summary: This study experimentally investigates the hydrodynamics and sediment transport caused by dam-break waves in the swash zones of three sandy beaches. The results show that the uniformity of sand particle sizes plays a crucial role in the hydraulic behavior, bedform evolution, bedload transport, and sand particle migration.
APPLIED OCEAN RESEARCH
(2022)
Article
Engineering, Marine
Dongzi Pan, Ying Li
Summary: This study analyzed the scouring characteristics around a spur dike induced by tidal bores through field observation and model experiments. The results show that the scours around a spur dike can be divided into dike head scour and upstream side scour. The study provides fitting formulas for estimating the scour depth and has important implications for the construction and maintenance of spur dikes in estuarine and marine environments.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Geography, Physical
Leslie A. Valentine, Carol A. Wilson
Summary: The Ganges-Brahmaputra-Meghna (GBM) delta is identified as one of the most vulnerable sinking deltas in the world. It is highly dynamic with the highest sediment and water discharge, as well as significant tidal velocities. Rapidly evolving tidally elongated channel bars, called 'chars', are found along the Lower Meghna River (LMR), which is crucial for understanding the vulnerability of char communities to flooding and sea-level rise. A multi-faceted approach was used to assess the geomorphology, sedimentology, and hydrology of chars in the LMR and Tentulia Channel, revealing increased stability downstream due to tidal influence and vulnerability to erosion and flooding near the coast.
Article
Geology
Massimiliano Ghinassi, Oriol Oms, Marta Cosma, Alvise Finotello, Giovanni Munari
Summary: This study investigates Late Maastrichtian meandering-channel deposits in the Southern Pyrenees, Spain, revealing signs of tidal processes and providing crucial insights into the control of sedimentation by tides in inland areas.
Article
Multidisciplinary Sciences
Paola Muttathukunnel, Patrick Frei, Sarah Perry, Dion Dickman, Martin Mueller
Summary: Robust neural information transfer relies on the delicate molecular nano-architecture of chemical synapses. This study reveals the alignment of presynaptic nanorings with postsynaptic glutamate receptor rings and the formation of nanocolumn rings by presynaptic proteins and glutamate receptors. The impairment of glutamate receptors triggers the formation of transsynaptic nanocolumns on a minute timescale during homeostatic plasticity. This research uncovers the regulatory mechanism of synaptic nano-architecture and highlights its importance in stabilizing synaptic transmission.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Geology
Monica Oliveira Manna, Claiton Marlon dos Santos Scherer, Manoela Bettarel Ballico, Adriano Domingos dos Reis, Lucas Vargas Moraes, Lorenza Augusta Belitzki Ferrari, Henrique Berger Roisenberg, Victor Gualberto de Oliveira
Summary: Based on field data from the Jaicos Formation in NE Brazil, this study analyzes the architecture and changes in fluvial deposition, identifying two distinct fluvial units with different flow regimes. Fluvial unit 1 represents a system with low discharge variability, while unit 2 represents a system with high discharge variability.
SEDIMENTARY GEOLOGY
(2021)
Review
Geosciences, Multidisciplinary
David M. Hodgson, Jeff Peakall, Katherine L. Maier
Summary: Observations from the modern seafloor have led to investigations into sediment gravity flow behavior at the mouth of submarine channels. These investigations have revealed various types of channel mouth configurations, including traditional channel-lobe transition zones, plunge pools, and channel mouth expansion zones. Understanding the morphodynamic differences between these configurations requires a review of physical experiments, field observations, and numerical modeling. Additionally, the identification of the stratigraphic record of channel mouth settings is complicated by the propagation and avulsion of channels.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geology
Brennan O'Connell, Rebecca J. Dorsey, Stephen T. Hasiotis, Ashleigh V. S. Hood
Summary: This study presents sedimentological and ichnological data from the Bouse Formation, which accumulated during regional transgression near the north end of the ancestral Gulf of California. The study provides evidence for a late Miocene to early Pliocene humid climate in southwestern North America, with significant facies variability at different scales documented in mixed carbonate-siliciclastic deposits.
Article
Engineering, Marine
Mubashir Mehmood, Abbas Ali Naseem, Maryam Saleem, Junaid ur Rehman, George Kontakiotis, Hammad Tariq Janjuhah, Emad Ullah Khan, Assimina Antonarakou, Ihtisham Khan, Anees ur Rehman, Syed Mamoon Siyar
Summary: An integrated study was conducted to examine the facies architecture and depositional environment of the Cretaceous Pab Formation in Pakistan. The research focused on analyzing architectural elements and facies, which are not commonly studied in the region. By interpreting these elements, a better understanding of the depositional history and reservoir distribution was gained.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Environmental Sciences
Xue Ping, Yang Xian, Menggui Jin
Summary: This study investigated the impact of bedform migration on nitrate removal in heterogeneous sediments using numerical models. The results showed that mobile bedforms create fluctuations in exchange flux, reducing the penetration depth and residence time of solutes, and resulting in decreased denitrification rate. A larger bedform celerity and a smaller silt fraction led to lower NO3- removal efficiency.
WATER RESOURCES RESEARCH
(2022)
Article
Geology
Jon J. Smith, Brian F. Platt
Summary: The late Miocene Ogallala Formation constitutes a significant portion of the High Plains aquifer in North America, mainly located in the central High Plains region. However, there is limited research on this formation in this particular area. In western Kansas, the Ogallala Formation is well-exposed along the bluffs of Ladder Creek Canyon, with a thickness of up to 40 meters. It consists of stacked and laterally extensive sandy channel bodies, indicating the presence of braided river systems.
SEDIMENTARY GEOLOGY
(2023)
Article
Marine & Freshwater Biology
Hao Hu, Zhongyong Yang, Daowei Yin, Heqin Cheng, Daniel R. Parsons
Summary: This study presents two surveys conducted in the Changjiang Estuary, analyzing flow and bedform dynamics at different water/flow stages. The results show the impact of compound dunes on flow structure and the significant role of low-angle dunes in bedload transport. Additionally, the deformation of low-angle dunes plays a crucial role in bedload transport, highlighting its importance in migration and deformation studies.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Geology
George Postma, Joerg Lang, David C. Hoyal, Juan J. Fedele, Timothy Demko, Vitor Abreu, Keriann H. Pederson
Summary: This study investigates the complex bedform architecture of a deep-water delta slope, highlighting the intricacies of deposition in the channel-lobe transition zone which are often overlooked in complex sedimentary systems. The research utilizes a method developed for fluvial deposits to analyze high-definition, drone-derived images for architectural and facies studies, revealing the migration of hydraulic jump zones and the stacking of bedforms in the transition zone.
Article
Environmental Sciences
Yu Ma, Yoshiki Saito, Thi Kim Oanh Ta, Yue Li, Qinglu Yao, Chao Yang, Van Lap Nguyen, Marcello Gugliotta, Zhanghua Wang, Ling Chen
Summary: Limited information is available about organophosphate esters (OPEs) in sediments of the Dong Nai River System in Vietnam and the study found that human activities and fluvial-tidal interactions significantly influence the distribution of OPEs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Oceanography
Steven L. Dykstra, Brian Dzwonkowski, Raymond Torres
Summary: This study investigates the effects of variable river discharge on tide-river interactions in a low-energy tidal environment. The results show that river events amplify tides in seaward regions and attenuate tides in landward regions, creating a region of river-induced peak amplitude seaward of the flood limit. River discharge has a greater impact on tidal currents than water levels, leading to a dynamic phase lag. The longitudinal shifts of river impacts on tides can be estimated analytically using the ratio of river discharge to tidal discharge and the geometric convergence of the system.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Geosciences, Multidisciplinary
Aitor A. Ichaso, Robert W. Dalrymple, Allard W. Martinius
Article
Geology
Christian Haug Eide, John A. Howell, Simon J. Buckley, Allard W. Martinius, Bjorn Terje Oftedal, Gijs A. Henstra
Article
Geosciences, Multidisciplinary
A. W. Martinius, M. Fustic, D. L. Garner, B. V. J. Jablonski, R. S. Strobl, J. A. MacEachern, S. E. Dashtgard
MARINE AND PETROLEUM GEOLOGY
(2017)
Article
Geosciences, Multidisciplinary
J. H. van den Berg, A. W. Martinius, R. Houthuys
MARINE AND PETROLEUM GEOLOGY
(2017)
Article
Geology
Stuart Gowland, Andrew M. Taylor, Allard W. Martinius
Correction
Geosciences, Multidisciplinary
J. H. van den Berg, A. W. Martinius, R. Houthuys
MARINE AND PETROLEUM GEOLOGY
(2018)
Article
Geosciences, Multidisciplinary
J. M. Ahokas, J. P. Nystuen, A. W. Martinius
MARINE AND PETROLEUM GEOLOGY
(2014)
Review
Geosciences, Multidisciplinary
J. Peeters, K. M. Cohen, C. Thrana, F. S. Busschers, A. W. Martinius, E. Stouthamer, H. Middelkoop
EARTH-SCIENCE REVIEWS
(2019)
Article
Geosciences, Multidisciplinary
Milovan Fustic, Rudy Strobl, Martin Fowler, Bryce V. Jablonski, Allard W. Martinius
MARINE AND PETROLEUM GEOLOGY
(2019)
Article
Geosciences, Multidisciplinary
Wang Youwei, Joep E. A. Storms, Allard W. Martinius, Derek Karssenberg, Hemmo A. Abels
Summary: Alluvial stratigraphy formation is influenced by both autogenic processes and external forcing. Research shows that cyclic patterns can be observed in the formation of alluvial successions. Modeling studies suggest that cyclic alluvial stratigraphic patterns occur when there is cyclicity in the ratio of sediment supply over water discharge.
Article
Geology
Hiranya Sahoo, M. Royhan Gani, Nahid D. Gani, Gary J. Hampson, John A. Howell, Joep E. A. Storms, Allard W. Martinius, Simon J. Buckley
Article
Geology
Youwei Wang, Timothy F. Baars, Hiranya Sahoo, Joep E. A. Storms, Allard W. Martinius, Philip Gingerich, Hemmo A. Abels
Summary: A high-resolution study of the Lower Eocene Willwood Formation in the Bighorn Basin, Wyoming, USA, reveals the presence of four different river planform styles, with braided-like and sinuous-like channels being the most dominant types. The study supports existing basin-scale depositional models that suggest river supply mainly comes from the west and may be influenced by paleoclimate changes.
Article
Geology
Helena van der Vegt, Joep E. A. Storms, Dirk-Jan R. Walstra, Kjetil Nordah, Nick C. Howes, Allard W. Martinius
DEPOSITIONAL RECORD
(2020)
Article
Geosciences, Multidisciplinary
Allard W. Martinius
Proceedings Paper
Geology
Juha M. Ahokas, Johan P. Nystuen, Allard W. Martinius
FROM DEPOSITIONAL SYSTEMS TO SEDIMENTARY SUCCESSIONS ON THE NORWEGIAN CONTINENTAL MARGIN
(2014)