Article
Engineering, Marine
Jae-Soon Jeong, Seung-Buhm Woo, Han Soo Lee, Bon-Ho Gu, Jong Wook Kim, Jin Il Song
Summary: This study investigated the flow patterns and affecting factors in the North Port of Incheon, South Korea, and found that tidal currents, river discharge, surface winds, and atmospheric pressure play important roles in the circulation characteristics of the port. The study also discovered that strong stratification occurs during spring tide in the inner port, leading to changes in water composition. These findings are significant for understanding the inner-port circulation and mass transport mechanisms.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Shi Ren, Bangwen Zhang, Wei-Jie Wang, Yuan Yuan, Chao Guo
Summary: Through measures like upstream sediment trapping and sediment peak regulation, the incoming sediment load of TGR has been significantly reduced, successfully addressing sedimentation issues and providing valuable lessons for reservoir management elsewhere.
Article
Marine & Freshwater Biology
Shang-Shu Shih, Ting-Yu Cheng
Summary: The tidal channels and mudflats in estuarine wetlands are ecologically important for aquatic organisms and nutrient exchange. This study established a geomorphological model to understand their dynamics. The model was validated in the Tanshui River estuary, and findings revealed that soil properties and erosion rate were the most influential factors. The asymmetry between ebb and flood tides contributed to the maintenance of tidal channels. River floods transported sediment and accelerated wetland siltation. Reduced tidal range and suspended sediment input were effective measures to prevent channel deposition.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Engineering, Civil
Andhy Romdani, Jia-Lin Chen, Hwa Chien, Jing-Hua Lin, Chuan-Kai Hung, Yu-Qi Huang
Summary: The mechanisms controlling sediment transport at river mouths and estuaries nearby ports are complex interactions among waves, tidal currents, and river flows over complex bathymetry. Episodic river discharge triggered by large rainfall may contribute to significant sediment into the ocean. Previous field observations suggest that fine-grained sediments settled rapidly near the river mouth after a typhoon, with tidal currents and strong wind-driven waves during winter being the mechanisms that transported sediment toward the navigational channel. Numerical simulations provide insights into the patterns of residual circulations for a range of spring-neap tidal forces and wave conditions, showing that extending North Jetty could be an engineering countermeasure to modify the circulation system between the port and the river mouth to mitigate the siltation problem.
JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING
(2022)
Article
Engineering, Civil
Oliver Lojek, Nils Goseberg, Torsten Schlurmann
Summary: The macrotidally influenced harbor of Dagebull on the North Sea coast of Germany features a piled south jetty, for which provided constructive designs are investigated regarding their potential hydro-morphological impacts on the harbor area and adjacent navigational channel. A comprehensive field study, numerical model cascade, and measurements reveal tidally governed alternating flow pattern and sea floor grain sorting. The study aims to identify preferable jetty designs for optimal harbor maintenance and navigation.
JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING
(2021)
Article
Environmental Sciences
Dohyeong Kim, Jeongil Ko, Joohee Jo, Jongseong Ryu, Kyungsik Choi
Summary: The research found that both natural and anthropogenic influences affect the morphological changes of tidal flats near the Saemangeum dike on the west coast of Korea. Man-made activities have led to overall erosion despite seasonal sedimentation patterns. The consequences include sustained erosion caused by the dike, heavy rainfalls in summer promoting erosion, and mud deposition from intensive dredging activity affecting sedimentology and benthic community stability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Jiarui Qi, Yige Jing, Chao Chen, Jinfeng Zhang
Summary: This paper utilizes the FVCOM-SWAN wave-current-sediment model to simulate the tidal current, wave, and suspended sediment concentration (SSC) in the sea area near Weifang Port, China. By introducing a modified sediment-settling-velocity formula, the SSCs calculated by the modified model are shown to be closer to the measured data compared to the original model. The results indicate that the modified model can effectively describe the hydrodynamic characteristics and sediment movement in the study area.
Article
Environmental Sciences
Sun Min Choi, Jun Young Seo, Seong Woon Jeong, Moo Joon Lee, Ho Kyung Ha
Summary: The study revealed that the rapid growth of Spartina on the tidal flat led to the complexity of the salt marsh zone, affecting hydrodynamics and sediment processes. The stems and leaves could effectively trap fine-grained sediments, resulting in significant differences in bed elevation between the two sites. Flocculation of suspended sediments in Spartina communities was mainly controlled by stem-scale turbulence.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Ecology
Adi Nugraha, Tarang Khangaonkar, David Michalsen, Scott Brown
Summary: This study assesses the performance of navigation features in the Snohomish River estuary and proposes alternative solutions for dredging and maintenance needs based on hydrodynamic and sediment transport models. The results indicate that modifying in-channel sedimentation is feasible, but sediment exclusion measures may be required for off-channel marinas.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Ecology
S. Abdul Azeez, K. R. Muraleedharan, C. Revichandran, Sebin John, G. Seena, Ravikumar C. Nair, K. S. Arya, K. Sudheesh, M. P. Prabhakaran
Summary: This study investigated the sediment spill plume movement during dredging/dumping operations at the Old Mangalore port and recommended conducting dredging operations during the ebb tide to protect the mangrove ecosystem.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Jouni Salmela, Saija Saarni, Linnea Blafield, Markus Katainen, Elina Kasvi, Petteri Alho
Summary: This study investigated sedimentation differences between two distinctive cold seasons in a coastal area of the Northern Baltic Sea, showing that sedimentation accumulation rate was nearly three times higher during the warmer cold season characterized by higher precipitation and open water conditions compared to the regular cold season. Sediment composition and grain size also varied between the two seasons, with warmer season sediments having a larger amount of organic matter accumulation. Sedimentation differences were linked to precipitation, river flow, wind-induced resuspension, and low air pressure system forcing sea level changes.
Article
Environmental Sciences
Cui Shi, Haijun He, Zhen Xia, Huayang Gan, Qiao Xue, Zhenang Cui, Jianyao Chen
Summary: The assessment of the implementation effect of the residual disaster plan of Oxfam International by using the precious rice variety (Glumin purple glutinous rice No. 4) showed a positive effect on improving food security and economic income of the residents in the disaster-stricken area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Civil
Andhy Romdani, Jia-Lin Chen, Hwa Chien, Jing-Hua Lin, Ching-Yuan Liao, Cheng-Chien Hou
Summary: This study describes the dispersal of riverine sediments in mesotidal conditions, including transport processes of sediments via river plumes, initial deposition, resuspension, and long-term net accumulation. Our results revealed that the distribution of suspended sediment concentration (SSC) and the transport process of the river plume was markedly modulated by tidal currents in a north-south direction.
JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING
(2023)
Article
Geology
Derek Richards, Kory Konsoer, Eddy Langendoen, Mick Ursic, Jose Constantine
Summary: This study focuses on the formation of meander cutoffs and oxbow lakes in fluvial landscapes, as well as the sedimentological processes occurring during these formations. The research findings show a different deposition pattern post-cutoff compared to previous studies, revealing new insights into the processes involved.
Article
Environmental Sciences
Qing Luo, Congcong Wang, Leiyan Gu, Zhongping Wu, Yujie Li
Summary: The historical trends and inventory of organophosphate esters (OPEs) in sediment cores from the tidal flat of the Liao River estuary in northeastern China were investigated. The concentration of n-ary sumation 13OPEs in the sediment cores has shown a continuous increase since records began, with a peak in the 1960s, a decline in the 1980s, and a subsequent rise in the 2000s. Tributyl-n-phosphate was found in each layer of the sediment cores, accounting for a significant portion of the total OPEs. The study provides important insights into the contamination trends of OPEs in Chinese sediments and its environmental risks.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Steven Miguel Figueroa, Guan-hong Lee, Hyun-Jung Shin
Article
Geosciences, Multidisciplinary
Samantha C. Carter, Elizabeth M. Griffith, Peter D. Clift, Howie D. Scher, Timothy M. Dellapenna
GEOLOGICAL MAGAZINE
(2020)
Article
Environmental Sciences
Timothy M. Dellapenna, Christena Hoelscher, Lisa Hill, Mohammad E. AlMukaimi, Anthony Knap
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Geosciences, Multidisciplinary
Joseph A. Carlin, Kathryn M. Schreiner, Timothy M. Dellapenna, Andrew McGuffin, Richard W. Smith
Summary: This study investigated event sedimentation within the Texas Mud Blanket (TMB) and identified several potential event deposits, highlighting the TMB as a potential archive for event deposits over multiple years. The event-dominated sedimentation regime enhances long-term carbon burial, potentially increasing current estimates of carbon burial significantly in distal shelf depocenters. The role of distal shelf depocenters as organic carbon burial hotspots may expand in the future with increasing intensity and frequency of extreme events due to climate change.
Correction
Environmental Sciences
Krisa Camargo, Jose L. Sericano, Sharmilla Bhandari, Christena Hoelscher, Thomas J. McDonald, Weihsueh A. Chiu, Terry L. Wade, Timothy M. Dellapenna, Yina Liu, Anthony H. Knap
MARINE POLLUTION BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
E. Wurgaft, Z. A. Wang, J. H. Churchill, T. Dellapenna, S. Song, J. Du, M. C. Ringham, T. Rivlin, B. Lazar
Summary: The study investigated the effects of heterogeneous reactions between river-borne particles and the carbonate system in the plumes of the Mississippi and Brazos rivers. The results showed significant removal of dissolved inorganic carbon (DIC) and total alkalinity (TA) due to these reactions, with heterogeneous reactions accounting for a significant fraction of DIC and TA removal in the plume waters. Laboratory experiments confirmed these findings, suggesting that heterogeneous reactions may be an important controlling mechanism of the seawater carbonate system in particle-rich coastal areas.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Ecology
Ian P. Davis, Timothy M. Dellapenna, Gary E. Maale, Francis P. Gelwick, Frederick C. Weltz, Randall W. Davis
Summary: Identifying factors influencing animal population density can help understand spatial and temporal variations and determine when a population reaches carrying capacity K due to food resources. This study estimated K for Simpson Bay, Alaska based on prey abundance and sea otters' consumption, suggesting sea otters have reached K. Understanding population regulation factors is complex and requires long-term monitoring for complete resolution.
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
(2021)
Article
Environmental Sciences
Jiabi Du, Kyeong Park, Christine Jensen, Timothy M. Dellapenna, Weifeng G. Zhang, Yong Shi
Summary: Under a warming climate, extreme precipitation events are projected to increase, posing threats to coastal ecosystems. Hurricane Harvey caused a significant increase in oyster mortality in Galveston Bay, with low-salinity exposure identified as the main cause. The study highlights the vulnerability of coastal ecosystems to extreme events and the importance of considering climate change impacts on oyster reefs globally.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Nicole Schmidt, Timothy Dellapenna, Peng Lin
Summary: The study found that the age and proportion of newly suspended sediments in the bay vary with location, potentially being carried away by cold fronts. Suspended sediments with longer residence times may increase the exposure time of living organisms to contaminants.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Amanda M. Lopez, Jessica N. Fitzsimmons, Hannah M. Adams, Timothy M. Dellapenna, Alan D. Brandon
Summary: Galveston Bay is an anthropogenic-influenced estuary with high concentrations of heavy metals in sediment, especially in the eastern bay. Temporal variations in sediment metal concentrations are primarily controlled by river discharge, with stable levels of some metals in the 20th century and increasing levels of others in recent years.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Krisa Camargo, Mary Ann Vogelbein, Jennifer A. Horney, Timothy M. Dellapenna, Anthony H. Knap, Jose L. Sericano, Terry L. Wade, Thomas J. McDonald, Weihsueh A. Chiu, Michael A. Unger
Summary: This study tested the field application of the KinExA Inline Biosensor in characterizing the PAH profiles of soils and sediments in Galveston Bay and the Houston Ship Channel (GB/HSC) and in the Elizabeth River. The biosensor showed potential for future DR2 efforts in characterizing PAH contamination and aiding in prioritization of environmental sample analysis.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Timothy M. Dellapenna, Christena Hoelscher, Lisa Hill, Lindsay Critides, Victoria Salgado (Bartlett), Mason Bell, Mohammad E. Al Mukaimi, Jaibi Du, Kyeong Park, Anthony H. Knap
Summary: Hurricane Harvey caused massive flooding of the Texas coast, leading to the deposition of significant amounts of sediment and mercury into Galveston Bay and its tributaries. The slow release of floodwaters from reservoirs resulted in prolonged trapping and dispersal of contaminants, highlighting the potential long-term impacts of such events on urban estuaries worldwide.
ESTUARIES AND COASTS
(2022)
Article
Environmental Sciences
Krisa Camargo, Jose L. Sericano, Sharmilla Bhandari, Christena Hoelscher, Thomas J. McDonald, Weihsueh A. Chiu, Terry L. Wade, Timothy M. Dellapenna, Yina Liu, Anthony H. Knap
Summary: The study found a slight increase in PAH concentrations in sediment post-Hurricane Harvey in Galveston Bay and the Houston Ship Channel, with combustion as the likely source. While none of the detected PAHs exceeded Sediment Quality Guideline values, further attention is needed on changes in different sources of pollution.
MARINE POLLUTION BULLETIN
(2021)