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Journal articles on the topic 'Sediment hopper'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Currey, Rohan J. C., and Robert Poulin. "Do parasites affect burrowing activity and emergence of sand hoppers, Talorchestia quoyana (Amphipoda: Talitridae)?" Canadian Journal of Zoology 85, no. 3 (2007): 344–51. http://dx.doi.org/10.1139/z07-013.

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Sand hoppers (Amphipoda: Talitridae) are semiterrestrial crustaceans that feed upon stranded kelp. Their burrowing behaviour plays an important role in reintroducing nutrients into the sediment. The most abundant sand hopper on New Zealand’s beaches is Talorchestia quoyana Milne-Edwards, 1840. It is host to a parasitic mermithid nematode, Thaumamermis zealandica Poinar, Latham and Poulin, 2002, which invariably kills its sand hopper host by emerging to complete its maturation and reproduction in a moist sand environment. The aim of the present study was to assess if the burrowing behaviour of

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2

Fonias, Efstratios N., Erik van Eekelen, and Barend van den Bosch. "Fine Sediment Dispersion in the Addu-City Dredging and Reclamation Project." Journal of Marine Science and Engineering 13, no. 3 (2025): 489. https://doi.org/10.3390/jmse13030489.

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The matter of the quantification of the fraction of the dredged sediment that is released by a trailing suction hopper dredger into the surrounding waters, also known as the passive phase of the plume during dredging operations through the overflow, is a rather complex process. A number of processes, including sediment settling, propeller wash, and entrapment of air during sediment release, are only a few of the reasons why plumes are formed and sediments because of the overflow are released back into the environment. The present work attempts to examine the empirical considerations used for t

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3

Nichols, Maynard, Robert J. Diaz, and Linda C. Schaffner. "Effects of hopper dredging and sediment dispersion, chesapeake bay." Environmental Geology and Water Sciences 15, no. 1 (1990): 31–43. http://dx.doi.org/10.1007/bf01704879.

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4

van Rijn, L. C. "One-Dimensional Plume Dispersion Modeling in Marine Conditions (SEDPLUME1D-Model)." Journal of Marine Science and Engineering 13, no. 6 (2025): 1186. https://doi.org/10.3390/jmse13061186.

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Dredging of fine sediments and dumping of fines at disposal sites produce passive plumes behind the dredging equipment. Each type of dredging method has its own plume characteristics. All types of dredging operations create some form of turbidity (spillage of dredged materials) in the water column, depending on (i) the applied method (mechanical grab/backhoe, hydraulic suction dredging with/without overflow), (ii) the nature of the sediment bed, and (iii) the hydrodynamic conditions. A simple parameter to represent the spillage of dredged materials is the spill percentage (Rspill) of the initi

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5

SHIMOKAWA, Yoshikazu, Akihiro OKUDA, Tadashi FURUMIYA, Toru INABA, Kaori OHSHMA, and Hiroshi KUNISU. "THE PREDICTION SYSTEM OF SEDIMENT DISCHARGING SOIL FOR HOPPER-BARGE WITH BOTTOM DOORS." PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN 18 (2002): 635–40. http://dx.doi.org/10.2208/prooe.18.635.

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6

Shen, Nan, Zhanli Wang, Fengbao Zhang, and Chunhong Zhou. "Response of Soil Detachment Rate to Sediment Load and Model Examination: A Key Process Simulation of Rill Erosion on Steep Loessial Hillslopes." International Journal of Environmental Research and Public Health 20, no. 4 (2023): 2839. http://dx.doi.org/10.3390/ijerph20042839.

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The rate of soil detachment by water flow indicates soil erosion intensity directly. The exact relation between soil detachment rate and actual sediment load in water flow, however, is still unclear, and the existing relationships have not been adequately tested. The aims of the present study were to investigate the response of soil detachment rate to sediment load using rill flume data with loessial soil and to quantitatively examine the soil detachment equations in the WEPP and EUROSEM soil erosion models. Six slopes were combined with seven flow discharges to measure detachment rates under

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7

Dai, Wenhong, Wei Ding, Chuanteng Lu, Xiaofeng Luo, and Qiancheng Xie. "Field Investigations of Underwater Mounds Formed by Hopper Dredge Discharges in a Coastal Environment." Journal of Marine Science and Engineering 8, no. 6 (2020): 395. http://dx.doi.org/10.3390/jmse8060395.

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In a coastal environment, this paper investigated the formation process and the cumulative shape of subaqueous mounds formed by hopper dredged discharges. Hydrological observations and field tests were performed to examine the flow features and ultimately generated morphology characteristics. A high-precision digital elevation model (DEM) was established by multi-beam depth sweeping (MBDS) in the experiment. Particular attention was paid to the formation of the mounds, the three-dimensional shape and the influence factors. The field measurements showed that the mounds were roughly symmetrical

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8

Bisschop, Frederik, Paul Visser, Cees Van Rhee, and Henk Jan Verhagen. "EROSION DUE TO HIGH FLOW VELOCITIES: A DESCRIPTION OF RELEVANT PROCESSES." Coastal Engineering Proceedings 1, no. 32 (2011): 24. http://dx.doi.org/10.9753/icce.v32.sediment.24.

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Convential models for the erosion of non-cohesive sediments overestimate the erosion rate induced by high flow velocities. These high flow velocities occur, for instance, in breaching of embankments or dunes (flow velocities up to 10 m/s) or in jetting sand with a trailing suction hopper dredger (30 to 60 m/s). At these very large flow velocities the erosion process is significantly influenced by the properties of the soil mass (non-cohesive particles). Governing parameters at higher flow velocities are dilatancy, permeability and the (un)drained shear strength of the soil. The sediment concen

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9

NISHIYAMA, Yasuhiro, Toru INABA, Tsuneharu ORIHASHI, and Kazuyoshi HOKKYO. "THE HYDRAULIC MODEL EXPERIMENT OF SEDIMENT DISCHARGING SOIL FOR DUMPING HOPPER BARGE WITH BOTTOM DOORS." PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN 18 (2002): 629–34. http://dx.doi.org/10.2208/prooe.18.629.

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10

Kana, Timothy W., and Haiqing Liu Kaczkowski. "PLANNING, PRELIMINARY DESIGN, AND INITIAL PERFORMANCE OF THE NAGS HEAD BEACH NOURISHMENT PROJECT." Coastal Engineering Proceedings 1, no. 33 (2012): 109. http://dx.doi.org/10.9753/icce.v33.sediment.109.

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A 3.5 million cubic meter beach nourishment project was completed along 16 kilometers of shoreline at Nags Head, North Carolina, 32 kilometers south of the US Army Corps of Engineers Field Research Facility at Duck. The project is the largest locally-funded nourishment accomplished to date in the United States. Three ocean-certified hopper dredges and one cutterhead suction dredge constructed the project between May and October 2011. This paper discusses the planning, design, and initial performance of the project. Nags Head is exposed to high waves from the northeast which generate net southe

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11

Lavallée, Daniel, and Claude Marche. "Déversements turbulents de matériau granulaire en eau libre. I. Observations en laboratoire." Canadian Journal of Civil Engineering 22, no. 3 (1995): 480–87. http://dx.doi.org/10.1139/l95-056.

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Capping of contaminated sediment with clean granular material is a commonly used mitigative measure. The capping material is often dispersed from the end of a pipeline or dumped down a chute. Such methods require special equipment that is sometimes costly. The possibility of using a hopper barge to place the material was thus explored. Laboratory tests were conducted to study bottom distribution of granular material placed in this way. Distribution is determined at the moment of impact. To identify the mechanisms at work at the moment of impact, tests were conducted with different bottom slope

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12

Smith, S. Jarrell, and Carl T. Friedrichs. "Size and settling velocities of cohesive flocs and suspended sediment aggregates in a trailing suction hopper dredge plume." Continental Shelf Research 31, no. 10 (2011): S50—S63. http://dx.doi.org/10.1016/j.csr.2010.04.002.

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13

Verbeek, H., and JM Cornelisse. "Consolidation of dredged sludge, measured by an acoustic densitometer." Marine and Freshwater Research 46, no. 1 (1995): 179. http://dx.doi.org/10.1071/mf9950179.

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A field study was conducted on the Cromstrijen dump site in the Rhine-Meuse estuary to find the risks of open-water dumping by estimating the impact effects and spreading of freshly deposited sludge and the consolidation of dumped material. The site is used to dump sludge of acceptable quality from maintenance dredging of waterways and local harbours. The investigated sludge came from a navigation channel and was dredged and transported by a hopper dredge. On the dump site, a small section was marked in which the dump took place. A field version of an existing laboratory acoustic densitometer

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14

de Wit, Lynyrd, A. M. Talmon, and C. van Rhee. "3D CFD simulations of trailing suction hopper dredger plume mixing: A parameter study of near-field conditions influencing the suspended sediment source flux." Marine Pollution Bulletin 88, no. 1-2 (2014): 47–61. http://dx.doi.org/10.1016/j.marpolbul.2014.08.043.

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15

Lu, Jingsheng, Yuanxin Yao, Dongliang Li, et al. "A hydrate reservoir renovation device and its application in nitrogen bubble fracturing." Geoscientific Instrumentation, Methods and Data Systems 13, no. 1 (2024): 75–83. http://dx.doi.org/10.5194/gi-13-75-2024.

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Abstract. Natural gas hydrate (GH) is a significant potential energy source due to its large reserves, wide distribution, high energy density, and low pollution. However, the gas production rate of past gas hydrate production tests is much lower than the requirement of commercial gas production. Reservoir stimulation technologies like hydraulic fractures provide one potential approach to enhance gas production from GH. The reservoir reformation behavior of the hydrate-bearing sediments (HBSs), particularly sediments with a high clay content, is a complex process during a hydraulic fracturing o

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16

Popoff, Nadège, Renaud Jaunatre, Caroline Le Bouteiller, Margot Trinquier, Yoan Paillet, and André Evette. "Ecological succession and fine sediment accretion influence local patch dynamics of a pioneer riparian species ( Typha minima Hoppe)." Freshwater Biology 66, no. 12 (2021): 2351–63. http://dx.doi.org/10.1111/fwb.13837.

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17

Sarjeant, William A. S. "Henry Hopley White (1790–1877) and the early researches on Chalk “Xanthidia” (marine palynomorphs) by Clapham microscopists." Journal of Micropalaeontology 10, no. 1 (1991): 83–93. http://dx.doi.org/10.1144/jm.10.1.83.

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Abstract. In the mid-nineteenth century, a group of microscopists centred in Clapham, London, made significant early contributions to our knowledge of the fossils then known as ‘Xanthidia’ (and now known to include dinoflagellates, acritarchs and prasinophytes), describing or illustrating many types and formulating far-reaching conclusions concerning their physical character and distribution in sediments. Prominent among them was Henry Hopley White (1790–1877), London barrister and amateur microscopist. An account of White’s life is presented and the morphology and present systematic placement

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18

Piepiórka-Stepuk, Joanna. "Impact of Caustic Soda Solution Temperature on Efficiency of its Cleaning on Solid Sediments After Completed Process of Cleaning in CIP System of Brewing Unit." Agricultural Engineering 22, no. 2 (2018): 79–89. http://dx.doi.org/10.1515/agriceng-2018-0018.

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AbstractThe paper presents the results of analysis concerning the impact of temperature on sedimentation in the caustic soda solution that constitute a contamination after the process of cleaning utensils and pipes for hopped wort transport in the brewery. The solution was collected from the production plant after the process of cleaning and subjected to 12-hour sedimentation and changes of the solid particles participation, their size and percentage share in the solution was determined. The study was carried out with the Shadow Sizing method. The results were subjected to statistical analysis

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19

Kwon, Yong Min, Donghee Choi, Sung-Hyun Yang, Kae Kyoung Kwon, and Sang-Jin Kim. "Hoppeia youngheungensis gen. nov., sp. nov., a member of the Flavobacteriaceae isolated from tidal flat sediment, and emended descriptions of the genus Sediminibacter and Sediminibacter furfurosus." International Journal of Systematic and Evolutionary Microbiology 64, Pt_6 (2014): 2053–59. http://dx.doi.org/10.1099/ijs.0.061721-0.

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A Gram-reaction-negative, proteorhodopsin-containing, yellow-pigmented, rod-shaped, non-gliding and strictly aerobic bacterium, designated strain YIK12T, was isolated from tidal flat sediment of Yeongheung Island at the coast of the West Sea of Korea. Cells produced non-diffusible carotenoid pigments, but not flexirubin-type pigment. Phylogenetic analyses based on 16S rRNA gene sequences indicated that the isolate was affiliated to the family Flavobacteriaceae and showed highest similarity to Sediminibacter furfurosus MAOS-86T (93.3 %). Growth was observed at 24–44 °C (optimum 30 °C), at pH 6.

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20

de Wit, Lynyrd, Cees van Rhee, and Arno Talmon. "Influence of important near field processes on the source term of suspended sediments from a dredging plume caused by a trailing suction hopper dredger: the effect of dredging speed, propeller, overflow location and pulsing." Environmental Fluid Mechanics 15, no. 1 (2014): 41–66. http://dx.doi.org/10.1007/s10652-014-9357-0.

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21

B., R. Madushan, B. Navaratne S., and Wickramasinghe I. "Preservation of Coconut Toddy Sediments as a Leavening Agent for Bakery Products." June 3, 2015. https://doi.org/10.5281/zenodo.1107057.

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Toddy sediment (TS) was cultured in a PDA medium to determine initial yeast load, and also it was undergone sun, shade, solar, dehumidified cold air (DCA) and hot air oven (at 400, 500 and 60oC) drying with a view to preserve viability of yeast. Thereafter, this study was conducted according to two factor factorial design in order to determine best preservation method. Therein the dried TS from the best drying method was taken and divided into two portions. One portion was mixed with 3: 7 ratio of TS: rice flour and the mixture was divided in to two again. While one portion was kept under in h

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22

Maksum, Rakhman Silvika, Nurhakim Nurhakim, and Riswan Riswan. "OPTIMASI PENGELOLAAN STOCKROM-STOCKPILE SERTA SIMULASI PENANGANAN TUMPUKAN BATUBARA DI STOCKROM." Jurnal GEOSAPTA 2, no. 1 (2017). http://dx.doi.org/10.20527/jg.v2i1.4206.

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Permasalahan yang sering terjadi pada perusahaan pertambangan ketika produksi batubara mengalami hambatan salah satunya adalah dampaknya tumpukan batubara di stockROM terlalu lama tertimbun dan meninggi. Salah satu opsi penanganan adalah segera mengolah batubara lama yang masih ekonomis dan mencampurnya dengan batubara baru (homogenisasi). Selain itu manajemen terhadap proses produksi dan kontrol kualitas seperti tata ruang, pengelolaan air penjadwalan dan penempatan unit penunjang serta skema penumpukan juga masih belum optimal.Penelitian dilakukan berdasarkan data aktual produksi pada bulan

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23

Dartez, Steve, Brett Borne, and Michael Poff. "Turning a tragedy into large-scale barrier island restoration in Louisiana: A three-project case study." Shore & Beach, March 15, 2020, 58–64. http://dx.doi.org/10.34237/1008818.

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Louisiana has successfully utilized the proceeds from the fines imposed for the Deepwater Horizon incident to significantly jump start barrier island restoration as identified in the Coastal Protection and Restoration Authority (CPRA) of Louisiana Coastal Master Plan (CPRA 2017). The Riverine Sand Mining/ Scofield Island Restoration (BA-40) project was the first to be implemented through a commitment of remaining funds in the initial emergency protective berms’ construction budget formulated into the Berms to Barrier Islands plan. The berm/ restoration conversion at Scofield Island was the fir

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