Modeling of Hydrodynamics and Sediment Transport in the Mekong Delta

Thanh, Quoc VO

doi:10.1201/9781003193913

Cited by 3 publications

(3 citation statements)

References 148 publications

(411 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Thomson & Harris [38], Tse should be taken to be the typical period of the measured wave height. The extreme high wave conditions were taken from the study of Hung et al [39] with Hse = 3 m and Tse = 7 s, respectively. Substituting Hse and Tse to Equation Table 2 contains the initial values employed for computing the shoreline position in 1991.…”

Section: Application Of Analytical Solutions For Shoreline Changementioning

confidence: 99%

Coastal Erosion Caused by River Mouth Migration on Cuspate Delta: An Example from Thanh Hoa, Vietnam

Duy,

Ty,

Than

et al. 2023

Preprint

View full text Add to dashboard Cite

Coastal erosion is threatening the infrastructures of coastal community at the Ma River mouth in Thanh Hoa province, Vietnam. When coastal erosion happens, people try to prevent it by emergency solutions like hard structures. However, this approach usually leads to more severe problem since the mechanism for coastal erosion is not investigated and understood properly. In this study the long-term configuration of Ma River mouth in Thanh Hoa Province, Central Vietnam has been investigated using Landsat imagery from 1987 to 2023. An analytical solution of one-line model for shoreline change was also employed to calculate the sand discharge from Ma River as well as the diffusion coefficient for sand transported along-shore by breaking waves. There was an asymmetric configuration of the Ma River mouth during the last 37 years. The sand supply from the Ma River is around 350,000 m3/year. This amount of sand is going mainly to the northern beach of the Ma River delta (from 55% to 75%). The asymmetric morphology of the Ma River mouth delta is the trigger for severe coastal erosion reported recently. This study provides a quick and easy method to investigate the morphological change of cuspate deltas where measured data is limited.

show abstract

Section: Application Of Analytical Solutions For Shoreline Changementioning

confidence: 99%

Coastal Erosion Caused by River Mouth Migration on Cuspate Delta: An Example from Thanh Hoa, Vietnam

Duy,

Ty,

Than

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Modeling results also showed that the sediment volume and spatial distribution changed through the simulated period according to monsoonal variation. Thanh et al (2021) focused on modeling the entire system with a process-based approach with Delft3D and Delft3D Flexible Mesh (DFM). The first model was used to detect the sediment dynamics in coastal areas, and the second model was used to allow easy coupling between 1D and 2D grids for analyzing complex river networks.…”

Section: Introductionmentioning

confidence: 99%

Experimental modeling of bed morphological changes and toe erosion of emerged breakwaters due to wave-structure interactions in a deltaic coast

Nguyen

Van

et al. 2022

Marine Geology

View full text Add to dashboard Cite

“…Generally few studies have been conducted on Jute mallow using protein as markers. However, this technique has been used effectively to study genetic diversity among and between genotypes in different plant species (Thanh and Hirata, 2002;Nethra et al, 2007;Chandra, 2008;Meena and Shukla, 2013). More reliable and useful information in detailing the diversity among Jute mallow genotypes can be generated by using protein markers.…”

Section: Genetic Diversity Based On Biochemical Markers I Proteinmentioning

confidence: 99%

Genetic characterization of jute mallow (corchorus spp.): a traditional African vegetable

Ngomuo¹

View full text Add to dashboard Cite

Jute mallow (Corchorus spp.) is a very nutritious traditional leafy vegetable. Its leaves contain an average of 15% dry matter,4.8 g of protein, 259 mg of calcium, 4.5 mg of iron, 4.7 mg of vitamin A, 92 μg of folate, 1.5 mg of nicotinamide and 105 mg of ascorbic acid per 100g of leaves. In spite of its nutritional importance, cultivation of Jute mallow is limited due to lack of scientific information with regard to available cultivars and their adaptation to specific environments. The aim of this study was to analyze the genetic diversity and evaluate the accessions which are well adapted to specific environment for leaf and seeds production. Ninety accessions were evaluated in the field trial experiments for two growing seasons. ISSR and SSR markers were employed for molecular characterization as well as leaf and seed yield evaluation. The results showed significant (p<0.01) variability in accessions in all morphological traits. Traits such as plant height (r=0.448), petiole length (r=0.237), primary branches (r=0.319) and number of leaves per plant (r=0.333) were significantly (p<0.01) correlated with biomass yield. First five Principal components (PCs) with Eigen values ≥1 explained 72.9% of the total variability in the accessions. Cluster analysis grouped the accessions into five major clusters mainly based on their origin. Number of alleles per locus ranged from 2-4 with an average of 2.63 alleles per locus. Polymorphic information content (PIC) ranged from 0.278 in primer SSR17 to 0.78 in primer SSR24. Average Nei‘s gene diversity (h) and Shannon‘s information index (I) were 0.348 and 0.557, respectively. In ISSR markers a total of 85 bands were amplified and average polymorphic bands per primer was 2.75. PIC values ranged from 0.39 to 0.76 with average of 0.53. The highest Nei‘s pair wise genetic distance (0.431) was observed in East African accessions. UPGMA cluster analysis grouped the accessions into five main clusters at genetic similarity coefficient of 0.53. In terms of leaf and seed yield, significant (p<0.01) differences among the accessions in all traits was observed. Leaf fresh weight ranged from 18.3g/plant to 121.3g/plant in accessions TOT 6747 and TOT 8532, respectively. Seed yield ranged from 1.0g/plant to 35.5g/plant in accessions TOT 7980 including eight others and TOT 7866, respectively. Evaluation of genetic diversity and the agronomic traits for leaf and seed yield in this germplasm has revealed useful information for breeders in their efforts to improve the yield as well as selection of accessions with good agronomic traits. It is recommended that detailed study to document ethnomenclacture, ethnobotanical uses, progress towards domestication and challenges faced by farmers be conducted.

show abstract

Modeling of Hydrodynamics and Sediment Transport in the Mekong Delta

Abstract: This research was conducted under the auspices of the Graduate School for Socio-Economic and Natural Sciences of the Environment (SENSE)CRC Press/Balkema is an imprint of the Taylor & Francis Group, an informa business

Cited by 3 publications

References 148 publications

Coastal Erosion Caused by River Mouth Migration on Cuspate Delta: An Example from Thanh Hoa, Vietnam

Coastal Erosion Caused by River Mouth Migration on Cuspate Delta: An Example from Thanh Hoa, Vietnam

Experimental modeling of bed morphological changes and toe erosion of emerged breakwaters due to wave-structure interactions in a deltaic coast

Genetic characterization of jute mallow (corchorus spp.): a traditional African vegetable

Contact Info

Product

Resources

About