Impact of Land Reclamation on Hydrogeochemical Processes in Coastal Aquifer Systems PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Impact of Land Reclamation on Hydrogeochemical Processes in Coastal Aquifer Systems PDF full book. Access full book title Impact of Land Reclamation on Hydrogeochemical Processes in Coastal Aquifer Systems by 陳扣平. Download full books in PDF and EPUB format.
Author: 陳扣平 Publisher: Open Dissertation Press ISBN: 9781374680531 Category : Languages : en Pages :
Book Description
This dissertation, "Impact of Land Reclamation on Hydrogeochemical Processes in Coastal Aquifer Systems: a Case Study in Shenzhen, China" by 陳扣平, Kouping, Chen, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled IMPACT OF LAND RECLAMATION ON HYDROGEOCHEMICAL PROCESSES IN COASTAL AQUIFER SYSTEMS: A CASE STUDY IN SHENZHEN, CHINA Submitted by CHEN KOUPING for the degree of Doctor of Philosophy at The University of Hong Kong in January 2008 Land reclamation played a significant role during urban development. This study investigated the impact of land reclamation in coastal areas in Shenzhen, China on hydrochemical processes in coastal aquifer system through field sampling and testing, laboratory analysis, and hydrogeochemical modeling. Groundwater samples were collected from the original coastal aquifers and reclaimed areas and analyzed for chemical composition. Marine mud samples were collected from sites reclaimed in different periods and heavy metal concentrations were determined. Archived data of groundwater major ions collected from various sources in the study area were also analyzed. Hydrogeochemical models were set up using PHREEQC to investigate and predict the hydrogeochemical evolution of groundwater after land reclamation. The results of samples analyses illustrated that groundwater in the reclaimed area had higher metal concentrations than in the original coastal land and marine mud buried by reclamation for a longer period had lower metal concentrations. Physico-chemical changes in groundwater such as reduction in pH and salinity induced by land reclamation were believed to enhance the mobility of metals accumulated in the marine mud. The marine mud buried in the land reclamation sites acted as an internal source of heavy metals in coastal aquatic systems because heavy metals in the marine mud were released to groundwater. Both analyses of the archived data and the modelling of the hydrogeochemical system demonstrated that coastal brackish aquifers experienced freshening as a result of pumping reduction and land reclamation. The freshening time of brackish aquifer behind a reclamation site was greater than that of the brackish aquifer without reclamation because the fill materials obstructed the groundwater flow to the sea. The evolution trends of the major ions in groundwater after land reclamation were mainly determined by the cation exchange capacity of the aquifer. DOI: 10.5353/th_b3955894 Subjects: Aquifers - China - Shenzhen (Guangdong Sheng: East) Reclamation of land - Shenzhen (Guangdong Sheng: East) Groundwater - Shenzhen (Guangdong Sheng: East) Water chemistry - Shenzhen (Guangdong Sheng: East)
Author: 陳扣平 Publisher: Open Dissertation Press ISBN: 9781374680531 Category : Languages : en Pages :
Book Description
This dissertation, "Impact of Land Reclamation on Hydrogeochemical Processes in Coastal Aquifer Systems: a Case Study in Shenzhen, China" by 陳扣平, Kouping, Chen, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled IMPACT OF LAND RECLAMATION ON HYDROGEOCHEMICAL PROCESSES IN COASTAL AQUIFER SYSTEMS: A CASE STUDY IN SHENZHEN, CHINA Submitted by CHEN KOUPING for the degree of Doctor of Philosophy at The University of Hong Kong in January 2008 Land reclamation played a significant role during urban development. This study investigated the impact of land reclamation in coastal areas in Shenzhen, China on hydrochemical processes in coastal aquifer system through field sampling and testing, laboratory analysis, and hydrogeochemical modeling. Groundwater samples were collected from the original coastal aquifers and reclaimed areas and analyzed for chemical composition. Marine mud samples were collected from sites reclaimed in different periods and heavy metal concentrations were determined. Archived data of groundwater major ions collected from various sources in the study area were also analyzed. Hydrogeochemical models were set up using PHREEQC to investigate and predict the hydrogeochemical evolution of groundwater after land reclamation. The results of samples analyses illustrated that groundwater in the reclaimed area had higher metal concentrations than in the original coastal land and marine mud buried by reclamation for a longer period had lower metal concentrations. Physico-chemical changes in groundwater such as reduction in pH and salinity induced by land reclamation were believed to enhance the mobility of metals accumulated in the marine mud. The marine mud buried in the land reclamation sites acted as an internal source of heavy metals in coastal aquatic systems because heavy metals in the marine mud were released to groundwater. Both analyses of the archived data and the modelling of the hydrogeochemical system demonstrated that coastal brackish aquifers experienced freshening as a result of pumping reduction and land reclamation. The freshening time of brackish aquifer behind a reclamation site was greater than that of the brackish aquifer without reclamation because the fill materials obstructed the groundwater flow to the sea. The evolution trends of the major ions in groundwater after land reclamation were mainly determined by the cation exchange capacity of the aquifer. DOI: 10.5353/th_b3955894 Subjects: Aquifers - China - Shenzhen (Guangdong Sheng: East) Reclamation of land - Shenzhen (Guangdong Sheng: East) Groundwater - Shenzhen (Guangdong Sheng: East) Water chemistry - Shenzhen (Guangdong Sheng: East)
Author: Jimmy Jiao Publisher: Cambridge University Press ISBN: 1107030595 Category : Business & Economics Languages : en Pages : 421
Book Description
Offers a comprehensive volume discussing groundwater problems in coastal areas, spanning fundamental science to practical water management.
Author: Jacob Bear Publisher: Springer Science & Business Media ISBN: 9401729697 Category : Science Languages : en Pages : 652
Book Description
Coastal aquifers serve as major sources for freshwater supply in many countries around the world, especially in arid and semi-arid zones. Many coastal areas are also heavily urbanized, a fact that makes the need for freshwater even more acute. Coastal aquifers are highly sensitive to disturbances. Inappropriate management of a coastal aquifer may lead to its destruction as a source for freshwater much earlier than other aquifers which are not connected to the sea. The reason is the threat of seawater intrusion. In many coastal aquifers, intrusion of seawater has become one of the major constraints imposed on groundwater utilization. As sea water intrusion progresses, existing pumping wells, especially those close to the coast, become saline and have to be abandoned. Also, the area above the intruding seawater wedge is lost as a source of natural replenishment to the aquifer. Despite the importance of this subject, so far there does not exist a book that integrates our present knowledge of seawater intrusion, its occurrences, physical mechanism, chemistry, exploration by geo physical and geochemical techniques, conceptual and mathematical modeling, analytical and numerical solution methods, engineering measures of combating seawater intrusion, management strategies, and experience learned from case studies. By presenting this fairly comprehensive volume on the state-of-the-art of knowledge and ex perience on saltwater intrusion, we hoped to transfer this body of knowledge to the geologists, hydrologists, hydraulic engineers, water resources planners, managers, and governmental policy makers, who are engaged in the sustainable development of coastal fresh ground water resources.
Author: Anning Suo Publisher: World Scientific ISBN: 9811246408 Category : Computers Languages : en Pages : 226
Book Description
Sea area reclamation is one important activity where land is obtained in coastal countries and regions. It is also a marine development activity with great environment impact. Management technologies for sea area reclamation is the technologies system for sea area reclamation management.This compendium is a summary of the research and application of reclamation management technology in China. It makes a thorough study and systematic exposition of the main technical links of reclamation management.This comprehensive reference text provides a window for domestic and abroad reclamation managers, reclamation demonstration and assessment workers, reclamation project owners and even teachers and students keen in reclamation management.
Author: Peter G. Cook Publisher: Springer Science & Business Media ISBN: 1461545579 Category : Science Languages : en Pages : 545
Book Description
Environmental Tracers in Subsurface Hydrology synthesizes the research of specialists into a comprehensive review of the application of environmental tracers to the study of soil water and groundwater flow. The book includes chapters which cover ionic tracers, noble gases, chlorofluorocarbons, tritium, chlorine-36, oxygen-18, deuterium, and isotopes of carbon, strontium, sulphur and nitrogen. Applications of the tracers include the estimation of vertical and horizontal groundwater velocities, groundwater recharge rates, inter-aquifer leakage and mixing processes, chemical processes and palaeohydrology. Practicing hydrologists, soil physicists and hydrology professors and students will find the book to be a valuable support in their work.
Author: Abdelazim M. Negm Publisher: Springer Nature ISBN: 3031126769 Category : Science Languages : en Pages : 353
Book Description
Groundwater is the world’s largest source of fresh water, but its safe and sustainable exploitation remains a challenge. Egypt's Nile Valley aquifer is the most important renewable aquifer, accounting for approximately 85% of total groundwater use in Egypt. Egypt's long-term development and socioeconomic growth in the Nile Valley depends on this groundwater. Concerns about groundwater assessment, quality, management, and sustainability frame the current status of Nile Valley groundwater supplies. Proper knowledge of the current state of the groundwater quantity and quality in the Nile Valley is vital for the development and management of groundwater resources in Egypt. Due to Egypt's water scarcity, the projected decline in Nile River flow due to climate change, and the development of numerous Nile River basin projects, the situation is critical, and the consequences might be severe. Furthermore, Egypt's growing population puts significant strain on groundwater, which is the second most significant freshwater supply next to the surface water supply coming from the Nile River as Egypt’s share. Several books on the various aspects of Egypt's water resources have been published, but there is insufficient recent information on groundwater in the Nile Valley aquifer, which is essential for Egyptian populations for domestic and irrigation purposes. As a result, this book on the groundwater in the Nile Valley aquifer emerges to complete the picture of Egypt’s water resources as a good example of arid country located in MENA regions with many arid countries. Consequently, the lessons learned from this book could be beneficial to other countries in MENA regions, particularly those in North Africa.
Author: 陳扣平
Author: 陳扣平
Author: Kouping Chen
Author: Jimmy Jiao
Author: Subhas Nandy
Author: Jacob Bear
Author: Anning Suo
Author: 
Author: Peter G. Cook
Author: Michael A. Smith
Author: Abdelazim M. Negm