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Advances in Coastal Hydrological and Geological Processes
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Advances in Coastal Hydrological and Geological Processes

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydrology".

Deadline for manuscript submissions: closed (28 February 2025) | Viewed by 4431

Special Issue Editors

Dr. Shixiong Yang

E-Mail Website
Guest Editor
Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266237, China
Interests: paleoceanography and paleoclimate; paleogeography; quaternary environment; climate change; environmental archaeology; phytogeography
Dr. Shaofeng Pei

E-Mail Website
Guest Editor
Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266237, China
Interests: phytoplankton ecology; wetland biogeochemistry; eutrophication; carbon cycle; marine primary productivity
Dr. Guohua Hou

E-Mail Website
Guest Editor
Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266237, China
Interests: coastal hydrogeology; hydrogeochemistry; marine sedimentology; climate change

Special Issue Information

Dear Colleagues,

Coastal zones are geomorphic units of interaction between the sea and the land characterized by complex interactive processes, abundant natural resources, fragile ecological environments, and frequent human activities. With the rapid increase in population and urbanization, coastal zones are facing enormous pressures such as climate warming, rising sea levels, regional ecological degradation, reduced biodiversity, increased pollution, harmful algal blooms, and degradation of fisheries resources, which seriously affect the sustainable development of natural resources and the human economy. Therefore, research on hydrological and geological processes in the coastal zone is of great academic significance for global environmental change and sustainable development.

This Special Issue aims to delve into the recent advancements in coastal hydrological and geological processes. We encourage contributors to share their original research papers addressing these related concerns.

Potential topics include but are not limited to the following:

  • Sedimentary, hydrodynamic, and biogeochemical processes in estuarine and coastal areas;
  • Assessment of human health risks linked to contaminated water, along with response strategies for both groundwater and surface water resources;
  • Biogeochemical cycling of nutrients and carbon, and potential effects on coastal ecology;
  • Impact of climate change on wetland evolution and its ecosystem and hydrological ecology;
  • Source-to-sink analysis.

Dr. Shixiong Yang
Dr. Shaofeng Pei
Dr. Guohua Hou
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydrological change, water, and sediment quality
  • geochemical composition
  • source-to-sink
  • risk assessment
  • toxicity
  • climate change
  • coastal ecology

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (4 papers)

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Research

24 pages, 9503 KiB  
Article
The Hotspots and Trends in the Literature on Soil Salinization in China: A Visualized Analysis Based on CiteSpace
by Zhisheng Zhang, Guohua Hou, Ximing Luo, Maosheng Gao, Zhenlin Liu, Mengyao Wang, Qiming Sun and Xinyue Chang
Water 2025, 17(5), 673; https://doi.org/10.3390/w17050673 - 26 Feb 2025
Cited by 1 | Viewed by 737
Abstract
To comprehensively explore the research hotpots and trends in soil salinization in China, CiteSpace software (version 6.3.R1) was used to visualize the knowledge graph and bibliometric analysis of relevant literature from 2000 to 2024 in the China Knowledge Network (CNKI) database and Web [...] Read more.
To comprehensively explore the research hotpots and trends in soil salinization in China, CiteSpace software (version 6.3.R1) was used to visualize the knowledge graph and bibliometric analysis of relevant literature from 2000 to 2024 in the China Knowledge Network (CNKI) database and Web of Science (WoS) database. Analysis of 1963 CNKI documents and 2134 WoS documents published by 249 units for annual publications, research institutions, authors, and keyword graph revealed that the annual publication volume of the literature in the field of salinization shows an upward trend and the volume of quality English publications is higher than that of Chinese. The cooperation network of authors and institutions had already been formed in the field. The cooperation among research institutes was stable, and a core group of authors had already been formed. Since 2020, “spectral index”, “machine learning”, “remote sensing inversion”, “spatial and temporal changes”, “inter-root”, “simulation”, “oasis”, “ rainy season”, and “soil water content” have become hot words in research. The visualization of spatial and temporal distribution of soil salts based on big data and artificial intelligence has become the focus of attention of the academic community. Therefore, the challenges of salinization should be better addressed through scientific and technological innovation and comprehensive measures. The results of the study are expected to provide scientific references for the field of salinization in China. Full article
(This article belongs to the Special Issue Advances in Coastal Hydrological and Geological Processes)
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18 pages, 15965 KiB  
Article
On Tectonic and Hydro Meteorological Conditions of Methane Genesis and Migration in the Offshore Waters of East Vietnam
by Andrey Kholmogorov, Ruslan Kulinich, Galina Vlasova, Nadezhda Syrbu, Nengyou Wu and Yizhao Wan
Water 2025, 17(2), 150; https://doi.org/10.3390/w17020150 - 8 Jan 2025
Viewed by 701
Abstract
Complex geological, gas geochemical and hydro meteorological studies were conducted to investigate the methane fields present in the bottom sediments and seawater of the Red River and Phu Khanh sedimentary basins. We demonstrate that the system of tectonic faults that formed the sedimentary [...] Read more.
Complex geological, gas geochemical and hydro meteorological studies were conducted to investigate the methane fields present in the bottom sediments and seawater of the Red River and Phu Khanh sedimentary basins. We demonstrate that the system of tectonic faults that formed the sedimentary basins of the Red River and the Phu Khanh (the eastern shelf and slope of Vietnam) created the necessary conditions for the generation and migration of endogenous methane into the bottom sediments and seawater. It is shown that dissolved methane in seawater can be transported by marine currents, which in turn can be influenced by seasonal and irregular synoptic processes. The research shows that part of the dissolved methane contained in the waters above the Ken Bau gas field can be transported to the south by the coastal Vietnamese current, which adapts to the conditions of the winter northeast monsoon. It is concluded that there could be at least two deep sources of hydrocarbon gas emissions in the Phu Khanh basin. The impact of Typhoon Nakri on the transport of dissolved methane in the water column of the Phu Khanh sedimentary basin has been investigated. The typhoon could create favorable hydrodynamic conditions for the movement of dissolved gases from oil and gas deposits near the coasts of the islands of Kalimantan and Palawan to the Phu Khanh basin. A possible route for this transfer has been identified. Full article
(This article belongs to the Special Issue Advances in Coastal Hydrological and Geological Processes)
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24 pages, 11567 KiB  
Article
Estimation of Freshwater Discharge from the Gulf of Alaska Drainage Basins
by Peng Xin, Muqing Shi, Humio Mitsudera and Takayuki Shiraiwa
Water 2024, 16(18), 2690; https://doi.org/10.3390/w16182690 - 21 Sep 2024
Viewed by 1297
Abstract
The freshwater discharge from catchments along the Gulf of Alaska, termed Alaska discharge, is characterized by significant quantity and variability. Owing to subarctic climate and mountainous topography, the Alaska discharge variations may deliver possible impacts beyond the local hydrology. While short-term and local [...] Read more.
The freshwater discharge from catchments along the Gulf of Alaska, termed Alaska discharge, is characterized by significant quantity and variability. Owing to subarctic climate and mountainous topography, the Alaska discharge variations may deliver possible impacts beyond the local hydrology. While short-term and local discharge estimation has been frequently realized, a longer time span and a discussion on cascading impacts remain unexplored in this area. In this study, the Alaska discharge during 1982–2022 is estimated using the Soil and Water Assessment Tool (SWAT). The adequate balance between the model complexity and the functional efficiency of SWAT suits the objective well, and discharge simulation is successfully conducted after customization in melting calculations and careful calibrations. During 1982−2022, the Alaska discharge is estimated to be 14,396 ± 819 m3⋅s−1⋅yr−1, with meltwater contributing approximately 53%. Regarding variation in the Alaska discharge, the interannual change is found to be negatively correlated with sea surface salinity anomalies in the Alaska Stream, while the decadal change positively correlates with the North Pacific Gyre Oscillation, with reasonable time lags in both cases. These new findings provide insights into the relationship between local hydrology and regional climate in this area. More importantly, we provide rare evidence that variation in freshwater discharge may affect properties beyond the local hydrology. Full article
(This article belongs to the Special Issue Advances in Coastal Hydrological and Geological Processes)
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21 pages, 12925 KiB  
Article
Spatial Distribution and Health Risk Assessment of Saline Water Intrusion and Potentially Hazardous Pollutants in a Coastal Groundwater Environment
by Zengbing Sun, Xiao Yang, Sen Liu, Jiangbo Wang and Mingbo Li
Water 2024, 16(18), 2573; https://doi.org/10.3390/w16182573 - 11 Sep 2024
Viewed by 877
Abstract
In coastal plains, saline water intrusion (SWI) and potentially hazardous pollutants are harmful to local human health. The southern Laizhou Bay has become a typical representative of the northern silty coast due to its extensive silt sedimentation and the significant impact of human [...] Read more.
In coastal plains, saline water intrusion (SWI) and potentially hazardous pollutants are harmful to local human health. The southern Laizhou Bay has become a typical representative of the northern silty coast due to its extensive silt sedimentation and the significant impact of human activities. This research focuses on a portion of the southern Laizhou Bay, using GIS-based spatial analysis, water quality index methods and health risk assessments to evaluate the impact of saltwater intrusion and potential hazardous pollutants. The results show that the groundwater in the study area is significantly impacted by saline water intrusion, leading to major ion concentrations that far exceed World Health Organization (WHO) standards. The groundwater chemical types of brine and brackish water in the study area are mainly Cl-Na, and the main chemical types of fresh water are HCO3-Ca·Na. The average concentration sequence of the main ions in groundwater is K+ > HCO3− > Cl− > Na+ > SO42− > Ca2+ > Mg2+. The average hazard quotient (HQ) sequence in typical pollutants is Cl− > F− > NO3-N > Se > Mn > NO2-N > Cu > Pb > Zn > Fe, and the carcinogenic risk (CR) sequence caused by carcinogenic heavy metals is Cd > As > Cr. The noncarcinogenic health risk area is mainly distributed in the northwest of the study area, while the potential carcinogenic risk area is in the central region. The Cl is the greatest noncarcinogenic risk to adults and children. The mean HQ values for adults and children were 95.69 and 146.98, indicating a significant noncarcinogenic risk. The mean CR values for adults and children were 0.00037 and 0.00057, suggesting a relatively low carcinogenic risk. SWI is the main influencing factor on human health; therefore, it is necessary to prevent and control SWI. Moreover, potentially hazardous pollutants are carcinogenic and noncarcinogenic risks and are caused by agriculture, industry and other human activities. The findings of this research offer scientific insights for groundwater pollution control and saline water intrusion management in similar coastal areas. Full article
(This article belongs to the Special Issue Advances in Coastal Hydrological and Geological Processes)
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