scholarly journals Seawater Intrusion Proneness and Geophysical Investigations in the Metaponto Coastal Plain (Basilicata, Italy)

Water ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 53
Author(s):  
Rosalba Muzzillo ◽  
Livia Emanuela Zuffianò ◽  
Enzo Rizzo ◽  
Filomena Canora ◽  
Luigi Capozzoli ◽  
...  
Keyword(s):  
Seawater Intrusion ◽  
Coastal Plain ◽  
Land Reclamation ◽  
Soil Salinization ◽  
Detailed Knowledge ◽  
Natural Systems ◽  
Groundwater Availability ◽  
Hydrochemical Data ◽  
Groundwater Samples ◽  
Geophysical Investigations

The Metaponto coastal plain extends about 40 km along the Ionian coast, between the Sinni and Bradano Rivers (southern Italy). During the 20th century, the increases in modern irrigation systems, land reclamation works, the overexploitation of wells, and agricultural and industrial activities have deeply modified land use and groundwater availability and quality along the plain. These modifications negatively impacted the natural systems in terms of groundwater and soil salinization, magnifying the risks due to seawater intrusion. In this study, we explored the proneness to seawater intrusion, testing a multidisciplinary approach based on hydrochemical and geophysical investigations. A significant portion of the coastal plain was selected for this purpose. A set of 49 groundwater samples was analyzed to define the chemical characteristics of the water and geoelectrical measurements were recorded along three long profiles. The geoelectrical surveys showed in detail the aquifer bottom pattern where it is deeply incised by paleovalleys, defining the main hydrostratigraphic features, as it is necessary to prevent seawater intrusion worsening. The hydrochemical data highlighted areas with higher seawater intrusion proneness. The acquired measurements show the high proneness to seawater intrusion, especially where the aquifer bottom is very deep below the sea level, also far from the coast, and the relevance of the detailed knowledge of the aquifer bottom in supporting any kind of management.

scholarly journals SEAWATER INTRUSION AND NITRATE POLLUTION IN COASTAL AQUIFER OF MARATHON BASIN

2017 ◽  
Vol 50 (2) ◽  
pp. 927 ◽  
Author(s):  
P. Papazotos ◽  
I. Koumantakis ◽  
E. Vasileiou
Keyword(s):  
Spatial Distribution ◽  
Seawater Intrusion ◽  
Coastal Plain ◽  
Coastal Aquifer ◽  
Nitrate Pollution ◽  
Average Concentration ◽  
Agricultural Activities ◽  
Chemical Analyses ◽  
Groundwater Salinization ◽  
Groundwater Samples

The overexploitation of groundwater and groundwater salinization cause quantitative and qualitative degradation of the water resources. The objectives of this research are to identify and investigate the extent of seawater intrusion and nitrate pollution into the coastal plain of Marathon in Eastern Attica, Greece. In the frame of this, 25 groundwater samples were collected in October 2014 from the study area and analyzed regarding the main parameters that indicated salinization of the aquifers. Specifically, water chemical analyses were carried out and statistical analyses regarding spatial distribution were performed. The results demonstrated increased values of the parameters which can be associated with seawater intrusion. Considering and evaluating the results from the chemical analyses it is obvious that seawater intrusion takes place in the area. Furthermore, the average concentration of NO3- was 44.16mg L-1 and this can be attributed to overexploitation of coastal aquifer for agricultural activities.

scholarly journals Seawater Intrusion Assessment based on Hydrochemical Data in Gapura Sub-district of Sumenep Regency, East Java, Indonesia

2021 ◽  
Vol 926 (1) ◽  
pp. 012109
Author(s):  
R K Warist ◽  
W Wilopo ◽  
N I Setiawan
Keyword(s):  
Seawater Intrusion ◽  
Brackish Water ◽  
Total Dissolved Solids ◽  
Water Sources ◽  
Mixing Zone ◽  
Piper Diagram ◽  
Salt Pond ◽  
Hydrochemical Data ◽  
Groundwater Samples ◽  
Two Samples

Abstract Gapura is a sub-district with a large salt pond in Sumenep Regency, Madura Island, Indonesia. In this area, many residents’ houses have drilled wells to meet their water needs. One factor is that Municipal Waterwork (PDAM) does not reach the area due to limited water sources and difficult accessibility. Residents in the area claimed to have found some groundwater that tasted brackish. This study aims to apply hydrochemical analysis to identify the possibility of seawater intrusion in the area. The assessment of seawater intrusion uses the total dissolved solids (TDS) value and major ion of groundwater samples. In the analysis of thirty samples, two samples have different values from the samples of freshwater. However, the value of these two samples is relatively low to be classified as seawater intrusion. It is described on the TDS values that belong to the class of brackish water, from Simpson ratio values classified as slightly contaminated, and from the piper diagram plot that is still in the mixing zone in the middle of the diagram. The presence of brackish water in these samples can be caused by a location close to salt pond activities.

scholarly journals Appraisal of the Quality Parameters of the Groundwater used for Domestic and Irrigation Purposes in the Hard Rock Aquifer System of the Vasishta sub- basin of the Vellar River, Tamil Nadu

2021 ◽  
Vol 30 (4) ◽  
pp. 706-717
Author(s):  
R . Poongodi ◽  
S. Venkateswaran ◽  
R. Suresh ◽  
R. Vimala
Keyword(s):  
Tamil Nadu ◽  
Quality Parameters ◽  
World Health ◽  
Physical Parameters ◽  
Aquifer System ◽  
Groundwater Availability ◽  
Hydrochemical Data ◽  
Groundwater Samples ◽  
Health Organization

This article presents an appraisal of the quality of groundwater in the hard Received in revised form: 15.07.2021 rock aquifer system of the Vasishta sub basin, of the Vellar River Basin. Seventy nine representative groundwater samples were collected from dug and bore wells which are intensively used for domestic and irrigational purposes. The physical parameters viz. PH, EC and TDS were estimated in the field using a portable multiparameter meter. The groundwater samples were transported to the laboratory for measuring major ionic concentrations viz, Ca, Mg, Na, K, CO3, HCO3, Cl, SO4, F and NO3. The hydrochemical data were graphically projected and spatial temporal thematic maps generated with reference to the World Health Organization (WHO) and Bureau of Indian (BIS) Standards. The peoples living in the sub basin engage in agricultural activities where the groundwater availability is sufficient. The groundwater is a major source for meeting their basic needs, such as for domestic, irrigational and industrial purposes. Good correlation is exhibited between EC and TDS Cl, SO4.Cl exhibits good correlation with Mg and Ca (0.817), (0.751) indicating leaching of secondary salts. TDS and EC showed strong correlation with Cl, SO4. Clustering groundwater samples based on their similarity is known as Q-mode type clustering method. Spatial and temporal maps of the water quality index reveal that the majority of the groundwater samples fall under the categories excellent to good.

scholarly journals Landscape Design as a Tool to Reduce Soil Salinization: The Study Case of Keriya Oasis (NW China)

2019 ◽  
Vol 11 (9) ◽  
pp. 2578
Author(s):  
Jumeniyaz Seydehmet ◽  
Guang-Hui Lv ◽  
Abdugheni Abliz
Keyword(s):  
Traditional Knowledge ◽  
Land Reclamation ◽  
Sand Dunes ◽  
Soil Salinization ◽  
Landscape Design ◽  
Adaptive Landscape ◽  
Farmland Abandonment ◽  
Landscape Characteristics ◽  
Geological Conditions ◽  
Water Logging

Irrational use and management of water and land are associated with poor hydro-geological conditions causing water logging and salinization problems, possibly leading to farmland abandonment and economic loss. This poses a great challenge to the sustainability of oasis’ and requires desalinization through reasonable landscape design by multiple crossing studies so we collected traditional knowledge by field interviews and literature schemes, except for the modern desalinization approaches by literature, and we found that the salinization problem has been solved by traditional land reclamation, traditional drainage, natural drainage and flood irrigation, locally. It is worth mentioning that the traditional reclamation in salinized areas requires flood water, sand dunes and a salinized pit area; the sand dunes are used to elevate the pit surface, and water is used to leach salt from the soil. Natural drainage (the depth and width are 4–10 m and 50–100 m, respectively) caused by flash flooding has significant benefits to some salinized villages in the range of 3000–5000 m and ancient groundwater drainage systems, such as Karez are supporting the oasis with drainage water for centuries. In addition landscape characteristics, salinization and hydro-geological conditions of the oasis were studied from Landsat image, DEM, literature and field photos. Then based on the gathered information above, a desalinization model was developed to decrease the groundwater table and salt leaching in the water logging landscape. Then according to landscape characteristics, different desalinization approaches were recommended for different landscapes. To address environmental uncertainties, an adaptive landscape management and refinement approach was developed, and acceptance of the model was validated by stakeholder opinion. The results provide guidelines for sustainable desalinization design and highlight the importance of combining traditional knowledge and modern ecological principles in sustainable landscape design.

scholarly journals Salinization effects on coastal ecosystems: a terrestrial model ecosystem approach

2018 ◽  
Vol 374 (1764) ◽  
pp. 20180251 ◽  
Author(s):  
C. S. Pereira ◽  
I. Lopes ◽  
I. Abrantes ◽  
J. P. Sousa ◽  
S. Chelinho
Keyword(s):  
Seawater Intrusion ◽  
Crop Yields ◽  
Plant Biomass ◽  
Saline Water ◽  
Sampling Period ◽  
Ecosystem Approach ◽  
Soil Salinization ◽  
Negative Effects ◽  
Saline Irrigation ◽  
Delayed Effects

In coastal areas, intrusion/irrigation with seawater can threaten biodiversity along with crop yields, and the leaching of salts from areas affected by these processes can increase the salinity of water bodies nearby. The aims of this study were to evaluate the effects of salinization on coastal soil ecosystems due to saline intrusion/irrigation. Terrestrial model ecosystems were used to simulate two soil salinization scenarios: (i) seawater intrusion and irrigation with distilled water and (ii) seawater intrusion and irrigation with saline water. Three sampling periods were established: T0—after acclimation period; T1—salinization effects; and T2—populations' recovery. In each sampling period, the abundance of nematodes, enchytraeids, springtails, mites and earthworms, and plant biomass were measured. Immediate negative effects on enchytraeid abundance were detected, especially at the higher level of saltwater via intrusion+irrigation. Eight weeks after the cessation of saline irrigation, the abundance of enchytraeids fully recovered, and some delayed effects were observed in earthworm abundance and plant biomass, especially at the higher soil conductivity level. The observed low capacity of soil to retain salts suggests that, particularly at high soil conductivities, nearby freshwater bodies can also be endangered. Under saline conditions similar to the ones assayed, survival of some soil communities can be threatened, leading to the loss of biodiversity. This article is part of the theme issue ‘Salt in freshwaters: causes, ecological consequences and future prospects’.

scholarly journals STUDY OF THE PROGRESS OF SEAWATER INTRUSION WITHIN A PLAIN AREA OF RHODOPE PREFECTURE

2004 ◽  
Vol 36 (4) ◽  
pp. 2057 ◽  
Author(s):  
Φ. Πλιάκας ◽  
I. Διαμαντής ◽  
A. Καλλιώρας ◽  
Χ. Πεταλάς
Keyword(s):  
Electrical Conductivity ◽  
Grain Size ◽  
Seawater Intrusion ◽  
Groundwater Level ◽  
Specific Electrical Conductivity ◽  
Chemical Analyses ◽  
Conductivity Measurements ◽  
Groundwater Level Fluctuations ◽  
Plain Area ◽  
Groundwater Samples

This paper investigates the progress of seawater intrusion within the plain area of Xylagani - Imeros, in SW part of Rhodope Prefecture, as well as the suitability of groundwater for several purposes, after qualitative valuation of groundwater samples from selective wells of the study area. The conclusions also include some managerial suggestions for the confrontation of seawater intrusion. The investigation in question took place between 1994-1997 and 2002-2003, and involves the installation of piezometric wells, geoelectric sounding measurements, grain size analyses, monitoring of the groundwater level fluctuations in selective wells, specific electrical conductivity measurements and chemical analyses of water samples from selective wells of the study area.

scholarly journals Systematic Analysis of Geothermal Resources in the Coastal Bedrock Area of Chunxiao Town (China) by Using Geochemistry and Geophysics Methods

Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 214
Author(s):  
Wei Zhao ◽  
Yanzhu Lin ◽  
Pengpeng Zhou ◽  
Guangcai Wang
Keyword(s):  
Thermal Water ◽  
Shallow Groundwater ◽  
Water Yield ◽  
Reservoir Temperature ◽  
Geothermal Resources ◽  
Systematic Analysis ◽  
Effective Utilization ◽  
Scientific Exploration ◽  
Hydrochemical Data ◽  
Geophysical Investigations

Geochemical and geophysical investigations were carried out to obtain more evidence of the potential of geothermal resources in Chunxiao Town (China). Hydrochemical data indicate the possible existence of mixing process between deep geothermal water and shallow groundwater. Analysis with SiO2 geothermometer shows that the geothermal reservoir temperature was estimated around 40–60 °C. In addition, combination investigations with CSAMT, radioactive radon, and soil thermal-released mercury detection reveal the specific location of the conduction fractures for thermal water circulation. Furthermore, the drilling work shows the deep thermal water temperature of >55 °C and the thermal water yield of 300 m3/d. All these results could provide important guidance for the scientific exploration and effective utilization of geothermal resources in coastal area.

scholarly journals The Hydrogeochemical Characteristics of Groundwater Subjected to Seawater Intrusion in the Archipelago, Korea

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1542
Author(s):  
Kyungsun Shin ◽  
Dong-Chan Koh ◽  
Hyejung Jung ◽  
Jeonghoon Lee
Keyword(s):  
Seawater Intrusion ◽  
Principal Component ◽  
Molar Ratio ◽  
Mixing Ratio ◽  
Mixing Ratios ◽  
Ion Exchange Reaction ◽  
Groundwater Samples ◽  
Geochemical Reactions ◽  
Quality Type ◽  
Geochemical Reaction

The effect of seawater on the groundwater in archipelago of South Korea where it has rarely been investigated was analyzed by examining the hydrogeochemical characteristics. A total of 74 groundwater samples were classified by water quality type and Cl−/HCO3− molar ratio. First, 36 samples of the Ca–Cl type and 32 samples of the Na–Cl type (accounting for 91.9% of the total) were considered to have been influenced by seawater. When the samples had been classified based on the Cl−/HCO3− molar ratio, the samples with a Cl−/HCO3− molar ratio of 2.8 or higher (indicating that seawater had highly influenced the groundwater) accounted for 40 out of 74 samples. This confirms that the groundwater in the study area had been affected by seawater. When quantitatively determining the influence of seawater on the groundwater, the seawater mixing ratios using either Cl or Br ion were found to be almost the same. In the case of Cl ion, the mixing ratio was in the range of 0–10.4% (average of 1.0%), while when using Br ion, the mixing ratio was in the range of 0–7.6% (average of 0.6%). From a principal component analysis, it can be seen that the influence of seawater occupied the first component of 54.1% and it is evident that the samples with a large mixing ratio of seawater were from regions where seawater has a large influence. The ion-exchange reaction was proceeded by calculating the ionic delta value to indicate the seawater intrusion and cation exchange, and specific trends of the ions participating in the geochemical reaction related to the seawater mixing ratio are reported herein. It was found that the ionic delta value of each ion had a mixing ratio and specific tendency according to the change in mixing ratio before the constant value of the seawater mixing ratio saturated with Na2+. Our results show that it can be possible to grasp the contribution of the geochemical reactions of each ion to the seawater mixing ratio.

Sign in / Sign up

Export Citation Format

Share Document