Seawater Intrusion Modeling on Groundwater Confined Aquifer in Semarang

Suhartono, Edy; Purwanto, Purwanto; Suripin, S.

doi:10.1016/j.proenv.2015.01.017

Cited by 23 publications

(14 citation statements)

References 3 publications

(3 reference statements)

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“…The simulation model showed that the rate of seawater intrusion is about 0.20 km (with mangrove as a system component), and is about 0.30 -0.40 km (without mangrove as a system component). The trend of seawater intrusion in Jakarta is not different from seawater intrusion in Semarang which has increased by 0.575 km 2 years -1 (Suhartono, Purwanto & Suripin, 2015). Table 3 also shows that mangrove has an important role to play to reduce the rate of intrusion in Jakarta.…”

Section: Prediction Of Seawater Intrusion In Jakartamentioning

confidence: 84%

Correlation Analysis Between Seawater Intrusion and Mangrove Greenbelt

et al. 2017

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CORRELATION ANALYSIS BETWEEN SEAWATER INTRUSION AND MANGROVEGREENBELT. Seawater intrusion is an entry process of seawater to land. Many factors have caused seawater intrusion from freshwater exploitation until mangrove degradation. Mangrove ecosystem is a type of forest ecosystem which has an ability to reduce seawater intrusion. This paper analyzes the estimation and prediction of seawater intrusion and correlation between widths of mangrove with seawater intrusion. The relation analysis between the width of mangrove greenbelt with seawater intrusion used an equation model to predict seawater intrusion. The research method used sampling technique, system analysis with powersim software, correlation analysis and mathematical method with trend line analysis. Results show that (1) the mangrove density in the coastal area is approximately 50 -109 trees/ha. (2) Simulation results showed seawater intrusion rate was about 0.20 km year -1 (with mangrove as a component system), but reached 0.3 -0.4 km/year (without mangrove as a component system). (3) The simulation result also showed that freshwater salinity was estimated to increase from 1.92 ppt to 4.86 ppt. (4) The relation model between seawater intrusion and mangrove greenbelt showed that correlation coefficient was 0.97 with the equation seawater intrusion (m) = 2264.9 * exp (-0.009 * the width of mangrove greenbelt (m)), the correlation of mangrove width with seawater intrusion was 0.97. (5) Avicennia marina, Avicennia alba, Rhizophora styllosa, Sonneratia alba and Sonneratia caseolaris were the mangrove species that had the best ability to reduce seawater intrusion.Keywords: Seawater intrusion, mangrove, water salinity, system analysis ANALISIS KORELASI ANTARA INTRUSI AIR LAUT DENGAN JALUR HIJAU MANGROVE. Intrusi air laut merupakan proses masuknya air laut ke daratan. Faktor-faktor yang menyebabkan terjadinya intrusi air laut diantaranya adalah pemompaan air tawar hingga kerusakan ekosistem mangrove. Ekosistem mangrove adalah suatu ekosistem yang memiliki kemampuan untuk mengurangi proses intrusi air laut. Penelitian ini menganalisis pendugaan dan prediksi intrusi air laut, hubungan antara lebar jalur hijau mangrove dengan intrusi air laut. Analisis hubungan antara lebar jalur hijau dan intrusi air laut menggunakan suatu model persamaan. Penelitian ini dibangun dengan menggunakan

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Section: Prediction Of Seawater Intrusion In Jakartamentioning

confidence: 84%

Correlation Analysis Between Seawater Intrusion and Mangrove Greenbelt

et al. 2017

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“…This increasing salinization is monitored from several shallow dug wells and deep wells scattered around the city. Recently, a salinization phenomenon is estimated to reach 4 km inland from the coastline (Suhartono et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Stable Isotopes and Hydrochemistry Approach for Determining the Salinization Pattern of Shallow Groundwater in Alluvium Deposit Semarang, Central Java

Satrio

Prasetio

Hadian

et al. 2016

Indonesian J. Geosci.

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A groundwater study has been conducted in the Semarang City in August 2014, aiming to determine the source of shallow groundwater salinization using stable isotopes (18 O, 2 H) and water chemistry approach, and supported by local hydrogeological data. A number of shallow groundwater samples were taken at several locations with a depth of 0-35 m. Based on geological data, shallow groundwater of Semarang alluvium is dominated by insertion of sand-gravel and sandy-clay with average porosity of around 56.0 %. This layer is thinning towards the south and then increasingly thickening to the north and northeast of the studied area. The results of the analyses show that the characteristics of shallow groundwater, i.e. approximately 51% of groundwater, still have the original composition as meteoric water and the remaining approximately 49% obtained a shift in the isotopic composition as caused by interaction with seawater and the little influence of evaporation. The results of chemical analysis of water indicates that in dry seasons, shallow groundwater aquifers in the Semarang City is dominated by chloride (Cl-) with NaCl of water type. While the parameters of bicarbonate, chloride, and Na/Cl ratio, shallow groundwater can be classified into two groups, namely unintruded groundwater around 51% spread from the foot hills to the south towards the hills with elevations of 9-142 m above sea level and intruded groundwater around 49% spread from the coastline to the urban direction.

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“…Perubahan unsur yang dominan dari intrusi air laut dapat dilihat dari komposisi kimia air tanah diantaranya dari ion klorida (Cl) (Singhal dan Gupta, 2010; Purnama 2010; Cahyadi et al, 2017). Unsur kimia dari air ta-nah yang dominan terdampak intrusi ditunjukkan dari kandungan nilai sodium (Na) dan klorida (Cl) yang relatif tinggi (Suhartono et al, 2015, Cahyadi et al, 2017Hounsinou, 2020).…”

Section: Pendahuluanunclassified

Kajian Kualitas Air Tanah Dampak Intrusi Di Sebagian Pesisir Kabupaten Tuban

Febriarta¹

2020

Jurnal Geografi

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Wilayah Kabupaten Tuban bagian utara berbatasan langsung dengan Laut Jawa dengan pembangunan terpusat pada daerah pesisir. Salah satu isu permasalahan yang timbul dari pertumbuhan kota pesisir adalah penurunan kualitas air tanah akibat intrusi air laut. Penelitian ini bertujuan mengetahui kualitas air tanah yang terdapak intrusi air laut. Metode yang digunakan untuk mengetahui kondisi kualitas air tanah dengan analisis perbandingan dengan nilai baku mutu PermenKes RI No.32 Tahun 2017. Unsur yang dianalisis e.coli, e.coli total, nitrit (N02), nitrat (N03), bau, total zat padat terlarut (TDS), rasa, daya hantar listrik (DHL), besi (Fe), khlorida (Cl), sulfat (S04), kesadahan (CaC03), keasaman (pH), natrium (Na), kalium (K), bikarbonat (HC03), karbonat (C03), kalsium (Ca). Unsur yang melebihi baku mutu antara lain ecoli yang bersumber dari limbah rumah tangga (domestik), nitrat (N03) yang bersumber dari pupuk pertanian, daya hantar litrik (DHL) bersumber dari ion garam terlarut dan kesadahan (CaC03) yang bersumber dari batuan kapur. Sedangkan metode untuk mengetahui dampak intrusi air laut adalah dengan perbandingan ion mayor yaitu Mg2+ dan Ca 2+, dan Cl- dan HC03-. Hasil penelitian menunjukkan 11 dari 12 sampel atau 91% terpengaruh intrusi air laut.

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Seawater Intrusion Modeling on Groundwater Confined Aquifer in Semarang

Cited by 23 publications

References 3 publications

Correlation Analysis Between Seawater Intrusion and Mangrove Greenbelt

Correlation Analysis Between Seawater Intrusion and Mangrove Greenbelt

Stable Isotopes and Hydrochemistry Approach for Determining the Salinization Pattern of Shallow Groundwater in Alluvium Deposit Semarang, Central Java

Kajian Kualitas Air Tanah Dampak Intrusi Di Sebagian Pesisir Kabupaten Tuban

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