scholarly journals APLIKASI GEOSPASIAL ANALISIS UNTUK PENENTUAN ZONA IMBUHAN AIRTANAH DI CAT WONOSOBO, PROVINSI JAWA TENGAH

2017 ◽  
Vol 19 (3) ◽  
pp. 175 ◽  
Author(s):  
Thomas Triadi Putranto ◽  
Wahju Krishna Hidajat ◽  
Annita Kusuma Wardhani
Keyword(s):  
Hydraulic Conductivity ◽  
Groundwater Recharge ◽  
Groundwater Management ◽  
Groundwater Level ◽  
Soil Type ◽  
Soil Cover ◽  
Groundwater Discharge ◽  
Geospatial Analysis ◽  
Discharge Zone ◽  
Groundwater Basin

Groundwater is the valuable resources for supplying daily necessity of human’s life that is going to increase in line with the increasing number of population. Therefore, groundwater needs to be well managed. Groundwater management can be done thoroughly within a groundwater basin for defining groundwater recharge zone. The groundwater recharge zone was conducted by applying geospatial analysis using weighted and scoring approach. This method was accomplished by overlaying the score of some parameters (hydraulic conductivity, precipitation, soil cover, slope, and groundwater depth of water table) using ArcGIS 10.3 software. The parameters were permeability of rocks, rainfall, soil type, slope and depth of superficial groundwater level. The result of geospatial analysis can be divided into two zones which are groundwater recharge zone and groundwater discharge zone. 

scholarly journals Aquifer System, Recharge-Discharge Zone and Groundwater Basin Boundary Mapping to Support Open and Transparent Water Data, Case Study: Karangkobar Groundwater Basin

2019 ◽  
Vol 125 ◽  
pp. 01012
Author(s):  
Thomas Triadi Putranto ◽  
Muhammad Iman Luthfi ◽  
Nurakhmi Qadaryati ◽  
Narulita Santi ◽  
Wahju Krisna Hidajat
Keyword(s):  
Groundwater Management ◽  
Discharge Zone ◽  
Aquifer System ◽  
The Public ◽  
Data Application ◽  
Comprehensive Information ◽  
Groundwater Basin ◽  
The Government ◽  
Transparent Water

Sustainable groundwater management based on groundwater basin (GWB) must be equipped with comprehensive information including the characteristic of hydrogeology. This management method is very useful for governments to design some regulations, such as tax and conservation zone. Nowadays, not only the government but the public society can also have access to know this management. Open and transparent groundwater application needs sufficient data. Based on that issue, this research aims to provide the geological and hydrogeological conditions of GWB, define the aquifer configurations, and determine the groundwater recharge-discharge zones and the type of GWB boundary on Karangkobar GWB. The methods applied to the study are 1) mapping the geological and hydrogeological condition; 2) reconstruction of subsurface stratigraphic condition; and 3) overlay four parameters of the recharge-discharge zone. The Karangkobar GWB consists of the unconfined and confined aquifer of High Plain Aquifer, where the groundwater flows from north and east heading southward and westward. Seven boundary types bounded the Karangkobar GWB. The map can also support the open and transparent water data application system, it will also ease the party that will conduct an assessment to design regulation regarding the groundwater management.

scholarly journals Aplikasi Analisis Spasial Untuk Penentuan Zona Imbuhan Dan Zona Lepasan Airtanah, Cekungan Air Tanah (CAT) Karangkobar, Provinsi Jawa Tengah

2018 ◽  
Vol 16 (2) ◽  
pp. 162 ◽  
Author(s):  
Agus Harjanto ◽  
Thomas Triadi Putranto ◽  
Truman Simaremare
Keyword(s):  
Groundwater Level ◽  
Data Retrieval ◽  
Discharge Zone ◽  
Geological Condition ◽  
Scoring Method ◽  
Aquifer System ◽  
The North ◽  
Flow Through ◽  
Groundwater Basin ◽  
Basin Area

ABSTRAKCekungan Air Tanah (CAT) Karangkobar terletak di wilayah administrasi Kabupaten Banjarnegara dan Kabupaten Wonosobo.  CAT Karangkobar memiliki luas sekitar 299,6 km2. Daerah ini terletak di daerah dengan kondisi geologi yang banyak dipengaruhi oleh aktivitas vulkanisme. Secara regional sistem akuifer pada daerah ini merupakan sistem akuifer dengan aliran air tanah melalui ruang antar butir dan rekahan. Tujuan dari penelitian ini adalah untuk mendeliniasi daerah imbuhan dan daerah lepasan air tanah di CAT Karangkobar. Pengambilan data lapangan dilakukan dengan mengamati kondisi geologi dan mengukur tinggi muka air tanah CAT Karangkobar. Penentuan zona imbuhan dan lepasan dilakukan dengan metode geospasial menggunakan perangkat lunak Surfer dan ArcGis. Metode ini dilakukan dengan pembobotan. Parameter yang digunakan dalam pembobotan ini terdiri dari 5 parameter, yaitu: kelulusan batuan, curah hujan, jenis tanah penutup, kemiringan lereng dan kedalaman muka air tanah tidak tertekan. Nilai maksimal yang didapat dari pembobotan ini adalah 65 sedangkan nilai minimal adalah 39. Daerah imbuhan berada pada nilai bobot 53-65, daerah ini berada dibagian utara CAT Karangkobar. Daerah lepasan berada pada nilai bobot 39-52, daerah ini berada pada bagian selatan CAT Karangkobar..ABSTRACTKarangkobar groundwater basin located in Banjarnegara District and Wonosobo District. Karangkobar groundwater basin area is about 299,6 km2. This area is located in a region with geological condition which is heavily affected by volcanism activity. Regionally, aquifer system in this region is aquifer system with groundwater flow through pore spaces and fractures. The purpose of this research is to deliniate recharge and discharge zone of groundwater in Karangkobar groundwater basin. Field data retrieval was done by observing geological condition and measuring groundwater level, in Karangkobar groundwater basin. Recharge and discharge zone determination is done by geospatial method using Surfer and ArcGis software. This method is done with scoring method. Parameters used in this scoring consists of 5 parameters: permeability of rock, rainfall, soil type, slope and depth of superficial groundwater level. Maximum value in this scoring is 65 and minimum value is 39. Recharge zone score is on 53-65, which is located in the north of Karangkobar groundwater basin with. Discharge zone score is on 39-52, which is located in the south of Karangkobar groundwater basin.Keywords: groundwater, Karangkobar groundwater basin, geospatial method, recharge and discharge zone.Sitasi: Harjanto, A., Putranto, T.T., dan Simaremare, T.(2018 Aplikasi Analisis Spasial Untuk Penentuan Zona Imbuhan Dan Zona Lepasan Airtanah, Cekungan Air Tanah  (CAT) Karangkobar, Provinsi Jawa Tengah. Jurnal Ilmu Lingkungan, 16(2), 162-172, doi:10.14710/jil.17.2.162-172

scholarly journals Data-Driven Approach to Assess Spatial-Temporal Interactions of Groundwater and Precipitation in Choushui River Groundwater Basin, Taiwan

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3097
Author(s):  
Lamtupa Nainggolan ◽  
Chuen-Fa Ni ◽  
Yahya Darmawan ◽  
I-Hsien Lee ◽  
Chi-Ping Lin ◽  
...  
Keyword(s):  
Groundwater Recharge ◽  
Root Mean Square ◽  
Groundwater Level ◽  
Data Driven ◽  
Mean Square ◽  
Groundwater Levels ◽  
Correlation Analyses ◽  
Data Driven Approach ◽  
Groundwater Basin ◽  
Temporal Interactions

The scarcity of groundwater and precipitation stations has limited accurate assessments of basin-scale groundwater systems. This study proposes a workflow that integrates satellite and on-site observations to improve the spatial and temporal resolution of the groundwater level and enable recharge estimations for the Choushui River groundwater basin (CRGB) in Western Taiwan. The workflow involves multiple data processing steps, including analysis of correlation, evaluation of residuals, and geostatistical interpolation based on kriging methods. The observed groundwater levels and recharge are then the basis to assess spatial-temporal interactions between groundwater and recharge in the CRGB from 2006 to 2015. Results of correlation analyses show the high correlation between the groundwater level and the land surface elevation in the study area. However, the multicollinearity problem exists for the additional precipitation data added in the correlation analyses. The correlation coefficient, root mean square error, and normalized root mean square parameters indicate that the Regression Kriging (RK) performs better the groundwater variations than the Ordinary Kriging (OK) dose. The data-driven approach estimates an annual groundwater recharge of approximately 1.40 billion tons, representing 37% of the yearly precipitation. The correlation between groundwater levels and groundwater recharge exhibits low or negative correlation zones in the groundwater basin. These zones might have resulted from multipurpose pumping activities and the river and drainage networks in the area. The event-based precipitation and groundwater level have shown strong recharge behavior in the low-land area of the basin. Artificial weir operations at the high-land mountain pass might considerably influence the groundwater and surface water interactions.

scholarly journals Groundwater Resources Estimation in the Middle of Randublatung Groundwater Basin Based on Geoelectrical Investigation

2021 ◽  
Vol 930 (1) ◽  
pp. 012055
Author(s):  
D L Setyaningsih ◽  
K Setyawan ◽  
D P E Putra ◽  
Salahuddin
Keyword(s):  
Hydraulic Conductivity ◽  
Groundwater Flow ◽  
Groundwater Level ◽  
Groundwater Resources ◽  
Research Area ◽  
Silty Clay ◽  
Groundwater Abstraction ◽  
Aquifer Systems ◽  
Groundwater Basin ◽  
Basin Area

Abstract The high groundwater use in the Randublatung Groundwater Basin area relates to groundwater abstraction for agriculture. Therefore, a question arises on how much groundwater resources in this area may support agricultural groundwater usage. This research has the objective to quantify the groundwater resources in this area. This research conducts a geoelectrical investigation to identify the aquifer’s lithology and observe the groundwater level. The research reveals that resistivity values of subsurface rock layers in the research area range from 0.13 to 124.86 Ωm. The aquifer layer consisted of two aquifer systems, with the hydraulic conductivity varies of the aquifer layer is 0.0001 cm/s until 0.01 cm/s. The aquifer layers estimated to be found at depths vary 5 – 90 m from the ground with thickness range from 10 to 70 m. Meanwhile, the aquiclude layers consisted of clay, silty clay, and sandy clay was estimated to be found at depths varies 0 – 50 m from the ground with thickness varies from 5 to 65 m. by combining those data with a hydraulic gradient of groundwater flow, the dynamic groundwater resources in the research area is estimated between 50 m3/day and 4,691 m3/day.

scholarly journals Geological and groundwater flow model of a submarine groundwater discharge site at Hanko (Finland), northern Baltic Sea

2021 ◽  
Author(s):  
Samrit Luoma ◽  
Juha Majaniemi ◽  
Arto Pullinen ◽  
Juha Mursu ◽  
Joonas J. Virtasalo
Keyword(s):  
Hydraulic Conductivity ◽  
Groundwater Flow ◽  
Baltic Sea ◽  
Submarine Groundwater Discharge ◽  
Flow Model ◽  
Groundwater Discharge ◽  
Coarse Grained ◽  
Local Geometry ◽  
Groundwater Flow Model ◽  
Submarine Groundwater

AbstractThree-dimensional geological and groundwater flow models of a submarine groundwater discharge (SGD) site at Hanko (Finland), in the northern Baltic Sea, have been developed to provide a geological framework and a tool for the estimation of SGD rates into the coastal sea. The dataset used consists of gravimetric, ground-penetrating radar and shallow seismic surveys, drill logs, groundwater level monitoring data, field observations, and a LiDAR digital elevation model. The geological model is constrained by the local geometry of late Pleistocene and Holocene deposits, including till, glacial coarse-grained and fine-grained sediments, post-glacial mud, and coarse-grained littoral and aeolian deposits. The coarse-grained aquifer sediments form a shallow shore platform that extends approximately 100–250 m offshore, where the unit slopes steeply seawards and becomes covered by glacial and post-glacial muds. Groundwater flow preferentially takes place in channel-fill outwash coarse-grained sediments and sand and gravel interbeds that provide conduits of higher hydraulic conductivity, and have led to the formation of pockmarks on the seafloor in areas of thin or absent mud cover. The groundwater flow model estimated the average SGD rate per square meter of the seafloor at 0.22 cm day−1 in autumn 2017. The average SGD rate increased to 0.28 cm day−1 as a response to an approximately 30% increase in recharge in spring 2020. Sensitivity analysis shows that recharge has a larger influence on SGD rate compared with aquifer hydraulic conductivity and the seafloor conductance. An increase in recharge in this region will cause more SGD into the Baltic Sea.

scholarly journals Mapping Groundwater Seepage in a Fen Using Thermal Imaging

Geosciences ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 29
Author(s):  
Ogochukwu Ozotta ◽  
Philip J. Gerla
Keyword(s):  
Hydraulic Conductivity ◽  
Thermal Imaging ◽  
Crucial Role ◽  
Groundwater Discharge ◽  
Late Summer ◽  
Groundwater Temperature ◽  
Groundwater Seepage ◽  
Heterogeneous Soil ◽  
Hydraulic Gradients ◽  
Warm Soil

The transport of dissolved minerals and groundwater flow plays a crucial role in the ecosystem of many wetlands. Nonetheless, installing equipment to monitor groundwater seepage is invasive, harms vegetation, and can impact biodiversity. By remotely mapping surface temperature in late summer, when there is the greatest difference between warm soil and cold groundwater, temperature patterns can expose areas with the greatest upward gradient and flow. The conventional method of using tensiometers to measure hydraulic gradient and estimate flux using Darcy’s law was applied and compared with thermal imaging to characterize groundwater seepage at two contrasting sites within a central North Dakota fen (groundwater discharge wetland). Both sites exhibited variable gradients between the shallow and deep tensiometers. The temperature trend determined from the thermal imaging showed a closer relationship to the measured hydraulic gradients at the herbaceous (Sedge) site than at the wooded (Willow) site. Saturated hydraulic conductivity K ranged from 6 × 10−5 to 2 × 10−4 m/s for the Willow site; and 6 × 10−6 to 1 × 10−4 m/s for Sedge site. The flux calculated for the Willow site ranged from 1.4 × 10−5 to 2.7 × 10−4 m/s and that of the Sedge site ranged from 2.2 × 10−6 to 6.3 × 10−5 m/s. The gradients are affected at shallow depth because of heterogeneous soil stratigraphy, which is likely the reason that seepage faces at the sites cannot be mapped solely by thermal imaging.

The ability of Distichlis spicata to grow sustainably within a saline discharge zone while improving the soil chemical and physical properties

Soil Research ◽  
2008 ◽  
Vol 46 (1) ◽  
pp. 37 ◽  
Author(s):  
M. R. Sargeant ◽  
C. Tang ◽  
P. W. G. Sale
Keyword(s):  
Electrical Conductivity ◽  
Hydraulic Conductivity ◽  
Physical Properties ◽  
Soil Nitrogen ◽  
Fold Increase ◽  
Dry Weight ◽  
Saturated Hydraulic Conductivity ◽  
Distichlis Spicata ◽  
Discharge Zone ◽  
Spatial And Temporal Variation

Landholder observations indicate that the growth of Distichlis spicata in saline discharge sites improves the soil condition. An extensive soil sampling survey was conducted at the Wickepin field site in Western Australia, where D. spicata had been growing for 8 years, to test the hypothesis that this halophytic grass will make improvements in chemical and physical properties of the soil. Soil measurements included saturated hydraulic conductivity, water-stable aggregates, root length and dry weight, electrical conductivity, pH, and soil nitrogen and carbon. Results confirm that marked differences in soil properties occurred under D. spicata. For example, a 12-fold increase in saturated hydraulic conductivity occurred where D. spicata had been growing for 8 years, compared to adjacent control soil where no grass had been growing. There were also improvements in aggregate stability, with the most notable improvements in the top 0.10 m of soil, again with the greatest improvements occurring where 8 years of growth had occurred. Soil nitrogen and carbon increased under the sward, with the biggest increases occurring in the top 0.10 m of soil. Electrical conductivity measurements were more variable, mostly due to the large spatial and temporal variation encountered. However, the findings generally support the proposition that the growth of D. spicata does not lead to an accumulation of salt within the rooting zone.

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