Articles

Identifikasi Kontaminasi Air Tanah Oleh Polutan Cl- di Kawasan Pertanian Garam, Kecamatan Pademawu, Pamekasan, Madura Menggunakan Metode Geolistrik Tahanan Jenis Gemilang, Wisnu Arya; Wisha, Ulung Jantama; Kusumah, Gunardi
Jurnal Teknologi Lingkungan Vol. 20 No. 1 (2019)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1023.317 KB) | DOI: 10.29122/jtl.v20i1.2944

Abstract

ABSTRACTPademawu Sub-District consist of salt ponds reached 740.96 Ha that is the second largest area in Pamekasan. Land-use overlapping problems between salt ponds and settlement influence the environmental degradation enhancement. The presence of salt ponds is indicated as the cause of increased salinity in well-water around the settlement so that the well-water is salty. To determine the influence of salt pond on groundwater pollution, the information regarding surface characteristics as well as the profile beneath the surface is essential. The method consisted of a hydro-geology survey, hydrochemistry, and geophysics (Geo-Electricity method). The type of groundwater is predominated by chloride (Na-Cl) and carbonate (Na-HCO3, Ca-HCO3). Based on groundwater chemistry element calculation, it is observed that there is an influence of salt pond infiltration on groundwater aquifer. The conductivity of groundwater ranged from 15,000–50,000 µS/cm (categorized into salty water). The specific resistance value of rocks beneath the surface varied between 0.1–300 that is usual in either coastal or alluvial area. The low value of specific resistance associated with alluvial lithology consisted of either brackish water or salt water expected the result of salt pond filtration. The depth of surface saltwater contaminating the aquifer layer ranged from 5 up to 30 meters. The presence of salt ponds influences the level of contamination of Cl- pollutant in shallow groundwater in Pademawu Sub-District, Madura, so it is necessary to re-arrange the land-use system in the coastal area.Keyword: groundwater pollution, salt pond, Pademawu Sub-District, Specific resistance Geo-ElectricityABSTRAK Kecamatan Pademawu terdiri atas kawasan tambak garam seluas 740,96 Ha yang merupakan wilayah terluas kedua di Pamekasan. Pemasalahan tumpang tindih jenis pemanfaatan lahan tambak garam dengan lahan pemukiman berpengaruh terhadap peningkatan degradasi lingkungan. Keberadaan tambak garam diindikasikan sebagai penyebab meningkatnya kadar salinitas pada air sumur di sekitar pemukiman sehingga air sumur terasa asin. Untuk mengetahui pengaruh keberadaan tambak garam terhadap pencemaran air tanah, dibutuhkan informasi mengenai karakteristik permukaan maupun profil bawah permukaan. Metode penelitian yang dipakai terdiri atas survei hidrogeologi, hidrokimia dan geofisika (metode geolistrik). Tipe air tanah didominasi oleh tipe klorida (Na-Cl) dan karbonat (Na-HCO3,Ca-HCO3), hasil perhitungan rasio unsur kimia air tanah menunjukkan adanya pengaruh infiltrasi air tambak garam kedalam akuifer air tanah. Nilai DHL air tanah daerah penelitian didominasi nilai dengan kisaran 15.000–50.000 µS/cm dan masuk dalam sifat air asin. Nilai tahanan jenis batuan bawah permukaan bervariasi antara 0,1–300 Ωm yang umum dimiliki pada kawasan pesisir atau alluvial. Nilai tahanan jenis rendah berasosiasi dengan litologi alluvial yang terdiri atas air payau atau air asin yang diduga hasil infiltrasi dari air tambak garam. Kedalaman muka air asin yang mencemari lapisan akuifer berada pada kisaran kedalaman 5 hingga 30 m. Keberadaan tambak garam memberi pengaruh terhadap tingkat pencemaran polutan Cl- pada air tanah dangkal yang ada di Kecamatan Pademawu, Madura, sehingga dibutuhkan penataan ulang sistem tata guna lahan di kawasan pesisir tersebut.Kata kunci: pencemaran air tanah, tambak garam, Kecamatan Pademawu, Geolistrik tahanan jenis
The Importance of Nutrients Concentration Monitoring In Coastal Area Gemilang, Wisnu Arya; Wisha, Ulung Jantama; Dhiauddin, Ruzana
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 2 (2019): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (602.583 KB) | DOI: 10.14710/ik.ijms.24.2.69-80

Abstract

Land utilization changes of the natural resources conservation area of Pangandaran coastal area, that have been utilized as a marine tourism area, which affect many kinds of environmental degradation threats. Updating the condition of Pangandaran waters is essential due to its condition impacted by anthropogenic activities. Water condition monitoring was done by measuring nutrients as an indicator to assess the water fertility and pollution. Fourty five observation points were selected and divided into three locations, representing the condition of river, estuary/mangrove area, and open sea. Nutrients were analyzed by employing Standard Methods for The Examination of Water and Wastewater 22nd Edition 2012 (SMEWW). Currents and tides were measured for 15 days, used as the basis input of hydrodynamic model. The results showed that the highest of average value of nitrate was found in the estuary/mangrove forest which reached 0.998 mg.L-1. While, the highest phosphate content was observed in the river which reached 0.928 mg.L-1. The highest ammonia concentration was observed in the sea which reached 0.027 mg.L-1. N:P ratios in the study area are categorized <16, which showed that Pangandaran waters are in the condition of N-limitation. These conditions trigger blooming of phytoplankton due to the high concentration of nitrate. The higher nutrient concentration indicates that anthropogenic activities take place. Tidal current has an important role transporting nutrient in the estuary, triggering nutrient deposition and blooming tendency. Restrictions on residential areas and the utilization of coastal areas are an appropriate step to reduce the pollution level in Pangandaran waters.
KELIMPAHAN FITOPLANKTON DAN KONSENTRASI TSS SEBAGAI INDIKATOR PENENTU KONDISI PERAIRAN MUARA SUNGAI PORONG Wisha, Ulung Jantama; Yusuf, Muh; Maslukah, Lilik
Jurnal Kelautan Vol 9, No 2: Oktober (2016)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v9i2.1298

Abstract

Pembuangan limbah dan lumpur ke Sungai Porong diduga akan berdampak bagi lingkungan sekitarnya, khususnya meningkatnya konsentrasi padatan tersuspensi (TSS) dan mempengaruhi sebaran fitoplankton di wilayah tersebut. Tujuan dari dilakukannya penelitian ini adalah untuk mengetahui konsentrasi muatan padatan tersuspensi, kekeruhan dan kelimpahan fitoplankton di perairan muara Sungai Porong, Kabupaten Sidoarjo. Metode penelitian yang digunakan adalah metode deskriptif. Data yang dikumpulkan sebagai variabel ukur adalah muatan padatan tersuspensi, kekeruhan, kelimpahan fitoplankton dan kecepatan serta arah arus. Variabel pendukung meliputi data pasang surut dan peta bathimetri wilayah muara Sungai Porong. Data yang diperoleh selanjutnya dianalisis menggunakan program Arc GIS 10, sehingga menghasilkan output berupa distribusi spasial. Konsentrasi muatan padatan tersuspensi 542-885 mg/l. konsentrasi kekeruhan 3.7-20.5 NTU. Kelimpahan fitoplankton 153-238 ind/l. Berdasarkan data tersebut dapat diketahui bahwa sebaran muatan padatan tersuspensi dan kekeruhan memiliki kaitan dengan kelimpahan fitoplankton pada saat surut, meskipun pada kuantitas yang tidak selalu sama. Arah sebaran bergerak ke arah Timur atau menjauhi muara sungai. ABUNDANCE OF PHYTOPLANKTON AND TSS VALUE AS AN INDICATOR FOR PORONG RIVER ESTUARY WATER CONDITIONSDisposal of waste and mud into Porong River is expected to have an impact to the surrounding environment, particularly the increasing concentration of suspended solids (TSS) and affect the distribution of phytoplankton in the region. The purpose of this study was to determine the correlation between the concentration of TSS and abundance of phytoplankton as an indicator for determinate condition of Porong River Estuary. Determining the location of sampling by purposive sampling method. The data were then analyzed with statistical methods and spatially using ArcGIS 10 program. The concentration of suspended solids charge 542-885 mg/L. concentration of 3.7-20.5 NTU turbidity. The abundance of phytoplankton 153-238 ind/L with a diversity index ranged from 0.4 to 0.62. Hydrodynamic modeling simulated using ADCIRC module of SMS 8.1 software with a current velocity in the range of 0 to 0.04 m.s-1. Distribution of TSS and turbidity linked to the abundance of phytoplankton at low tide, although the quantity is not always the same, based on the diversity index and the condition of the Porong River estuary is in category of lightly polluted.Keywords: Diversity Index, Phytoplankton, Porong estuary, Totally Suspended Solids
FAKTOR HIDRO-OSEANOGRAFI TERHADAP DISTRIBUSI AIR TAWAR BERSUHU RENDAH DEKAT PANTAI SEKITAR LOKASI KELUARAN AIR TANAH LEPAS PANTAI (KALP) DI PERAIRAN LOMBOK UTARA, INDONESIA Wisha, Ulung Jantama; Kusumah, Gunardi
OLDI (Oseanologi dan Limnologi di Indonesia) Vol 4, No 3 (2019)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/oldi.2019.v4i3.157

Abstract

Pantai Utara Lombok memiliki banyak sumberdaya seperti Keluaran Air Tanah Lepas Pantai (KALP). Keluaran air tanah terbesar terdapat di Pantai Krakas. Keluaran air tanah yang dingin mungkin memicu ketidakseimbangan lingkungan disekitarnya (pendinginan lokal). Tujuan dari penelitian ini adalah untuk mengetahui pengaruh dari faktor fisika yang mendukung distribusi keluaran air tanah dingin. Kegiatan survei lapangan dilakukan pada tanggal 23-26 Maret 2016. Flow model dan analisis statistik digunakan untuk mengetahui pola transport dari anomali suhu. Secara vertikal, pergerakan arus laut mengikuti kaidah spiral Ekman yang mempengaruhi distribusi vertikal dari air tanah. Kecepatan arus pada kondisi menuju pasang berkisar antara 0-0,15 cm/detik, dominan arah arusnya menuju ke barat daya. Pada saat menuju surut kecepatan arus berkisar antara 0-0,32 cm/detik, dominan arah arusnya menuju ke timur laut. Fluktuasi suhu mengikuti perubahan elevasi muka air di lokasi KALP dimana nilai korelasi sebesar 63 %.
Total Suspended Solid (TSS) Distributed by Tidal Currents during Low to High Tide Phase in the Waters of Sayung, Demak: Its Relations to Water Quality Parameters Wisha, Ulung Jantama; Ondara, Koko
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (829.01 KB) | DOI: 10.24843/jmas.2017.v3.i02.154-162

Abstract

Sayung waters is a region highly vulnerable to catastrophic erosion along the coast, which is directly followed by an increase suspended sediments and particles from the bottom of the waters that was stirred by oceanography factors. The purpose of this study was to determine the concentration and distribution of the latest TSS condition and its effect on water quality parameters in the waters of Sayung. The sampling method is using purposive sampling, with the stations spread out along the coastal area of Sayung, the main data consist of current, tide, bathymetry, coastline and water quality, and the secondary data consist of RBI map and tide forecasting, those data is analyzed numerically and statistically. TSS value ranged between 23,1-199,6 mg.L-1, the distribution of TSS is simulated in the condition of ebb to tide with current speed ranged between 0-0.41 ms-1, that distribution also influenced by physical water factors such as salinity, temperature, and density and has  impacts to enhancing the turbidity and indirectly decrease the photosynthesis activity and inhibit the oxygen cycle in the Sayung waters.
ANALISIS JULAT PASANG SURUT (TIDAL RANGE) DAN PENGARUHNYA TERHADAP SEBARAN TOTAL SEDIMEN TERSUSPENSI (TSS) DI PERAIRAN TELUK PARE Wisha, Ulung Jantama; Heriati, Aida
Jurnal Kelautan Vol 9, No 1: April (2016)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v9i1.1066

Abstract

ANALYSIS OF TIDAL RANGE AND ITS EFFECT ON DISTRIBUTION OF TOTAL SUSPENDED SOLID (TSS) IN THE PARE BAY WATERSPare Bay conditions is closely related to the mechanism of circulation in Makasar Strait. One of the problems that occur in Pare Bay waters is increased turbidity and low dynamics of transport inside the bay, which caused silting in some parts of the bay. The aim of this study was to determine tidal range characteristics and the influence of suspended sediment distribution as analysis of the sedimentation process and siltation at Pare bay. Descriptive quantitative method was used and the survey location was based on purposive sampling method. Tidal type in Pare Bay water was mix mainly semidiurnal tides with Formzahl Value was 0.895. The value of the water level below the lowest tide (Z0) was 1036.44 cm. Mean sea level (MSL) value was 1107.97 cm. The vertical datum of MHHWS and MLLWS were 1143.47 cm and 1072.47 cm. Tidal range cycle in spring condition was 102-129,56 cm bigger than cycle in neap condition ranged from 55.53-82.47 cm. TSS concentrations ranged from 0-7.0 mg/L in the surface and ranged from 0- 10.0 mg/L in 5 meters depth. At high tide down, sediment was settling and at the time of high tide, sediment mixed back.Keywords: Pare Bay, suspended solid, tidal range, tide.ABSTRAKKondisi perairan di Teluk Pare sangat berkaitan dengan mekanisme sirkulasi di Selat Makasar, Permasalahan yang terjadi di Teluk Pare salah satunya adalah tingginya tingkat kekeruhan dan rendahnya dinamika transport didalam teluk yang menyebabkan pendangkalan di beberapa bagian teluk. Tujuan dari penelitian ini adalah mengetahui karakteristik julat pasang surut dan pengaruhnya terhadap sebaran sedimen tersuspensi sebagai analisis proses sedimentasi dan pendangkalan di perairan Teluk Pare. Metode penelitian yang digunakan adalah deskriptif kuantitatif, metode penentuan lokasi titik pengambilan sampel air yaitu metode purposive sampling. Tipe pasang surut Teluk Pare adalah campuran condong harian ganda dengan nilai bilangan formzahl sebesar 0,895. Nilai muka air dibawah surut terendah (Z0)  sebesar 1036,44 cm. Nilai mean sea level (MSL) sebesar 1107,97 cm. Datum vertikal MHHWS dan MLLWS memiliki nilai 1143, 47 cm dan 1072,47 cm. Julat pasang (tidal range) siklusan saat siklus pasang purnama yaitu 102–129,56 cm lebih besar daripada siklus pasang perbani yang berkisar 55,53-82,47 cm. Konsentrasi TSS berkisar antara 0-7,0 mg/L pada permukaan dan berkisar antara 0–10 mg/L pada kedalaman 5 meter, pada saat pasang turun sedimen sudah mulai mengendap dan pada saat pasang naik sedimen teraduk kembali.Kata kunci: julat pasang, pasang surut, sedimen tersuspensi, Teluk Pare.
Nutrient Condition of Kampar Big River Estuary: Distribution of N and P Concentrations Drifted by Tidal Bore ”Bono” Wisha, Ulung Jantama; Maslukah, Lilik
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 3 (2017): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (501.162 KB) | DOI: 10.14710/ik.ijms.22.3.137-146

Abstract

Due to accelerated anthropogenic activity, a significant amount of pollutants has been directly or indirectly discharged into coastal estuaries of Kampar. Nutrient pollution along the river to the estuary that adversely affects coastal and estuary ecosystem mainly originates from inland such as industrial effluent, household, and agricultural waste as well as a naturally derived pollutant from biogeochemical cycle, which is controlled by the propagation of undular bore (Bono). The purpose of this study is to determine the environmental impact of distribution of nutrients caused by the mechanism of Bono. This research employed a purposive quantitative method, the concentration of dissolved phosphate, nitrate, nitrite and ammonia was analyzed using a spectrophotometer, tidal data retrieval was measured for 30 days’ near the estuarine area, while, current flow was measured for 24 hours’ measurement. Phosphate concentrations ranged from 0.02-0.1 mg.L-1, nitrate concentrations ranged from 0.76-5.73 mg.L-1, ammonia concentrations ranged from 0.2-0.41 mg.L-1, nitrate concentrations ranged from 0.001-0.03 mg.L-1. The tidal type is mixed tide prevailing semidiurnal with tidal range reach 4.2 m during spring tide condition. At the time of Bono propagate, drastically enhance the surface elevation and directly increase the drift of velocity with the flow direction from estuary into the river upstream, that mechanism affects the nutrient distribution in Kampar river. Keywords: Bono, Fluid dynamics, Nutrient distribution, Tidal bore, Water quality
Hydrodynamics of Bontang Seawaters: Its Effects on the Distribution of Water Quality Parameters Wisha, Ulung Jantama; Husrin, Semeidi; Prasetyo, Gegar Sapta
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 3 (2016): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2018.297 KB) | DOI: 10.14710/ik.ijms.21.3.123-134

Abstract

Bontang is a crowded with residential and industrial activities which produce heat waste into surrounding waters. This condition may cause environmental problems, and changes in water condition. Knowledge about dynamics of physic and chemical waters condition in Bontang city is very important as an effort to address environmental issues as part of coastal zone management and protection. The aim of this research is to understand hydrodynamic characteristics (tide and current) and the influence to distribution of physics and chemical in Bontang waters base on primary data (current and tide during one month, physics and chemicals waters data taken by in situ) and secondary data (bathymetry and tide forecasting). Hydrodynamic simulation is based on MIKE 21 and supported by CD-Oceanography and WR plot. The results show that the current is dominant move toward the Southwest and Northeast with current speed ranged from 0-0,22 m.s-1. The results of hydrodynamic simulation in the surface water show that the current move base on tide movement with current speed ranged from 0-0,24 m.s-1. The results of physic and chemical concentration is analysed by ArcGIS 10 to know spatial distribution of all parameters. Surface temperature ranged from 29-31,8oC, surface density ranged from 20-20,6 ppm, salinity ranged from 33,1-33,5 ppm, dissolve oxygen concentration ranged from 0,078-0,11 ppm. Distribution of all physic and chemical parameters is influenced by current and tide movement. Keywords: current, numerical model, water quality, Bontang waters
PARTICLE SIZE CHARACTERISTICS OF RIVERBED SEDIMENTS TRANSPORTED BY TIDAL BORE ‘BONO’ IN KAMPAR ESTUARY, RIAU-INDONESIA Gemilang, Wisnu Arya; Wisha, Ulung Jantama; Rahmawan, Guntur Adhi
Marine Research in Indonesia Vol 43, No 1 (2018)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1416.394 KB) | DOI: 10.14203/mri.v43i1.293

Abstract

The presence of tidal bore in the Kampar River (locally known as ‘bono’) may influence sedimentation in the Kampar River and its estuary. Understanding sedimentation mechanisms (e.g., erosion, deposition) is important to communities along the Kampar River, which can be studied by analyzing characteristics of grain size distribution. Here, we study riverbed sediment samples collected from 17 stations using an Ekman grab sampler, accompanied by bathymetry and acoustic Doppler current profiler (ADCP) measurements. Grain size data show that the sediments are coarser upstream and gradually finer downstream. Silty sands are predominant in the upstream section of the river, sands in its river body and sandy silts in the downstream. The results indicate the influence of undular bores on grain size characteristics. We also found that the propagation of bono and Kampar River’s funnelshaped morphology cause intense scouring events of riverbed sediments. Sortation values that range between 0.332.14 suggest unstable currents that result in randomly deposited sediments. The sediment mass transfer per area is positively towards downstream at the low tidal condition. However, after the passage of the bores, the sediment mass transfer area becomes negatively towards upstream.
Bathymetry and Hydrodynamics in Pare Bay Waters During Transitional Seasons (SeptemberOctober) Wisha, Ulung Jantama; Heriati, Aida
Journal Omni-Akuatika Vol 12, No 2 (2016): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1180.642 KB) | DOI: 10.20884/1.oa.2016.12.2.98

Abstract

Sedimentation on Pare bay and Karajae estuary originated from the run off of Karajae River. Highsedimentation process leads to the adverse effect of abiotic environmental changes. The aim of thisresearch is to analyse bathymetry condition and hydrodynamic characteristics of the area inunderstanding sediment distribution on Pare Bay. Corrected bathymetric data by tide data isprocessed using Surfer software 9.0 versions to analyse Pare Bay contour in 2D and 3D, the resultshow depth ranges from 0 to 20 meters. Flow model module by MIKE 21 software was used inhydrodynamic simulation (MRSE 11.44%) and shows that current condition in Pare Bay wasdominated by tidal (within its speed up to 0.43 ms-1), surface currents speed is higher and morerandom than the speed in water column and near bottom. Due to its location, Pare Bay is directlyinfluenced by Indonesian Through flow which has strong currents flow and cause mixing andturbulence along its way, this condition influences Pare Bay condition, especially in the process ofsedimentation and turbulence.  Keywords: bathymetry, currents, hydrodynamics, sedimentation, pare bay