East Season Research Articles

POTENSI KEJADIAN ROB DI PESISIR PROBOLINGGO SERTA PERBANDINGAN KONDISINYA ANTARA MUSIM BARAT DAN MUSIM TIMUR BERDASARKAN DATA OSEANOGRAFI DAN METEOROLOGI

Rob atau banjir pasang air laut telah menjadi permasalahan serius di beberapa daerah pesisir di Indonesia, khususnya Probolinggo. Kajian mengenai banjir rob di wilayah ini telah dilakukan dengan mengolah dan menganalisa data-data oseanografi dan meteorologi untuk mengkaji seberapa besar potensi kejadian dan perbandingan kondisinya saat musim Barat dan Timur. Data-data yang digunakan adalah data pasang-surut (pasut) dan angin wilayah Probolinggo selama 7 tahun (2004 - 2011) dari Stamet II Perak Surabaya, serta data topografi Probolinggo dari Shuttle Radar Topography Mission (SRTM). Potensi terjadinya banjir rob ditentukan dengan membandingkan tinggi muka air ini dengan topografi daerah kajian. Data meteorologi dianalisa untuk dibandingkan kondisinya saat musim Barat dan Timur. Hasil menunjukkan bahwa banjir rob dapat terjadi di beberapa titik di pesisir Probolinggo saat pasang tinggi khususnya selama periode pasang purnama akibat tinggi muka air yang lebih tinggi (0,73 m) daripada ketinggian topografi daerah kajian (rerata <0.5 m). Kondisi akan lebih buruk selama musim Timur akibat datangnya angin kencang dari arah yang berpotensi dalam kemunculan gelombang tinggi di pesisir.

Catching flying fish (Hirundichthys oxycephalus) in the central Makassar Strait fishing ground using drifting gillnet

Catching flying fish (Hirundichthys oxycephalus) in the central of Makassar Strait using drifting gillnet with a mesh size of 2.54 and 3.18 cm was carried out in west and east season. Drifting gillnets with mesh size of 2.54 cm and 3.18 cm caught H. oxycephalus with a number of catches that varied every month throughout the season. The objective of this study was to compare CPUE rates of two different mesh size of gillnet and to describe the sea surface temperature conditions at the fishing ground locations. We conducted this research during east season (April-June). The study used satellite SST data combined with experimental fishing by operating one experimental unit of drifting gillnets with mesh size of 2.54 cm and 3.18 cm in the fishing area for 30 fishing trips. CPUE (kg hauling−1) was the amount of catch per hauling. The difference in catch between the mesh size of 2.54 and 3.18 cm was assessed by t-test analysis using SPSS software package. The results showed that CPUEs per piece of gillnets with the mesh size of 2.54 cm were ranged from 0.23 to 2.90 kg hauling−1 with 1.38 kg hauling−1 on average, while the CPUEs for the mesh size of 3.18 cm were ranged from 0.47 to 8.93 kg, with 3.28 kg hauling−1 on average. The t-test showed that mesh size of 3.18 cm was significantly different from the mesh size of 2.54 cm. CPUE of drifting gillnets with the mesh size of 3.18 cm higher than the mesh size of 2.54 cm and occupied the potential fishing grounds with relatively warmer SST of 29-31°C. This suggests that the gillnet mesh size of 3.18 cm is better than the other size for catching flying fish within the potential fishing grounds during April-June.

Deteksi Perubahan Sebaran Klorofil-A Di Perairan Utara Aceh Menggunakan Citra Aqua Modis

This study examines supporting data for fishing around the northern periphery of Aceh which is 05 ° 00'00 "-06 ° 00'00" LU and 95 ° 00'00 "-96 ° 00'00" BT. the data used is Aqua MODIS satellite imagery data with a level-3 Standard Mapped Image (SMI) Monthly with a spatial resolution of 4 km. the process is done image cutting, data extraction, interpolaso, and overlays. during the east season 2018 to the west season 2019 the distribution of chlorophyll-a in the northern waters of Aceh tends to increase

The sustainability of seagrass traditional fisheries on the east cost of Bintan Regency

The traditional fishermen who life in the eastern coast of Bintan Regency is highly dependent on the seagrass ecosystem. This situation will give pressure especially on the resources that used by fishermen. The aims of this study is to measure the sustainability of the relationship between traditional fishermen and the utilized resources. The source of data is derived from data which was taken in 2014-2015 in Pengudang, Berakit, Malang Rapat and Teluk Bakau villages. The parameters of the seagrass ecosystem include: seagrass, phytoplankton, zooplankton, fish, crab, squid, mollusc, nitrate, phosphate and silicate. Social parameters include: fishermen, fuel and fishing gear. Emergy analysis is used to measure the sustainability of the relationship. The results shows that the Emergy Yield Ratio (EYR) is 9.93E-06 seJ / east season and 6.52E-06 seJ / north season; Emergy Investment Ratio (EIR) of 8.98E-01 seJ / east season and 9.87E-01 SE / North season; Emergy Loading Ratio (ELR) is 2.56E + 00 seJ / east season and 2.42 + 00 seJ / north season; Emergy Sustainability Index (ESI) of 3.8806 seJ / east season and 2.70E-06 / north season. The seagrass traditional fisheries in the east coast of Bintan Regency is not sustainable.

Impact of Climate Variability to Aquatic Productivity and Fisheries Resources in Jepara Waters

Annual climate variability which is monsoon and inter-annual climate variabilities which are ENSO (El Niño Southern Oscillation) and IOD (Indian Ocean Dipole) affect the processes of aquatic productivity in the sea. Enrichment processes such as upwelling, river runoff, and mixing that occurs in the waters area cannot be separated from the influence of climate variability. Each of these waters has different responses to climate variability. Enrichment variability on the marine areas has affected to the fluctuations of fisheries abundance of both seasonal and inter-annual, so there are times in a given year occurred season and abundance of fish in another famine fish. This study aimed to assess the effect of climate variability (monsoon, ENSO, and IOD) on aquatic productivity, fish catches, and time of fish season in the waters of Jepara using descriptive methods. Variability of aquatic productivity was determined based on indicators of chlorophyll-a MODIS satellite imagery. The results of the study showed that the monsoon is the most influence on aquatic productivity and Sea Surface Temperature (SST) in Jepara waters. High productivity occurs in the west and east season. In particular, the highest productivity generally occurs in the east. Harvesting of fish in the waters of Jepara occur in transitional season I (March-May) and Transition II season (September-November), there are lag time 1-3 month after highest peak of chlorophyll-a. The fish lean season occurs in the west, generally months from December to January. Interannual climate variability ENSO and IOD showed that significant affect to SST and fish productivity. When El Nino-positive IOD event impact decrase of SST and highest fisheries productivity.

The Condition of Significant Wave Height and Wind Velocity in Makassar Strait during 2017

This study aims to look at the conditions and characteristics of significant wave height and its relationship to wind velocity in the Makassar Strait in 2017. The data used in this study are bathymetry data from GEBCO with a resolution of 30 seconds, significant wave height data (Hs) with a resolution of 0.25 x 0.25 as well as wind velocity and direction with a resolution of 0.25 x 0.25 which are secondary data results from the European Center for Medium-Range Weather Forecasts (ECMWF) with a span of one year in 2017. The method used in this research is an analysis of the energy spectrum of significant wave height using Fast Fourier Transform. In addition, wind velocity and direction are processed by using GrADS software to see the visual conditions. Based on this study, it can be concluded that wind velocity is strongly associated with significant wave height values. This can be seen at each sample point in the Makassar Strait, where when the value of wind velocity is high, the value of significant wave height has the same conditions, and vice versa. The wind velocity value has a maximum value in the Makassar Strait during the east season with a value of more than 4.5 m/s. The highest energy spectrum occurs at point 3 in the Makassar Strait, which is 7303 m2 with a period of 6 months.

Concentration Conditions of Carbon Dioxide in Bukittinggi During the Event of El Niño 2015

<p>In 2015, about 2.61 million ha of land and forests in Indonesia were on fire and indicated will increase the amount of CO<sub>2</sub> emitted into the atmosphere. The purpose of this study was to understand the condition of CO<sub>2</sub> concentration at Bukittinggi during El Niño 2015. The data used was the data of Kototabang CO<sub>2</sub> concentration, NINO3.4 index and chlorophyll-a concentration from 2004-2016. The results showed that CO<sub>2</sub> concentration at Bukittinggi from 2004-2016 was increased of about 2.4 ppm/year. CO<sub>2</sub> concentration in the first transition season (March-May) and the east season (June-August) 2015 were approximately 397 and 395 ppm, respectively, lower than that in 2016 on the same months which was about 401 and 397 ppm, respectively. In the second transition season (September-November) in 2015, CO<sub>2</sub> concentration reached 401 ppm which was higher than that in 2016 which was only 397 ppm. In 2015, chlorophyll-a concentration in the southern waters of Java increased about 14% in the east season and reached 50% during the second transition season. Therefore, small increase of CO<sub>2</sub> concentration during El Niño 2015 was indicated as a result of high uptake of CO<sub>2</sub> by the sea for photosynthesis needs.</p>

Seasonally physical characteristics of ROFI zone (Region of Freshwater Influence) in Pelabuhan Ratu Bay

Coastal waters have many oceanographic phenomena are still being studied. One such phenomenon is how the influence of freshwater to the water mass in coastal waters. This study aims to calculate freshwater fraction, volume transport of freshwater and water mass stability. Physical water characteristics were measured by CTD (Conductivity, Temperature and Depth) deployed in 15 locations for temperature, salinity and density. The results of freshwater fraction analysis show that the west season had a greater on water fraction than the east season with value ranging from 0.40 % - 0.70 % with the amount 18.07 %, while the east season had a value of 0.02 % - 0.28 % with the amount is 7.30 %. The transport of freshwater volume in west season is 1.429.244 m3s-1 while in the east season it is 1.066 m3s-1. Water mass stability of water column in the research location has static stability with its average N2 in west and east monsoon are 0.008 cycl/s and 0.7 × 103 cycl/s, respectively. Those analyses above infer that freshwater input hugely influences physical water mass of ROFI zone in research location.

Studi Variabilitas Produktivitas Primer Bersih Serta Hubungannya dengan El-Nino Southern Oscillasion (ENSO) dan Indian Ocean Dipole (IOD) di Laut Banda Berdasarkan Data Satelit Aqua MODIS

Banda Sea is one of the waters had rich of fish catch. The high catch of fish was related with primary productivity of these waters. Net Primary productivity in the Banda Sea was related with some oceanographic factors such as current, ARLINDO, upwelling and downwelling. The oceanographic factors are influenced by ENSO and IOD. The aim of this research to explained the variability of net primary productivity in Banda Sea and its relation with oceanography factor such as ENSO and monsoon. Data that used in this research were data from MODIS satellite and for analysis of net primary productivity data used Vertically Generalized Production Model (VGPM). The relation of net primary productivity with ENSO and IOD can used pearson correlation method. The result of net primary productivity value in Banda Sea was about 100 gCm-2day-1 - 1200 gCm-2day-1, with the highest apex net primary productivity in August precisely in the east season. The high value of net primary productivity due to upwelling in the season. The value of net primary productivity in west season was decreased. This condition caused by the downwelling of the season. The region with the highest net primary productivity value was the northeast of Banda Sea and the region with lowest net primary productivity value was the western of Banda Sea. The relationship between ENSO with net primary productivity in Banda Sea classified in medium correlation with value 0,556, while relationship between IOD and net primary productivity classified in weak correlation with value 0,23.

STUDY OF SEDIMENTATION IN THE WATER OF PATIMBAN PORT DEVELOPMENT PLAN USING COMPUTATION MODELING

The developmentof the international port of Patimban in Subang is very urgent. The port is expected to support the Tanjung Priok port in Jakarta which is unable to meet the loading and unloading needs of business operators, especially in West Java. In port development planning one of the main problems of physical chemical aspects is sedimentation and erosion process. The purpose of this modeling is to know the sedimentation and erosion pattern around the location plan of port development. The result of modeling is expected to be the initial consideration in designing the Patimban Port. Modeling of sediment transport is done by using MIKE21 Sand Transport module software by entering geophysical data of field survey result such as bathymetry, sea level, river flow and characteristic of existing sediment. Modeling is done both in west season and east season for 1 year (October 2016-September 2017).Based on the results of this modeling is known that the existing conditions in parairan construction plan ponds occur sedimentation sedimentation of 12.74 cm / m th while when the port has been built a little erosion -0.34 cm / year. Whereas in the existing shipping lane plan there is sedimentation 14,41 cm / year and when the port has been built there is sedimentation of 6,06 cm / year.

Hydrodynamic and Sediment Transport Modelling of Suralaya Coastal Area, Cilegon, Indonesia

The coastal zone of Suralaya is located in the district Pulomerak, Cilegon City, Province Banten. This region is a part of the Sunda Strait region that is very important area to support the ongoing activities such as, industries, power plant, ports, and tourism. However, those various activities will certainly give effect to the surrounding environment. To determine the environmental conditions of Suralaya Coast, it is necessary to study the hydrodynamics analysis and sediment transport modelling including the analysis of currents patterns. Tidal elevation observation was conducted for 15 days used to validate the water elevation simulation results, in which a good agreement between the observed data and the model result was obtained with the error value of 1.6%. The dominant current direction is from northeast in west season, while in the east season predominant current direction is from northwest with a speed average current 12,44 cm/s. The dominant wave direction is from the west. The average temperature is at 27°C and the bottom sediment dominant form is fine sand.

KONDISI OSEANOGRAFI DI SELAT MATAK KABUPATEN KEPULAUAN ANAMBAS MELALUI MODEL HIDRODINAMIKA

This paper describes some of the general condition of the oceanographic parameters in the Strait Matak, Anambas Archipelago. The data flow is obtained by direct measurement by using a current meter types RCM-7. Simulation models using Mike 21. Mike flow pattern is divided into two seasons, namely west season (January) and the east season (August) and flow patterns ahead of the tide when the season is generally moving west to wards the south, it demonstrates the role of strong tidal influence the movement of waterin the study area. Flow velocity in the strait just before the tide on the west season reaches 1m/s. Flow patterns at high tide on the west season looks still moving toward sthe south. The maximum flow velocity in the strait when the tide reaches 0.32 m/s, while the average speed in the area of the model is 0.12 m/s. Low tide towards the current pattern is still moving towards the south, it reinforces the notion that in addition to tidal windsare also very significant role in moving the flow, in this case that the current is moving toward the south. Flow velocity just before low tide reaches 0.85 m/s. Flow patterns at low tide shows the differences in the three previous conditions, the current in the strait to move out to the north toward the South China Sea. In condition slow tide, the tida lmore dominantly than the wind, this proved to even though the wind toward the south, the currents inthestraitis moving toward snorth along the tidal flow leading to the South China Sea. Flow velocity is quite varied location of modeling; flow velocity at low tide reaches 0.5m/s, with the average 0.15 m/s. Keywords: current and direction, wind, tide, model.

Mapping of HABs Contaminated In Green Shells (Perna viridis) in Semarang Bay

The existence of Harmful Algae Blooms (HABs) can adversely affect the water like a mass death of fish and oxygen depletion. Some types of HABs can be contaminated with seafood and contain biotoxins that are detrimental to the health of humans who consume them. Green mussels (Perna viridis) has the properties of filter feeders so vulnerable to contamination HABs. This research was conducted to produce spatially thematic maps contaminated HABs in P. viridis so providing information about risk prediction P. viridis when consumed by humans. Sampling was done purposively in three (3) stations that represent the Bay Semarang namely western boundary waters (Kendal), middle (Semarang) and the eastern boundary (Demak). Sampling done two (2) times, namely East season (June -July) and the second transitional season (September) 2016. Analysis of HABs done either in water or body tissues of P. viridis through the analysis of food habit. The results shows that P. viridis genus positive contaminated HABs phytoplankton Tricodesmium and Ceratium. Spatial distribution and abundance of Tricodesmium genus Fitoplankton is wider and taller than the HABs Phytoplankton genus Ceratium. Group HABs are found in the tissues of P. viridis no potential as biotoxin that does not cause adverse health risks.

Coastline changes in North Bengkalis Island, Indonesia: satellite imagery analysis and observation

Coastal area activity on human exploitation greatly affected aquatic ecosystems. Land changes disturbed the level of soil stability, soil will be easily eroded by the flow of water, the surface tide ran off to the sea. North waters of the island of Bengkalis is a place boiling down to several rivers, including the river Jangkang and river Liung. The rivers have affected the concentration of total suspended solid (TSS) in the strait waters of North Bengkalis Island. This research demonstrated water sampling by using sampling point determined by purposive sampling method mixing the layer of water depth ratio. The results based on satellite imagery data showed that TSS was quite high in the West season period until the transition period I (West to East) with a large concentration value of 200 mg / L. For the lowest TSS concentration occurred in the East season i.e., between 0 - 200 mg/L. TSS concentrations that dominated in the East season ranged from 51 to 75 mg/L This value was higher than the TSS concentration of field data analysis, i.e., between 23 - 39 mg/L. Changes of coastal coastline of North Bengkalis during the last 20 years continue to change the size of the land area, with a land area of 131 ha lost.

Analysis of ocean wave characteristic in Western Indonesian Seas using wave spectrum model

Understanding the characteristics of the ocean wave in Indonesian Seas particularly in western Indonesian Seas is crucial to establish secured marine activities in addition to construct well-built marine infrastructures. Three-years-data (July 1996 - 1999) simulated from Simulating Waves Nearshore (SWAN) model were used to analyze the ocean wave characteristics and variabilities in eastern Indian Ocean, Java Sea, and South China Sea. The interannual or seasonal variability of the significant wave height is affected by the alteration of wind speed and direction. Interactions between Indian Ocean Dipole Mode (IODM), El Niño Southern Oscillation (ENSO) and monsoon result in interannual ocean wave variability in the study areas. Empirical Orthogonal Functions (EOF) analysis produces 6 modes represents 95% of total variance that influence the wave height variability in the entire model domain. Mode 1 was dominated by annual monsoon and has spatial dominant contribution in South China Sea effected by ENSO and Indian Ocean influenced by IODM. Java Sea was influenced by Mode 2 which is controlled by semi-annual monsoon and IODM. A positive (negative) IODM strengthens (weakens) the winds speed in Java Sea during the East (West) season and hence contributes to Mode 2 in increasing (decreasing) the significant wave in Java Sea.

Impacts of El Niño 2015 and the Indian Ocean Dipole 2016 on Rainfall in the Pameungpeuk and Cilacap Regions

El Niño and the Indian Ocean Dipole (IOD) are oceanographic phenomena which occur in the tropical Pacific Ocean and the Indian Ocean due to air–sea interactions. These phenomena affect climate variability both regionally and globally. This study was conducted to understand the impacts of El Niño 2015 and IOD 2016 events on rainfall in the Pameungpeuk and Cilacap regions. The data used consists of the NIÑO3.4 index, IOD index, daily rainfall from 1987–2016, daily sea surface temperature from 1987–2016, daily sea surface height from 1994–2016 and pentad sea surface current from 2007–2016. The method used in this research was a descriptive analysis. The results have shown that rainfall in Pameungpeuk and Cilacap was influenced by El Niño 2015 and negative IOD 2016. During El Niño 2015 a decrease in rainfall occurred, whereas during negative IOD 2016 rainfall increased. Rainfall anomalies in the east season and the second transition season during El Niño 2015 in Pameungpeuk reached −107 mm and −374 mm; meanwhile in Cilacap rainfall anomalies reached −111 mm and −218 mm. Conversely, rainfall anomalies during negative IOD 2016 reached 109 mm and 360 mm in Pameungpeuk, and in Cilacap reached 293 mm and 365 mm. Changes in rainfall in Pameungpeuk and Cilacap during El Niño 2015 and negative IOD 2016 events were closely related to the weakening and strengthening of convections in the southern waters of Java.

THE VULNERABILITY STUDY OF LEMURU (SARDINELLA LEMURU) FISH RESOURCES SUSTAINABILITY IN BALI STRAIT IN CORELLATION WITH ENSO AND IOD

The aim of this research is to know the relationship between lemuru fish catch to Sea Surface Temperature (SST), El-Nino Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) phenomenon in Bali Strait. The results showed, that in the period 2007 – 2016. fluctuations of catches lemuru tends to decline. Sea Surface Temperature (SST) distribution with the lowest temperature 25,28oC at 24,53oC - 27,16oC and the highest temperature is 29,31oC in the range of 28,730C – 30,490C. The lowest temperature occurred in July - September while the highest temperature occurred in January - April. Based on the calculation there is a linkage and relationship between catch and SST as shown on the value of determination and correlation reached 50,0% and 70,73%. Most of the catches occurred in the west season and then the transition II, transition I and East Season. The relationship of ENSO phenomenon to the catch during the El-Nino phase of lemuru catch will increase while in the phase of La-Nina the catch of lemuru will decrease, because time of El-Nino phase of the sea surface temperature (SST) relative low which results in the chlorophyll-a mean case which is a food sources of lemuru fish. Based on Trenberth's theory, (1997), the rise and fall of the ENSO Index of less than six months is not stated in ENSO. From the calculation results during the research of 2007 - 2016 happened three times ENSO phenomenon that is in 2009, 2010 and 2015. At the time of the IOD phenomenon, the IOD (+) phase will result in a decrease in catch while the normal IOD phase and (-) will increase the catch. From the results of this study can also be observed, in the year 2007 - 2011 phenomenon ENSO and IOD have a strong influence on the catch while in the year 2012 - 2016 the influence of the phenomenon of ENSO and IOD has no strong influence caused by the quantity of lemuru fish that have been over exploitation that resulted in the current Bali Strait on Over Fishing status.
 
 Keywords : Fish Catch; El-Nino Southern Oscillation (ENSO); Indian Ocean
 Dipole (IOD)

Variasi Musiman Hubungan Antara Parameter Oceanografi Dengan Hasil Tangkapan Ikan Tongkol Berdasarkan Data Harian Di Selat Bali

Mackerel fish that classified pelagic fish and an export commodity in Indonesia. Distribution of mackerel fish are foundn all Indonesian waters, one of them in the Bali Strait. Distribution of mackerel fish influenced by oceanographic condition such as sea surface temperature (SST) and chlorophyll-a concentration. SST and chlorophyll-a concentrations are environmental parameters that can provide information on fishing ground. The purpose of this research is explained the temporal fluctuation and relationship between SST and chlorophyll-a concentration with mackerel fish had been catch in Bali Strait waters during 2011-2016. Data were analyzed using simple correlation analysis with 95% confidence interval. Temporally, the highest average SST occurred during the transition season I (March-May) and the lowest in the east season (June-August). The highest average chlorophyll-a concentration occurs in the east season and the lowest in the west season (December-February). The highest catch of mackerel fish occurred during transitional season II (September-November) and lowest in west season. The association between SST and chlorophyll-a concentration on mackerel fish catch showed low correlation with significant relationship, whereas concentration between SST and chlorophyll-a concentration strong with significant correlation

ANALISIS STRUKTUR KOMUNITAS MAKROALGA EKONOMIS PENTING DI PERAIRAN INTERTIDAL MANOKWARI, PAPUA BARAT

Makroalga di daerah Manokwari memiliki keanekaragaman spesis yang tinggi, namun organisme ini sangat rentan terhadap perubahan kondisi lingkungan baik alami maupun tekanan antropogenik. Tujuan penelitian ini adalah mengkaji komposisi spesies makroalga (klasifikasi dan identifikasi) dan menganalisis struktur komunitas makroalga di perairan intertidal Manokwari Papua Barat. Penelitian pengambilan data di lapangan pada bulan Juni 2014 sampai September 2014 (periode musim timur) pada 2 daerah penelitian yaitu mainland dan outland. Komposisi spesies makroalga ditemukan 28 spesies yang diklasifikasikan ke dalam 3 divisi, 3 kelas, 11 ordo, 16 famili, dan 19 genus. Spesies alga yang di temukan tersebut dikelompokkan dalam 3 divisi utama yaitu alga hijau (Chlorophyta) 14 spesies, alga merah (Rhodophyta) 8 spesies dan alga coklat (Phaeophyta) 6 spesies. Total rata-rata kepadatan jenis makroalga daerah outland lebih tinggi dibandingkan dengan mainland. Analisis struktur komunitas makroalga daerah outland lokasi Mansinam dan Lemon memiliki indeks keanekaragaman lebih tinggi di bandingkan dengan daerah mainland lokasi Rendani, Pasir Putih dan Arfai. Indeks keseragaman pada 5 lokasi penelitian daerah mainland dan outland mendekati 1 dimana populasi individu makroalga tiap jenis menyebar merata dan tidak ada makroalga yang dominan, sedangkan indeks dominansi mendekati nol dimana komunitas makroalga penyusunnya berada dalam keadaan stabil.

Physical and Chemical Conditions of Bayur Bay Waters On the East and West Season

Physical construction of Bayur bay coastal area as a port was followed by a variety of environmental issues, both physical degradation of the natural environment, biology reduction and an increase in social problems, directly affect to water quality decreasing in the coastal Bayur Bay. This study aims to determine the concentration distribution of physical and chemical parameters and their influence to water conditions on the east and west season. The method used is descriptive method (data taken by in situ and laboratory analysis), determining the location of sampling points based on purposive sampling method and tide prediction by NAOtide software. The results of field survey and laboratory measurements analysed using statistical method. The speed of sea currents on the east season ranged from 3,48 to 24,9 cm.s-1, while in the West season flow rate ranged from 1,4 to 57,7 cm.s-1. Rainfall in East Season ranged from 0-45 mm and The intensity of rainfall in West Season ranged from 0-30 mm. Sea-surface temperatures in the Eastern season range between 26,2- 31.5 °C, while in the west season SST range from 24,3 to 30,5°C. Dissolve oxygen concentration in the east season range from 4,3 to 6,1 mg.L-1, while the west monsoon conditions range from 4,1 to 6,4 mg.L-1. The pH values ranged from 7,4 to 8,1 in the Eastern season and ranged from 7,12 to 8,27 in the West season. Bayur Bay water quality conditions is not much different from its value range on the west and east season and influencing each other. Keywords: Bayur Bay, Seasons, SST, Statistical method