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WATTIMURY, JUSUPH J
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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VARIABILITAS MUSIMAN SUHU PERMUKAAN LAUT DAN ANGIN DI LAUT ARAFURA RIUPASSA, YOPI; WATTIMURY, JUSUPH J
Jurnal Laut Pulau: Hasil Penelitian Kelautan Vol 1 No 2 (2022): Jurnal Laut Pulau
Publisher : Prodi Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jlpvol1iss2pp71-84

Abstract

Research on sea surface temperature (SST) and wind in the Arafura Sea is very important to answer various processes and phenomena that occur in the water column, for example upwelling and downwelling phenomena, the influence of monsoon winds, ENSO and LaNina phenomena, mixing of water masses, forecasting fishing areas, determination of marine cultivation areas, and so on. This study aims to examine the spatial distribution and variability of sea surface temperature (SST) and wind and to examine the correlation of SST with wind speed and direction in the Arafura Sea. SST data is obtained from the AQUA MODIS satellite which is downloaded on the website http://oceancolor.gsfc.nasa.gov. Wind data obtained from the site: ftp://ftp.ifremer.fr/ifremer/cersat. The results of the analysis show that the SST in the Arafura Sea varies seasonally with a range of 23–34oC and a variation of 3.01-4.60%. The wind speed ranges from 0.02-10 m/s with a variation of 40.07-47.76%. There is a strong correlation between SST and wind speed and direction based on latitude and longitude. The correlation between wind speed and SST ranges from -0.01 to -0.87, while the correlation between wind direction and SST ranges from 0.52 and -0.71. In certain waters there is a positive linear correlation of SST with wind direction of 0.18-0.78
Pemetaan Morfologi Ambang Galala Poka (APG) Wattimury, Jusuph J; Waas, Harold J.D; Hukubun, Ronald D
Jurnal Laut Pulau: Hasil Penelitian Kelautan Vol 2 No 1 (2023): Jurnal Laut Pulau
Publisher : Prodi Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jlpvol2iss1pp51-58

Abstract

The Galala Poka (APG) sill is in the form of an underwater hill located in the narrow waters of the TAD and TAL transition zones. The morphology of APG is important to map because it influences the dynamics of water masses during the tidal period in the TAL and TAD Transitional areas, and can even explain the phenomena of cohesive sediment transport and deposition as well as tidal mixing phenomena that often occur around APG. This research aims to map the topographical profile of the APG seabed and calculate its spatial dimensions.The GIS-based mapping method is used to create an APG seabed topographic model using data compiled from sounding results, digital Navionic Sonar Chart data and digital shipping channel bathymetry data. The trapezoidal rule model is used to calculate the APG dimensions. APG seabed 2D and 3D spatial models mapped with ArcGIS 10.8 and Surfer 23.The results of the analysis found the APG boundaries at coordinates 128.19316 – 128.19829E and 3.66027 – 3.56659S and UTM coordinates 410399.1390 ​​– 410969.1292 mT and 9594764.3000 – 9595384.3000 mU. The topography of APG is generally convex with a flat peak at the center. There are variations in the slope of the seabed, especially on the outer side of the APG. APG volume with a reference depth of 0m (LWS) 1,304,828.05 m3, surface area 151,954.65 m2. At a reference depth of 8m, the APG volume is 20,071.95 m3, the area is 94,887.23 m2. At a reference depth of 10m, the APG volume is 351,296.95 m3, and the surface area is 73,012.06 m2.
Co-Authors RIUPASSA, YOPI Ronald Darlly Hukubun Waas, Harold J.D