Ocean parameter and hydrographic measurement around Cirebon port channel

Abstract

One of the largest ports in West Java is Cirebon, which serves an important role in supporting the surrounding economy and becoming the alternatives of the biggest port in Java. Numerous loading and unloading activities are recorded with coal as one of the commodities. Sedimentation and water quality is a common issue facing any port. To assess the recent condition of the port, an oceanographic parameter and hydrography survey is one approach. A field survey in the Cirebon port, particularly around the channel and outside part was carried out in February 2023. The bathymetry result at the channel varied within 0 - 10 m depth. The mixed semidiurnal type in this area has a tidal range around 1.1 m. Sea current inside the port has low speed within 0-0.03 m/s meanwhile outside of the port can reach 0.13 m/s. Through the weathering system, the average temperature is 26.3°C, average wind speed of 2.25 m/s dominantly blowing from west, relative humidity around 88.6%, and rain rate also low. In the study, the sea condition of surface temperature, salinity, turbidity, DO, and pH is 28.5°-29.3°C, 29.9-30.1 psu, 3.65-17.68 FTU, 3.69-4.83 mg/L and pH 7.9-8.2, respectively. Based on the national water quality standard for the port, the condition is within threshold for several parameters.